/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/increased_bounds/pthread-wmm_mix005_tso.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:00:58,843 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:00:58,900 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:00:58,905 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:00:58,905 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:00:58,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:00:58,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:00:58,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:00:58,927 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:00:58,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:00:58,930 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:00:58,930 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:00:58,931 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:00:58,932 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:00:58,932 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:00:58,932 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:00:58,932 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:00:58,932 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:00:58,932 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:00:58,933 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:00:58,933 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:00:58,933 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:00:58,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:00:58,933 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:00:58,934 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:00:58,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:00:58,934 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:00:58,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:00:58,935 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:00:58,935 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:00:58,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:00:58,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:00:58,936 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:00:58,936 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:00:58,936 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:00:58,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:00:58,936 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:00:58,936 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:00:58,936 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:00:58,937 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:00:58,937 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:00:58,937 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:00:59,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:00:59,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:00:59,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:00:59,127 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:00:59,127 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:00:59,128 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix005_tso.oepc_bound2.i [2023-08-03 17:01:00,006 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:01:00,246 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:01:00,247 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix005_tso.oepc_bound2.i [2023-08-03 17:01:00,262 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6baefdcde/037589baf8aa472388ea7fd5e93742f1/FLAGd711c4d6e [2023-08-03 17:01:00,275 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6baefdcde/037589baf8aa472388ea7fd5e93742f1 [2023-08-03 17:01:00,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:01:00,277 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:01:00,280 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:01:00,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:01:00,282 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:01:00,282 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:01:00" (1/1) ... [2023-08-03 17:01:00,283 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16bf17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:00, skipping insertion in model container [2023-08-03 17:01:00,283 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:01:00" (1/1) ... [2023-08-03 17:01:00,324 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:01:00,415 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_tso.oepc_bound2.i[949,962] [2023-08-03 17:01:00,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:01:00,567 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:01:00,576 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_tso.oepc_bound2.i[949,962] [2023-08-03 17:01:00,595 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:01:00,596 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:01:00,628 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:01:00,651 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:01:00,651 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:01:00,655 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:01:00,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:00 WrapperNode [2023-08-03 17:01:00,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:01:00,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:01:00,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:01:00,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:01:00,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:00" (1/1) ... [2023-08-03 17:01:00,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:00" (1/1) ... [2023-08-03 17:01:00,716 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 195 [2023-08-03 17:01:00,716 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:01:00,717 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:01:00,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:01:00,717 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:01:00,730 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:00" (1/1) ... [2023-08-03 17:01:00,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:00" (1/1) ... [2023-08-03 17:01:00,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:00" (1/1) ... [2023-08-03 17:01:00,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:00" (1/1) ... [2023-08-03 17:01:00,740 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:00" (1/1) ... [2023-08-03 17:01:00,746 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:00" (1/1) ... [2023-08-03 17:01:00,747 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:00" (1/1) ... [2023-08-03 17:01:00,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:00" (1/1) ... [2023-08-03 17:01:00,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:01:00,751 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:01:00,751 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:01:00,751 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:01:00,752 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:00" (1/1) ... [2023-08-03 17:01:00,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:01:00,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:01:00,779 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 17:01:00,787 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 17:01:00,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:01:00,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:01:00,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:01:00,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:01:00,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:01:00,800 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:01:00,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:01:00,800 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:01:00,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:01:00,800 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:01:00,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:01:00,800 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-03 17:01:00,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-03 17:01:00,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:01:00,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:01:00,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:01:00,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:01:00,802 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 17:01:00,900 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:01:00,901 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:01:01,218 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:01:01,279 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:01:01,279 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 17:01:01,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:01:01 BoogieIcfgContainer [2023-08-03 17:01:01,281 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:01:01,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:01:01,282 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:01:01,284 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:01:01,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:01:00" (1/3) ... [2023-08-03 17:01:01,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd7d247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:01:01, skipping insertion in model container [2023-08-03 17:01:01,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:00" (2/3) ... [2023-08-03 17:01:01,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd7d247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:01:01, skipping insertion in model container [2023-08-03 17:01:01,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:01:01" (3/3) ... [2023-08-03 17:01:01,286 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix005_tso.oepc_bound2.i [2023-08-03 17:01:01,290 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:01:01,296 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:01:01,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:01:01,296 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:01:01,330 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:01:01,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 161 transitions, 342 flow [2023-08-03 17:01:01,473 INFO L124 PetriNetUnfolderBase]: 62/939 cut-off events. [2023-08-03 17:01:01,473 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:01:01,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 939 events. 62/939 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5824 event pairs, 0 based on Foata normal form. 0/829 useless extension candidates. Maximal degree in co-relation 560. Up to 32 conditions per place. [2023-08-03 17:01:01,481 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 161 transitions, 342 flow [2023-08-03 17:01:01,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 161 transitions, 342 flow [2023-08-03 17:01:01,490 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:01:01,500 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 161 transitions, 342 flow [2023-08-03 17:01:01,503 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 161 transitions, 342 flow [2023-08-03 17:01:01,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 161 transitions, 342 flow [2023-08-03 17:01:01,593 INFO L124 PetriNetUnfolderBase]: 62/939 cut-off events. [2023-08-03 17:01:01,593 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:01:01,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 939 events. 62/939 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5824 event pairs, 0 based on Foata normal form. 0/829 useless extension candidates. Maximal degree in co-relation 560. Up to 32 conditions per place. [2023-08-03 17:01:01,608 INFO L119 LiptonReduction]: Number of co-enabled transitions 4612 [2023-08-03 17:01:04,937 INFO L134 LiptonReduction]: Checked pairs total: 13370 [2023-08-03 17:01:04,937 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-03 17:01:04,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:01:04,949 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;@712f3a89, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:01:04,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 17:01:04,952 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:01:04,952 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-03 17:01:04,953 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:01:04,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:01:04,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:01:04,954 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:01:04,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:01:04,957 INFO L85 PathProgramCache]: Analyzing trace with hash 643309766, now seen corresponding path program 1 times [2023-08-03 17:01:04,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:01:04,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645403726] [2023-08-03 17:01:04,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:01:04,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:01:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:01:05,141 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 17:01:05,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:01:05,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645403726] [2023-08-03 17:01:05,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645403726] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:01:05,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:01:05,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:01:05,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79878145] [2023-08-03 17:01:05,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:01:05,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:01:05,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:01:05,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:01:05,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:01:05,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 291 [2023-08-03 17:01:05,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 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 17:01:05,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:01:05,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 291 [2023-08-03 17:01:05,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:01:06,849 INFO L124 PetriNetUnfolderBase]: 14237/21548 cut-off events. [2023-08-03 17:01:06,849 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-08-03 17:01:06,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41895 conditions, 21548 events. 14237/21548 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 887. Compared 147538 event pairs, 9968 based on Foata normal form. 600/18496 useless extension candidates. Maximal degree in co-relation 41873. Up to 19930 conditions per place. [2023-08-03 17:01:06,938 INFO L140 encePairwiseOnDemand]: 287/291 looper letters, 37 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-03 17:01:06,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 196 flow [2023-08-03 17:01:06,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:01:06,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:01:06,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-08-03 17:01:06,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5211912943871707 [2023-08-03 17:01:06,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-08-03 17:01:06,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-08-03 17:01:06,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:01:06,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-08-03 17:01:06,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 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 17:01:06,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 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 17:01:06,964 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 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 17:01:06,965 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 112 flow. Second operand 3 states and 455 transitions. [2023-08-03 17:01:06,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 196 flow [2023-08-03 17:01:06,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 49 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:01:06,969 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 118 flow [2023-08-03 17:01:06,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2023-08-03 17:01:06,972 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-03 17:01:06,972 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 118 flow [2023-08-03 17:01:06,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 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 17:01:06,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:01:06,973 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:01:06,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:01:06,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:01:06,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:01:06,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1543137966, now seen corresponding path program 1 times [2023-08-03 17:01:06,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:01:06,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752708519] [2023-08-03 17:01:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:01:06,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:01:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:01:07,008 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:01:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:01:07,045 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:01:07,045 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:01:07,046 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-08-03 17:01:07,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 17:01:07,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 17:01:07,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-03 17:01:07,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-03 17:01:07,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-03 17:01:07,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 17:01:07,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:01:07,048 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:01:07,053 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:01:07,053 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:01:07,075 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:01:07,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 196 transitions, 440 flow [2023-08-03 17:01:07,416 INFO L124 PetriNetUnfolderBase]: 282/4348 cut-off events. [2023-08-03 17:01:07,417 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 17:01:07,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4637 conditions, 4348 events. 282/4348 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42379 event pairs, 0 based on Foata normal form. 0/3859 useless extension candidates. Maximal degree in co-relation 3143. Up to 162 conditions per place. [2023-08-03 17:01:07,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 196 transitions, 440 flow [2023-08-03 17:01:07,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 196 transitions, 440 flow [2023-08-03 17:01:07,447 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:01:07,448 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 196 transitions, 440 flow [2023-08-03 17:01:07,448 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 196 transitions, 440 flow [2023-08-03 17:01:07,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 196 transitions, 440 flow [2023-08-03 17:01:07,866 INFO L124 PetriNetUnfolderBase]: 282/4348 cut-off events. [2023-08-03 17:01:07,866 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 17:01:07,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4637 conditions, 4348 events. 282/4348 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42379 event pairs, 0 based on Foata normal form. 0/3859 useless extension candidates. Maximal degree in co-relation 3143. Up to 162 conditions per place. [2023-08-03 17:01:07,949 INFO L119 LiptonReduction]: Number of co-enabled transitions 11388 [2023-08-03 17:01:11,538 INFO L134 LiptonReduction]: Checked pairs total: 39237 [2023-08-03 17:01:11,540 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-03 17:01:11,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:01:11,558 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;@712f3a89, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:01:11,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-03 17:01:11,560 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:01:11,560 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-08-03 17:01:11,560 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:01:11,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:01:11,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:01:11,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-08-03 17:01:11,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:01:11,561 INFO L85 PathProgramCache]: Analyzing trace with hash 996405111, now seen corresponding path program 1 times [2023-08-03 17:01:11,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:01:11,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226581732] [2023-08-03 17:01:11,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:01:11,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:01:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:01:11,627 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 17:01:11,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:01:11,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226581732] [2023-08-03 17:01:11,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226581732] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:01:11,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:01:11,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:01:11,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623607174] [2023-08-03 17:01:11,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:01:11,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:01:11,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:01:11,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:01:11,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:01:11,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 335 [2023-08-03 17:01:11,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 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 17:01:11,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:01:11,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 335 [2023-08-03 17:01:11,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand