/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_safe035_power_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:53:19,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:53:20,056 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:53:20,061 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:53:20,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:53:20,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:53:20,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:53:20,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:53:20,090 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:53:20,094 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:53:20,094 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:53:20,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:53:20,095 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:53:20,096 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:53:20,096 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:53:20,097 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:53:20,097 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:53:20,097 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:53:20,097 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:53:20,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:53:20,098 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:53:20,098 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:53:20,098 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:53:20,098 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:53:20,099 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:53:20,100 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:53:20,100 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:53:20,101 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:53:20,101 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:53:20,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:53:20,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:53:20,102 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:53:20,102 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:53:20,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:53:20,103 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:53:20,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:53:20,103 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:53:20,103 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:53:20,103 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:53:20,103 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:53:20,104 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:53:20,104 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:53:20,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:53:20,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:53:20,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:53:20,338 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:53:20,338 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:53:20,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe035_power_bound2.i [2023-08-03 18:53:21,558 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:53:21,801 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:53:21,801 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe035_power_bound2.i [2023-08-03 18:53:21,821 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1145e50b0/7ff6eefbfc614c348d839e7dc9bff6ba/FLAG9be9b3f1b [2023-08-03 18:53:21,832 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1145e50b0/7ff6eefbfc614c348d839e7dc9bff6ba [2023-08-03 18:53:21,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:53:21,836 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:53:21,837 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:53:21,837 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:53:21,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:53:21,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:53:21" (1/1) ... [2023-08-03 18:53:21,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b9ba23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:53:21, skipping insertion in model container [2023-08-03 18:53:21,846 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:53:21" (1/1) ... [2023-08-03 18:53:21,916 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:53:22,045 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_safe035_power_bound2.i[947,960] [2023-08-03 18:53:22,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:53:22,280 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:53:22,294 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_safe035_power_bound2.i[947,960] [2023-08-03 18:53:22,311 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:53:22,313 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:53:22,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:53:22,390 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:53:22,390 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:53:22,396 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:53:22,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:53:22 WrapperNode [2023-08-03 18:53:22,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:53:22,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:53:22,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:53:22,398 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:53:22,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:53:22" (1/1) ... [2023-08-03 18:53:22,431 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:53:22" (1/1) ... [2023-08-03 18:53:22,470 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 197 [2023-08-03 18:53:22,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:53:22,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:53:22,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:53:22,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:53:22,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:53:22" (1/1) ... [2023-08-03 18:53:22,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:53:22" (1/1) ... [2023-08-03 18:53:22,493 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:53:22" (1/1) ... [2023-08-03 18:53:22,493 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:53:22" (1/1) ... [2023-08-03 18:53:22,518 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:53:22" (1/1) ... [2023-08-03 18:53:22,521 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:53:22" (1/1) ... [2023-08-03 18:53:22,532 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:53:22" (1/1) ... [2023-08-03 18:53:22,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:53:22" (1/1) ... [2023-08-03 18:53:22,537 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:53:22,538 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:53:22,538 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:53:22,538 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:53:22,539 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:53:22" (1/1) ... [2023-08-03 18:53:22,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:53:22,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:53:22,574 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 18:53:22,575 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 18:53:22,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:53:22,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:53:22,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:53:22,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:53:22,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:53:22,607 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:53:22,607 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:53:22,607 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:53:22,607 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:53:22,608 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 18:53:22,608 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 18:53:22,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:53:22,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:53:22,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:53:22,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:53:22,610 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 18:53:22,717 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:53:22,718 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:53:23,121 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:53:23,280 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:53:23,281 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 18:53:23,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:53:23 BoogieIcfgContainer [2023-08-03 18:53:23,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:53:23,287 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:53:23,287 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:53:23,290 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:53:23,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:53:21" (1/3) ... [2023-08-03 18:53:23,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dfda362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:53:23, skipping insertion in model container [2023-08-03 18:53:23,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:53:22" (2/3) ... [2023-08-03 18:53:23,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dfda362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:53:23, skipping insertion in model container [2023-08-03 18:53:23,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:53:23" (3/3) ... [2023-08-03 18:53:23,292 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe035_power_bound2.i [2023-08-03 18:53:23,298 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:53:23,306 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:53:23,306 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 18:53:23,306 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:53:23,365 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:53:23,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 133 transitions, 281 flow [2023-08-03 18:53:23,574 INFO L124 PetriNetUnfolderBase]: 30/459 cut-off events. [2023-08-03 18:53:23,574 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:53:23,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 459 events. 30/459 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2051 event pairs, 0 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 272. Up to 16 conditions per place. [2023-08-03 18:53:23,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 133 transitions, 281 flow [2023-08-03 18:53:23,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 133 transitions, 281 flow [2023-08-03 18:53:23,595 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:53:23,619 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 133 transitions, 281 flow [2023-08-03 18:53:23,622 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 133 transitions, 281 flow [2023-08-03 18:53:23,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 133 transitions, 281 flow [2023-08-03 18:53:23,689 INFO L124 PetriNetUnfolderBase]: 30/459 cut-off events. [2023-08-03 18:53:23,690 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:53:23,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 459 events. 30/459 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2051 event pairs, 0 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 272. Up to 16 conditions per place. [2023-08-03 18:53:23,700 INFO L119 LiptonReduction]: Number of co-enabled transitions 3086 [2023-08-03 18:53:27,676 INFO L134 LiptonReduction]: Checked pairs total: 8564 [2023-08-03 18:53:27,676 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-03 18:53:27,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:53:27,693 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;@548ad968, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:53:27,693 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 18:53:27,697 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:53:27,697 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-03 18:53:27,697 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:53:27,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:53:27,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 18:53:27,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 18:53:27,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:53:27,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1564252602, now seen corresponding path program 1 times [2023-08-03 18:53:27,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:53:27,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715693012] [2023-08-03 18:53:27,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:53:27,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:53:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:53:27,960 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 18:53:27,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:53:27,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715693012] [2023-08-03 18:53:27,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715693012] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:53:27,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:53:27,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:53:27,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013019667] [2023-08-03 18:53:27,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:53:27,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:53:27,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:53:27,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:53:27,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:53:28,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 246 [2023-08-03 18:53:28,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 18:53:28,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:53:28,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 246 [2023-08-03 18:53:28,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:53:29,017 INFO L124 PetriNetUnfolderBase]: 4313/6416 cut-off events. [2023-08-03 18:53:29,018 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-03 18:53:29,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12918 conditions, 6416 events. 4313/6416 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 33452 event pairs, 2685 based on Foata normal form. 0/5571 useless extension candidates. Maximal degree in co-relation 12895. Up to 6349 conditions per place. [2023-08-03 18:53:29,058 INFO L140 encePairwiseOnDemand]: 243/246 looper letters, 34 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-03 18:53:29,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 167 flow [2023-08-03 18:53:29,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:53:29,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:53:29,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2023-08-03 18:53:29,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489159891598916 [2023-08-03 18:53:29,079 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 361 transitions. [2023-08-03 18:53:29,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 361 transitions. [2023-08-03 18:53:29,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:53:29,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 361 transitions. [2023-08-03 18:53:29,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 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 18:53:29,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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 18:53:29,094 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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 18:53:29,096 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 85 flow. Second operand 3 states and 361 transitions. [2023-08-03 18:53:29,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 167 flow [2023-08-03 18:53:29,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 167 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 18:53:29,101 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 93 flow [2023-08-03 18:53:29,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2023-08-03 18:53:29,105 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-08-03 18:53:29,106 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 93 flow [2023-08-03 18:53:29,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 18:53:29,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:53:29,106 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:53:29,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:53:29,107 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 18:53:29,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:53:29,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1552822288, now seen corresponding path program 1 times [2023-08-03 18:53:29,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:53:29,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379249776] [2023-08-03 18:53:29,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:53:29,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:53:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:53:29,154 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:53:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:53:29,199 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:53:29,199 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:53:29,201 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 18:53:29,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 18:53:29,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 18:53:29,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 18:53:29,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 18:53:29,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 18:53:29,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:53:29,204 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 18:53:29,207 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:53:29,207 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:53:29,269 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:53:29,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 161 transitions, 358 flow [2023-08-03 18:53:29,456 INFO L124 PetriNetUnfolderBase]: 93/1420 cut-off events. [2023-08-03 18:53:29,456 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:53:29,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1518 conditions, 1420 events. 93/1420 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9922 event pairs, 0 based on Foata normal form. 0/1243 useless extension candidates. Maximal degree in co-relation 1025. Up to 54 conditions per place. [2023-08-03 18:53:29,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 161 transitions, 358 flow [2023-08-03 18:53:29,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 161 transitions, 358 flow [2023-08-03 18:53:29,470 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:53:29,470 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 161 transitions, 358 flow [2023-08-03 18:53:29,470 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 161 transitions, 358 flow [2023-08-03 18:53:29,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 161 transitions, 358 flow [2023-08-03 18:53:29,633 INFO L124 PetriNetUnfolderBase]: 93/1420 cut-off events. [2023-08-03 18:53:29,634 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:53:29,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1518 conditions, 1420 events. 93/1420 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9922 event pairs, 0 based on Foata normal form. 0/1243 useless extension candidates. Maximal degree in co-relation 1025. Up to 54 conditions per place. [2023-08-03 18:53:29,669 INFO L119 LiptonReduction]: Number of co-enabled transitions 7568 [2023-08-03 18:53:33,740 INFO L134 LiptonReduction]: Checked pairs total: 25520 [2023-08-03 18:53:33,740 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-03 18:53:33,746 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:53:33,747 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;@548ad968, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:53:33,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 18:53:33,753 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:53:33,756 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2023-08-03 18:53:33,756 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:53:33,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:53:33,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 18:53:33,757 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:53:33,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:53:33,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1125509548, now seen corresponding path program 1 times [2023-08-03 18:53:33,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:53:33,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171318092] [2023-08-03 18:53:33,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:53:33,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:53:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:53:33,826 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 18:53:33,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:53:33,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171318092] [2023-08-03 18:53:33,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171318092] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:53:33,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:53:33,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:53:33,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117993513] [2023-08-03 18:53:33,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:53:33,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:53:33,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:53:33,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:53:33,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:53:33,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 279 [2023-08-03 18:53:33,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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 18:53:33,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:53:33,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 279 [2023-08-03 18:53:33,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand