/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix005.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 05:31:26,749 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 05:31:26,794 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 05:31:26,796 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 05:31:26,800 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 05:31:26,801 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 05:31:26,801 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 05:31:26,823 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 05:31:26,823 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 05:31:26,824 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 05:31:26,824 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 05:31:26,824 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 05:31:26,825 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 05:31:26,825 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 05:31:26,825 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 05:31:26,825 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 05:31:26,825 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 05:31:26,826 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 05:31:26,826 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 05:31:26,826 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 05:31:26,826 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 05:31:26,830 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 05:31:26,830 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 05:31:26,830 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 05:31:26,834 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 05:31:26,834 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 05:31:26,834 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 05:31:26,835 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 05:31:26,835 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 05:31:26,835 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 05:31:26,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:31:26,836 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 05:31:26,836 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 05:31:26,837 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 05:31:26,837 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 05:31:26,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 05:31:26,837 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 05:31:26,837 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 05:31:26,837 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 05:31:26,837 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 05:31:26,837 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 05:31:26,837 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 05:31:27,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 05:31:27,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 05:31:27,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 05:31:27,041 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 05:31:27,042 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 05:31:27,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix005.opt_bound2.i [2023-08-04 05:31:28,029 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 05:31:28,293 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 05:31:28,293 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix005.opt_bound2.i [2023-08-04 05:31:28,311 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d722cf9b3/0aaac449e54945049214eadd8dc885a8/FLAG86cb6be4c [2023-08-04 05:31:28,324 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d722cf9b3/0aaac449e54945049214eadd8dc885a8 [2023-08-04 05:31:28,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 05:31:28,328 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 05:31:28,329 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 05:31:28,329 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 05:31:28,331 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 05:31:28,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:31:28" (1/1) ... [2023-08-04 05:31:28,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c092c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:31:28, skipping insertion in model container [2023-08-04 05:31:28,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:31:28" (1/1) ... [2023-08-04 05:31:28,366 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 05:31:28,500 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix005.opt_bound2.i[944,957] [2023-08-04 05:31:28,704 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:31:28,718 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 05:31:28,728 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix005.opt_bound2.i[944,957] [2023-08-04 05:31:28,745 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:31:28,747 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:31:28,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:31:28,807 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:31:28,808 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:31:28,812 INFO L206 MainTranslator]: Completed translation [2023-08-04 05:31:28,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:31:28 WrapperNode [2023-08-04 05:31:28,815 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 05:31:28,815 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 05:31:28,816 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 05:31:28,816 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 05:31:28,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:31:28" (1/1) ... [2023-08-04 05:31:28,847 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:31:28" (1/1) ... [2023-08-04 05:31:28,873 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 198 [2023-08-04 05:31:28,874 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 05:31:28,874 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 05:31:28,874 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 05:31:28,874 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 05:31:28,880 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:31:28" (1/1) ... [2023-08-04 05:31:28,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:31:28" (1/1) ... [2023-08-04 05:31:28,883 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:31:28" (1/1) ... [2023-08-04 05:31:28,883 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:31:28" (1/1) ... [2023-08-04 05:31:28,900 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:31:28" (1/1) ... [2023-08-04 05:31:28,903 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:31:28" (1/1) ... [2023-08-04 05:31:28,905 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:31:28" (1/1) ... [2023-08-04 05:31:28,907 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:31:28" (1/1) ... [2023-08-04 05:31:28,926 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 05:31:28,927 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 05:31:28,927 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 05:31:28,927 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 05:31:28,928 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:31:28" (1/1) ... [2023-08-04 05:31:28,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:31:28,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:31:28,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 05:31:28,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 05:31:28,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 05:31:28,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 05:31:28,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 05:31:28,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 05:31:28,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 05:31:28,993 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 05:31:28,993 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 05:31:28,994 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 05:31:28,994 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 05:31:28,994 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 05:31:28,994 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 05:31:28,994 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 05:31:28,995 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 05:31:28,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 05:31:28,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 05:31:28,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 05:31:28,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 05:31:28,997 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 05:31:29,159 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 05:31:29,160 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 05:31:29,560 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 05:31:29,642 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 05:31:29,642 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 05:31:29,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:31:29 BoogieIcfgContainer [2023-08-04 05:31:29,644 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 05:31:29,647 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 05:31:29,647 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 05:31:29,650 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 05:31:29,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 05:31:28" (1/3) ... [2023-08-04 05:31:29,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a301799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:31:29, skipping insertion in model container [2023-08-04 05:31:29,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:31:28" (2/3) ... [2023-08-04 05:31:29,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a301799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:31:29, skipping insertion in model container [2023-08-04 05:31:29,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:31:29" (3/3) ... [2023-08-04 05:31:29,652 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix005.opt_bound2.i [2023-08-04 05:31:29,658 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 05:31:29,664 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 05:31:29,665 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 05:31:29,665 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 05:31:29,714 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:31:29,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:31:29,895 INFO L124 PetriNetUnfolderBase]: 62/938 cut-off events. [2023-08-04 05:31:29,896 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:31:29,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 938 events. 62/938 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5812 event pairs, 0 based on Foata normal form. 0/822 useless extension candidates. Maximal degree in co-relation 551. Up to 32 conditions per place. [2023-08-04 05:31:29,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:31:29,915 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 155 transitions, 324 flow [2023-08-04 05:31:29,917 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:31:29,927 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 155 transitions, 324 flow [2023-08-04 05:31:29,933 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 155 transitions, 324 flow [2023-08-04 05:31:29,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 155 transitions, 324 flow [2023-08-04 05:31:30,058 INFO L124 PetriNetUnfolderBase]: 62/931 cut-off events. [2023-08-04 05:31:30,059 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:31:30,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 931 events. 62/931 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5739 event pairs, 0 based on Foata normal form. 0/815 useless extension candidates. Maximal degree in co-relation 537. Up to 32 conditions per place. [2023-08-04 05:31:30,079 INFO L119 LiptonReduction]: Number of co-enabled transitions 3914 [2023-08-04 05:31:33,656 INFO L134 LiptonReduction]: Checked pairs total: 9140 [2023-08-04 05:31:33,656 INFO L136 LiptonReduction]: Total number of compositions: 134 [2023-08-04 05:31:33,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:31:33,669 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;@7ef7095c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:31:33,669 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:31:33,673 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:31:33,673 INFO L124 PetriNetUnfolderBase]: 1/38 cut-off events. [2023-08-04 05:31:33,673 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:31:33,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:31:33,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:31:33,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:31:33,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:31:33,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1043376795, now seen corresponding path program 1 times [2023-08-04 05:31:33,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:31:33,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15925714] [2023-08-04 05:31:33,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:31:33,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:31:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:31:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:31:33,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:31:33,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15925714] [2023-08-04 05:31:33,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15925714] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:31:33,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:31:33,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:31:33,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047409320] [2023-08-04 05:31:33,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:31:33,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:31:33,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:31:33,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:31:33,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:31:33,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 292 [2023-08-04 05:31:33,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:33,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:31:33,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 292 [2023-08-04 05:31:33,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:31:34,799 INFO L124 PetriNetUnfolderBase]: 7194/10770 cut-off events. [2023-08-04 05:31:34,800 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 05:31:34,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21262 conditions, 10770 events. 7194/10770 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 66604 event pairs, 6164 based on Foata normal form. 0/9372 useless extension candidates. Maximal degree in co-relation 21248. Up to 10282 conditions per place. [2023-08-04 05:31:34,856 INFO L140 encePairwiseOnDemand]: 288/292 looper letters, 32 selfloop transitions, 2 changer transitions 1/40 dead transitions. [2023-08-04 05:31:34,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 164 flow [2023-08-04 05:31:34,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:31:34,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:31:34,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2023-08-04 05:31:34,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114155251141552 [2023-08-04 05:31:34,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2023-08-04 05:31:34,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2023-08-04 05:31:34,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:31:34,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2023-08-04 05:31:34,875 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) [2023-08-04 05:31:34,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:34,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:34,882 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 90 flow. Second operand 3 states and 448 transitions. [2023-08-04 05:31:34,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 164 flow [2023-08-04 05:31:34,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 05:31:34,886 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 96 flow [2023-08-04 05:31:34,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-04 05:31:34,890 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 3 predicate places. [2023-08-04 05:31:34,891 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 96 flow [2023-08-04 05:31:34,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:34,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:31:34,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:31:34,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 05:31:34,892 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:31:34,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:31:34,898 INFO L85 PathProgramCache]: Analyzing trace with hash 614301120, now seen corresponding path program 1 times [2023-08-04 05:31:34,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:31:34,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552502216] [2023-08-04 05:31:34,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:31:34,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:31:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:31:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:31:34,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:31:34,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552502216] [2023-08-04 05:31:34,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552502216] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:31:34,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404511333] [2023-08-04 05:31:34,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:31:34,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:31:34,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:31:34,999 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:31:35,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 05:31:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:31:35,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:31:35,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:31:35,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 05:31:35,102 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:31:35,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404511333] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:31:35,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:31:35,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:31:35,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934907493] [2023-08-04 05:31:35,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:31:35,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:31:35,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:31:35,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:31:35,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:31:35,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 292 [2023-08-04 05:31:35,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:35,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:31:35,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 292 [2023-08-04 05:31:35,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:31:35,730 INFO L124 PetriNetUnfolderBase]: 5786/8480 cut-off events. [2023-08-04 05:31:35,732 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-04 05:31:35,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16766 conditions, 8480 events. 5786/8480 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 49105 event pairs, 5005 based on Foata normal form. 0/7435 useless extension candidates. Maximal degree in co-relation 16749. Up to 8092 conditions per place. [2023-08-04 05:31:35,782 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 34 selfloop transitions, 2 changer transitions 1/42 dead transitions. [2023-08-04 05:31:35,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 180 flow [2023-08-04 05:31:35,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:31:35,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:31:35,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-08-04 05:31:35,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125570776255708 [2023-08-04 05:31:35,789 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-08-04 05:31:35,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-08-04 05:31:35,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:31:35,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-08-04 05:31:35,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:35,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:35,792 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:35,793 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 96 flow. Second operand 3 states and 449 transitions. [2023-08-04 05:31:35,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 180 flow [2023-08-04 05:31:35,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:31:35,795 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 100 flow [2023-08-04 05:31:35,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-08-04 05:31:35,796 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-08-04 05:31:35,796 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 100 flow [2023-08-04 05:31:35,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:35,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:31:35,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:31:35,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 05:31:36,001 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 [2023-08-04 05:31:36,002 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:31:36,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:31:36,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1905182265, now seen corresponding path program 1 times [2023-08-04 05:31:36,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:31:36,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801917817] [2023-08-04 05:31:36,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:31:36,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:31:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:31:36,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 05:31:36,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:31:36,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801917817] [2023-08-04 05:31:36,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801917817] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:31:36,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325004617] [2023-08-04 05:31:36,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:31:36,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:31:36,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:31:36,103 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:31:36,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 05:31:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:31:36,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:31:36,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:31:36,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:31:36,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:31:36,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325004617] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:31:36,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:31:36,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:31:36,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582622568] [2023-08-04 05:31:36,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:31:36,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:31:36,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:31:36,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:31:36,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:31:36,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 292 [2023-08-04 05:31:36,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:36,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:31:36,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 292 [2023-08-04 05:31:36,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:31:36,746 INFO L124 PetriNetUnfolderBase]: 4940/7139 cut-off events. [2023-08-04 05:31:36,746 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-04 05:31:36,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14156 conditions, 7139 events. 4940/7139 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 39946 event pairs, 3518 based on Foata normal form. 0/6343 useless extension candidates. Maximal degree in co-relation 14139. Up to 6713 conditions per place. [2023-08-04 05:31:36,768 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 37 selfloop transitions, 2 changer transitions 1/45 dead transitions. [2023-08-04 05:31:36,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 196 flow [2023-08-04 05:31:36,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:31:36,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:31:36,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-08-04 05:31:36,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159817351598174 [2023-08-04 05:31:36,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-08-04 05:31:36,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-08-04 05:31:36,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:31:36,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-08-04 05:31:36,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:36,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:36,773 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:36,773 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 100 flow. Second operand 3 states and 452 transitions. [2023-08-04 05:31:36,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 196 flow [2023-08-04 05:31:36,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 45 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:31:36,774 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 104 flow [2023-08-04 05:31:36,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2023-08-04 05:31:36,775 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2023-08-04 05:31:36,775 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 104 flow [2023-08-04 05:31:36,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:36,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:31:36,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:31:36,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 05:31:36,980 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,SelfDestructingSolverStorable2 [2023-08-04 05:31:36,980 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:31:36,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:31:36,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2046077184, now seen corresponding path program 1 times [2023-08-04 05:31:36,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:31:36,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857215236] [2023-08-04 05:31:36,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:31:36,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:31:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:31:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:31:37,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:31:37,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857215236] [2023-08-04 05:31:37,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857215236] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:31:37,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563478078] [2023-08-04 05:31:37,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:31:37,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:31:37,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:31:37,039 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:31:37,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 05:31:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:31:37,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:31:37,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:31:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:31:37,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:31:37,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563478078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:31:37,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:31:37,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:31:37,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364033790] [2023-08-04 05:31:37,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:31:37,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:31:37,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:31:37,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:31:37,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:31:37,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 292 [2023-08-04 05:31:37,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:37,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:31:37,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 292 [2023-08-04 05:31:37,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:31:37,678 INFO L124 PetriNetUnfolderBase]: 4640/6677 cut-off events. [2023-08-04 05:31:37,678 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-04 05:31:37,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13536 conditions, 6677 events. 4640/6677 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 37173 event pairs, 2960 based on Foata normal form. 0/5989 useless extension candidates. Maximal degree in co-relation 13518. Up to 5507 conditions per place. [2023-08-04 05:31:37,708 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 43 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-04 05:31:37,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 220 flow [2023-08-04 05:31:37,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:31:37,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:31:37,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-08-04 05:31:37,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.521689497716895 [2023-08-04 05:31:37,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-08-04 05:31:37,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-08-04 05:31:37,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:31:37,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-08-04 05:31:37,711 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) [2023-08-04 05:31:37,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:37,713 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:37,713 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 104 flow. Second operand 3 states and 457 transitions. [2023-08-04 05:31:37,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 220 flow [2023-08-04 05:31:37,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:31:37,715 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 108 flow [2023-08-04 05:31:37,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-08-04 05:31:37,716 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 6 predicate places. [2023-08-04 05:31:37,716 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 108 flow [2023-08-04 05:31:37,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:37,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:31:37,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:31:37,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-04 05:31:37,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:31:37,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:31:37,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:31:37,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2046100369, now seen corresponding path program 1 times [2023-08-04 05:31:37,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:31:37,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9609765] [2023-08-04 05:31:37,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:31:37,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:31:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:31:37,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:31:37,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:31:37,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9609765] [2023-08-04 05:31:37,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9609765] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:31:37,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860620617] [2023-08-04 05:31:37,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:31:37,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:31:37,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:31:37,959 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:31:38,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 05:31:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:31:38,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:31:38,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:31:38,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:31:38,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:31:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:31:38,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860620617] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:31:38,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:31:38,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 05:31:38,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890013351] [2023-08-04 05:31:38,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:31:38,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 05:31:38,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:31:38,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 05:31:38,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:31:38,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 292 [2023-08-04 05:31:38,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:38,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:31:38,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 292 [2023-08-04 05:31:38,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:31:38,133 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 05:31:38,133 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 05:31:38,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 16 events. 4/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 1 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2023-08-04 05:31:38,133 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 05:31:38,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 10 transitions, 43 flow [2023-08-04 05:31:38,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:31:38,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:31:38,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 554 transitions. [2023-08-04 05:31:38,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4743150684931507 [2023-08-04 05:31:38,135 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 554 transitions. [2023-08-04 05:31:38,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 554 transitions. [2023-08-04 05:31:38,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:31:38,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 554 transitions. [2023-08-04 05:31:38,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:38,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:38,138 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:38,138 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 108 flow. Second operand 4 states and 554 transitions. [2023-08-04 05:31:38,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 10 transitions, 43 flow [2023-08-04 05:31:38,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 10 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 05:31:38,139 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2023-08-04 05:31:38,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2023-08-04 05:31:38,141 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -26 predicate places. [2023-08-04 05:31:38,141 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2023-08-04 05:31:38,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:38,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 05:31:38,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 05:31:38,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 05:31:38,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 05:31:38,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:31:38,349 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-04 05:31:38,350 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 05:31:38,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:31:38,421 INFO L124 PetriNetUnfolderBase]: 62/938 cut-off events. [2023-08-04 05:31:38,422 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:31:38,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 938 events. 62/938 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5812 event pairs, 0 based on Foata normal form. 0/822 useless extension candidates. Maximal degree in co-relation 551. Up to 32 conditions per place. [2023-08-04 05:31:38,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:31:38,424 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 127 transitions, 274 flow [2023-08-04 05:31:38,424 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:31:38,425 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 127 transitions, 274 flow [2023-08-04 05:31:38,425 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 127 transitions, 274 flow [2023-08-04 05:31:38,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 127 transitions, 274 flow [2023-08-04 05:31:38,451 INFO L124 PetriNetUnfolderBase]: 14/442 cut-off events. [2023-08-04 05:31:38,451 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:31:38,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 442 events. 14/442 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2045 event pairs, 0 based on Foata normal form. 0/406 useless extension candidates. Maximal degree in co-relation 303. Up to 16 conditions per place. [2023-08-04 05:31:38,455 INFO L119 LiptonReduction]: Number of co-enabled transitions 2252 [2023-08-04 05:31:41,338 INFO L134 LiptonReduction]: Checked pairs total: 4853 [2023-08-04 05:31:41,338 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-08-04 05:31:41,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 05:31:41,340 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;@7ef7095c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:31:41,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:31:41,343 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:31:41,343 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-04 05:31:41,343 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:31:41,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:31:41,343 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 05:31:41,343 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 05:31:41,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:31:41,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1540599279, now seen corresponding path program 1 times [2023-08-04 05:31:41,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:31:41,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699209163] [2023-08-04 05:31:41,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:31:41,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:31:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:31:41,355 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:31:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:31:41,374 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:31:41,375 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:31:41,375 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 05:31:41,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 05:31:41,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 05:31:41,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 05:31:41,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 05:31:41,375 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 05:31:41,376 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 05:31:41,376 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 05:31:41,377 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 05:31:41,398 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:31:41,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 190 transitions, 428 flow [2023-08-04 05:31:41,764 INFO L124 PetriNetUnfolderBase]: 282/4370 cut-off events. [2023-08-04 05:31:41,764 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:31:41,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4659 conditions, 4370 events. 282/4370 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42648 event pairs, 0 based on Foata normal form. 0/3833 useless extension candidates. Maximal degree in co-relation 3138. Up to 162 conditions per place. [2023-08-04 05:31:41,793 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 190 transitions, 428 flow [2023-08-04 05:31:41,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 187 transitions, 410 flow [2023-08-04 05:31:41,802 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:31:41,802 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 187 transitions, 410 flow [2023-08-04 05:31:41,802 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 187 transitions, 410 flow [2023-08-04 05:31:41,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 187 transitions, 410 flow [2023-08-04 05:31:42,257 INFO L124 PetriNetUnfolderBase]: 282/4357 cut-off events. [2023-08-04 05:31:42,257 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-08-04 05:31:42,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4620 conditions, 4357 events. 282/4357 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42478 event pairs, 0 based on Foata normal form. 0/3820 useless extension candidates. Maximal degree in co-relation 3108. Up to 162 conditions per place. [2023-08-04 05:31:42,326 INFO L119 LiptonReduction]: Number of co-enabled transitions 9600 [2023-08-04 05:31:45,661 INFO L134 LiptonReduction]: Checked pairs total: 25317 [2023-08-04 05:31:45,661 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-08-04 05:31:45,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:31:45,669 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;@7ef7095c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:31:45,669 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:31:45,671 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:31:45,671 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2023-08-04 05:31:45,671 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 05:31:45,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:31:45,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:31:45,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:31:45,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:31:45,672 INFO L85 PathProgramCache]: Analyzing trace with hash 375917386, now seen corresponding path program 1 times [2023-08-04 05:31:45,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:31:45,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650536191] [2023-08-04 05:31:45,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:31:45,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:31:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:31:45,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:31:45,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:31:45,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650536191] [2023-08-04 05:31:45,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650536191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:31:45,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:31:45,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:31:45,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733585595] [2023-08-04 05:31:45,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:31:45,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:31:45,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:31:45,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:31:45,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:31:45,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 333 [2023-08-04 05:31:45,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 62 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:31:45,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:31:45,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 333 [2023-08-04 05:31:45,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand