/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 TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_25_stack_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:48:10,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:48:10,788 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:48:10,792 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:48:10,792 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:48:10,792 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:48:10,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:48:10,830 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:48:10,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:48:10,834 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:48:10,834 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:48:10,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:48:10,836 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:48:10,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:48:10,837 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:48:10,837 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:48:10,837 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:48:10,837 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:48:10,838 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:48:10,838 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:48:10,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:48:10,838 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:48:10,839 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:48:10,839 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:48:10,839 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:48:10,839 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:48:10,839 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:48:10,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:48:10,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:48:10,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:48:10,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:48:10,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:48:10,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:48:10,842 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:48:10,842 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:48:10,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:48:10,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:48:10,842 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:48:10,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:48:10,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:48:10,843 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:48:10,843 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:48:11,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:48:11,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:48:11,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:48:11,080 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:48:11,080 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:48:11,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_25_stack_bound2.i [2023-08-03 15:48:12,275 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:48:12,537 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:48:12,538 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_25_stack_bound2.i [2023-08-03 15:48:12,554 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da9a3cc52/858f123eadc9435da64f867e0ea8c286/FLAG3ea79f5b3 [2023-08-03 15:48:12,569 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da9a3cc52/858f123eadc9435da64f867e0ea8c286 [2023-08-03 15:48:12,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:48:12,576 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:48:12,580 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:48:12,580 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:48:12,583 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:48:12,583 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:48:12" (1/1) ... [2023-08-03 15:48:12,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20228614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:12, skipping insertion in model container [2023-08-03 15:48:12,584 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:48:12" (1/1) ... [2023-08-03 15:48:12,631 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:48:12,893 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_25_stack_bound2.i[31168,31181] [2023-08-03 15:48:12,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:48:12,916 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:48:12,938 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [256] [2023-08-03 15:48:12,939 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [256] [2023-08-03 15:48:12,964 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_25_stack_bound2.i[31168,31181] [2023-08-03 15:48:12,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:48:12,993 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:48:12,993 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:48:12,999 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:48:12,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:12 WrapperNode [2023-08-03 15:48:12,999 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:48:13,000 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:48:13,000 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:48:13,000 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:48:13,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:12" (1/1) ... [2023-08-03 15:48:13,033 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:12" (1/1) ... [2023-08-03 15:48:13,062 INFO L138 Inliner]: procedures = 179, calls = 36, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 179 [2023-08-03 15:48:13,063 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:48:13,063 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:48:13,064 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:48:13,064 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:48:13,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:12" (1/1) ... [2023-08-03 15:48:13,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:12" (1/1) ... [2023-08-03 15:48:13,082 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:12" (1/1) ... [2023-08-03 15:48:13,083 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:12" (1/1) ... [2023-08-03 15:48:13,088 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:12" (1/1) ... [2023-08-03 15:48:13,091 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:12" (1/1) ... [2023-08-03 15:48:13,092 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:12" (1/1) ... [2023-08-03 15:48:13,094 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:12" (1/1) ... [2023-08-03 15:48:13,096 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:48:13,097 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:48:13,097 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:48:13,097 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:48:13,102 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:12" (1/1) ... [2023-08-03 15:48:13,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:48:13,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:48:13,132 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) [2023-08-03 15:48:13,152 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 [2023-08-03 15:48:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 15:48:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 15:48:13,183 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 15:48:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:48:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 15:48:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:48:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:48:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:48:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:48:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 15:48:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:48:13,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:48:13,187 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 15:48:13,335 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:48:13,338 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:48:13,617 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:48:13,806 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:48:13,806 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 15:48:13,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:48:13 BoogieIcfgContainer [2023-08-03 15:48:13,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:48:13,810 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:48:13,810 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:48:13,813 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:48:13,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:48:12" (1/3) ... [2023-08-03 15:48:13,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b191f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:48:13, skipping insertion in model container [2023-08-03 15:48:13,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:12" (2/3) ... [2023-08-03 15:48:13,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b191f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:48:13, skipping insertion in model container [2023-08-03 15:48:13,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:48:13" (3/3) ... [2023-08-03 15:48:13,815 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_25_stack_bound2.i [2023-08-03 15:48:13,826 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:48:13,833 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:48:13,834 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 15:48:13,834 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:48:13,911 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:48:13,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 100 transitions, 205 flow [2023-08-03 15:48:13,984 INFO L124 PetriNetUnfolderBase]: 8/110 cut-off events. [2023-08-03 15:48:13,984 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:48:13,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 110 events. 8/110 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-03 15:48:13,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 100 transitions, 205 flow [2023-08-03 15:48:13,993 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 100 transitions, 205 flow [2023-08-03 15:48:13,996 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:48:14,004 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 100 transitions, 205 flow [2023-08-03 15:48:14,006 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 100 transitions, 205 flow [2023-08-03 15:48:14,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 100 transitions, 205 flow [2023-08-03 15:48:14,031 INFO L124 PetriNetUnfolderBase]: 8/110 cut-off events. [2023-08-03 15:48:14,032 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:48:14,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 110 events. 8/110 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-03 15:48:14,034 INFO L119 LiptonReduction]: Number of co-enabled transitions 1984 [2023-08-03 15:48:19,063 INFO L134 LiptonReduction]: Checked pairs total: 1726 [2023-08-03 15:48:19,063 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-03 15:48:19,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:48:19,088 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;@2519a46a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:48:19,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 15:48:19,091 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:48:19,091 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-03 15:48:19,091 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:48:19,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:19,092 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:48:19,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:48:19,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:19,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1092898197, now seen corresponding path program 1 times [2023-08-03 15:48:19,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:19,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148151304] [2023-08-03 15:48:19,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:19,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:48:19,220 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:48:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:48:19,283 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:48:19,285 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:48:19,286 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 15:48:19,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 15:48:19,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 15:48:19,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:48:19,289 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 15:48:19,293 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:48:19,293 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:48:19,344 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:48:19,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 163 transitions, 338 flow [2023-08-03 15:48:19,409 INFO L124 PetriNetUnfolderBase]: 15/188 cut-off events. [2023-08-03 15:48:19,410 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:48:19,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 188 events. 15/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 342 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 139. Up to 6 conditions per place. [2023-08-03 15:48:19,414 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 163 transitions, 338 flow [2023-08-03 15:48:19,417 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 163 transitions, 338 flow [2023-08-03 15:48:19,417 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:48:19,417 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 163 transitions, 338 flow [2023-08-03 15:48:19,418 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 163 transitions, 338 flow [2023-08-03 15:48:19,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 163 transitions, 338 flow [2023-08-03 15:48:19,451 INFO L124 PetriNetUnfolderBase]: 15/188 cut-off events. [2023-08-03 15:48:19,451 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:48:19,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 188 events. 15/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 342 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 139. Up to 6 conditions per place. [2023-08-03 15:48:19,462 INFO L119 LiptonReduction]: Number of co-enabled transitions 11780 [2023-08-03 15:48:23,885 INFO L134 LiptonReduction]: Checked pairs total: 23811 [2023-08-03 15:48:23,886 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-03 15:48:23,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:48:23,889 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;@2519a46a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:48:23,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 15:48:23,893 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:48:23,893 INFO L124 PetriNetUnfolderBase]: 3/33 cut-off events. [2023-08-03 15:48:23,893 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:48:23,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:23,893 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 15:48:23,893 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:23,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:23,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1302958535, now seen corresponding path program 1 times [2023-08-03 15:48:23,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:23,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714568277] [2023-08-03 15:48:23,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:23,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:48:24,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:24,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714568277] [2023-08-03 15:48:24,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714568277] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:48:24,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109833816] [2023-08-03 15:48:24,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:24,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:48:24,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:48:24,111 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) [2023-08-03 15:48:24,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 15:48:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:24,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 15:48:24,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:48:24,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:48:24,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:48:24,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109833816] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:24,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:48:24,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 15:48:24,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120142856] [2023-08-03 15:48:24,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:24,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:48:24,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:24,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:48:24,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:48:24,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 288 [2023-08-03 15:48:24,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 58 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:24,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:24,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 288 [2023-08-03 15:48:24,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:24,583 INFO L124 PetriNetUnfolderBase]: 934/1547 cut-off events. [2023-08-03 15:48:24,583 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-03 15:48:24,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 1547 events. 934/1547 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7715 event pairs, 0 based on Foata normal form. 0/1191 useless extension candidates. Maximal degree in co-relation 291. Up to 987 conditions per place. [2023-08-03 15:48:24,599 INFO L140 encePairwiseOnDemand]: 282/288 looper letters, 75 selfloop transitions, 4 changer transitions 1/101 dead transitions. [2023-08-03 15:48:24,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 101 transitions, 370 flow [2023-08-03 15:48:24,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:48:24,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:48:24,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 751 transitions. [2023-08-03 15:48:24,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215277777777778 [2023-08-03 15:48:24,615 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 751 transitions. [2023-08-03 15:48:24,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 751 transitions. [2023-08-03 15:48:24,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:24,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 751 transitions. [2023-08-03 15:48:24,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:24,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:24,630 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:24,632 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 128 flow. Second operand 5 states and 751 transitions. [2023-08-03 15:48:24,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 101 transitions, 370 flow [2023-08-03 15:48:24,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 101 transitions, 369 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:48:24,640 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 142 flow [2023-08-03 15:48:24,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2023-08-03 15:48:24,645 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2023-08-03 15:48:24,645 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 142 flow [2023-08-03 15:48:24,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:24,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:24,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:24,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 15:48:24,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:48:24,851 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:24,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:24,852 INFO L85 PathProgramCache]: Analyzing trace with hash -280930235, now seen corresponding path program 1 times [2023-08-03 15:48:24,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:24,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341277935] [2023-08-03 15:48:24,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:24,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:24,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:48:24,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:24,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341277935] [2023-08-03 15:48:24,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341277935] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:24,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:24,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:48:24,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641121047] [2023-08-03 15:48:24,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:24,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:48:24,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:24,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:48:24,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:48:24,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 288 [2023-08-03 15:48:24,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:24,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:24,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 288 [2023-08-03 15:48:24,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:25,222 INFO L124 PetriNetUnfolderBase]: 1171/2247 cut-off events. [2023-08-03 15:48:25,222 INFO L125 PetriNetUnfolderBase]: For 1159/1159 co-relation queries the response was YES. [2023-08-03 15:48:25,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4828 conditions, 2247 events. 1171/2247 cut-off events. For 1159/1159 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13657 event pairs, 281 based on Foata normal form. 0/1876 useless extension candidates. Maximal degree in co-relation 4195. Up to 1213 conditions per place. [2023-08-03 15:48:25,235 INFO L140 encePairwiseOnDemand]: 278/288 looper letters, 78 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2023-08-03 15:48:25,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 104 transitions, 460 flow [2023-08-03 15:48:25,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:48:25,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:48:25,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 731 transitions. [2023-08-03 15:48:25,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076388888888889 [2023-08-03 15:48:25,238 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 731 transitions. [2023-08-03 15:48:25,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 731 transitions. [2023-08-03 15:48:25,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:25,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 731 transitions. [2023-08-03 15:48:25,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:25,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:25,245 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:25,245 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 142 flow. Second operand 5 states and 731 transitions. [2023-08-03 15:48:25,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 104 transitions, 460 flow [2023-08-03 15:48:25,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 104 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:48:25,248 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 211 flow [2023-08-03 15:48:25,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=211, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-08-03 15:48:25,249 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2023-08-03 15:48:25,249 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 211 flow [2023-08-03 15:48:25,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:25,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:25,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:25,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 15:48:25,250 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:25,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:25,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1594258178, now seen corresponding path program 1 times [2023-08-03 15:48:25,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:25,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281131337] [2023-08-03 15:48:25,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:25,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:48:25,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:25,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281131337] [2023-08-03 15:48:25,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281131337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:25,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:25,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:48:25,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589668063] [2023-08-03 15:48:25,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:25,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:48:25,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:25,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:48:25,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:48:25,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 288 [2023-08-03 15:48:25,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:25,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:25,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 288 [2023-08-03 15:48:25,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:25,647 INFO L124 PetriNetUnfolderBase]: 1485/2757 cut-off events. [2023-08-03 15:48:25,647 INFO L125 PetriNetUnfolderBase]: For 2352/2369 co-relation queries the response was YES. [2023-08-03 15:48:25,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6777 conditions, 2757 events. 1485/2757 cut-off events. For 2352/2369 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 17062 event pairs, 312 based on Foata normal form. 72/2552 useless extension candidates. Maximal degree in co-relation 4221. Up to 1879 conditions per place. [2023-08-03 15:48:25,665 INFO L140 encePairwiseOnDemand]: 283/288 looper letters, 62 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2023-08-03 15:48:25,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 86 transitions, 435 flow [2023-08-03 15:48:25,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:48:25,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:48:25,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-08-03 15:48:25,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289351851851852 [2023-08-03 15:48:25,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-08-03 15:48:25,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-08-03 15:48:25,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:25,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-08-03 15:48:25,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:25,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:25,672 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:25,672 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 211 flow. Second operand 3 states and 457 transitions. [2023-08-03 15:48:25,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 86 transitions, 435 flow [2023-08-03 15:48:25,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 86 transitions, 435 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:48:25,676 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 232 flow [2023-08-03 15:48:25,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2023-08-03 15:48:25,677 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2023-08-03 15:48:25,678 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 232 flow [2023-08-03 15:48:25,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:25,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:25,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:25,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 15:48:25,679 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:25,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:25,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1321627054, now seen corresponding path program 1 times [2023-08-03 15:48:25,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:25,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437887458] [2023-08-03 15:48:25,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:25,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:48:25,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:25,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437887458] [2023-08-03 15:48:25,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437887458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:25,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:25,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:48:25,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530478132] [2023-08-03 15:48:25,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:25,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:48:25,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:25,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:48:25,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:48:25,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 288 [2023-08-03 15:48:25,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:25,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:25,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 288 [2023-08-03 15:48:25,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:26,127 INFO L124 PetriNetUnfolderBase]: 1786/3638 cut-off events. [2023-08-03 15:48:26,127 INFO L125 PetriNetUnfolderBase]: For 2603/2620 co-relation queries the response was YES. [2023-08-03 15:48:26,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8515 conditions, 3638 events. 1786/3638 cut-off events. For 2603/2620 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 25608 event pairs, 854 based on Foata normal form. 17/3263 useless extension candidates. Maximal degree in co-relation 5341. Up to 1815 conditions per place. [2023-08-03 15:48:26,154 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 65 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2023-08-03 15:48:26,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 94 transitions, 452 flow [2023-08-03 15:48:26,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:48:26,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:48:26,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2023-08-03 15:48:26,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393518518518519 [2023-08-03 15:48:26,157 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2023-08-03 15:48:26,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2023-08-03 15:48:26,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:26,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2023-08-03 15:48:26,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:26,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:26,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:26,161 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 232 flow. Second operand 3 states and 466 transitions. [2023-08-03 15:48:26,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 94 transitions, 452 flow [2023-08-03 15:48:26,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 94 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:48:26,168 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 247 flow [2023-08-03 15:48:26,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2023-08-03 15:48:26,170 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2023-08-03 15:48:26,170 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 247 flow [2023-08-03 15:48:26,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:26,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:26,170 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:26,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 15:48:26,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:26,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:26,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1490531057, now seen corresponding path program 1 times [2023-08-03 15:48:26,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:26,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122877655] [2023-08-03 15:48:26,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:26,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:26,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:48:26,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:26,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122877655] [2023-08-03 15:48:26,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122877655] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:26,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:26,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:48:26,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804369311] [2023-08-03 15:48:26,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:26,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:48:26,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:26,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:48:26,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:48:26,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 288 [2023-08-03 15:48:26,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:26,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:26,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 288 [2023-08-03 15:48:26,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:26,875 INFO L124 PetriNetUnfolderBase]: 2740/5555 cut-off events. [2023-08-03 15:48:26,876 INFO L125 PetriNetUnfolderBase]: For 4264/4281 co-relation queries the response was YES. [2023-08-03 15:48:26,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13184 conditions, 5555 events. 2740/5555 cut-off events. For 4264/4281 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 41211 event pairs, 1298 based on Foata normal form. 17/5225 useless extension candidates. Maximal degree in co-relation 8760. Up to 2729 conditions per place. [2023-08-03 15:48:26,913 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 67 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2023-08-03 15:48:26,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 96 transitions, 483 flow [2023-08-03 15:48:26,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:48:26,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:48:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 464 transitions. [2023-08-03 15:48:26,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2023-08-03 15:48:26,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 464 transitions. [2023-08-03 15:48:26,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 464 transitions. [2023-08-03 15:48:26,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:26,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 464 transitions. [2023-08-03 15:48:26,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:26,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:26,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:26,919 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 247 flow. Second operand 3 states and 464 transitions. [2023-08-03 15:48:26,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 96 transitions, 483 flow [2023-08-03 15:48:26,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 96 transitions, 475 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:48:26,924 INFO L231 Difference]: Finished difference. Result has 73 places, 70 transitions, 261 flow [2023-08-03 15:48:26,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=73, PETRI_TRANSITIONS=70} [2023-08-03 15:48:26,925 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2023-08-03 15:48:26,925 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 70 transitions, 261 flow [2023-08-03 15:48:26,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:26,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:26,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:26,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 15:48:26,926 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:26,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:26,926 INFO L85 PathProgramCache]: Analyzing trace with hash -887399513, now seen corresponding path program 1 times [2023-08-03 15:48:26,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:26,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857526777] [2023-08-03 15:48:26,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:26,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:48:26,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:26,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857526777] [2023-08-03 15:48:26,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857526777] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:26,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:26,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:48:26,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114872703] [2023-08-03 15:48:26,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:26,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:48:26,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:26,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:48:26,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:48:26,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 288 [2023-08-03 15:48:26,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 131.25) internal successors, (525), 4 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:26,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:26,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 288 [2023-08-03 15:48:26,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:28,115 INFO L124 PetriNetUnfolderBase]: 5472/10640 cut-off events. [2023-08-03 15:48:28,115 INFO L125 PetriNetUnfolderBase]: For 7529/7550 co-relation queries the response was YES. [2023-08-03 15:48:28,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25655 conditions, 10640 events. 5472/10640 cut-off events. For 7529/7550 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 81823 event pairs, 1068 based on Foata normal form. 142/10539 useless extension candidates. Maximal degree in co-relation 17646. Up to 2844 conditions per place. [2023-08-03 15:48:28,178 INFO L140 encePairwiseOnDemand]: 281/288 looper letters, 114 selfloop transitions, 11 changer transitions 6/155 dead transitions. [2023-08-03 15:48:28,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 155 transitions, 829 flow [2023-08-03 15:48:28,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:48:28,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:48:28,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 751 transitions. [2023-08-03 15:48:28,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215277777777778 [2023-08-03 15:48:28,181 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 751 transitions. [2023-08-03 15:48:28,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 751 transitions. [2023-08-03 15:48:28,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:28,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 751 transitions. [2023-08-03 15:48:28,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:28,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:28,188 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:28,189 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 261 flow. Second operand 5 states and 751 transitions. [2023-08-03 15:48:28,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 155 transitions, 829 flow [2023-08-03 15:48:28,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 155 transitions, 813 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:48:28,197 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 337 flow [2023-08-03 15:48:28,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=337, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2023-08-03 15:48:28,198 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 26 predicate places. [2023-08-03 15:48:28,198 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 337 flow [2023-08-03 15:48:28,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.25) internal successors, (525), 4 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:28,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:28,199 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, 1, 1, 1] [2023-08-03 15:48:28,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 15:48:28,199 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:28,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:28,200 INFO L85 PathProgramCache]: Analyzing trace with hash -514541892, now seen corresponding path program 1 times [2023-08-03 15:48:28,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:28,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229654485] [2023-08-03 15:48:28,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:28,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:48:28,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:28,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229654485] [2023-08-03 15:48:28,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229654485] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:28,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:28,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:48:28,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583578827] [2023-08-03 15:48:28,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:28,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:48:28,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:28,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:48:28,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:48:28,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 288 [2023-08-03 15:48:28,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 337 flow. Second operand has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:28,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:28,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 288 [2023-08-03 15:48:28,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:29,948 INFO L124 PetriNetUnfolderBase]: 7470/14633 cut-off events. [2023-08-03 15:48:29,949 INFO L125 PetriNetUnfolderBase]: For 15084/15116 co-relation queries the response was YES. [2023-08-03 15:48:29,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38136 conditions, 14633 events. 7470/14633 cut-off events. For 15084/15116 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 119961 event pairs, 1649 based on Foata normal form. 137/14519 useless extension candidates. Maximal degree in co-relation 25156. Up to 4353 conditions per place. [2023-08-03 15:48:29,996 INFO L140 encePairwiseOnDemand]: 281/288 looper letters, 79 selfloop transitions, 9 changer transitions 49/161 dead transitions. [2023-08-03 15:48:29,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 161 transitions, 979 flow [2023-08-03 15:48:29,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:48:29,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:48:29,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2023-08-03 15:48:29,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5152777777777777 [2023-08-03 15:48:29,999 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2023-08-03 15:48:29,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2023-08-03 15:48:29,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:29,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2023-08-03 15:48:30,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:30,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:30,004 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:30,004 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 337 flow. Second operand 5 states and 742 transitions. [2023-08-03 15:48:30,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 161 transitions, 979 flow [2023-08-03 15:48:30,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 161 transitions, 979 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:48:30,015 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 368 flow [2023-08-03 15:48:30,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=368, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2023-08-03 15:48:30,016 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 33 predicate places. [2023-08-03 15:48:30,016 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 368 flow [2023-08-03 15:48:30,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:30,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:30,017 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, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:30,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 15:48:30,017 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:30,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:30,017 INFO L85 PathProgramCache]: Analyzing trace with hash -434361986, now seen corresponding path program 1 times [2023-08-03 15:48:30,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:30,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641892662] [2023-08-03 15:48:30,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:30,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:48:30,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:30,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641892662] [2023-08-03 15:48:30,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641892662] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:30,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:30,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:48:30,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569733653] [2023-08-03 15:48:30,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:30,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:48:30,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:30,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:48:30,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:48:30,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 288 [2023-08-03 15:48:30,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 368 flow. Second operand has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:30,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:30,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 288 [2023-08-03 15:48:30,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:31,766 INFO L124 PetriNetUnfolderBase]: 6696/13683 cut-off events. [2023-08-03 15:48:31,766 INFO L125 PetriNetUnfolderBase]: For 15611/15725 co-relation queries the response was YES. [2023-08-03 15:48:31,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36555 conditions, 13683 events. 6696/13683 cut-off events. For 15611/15725 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 115516 event pairs, 2078 based on Foata normal form. 42/13172 useless extension candidates. Maximal degree in co-relation 25221. Up to 5118 conditions per place. [2023-08-03 15:48:31,817 INFO L140 encePairwiseOnDemand]: 276/288 looper letters, 107 selfloop transitions, 22 changer transitions 0/159 dead transitions. [2023-08-03 15:48:31,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 159 transitions, 1004 flow [2023-08-03 15:48:31,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:48:31,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:48:31,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 758 transitions. [2023-08-03 15:48:31,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263888888888889 [2023-08-03 15:48:31,820 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 758 transitions. [2023-08-03 15:48:31,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 758 transitions. [2023-08-03 15:48:31,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:31,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 758 transitions. [2023-08-03 15:48:31,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.6) internal successors, (758), 5 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:31,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:31,824 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:31,824 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 368 flow. Second operand 5 states and 758 transitions. [2023-08-03 15:48:31,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 159 transitions, 1004 flow [2023-08-03 15:48:31,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 159 transitions, 1000 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 15:48:31,839 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 513 flow [2023-08-03 15:48:31,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=513, PETRI_PLACES=91, PETRI_TRANSITIONS=94} [2023-08-03 15:48:31,842 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 38 predicate places. [2023-08-03 15:48:31,842 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 513 flow [2023-08-03 15:48:31,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:31,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:31,842 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, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:31,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 15:48:31,844 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:31,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:31,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1602472234, now seen corresponding path program 2 times [2023-08-03 15:48:31,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:31,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312732264] [2023-08-03 15:48:31,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:31,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:48:31,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:31,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312732264] [2023-08-03 15:48:31,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312732264] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:31,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:31,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:48:31,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620381575] [2023-08-03 15:48:31,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:31,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:48:31,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:31,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:48:31,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:48:31,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 288 [2023-08-03 15:48:31,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 513 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:31,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:31,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 288 [2023-08-03 15:48:31,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:33,348 INFO L124 PetriNetUnfolderBase]: 6599/13484 cut-off events. [2023-08-03 15:48:33,348 INFO L125 PetriNetUnfolderBase]: For 21205/21396 co-relation queries the response was YES. [2023-08-03 15:48:33,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40036 conditions, 13484 events. 6599/13484 cut-off events. For 21205/21396 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 112252 event pairs, 1977 based on Foata normal form. 154/13406 useless extension candidates. Maximal degree in co-relation 29151. Up to 9447 conditions per place. [2023-08-03 15:48:33,397 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 58 selfloop transitions, 3 changer transitions 15/101 dead transitions. [2023-08-03 15:48:33,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 101 transitions, 709 flow [2023-08-03 15:48:33,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:48:33,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:48:33,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2023-08-03 15:48:33,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2023-08-03 15:48:33,400 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2023-08-03 15:48:33,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2023-08-03 15:48:33,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:33,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2023-08-03 15:48:33,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:33,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:33,403 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:33,403 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 513 flow. Second operand 3 states and 448 transitions. [2023-08-03 15:48:33,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 101 transitions, 709 flow [2023-08-03 15:48:33,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 101 transitions, 707 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 15:48:33,423 INFO L231 Difference]: Finished difference. Result has 93 places, 83 transitions, 445 flow [2023-08-03 15:48:33,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=445, PETRI_PLACES=93, PETRI_TRANSITIONS=83} [2023-08-03 15:48:33,424 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 40 predicate places. [2023-08-03 15:48:33,424 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 83 transitions, 445 flow [2023-08-03 15:48:33,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:33,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:33,424 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, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:33,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 15:48:33,424 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:33,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:33,425 INFO L85 PathProgramCache]: Analyzing trace with hash 22371900, now seen corresponding path program 1 times [2023-08-03 15:48:33,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:33,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955567374] [2023-08-03 15:48:33,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:33,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:33,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:48:33,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:33,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955567374] [2023-08-03 15:48:33,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955567374] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:33,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:33,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 15:48:33,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17896097] [2023-08-03 15:48:33,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:33,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:48:33,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:33,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:48:33,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:48:33,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 288 [2023-08-03 15:48:33,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 83 transitions, 445 flow. Second operand has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:33,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:33,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 288 [2023-08-03 15:48:33,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:35,262 INFO L124 PetriNetUnfolderBase]: 8004/16244 cut-off events. [2023-08-03 15:48:35,262 INFO L125 PetriNetUnfolderBase]: For 25280/25507 co-relation queries the response was YES. [2023-08-03 15:48:35,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48344 conditions, 16244 events. 8004/16244 cut-off events. For 25280/25507 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 137570 event pairs, 1173 based on Foata normal form. 67/16064 useless extension candidates. Maximal degree in co-relation 32011. Up to 4397 conditions per place. [2023-08-03 15:48:35,322 INFO L140 encePairwiseOnDemand]: 281/288 looper letters, 135 selfloop transitions, 19 changer transitions 9/185 dead transitions. [2023-08-03 15:48:35,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 185 transitions, 1322 flow [2023-08-03 15:48:35,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 15:48:35,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 15:48:35,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 990 transitions. [2023-08-03 15:48:35,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2023-08-03 15:48:35,326 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 990 transitions. [2023-08-03 15:48:35,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 990 transitions. [2023-08-03 15:48:35,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:35,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 990 transitions. [2023-08-03 15:48:35,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 141.42857142857142) internal successors, (990), 7 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:35,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 288.0) internal successors, (2304), 8 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:35,332 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 288.0) internal successors, (2304), 8 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:35,332 INFO L175 Difference]: Start difference. First operand has 93 places, 83 transitions, 445 flow. Second operand 7 states and 990 transitions. [2023-08-03 15:48:35,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 185 transitions, 1322 flow [2023-08-03 15:48:35,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 185 transitions, 1296 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-03 15:48:35,364 INFO L231 Difference]: Finished difference. Result has 97 places, 97 transitions, 585 flow [2023-08-03 15:48:35,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=585, PETRI_PLACES=97, PETRI_TRANSITIONS=97} [2023-08-03 15:48:35,365 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 44 predicate places. [2023-08-03 15:48:35,365 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 97 transitions, 585 flow [2023-08-03 15:48:35,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:35,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:35,366 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, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:35,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 15:48:35,366 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:35,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:35,367 INFO L85 PathProgramCache]: Analyzing trace with hash 550848058, now seen corresponding path program 2 times [2023-08-03 15:48:35,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:35,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690492915] [2023-08-03 15:48:35,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:35,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:35,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:48:35,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:35,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690492915] [2023-08-03 15:48:35,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690492915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:35,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:35,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 15:48:35,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291398589] [2023-08-03 15:48:35,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:35,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:48:35,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:35,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:48:35,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:48:35,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 288 [2023-08-03 15:48:35,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 97 transitions, 585 flow. Second operand has 5 states, 5 states have (on average 128.6) internal successors, (643), 5 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:35,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:35,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 288 [2023-08-03 15:48:35,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:37,101 INFO L124 PetriNetUnfolderBase]: 7544/15658 cut-off events. [2023-08-03 15:48:37,102 INFO L125 PetriNetUnfolderBase]: For 25019/25258 co-relation queries the response was YES. [2023-08-03 15:48:37,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45648 conditions, 15658 events. 7544/15658 cut-off events. For 25019/25258 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 134089 event pairs, 1542 based on Foata normal form. 127/15553 useless extension candidates. Maximal degree in co-relation 45211. Up to 6737 conditions per place. [2023-08-03 15:48:37,157 INFO L140 encePairwiseOnDemand]: 282/288 looper letters, 79 selfloop transitions, 5 changer transitions 58/164 dead transitions. [2023-08-03 15:48:37,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 164 transitions, 1200 flow [2023-08-03 15:48:37,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:48:37,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:48:37,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 844 transitions. [2023-08-03 15:48:37,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48842592592592593 [2023-08-03 15:48:37,163 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 844 transitions. [2023-08-03 15:48:37,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 844 transitions. [2023-08-03 15:48:37,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:37,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 844 transitions. [2023-08-03 15:48:37,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 140.66666666666666) internal successors, (844), 6 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:37,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:37,168 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:37,168 INFO L175 Difference]: Start difference. First operand has 97 places, 97 transitions, 585 flow. Second operand 6 states and 844 transitions. [2023-08-03 15:48:37,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 164 transitions, 1200 flow [2023-08-03 15:48:37,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 164 transitions, 1170 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-03 15:48:37,192 INFO L231 Difference]: Finished difference. Result has 98 places, 77 transitions, 413 flow [2023-08-03 15:48:37,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=413, PETRI_PLACES=98, PETRI_TRANSITIONS=77} [2023-08-03 15:48:37,193 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2023-08-03 15:48:37,193 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 77 transitions, 413 flow [2023-08-03 15:48:37,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.6) internal successors, (643), 5 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:37,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:37,194 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, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:37,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 15:48:37,194 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:37,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:37,194 INFO L85 PathProgramCache]: Analyzing trace with hash -144320426, now seen corresponding path program 3 times [2023-08-03 15:48:37,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:37,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320527414] [2023-08-03 15:48:37,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:37,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:37,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:48:37,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:37,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320527414] [2023-08-03 15:48:37,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320527414] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:48:37,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402356047] [2023-08-03 15:48:37,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-03 15:48:37,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:48:37,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:48:37,434 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) [2023-08-03 15:48:37,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 15:48:37,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-03 15:48:37,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 15:48:37,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-03 15:48:37,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:48:37,605 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-03 15:48:37,605 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-03 15:48:37,670 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-03 15:48:37,711 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 15:48:37,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:48:37,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:48:37,817 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 15:48:37,817 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2023-08-03 15:48:37,820 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-08-03 15:48:37,825 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-08-03 15:48:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:48:37,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402356047] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:48:37,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:48:37,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-08-03 15:48:37,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798661573] [2023-08-03 15:48:37,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:48:37,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 15:48:37,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:37,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 15:48:37,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-08-03 15:48:37,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 288 [2023-08-03 15:48:37,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 77 transitions, 413 flow. Second operand has 11 states, 11 states have (on average 130.0) internal successors, (1430), 11 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:37,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:37,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 288 [2023-08-03 15:48:37,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:38,141 INFO L124 PetriNetUnfolderBase]: 220/604 cut-off events. [2023-08-03 15:48:38,141 INFO L125 PetriNetUnfolderBase]: For 933/950 co-relation queries the response was YES. [2023-08-03 15:48:38,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1853 conditions, 604 events. 220/604 cut-off events. For 933/950 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3011 event pairs, 47 based on Foata normal form. 20/623 useless extension candidates. Maximal degree in co-relation 1830. Up to 128 conditions per place. [2023-08-03 15:48:38,145 INFO L140 encePairwiseOnDemand]: 281/288 looper letters, 0 selfloop transitions, 0 changer transitions 101/101 dead transitions. [2023-08-03 15:48:38,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 101 transitions, 664 flow [2023-08-03 15:48:38,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 15:48:38,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 15:48:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1089 transitions. [2023-08-03 15:48:38,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47265625 [2023-08-03 15:48:38,148 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1089 transitions. [2023-08-03 15:48:38,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1089 transitions. [2023-08-03 15:48:38,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:38,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1089 transitions. [2023-08-03 15:48:38,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.125) internal successors, (1089), 8 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:38,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 288.0) internal successors, (2592), 9 states have internal predecessors, (2592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:38,155 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 288.0) internal successors, (2592), 9 states have internal predecessors, (2592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:38,155 INFO L175 Difference]: Start difference. First operand has 98 places, 77 transitions, 413 flow. Second operand 8 states and 1089 transitions. [2023-08-03 15:48:38,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 101 transitions, 664 flow [2023-08-03 15:48:38,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 101 transitions, 623 flow, removed 13 selfloop flow, removed 8 redundant places. [2023-08-03 15:48:38,159 INFO L231 Difference]: Finished difference. Result has 68 places, 0 transitions, 0 flow [2023-08-03 15:48:38,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=68, PETRI_TRANSITIONS=0} [2023-08-03 15:48:38,160 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2023-08-03 15:48:38,160 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 0 transitions, 0 flow [2023-08-03 15:48:38,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.0) internal successors, (1430), 11 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:38,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 15:48:38,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 15:48:38,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 15:48:38,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 15:48:38,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 15:48:38,366 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,SelfDestructingSolverStorable12 [2023-08-03 15:48:38,366 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:38,369 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:48:38,369 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:48:38,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:48:38 BasicIcfg [2023-08-03 15:48:38,372 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:48:38,373 INFO L158 Benchmark]: Toolchain (without parser) took 25797.01ms. Allocated memory was 369.1MB in the beginning and 4.8GB in the end (delta: 4.5GB). Free memory was 319.2MB in the beginning and 3.7GB in the end (delta: -3.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-08-03 15:48:38,373 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 369.1MB. Free memory is still 321.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:48:38,373 INFO L158 Benchmark]: CACSL2BoogieTranslator took 419.97ms. Allocated memory is still 369.1MB. Free memory was 319.2MB in the beginning and 298.6MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 15:48:38,373 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.71ms. Allocated memory is still 369.1MB. Free memory was 298.6MB in the beginning and 296.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:48:38,373 INFO L158 Benchmark]: Boogie Preprocessor took 33.08ms. Allocated memory is still 369.1MB. Free memory was 296.1MB in the beginning and 294.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:48:38,374 INFO L158 Benchmark]: RCFGBuilder took 711.26ms. Allocated memory was 369.1MB in the beginning and 536.9MB in the end (delta: 167.8MB). Free memory was 294.1MB in the beginning and 481.4MB in the end (delta: -187.3MB). Peak memory consumption was 21.3MB. Max. memory is 16.0GB. [2023-08-03 15:48:38,374 INFO L158 Benchmark]: TraceAbstraction took 24562.17ms. Allocated memory was 536.9MB in the beginning and 4.8GB in the end (delta: 4.3GB). Free memory was 480.3MB in the beginning and 3.7GB in the end (delta: -3.2GB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-08-03 15:48:38,375 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 369.1MB. Free memory is still 321.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 419.97ms. Allocated memory is still 369.1MB. Free memory was 319.2MB in the beginning and 298.6MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 62.71ms. Allocated memory is still 369.1MB. Free memory was 298.6MB in the beginning and 296.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.08ms. Allocated memory is still 369.1MB. Free memory was 296.1MB in the beginning and 294.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 711.26ms. Allocated memory was 369.1MB in the beginning and 536.9MB in the end (delta: 167.8MB). Free memory was 294.1MB in the beginning and 481.4MB in the end (delta: -187.3MB). Peak memory consumption was 21.3MB. Max. memory is 16.0GB. * TraceAbstraction took 24562.17ms. Allocated memory was 536.9MB in the beginning and 4.8GB in the end (delta: 4.3GB). Free memory was 480.3MB in the beginning and 3.7GB in the end (delta: -3.2GB). Peak memory consumption was 1.1GB. 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: 5.1s, 96 PlacesBefore, 17 PlacesAfterwards, 100 TransitionsBefore, 17 TransitionsAfterwards, 1984 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 4 ChoiceCompositions, 99 TotalNumberOfCompositions, 1726 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1518, independent: 1471, independent conditional: 0, independent unconditional: 1471, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1073, independent: 1049, independent conditional: 0, independent unconditional: 1049, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1518, independent: 422, independent conditional: 0, independent unconditional: 422, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 1073, unknown conditional: 0, unknown unconditional: 1073] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 155 PlacesBefore, 53 PlacesAfterwards, 163 TransitionsBefore, 58 TransitionsAfterwards, 11780 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 79 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 23 ConcurrentYvCompositions, 3 ChoiceCompositions, 125 TotalNumberOfCompositions, 23811 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10674, independent: 10291, independent conditional: 0, independent unconditional: 10291, dependent: 383, dependent conditional: 0, dependent unconditional: 383, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5875, independent: 5809, independent conditional: 0, independent unconditional: 5809, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10674, independent: 4482, independent conditional: 0, independent unconditional: 4482, dependent: 317, dependent conditional: 0, dependent unconditional: 317, unknown: 5875, unknown conditional: 0, unknown unconditional: 5875] , Statistics on independence cache: Total cache size (in pairs): 358, Positive cache size: 326, Positive conditional cache size: 0, Positive unconditional cache size: 326, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 749]: 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, 151 locations, 3 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: 5.3s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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 with 2 thread instances CFG has 4 procedures, 208 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.0s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 12.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 809 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 701 mSDsluCounter, 152 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 108 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2122 IncrementalHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 44 mSDtfsCounter, 2122 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=585occurred in iteration=10, InterpolantAutomatonStates: 58, 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, 1.5s InterpolantComputationTime, 298 NumberOfCodeBlocks, 298 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 311 ConstructedInterpolants, 3 QuantifiedInterpolants, 794 SizeOfPredicates, 6 NumberOfNonLiveVariables, 404 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 26/34 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 15:48:38,390 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...