/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_safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:51:37,840 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:51:37,886 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:51:37,890 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:51:37,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:51:37,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:51:37,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:51:37,917 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:51:37,918 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:51:37,921 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:51:37,921 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:51:37,922 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:51:37,922 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:51:37,923 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:51:37,923 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:51:37,924 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:51:37,924 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:51:37,924 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:51:37,924 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:51:37,924 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:51:37,925 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:51:37,925 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:51:37,925 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:51:37,925 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:51:37,925 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:51:37,926 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:51:37,926 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:51:37,927 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:51:37,927 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:51:37,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:51:37,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:51:37,928 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:51:37,928 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:51:37,928 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:51:37,929 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:51:37,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:51:37,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:51:37,929 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:51:37,929 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:51:37,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:51:37,929 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:51:37,930 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:51:38,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:51:38,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:51:38,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:51:38,167 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:51:38,169 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:51:38,170 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i [2023-08-03 18:51:39,296 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:51:39,510 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:51:39,511 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i [2023-08-03 18:51:39,524 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfa8c87c3/37fc2275741c4f4d9f08860fad12cc2c/FLAG557350a46 [2023-08-03 18:51:39,535 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfa8c87c3/37fc2275741c4f4d9f08860fad12cc2c [2023-08-03 18:51:39,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:51:39,539 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:51:39,540 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:51:39,540 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:51:39,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:51:39,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:51:39" (1/1) ... [2023-08-03 18:51:39,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d567b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:51:39, skipping insertion in model container [2023-08-03 18:51:39,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:51:39" (1/1) ... [2023-08-03 18:51:39,581 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:51:39,753 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_safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i[1039,1052] [2023-08-03 18:51:39,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:51:39,965 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:51:39,979 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_safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i[1039,1052] [2023-08-03 18:51:39,987 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 18:51:39,988 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 18:51:40,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:51:40,070 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:51:40,070 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:51:40,075 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:51:40,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:51:40 WrapperNode [2023-08-03 18:51:40,075 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:51:40,076 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:51:40,076 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:51:40,077 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:51:40,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:51:40" (1/1) ... [2023-08-03 18:51:40,097 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:51:40" (1/1) ... [2023-08-03 18:51:40,122 INFO L138 Inliner]: procedures = 176, calls = 58, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 168 [2023-08-03 18:51:40,122 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:51:40,123 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:51:40,123 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:51:40,123 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:51:40,130 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:51:40" (1/1) ... [2023-08-03 18:51:40,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:51:40" (1/1) ... [2023-08-03 18:51:40,135 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:51:40" (1/1) ... [2023-08-03 18:51:40,136 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:51:40" (1/1) ... [2023-08-03 18:51:40,149 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:51:40" (1/1) ... [2023-08-03 18:51:40,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:51:40" (1/1) ... [2023-08-03 18:51:40,155 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:51:40" (1/1) ... [2023-08-03 18:51:40,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:51:40" (1/1) ... [2023-08-03 18:51:40,160 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:51:40,160 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:51:40,160 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:51:40,161 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:51:40,161 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:51:40" (1/1) ... [2023-08-03 18:51:40,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:51:40,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:51:40,194 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 18:51:40,217 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 18:51:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:51:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:51:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:51:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:51:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:51:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:51:40,233 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:51:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:51:40,234 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:51:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 18:51:40,234 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 18:51:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:51:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:51:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:51:40,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:51:40,236 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 18:51:40,362 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:51:40,364 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:51:40,718 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:51:40,904 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:51:40,905 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 18:51:40,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:51:40 BoogieIcfgContainer [2023-08-03 18:51:40,907 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:51:40,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:51:40,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:51:40,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:51:40,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:51:39" (1/3) ... [2023-08-03 18:51:40,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a5a065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:51:40, skipping insertion in model container [2023-08-03 18:51:40,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:51:40" (2/3) ... [2023-08-03 18:51:40,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a5a065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:51:40, skipping insertion in model container [2023-08-03 18:51:40,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:51:40" (3/3) ... [2023-08-03 18:51:40,916 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i [2023-08-03 18:51:40,923 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:51:40,931 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:51:40,931 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 18:51:40,931 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:51:40,979 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:51:41,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 128 transitions, 271 flow [2023-08-03 18:51:41,169 INFO L124 PetriNetUnfolderBase]: 30/451 cut-off events. [2023-08-03 18:51:41,169 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:51:41,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 451 events. 30/451 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1971 event pairs, 0 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 268. Up to 16 conditions per place. [2023-08-03 18:51:41,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 128 transitions, 271 flow [2023-08-03 18:51:41,182 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 128 transitions, 271 flow [2023-08-03 18:51:41,185 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:51:41,197 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 128 transitions, 271 flow [2023-08-03 18:51:41,200 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 128 transitions, 271 flow [2023-08-03 18:51:41,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 128 transitions, 271 flow [2023-08-03 18:51:41,245 INFO L124 PetriNetUnfolderBase]: 30/451 cut-off events. [2023-08-03 18:51:41,246 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:51:41,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 451 events. 30/451 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1971 event pairs, 0 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 268. Up to 16 conditions per place. [2023-08-03 18:51:41,254 INFO L119 LiptonReduction]: Number of co-enabled transitions 2636 [2023-08-03 18:51:44,556 INFO L134 LiptonReduction]: Checked pairs total: 6412 [2023-08-03 18:51:44,557 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-03 18:51:44,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:51:44,574 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;@2b298ca8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:51:44,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 18:51:44,579 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:51:44,579 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2023-08-03 18:51:44,579 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:51:44,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:51:44,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 18:51:44,581 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 18:51:44,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:51:44,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1346013222, now seen corresponding path program 1 times [2023-08-03 18:51:44,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:51:44,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302158721] [2023-08-03 18:51:44,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:51:44,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:51:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:51:44,856 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 18:51:44,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:51:44,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302158721] [2023-08-03 18:51:44,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302158721] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:51:44,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:51:44,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:51:44,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614354763] [2023-08-03 18:51:44,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:51:44,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:51:44,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:51:44,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:51:44,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:51:44,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 237 [2023-08-03 18:51:44,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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 18:51:44,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:51:44,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 237 [2023-08-03 18:51:44,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:51:45,513 INFO L124 PetriNetUnfolderBase]: 3175/4889 cut-off events. [2023-08-03 18:51:45,514 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-03 18:51:45,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9737 conditions, 4889 events. 3175/4889 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 25418 event pairs, 1996 based on Foata normal form. 168/4209 useless extension candidates. Maximal degree in co-relation 9716. Up to 4748 conditions per place. [2023-08-03 18:51:45,544 INFO L140 encePairwiseOnDemand]: 233/237 looper letters, 32 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-08-03 18:51:45,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 159 flow [2023-08-03 18:51:45,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:51:45,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:51:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2023-08-03 18:51:45,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978902953586498 [2023-08-03 18:51:45,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2023-08-03 18:51:45,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2023-08-03 18:51:45,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:51:45,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2023-08-03 18:51:45,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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 18:51:45,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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 18:51:45,568 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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 18:51:45,570 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 85 flow. Second operand 3 states and 354 transitions. [2023-08-03 18:51:45,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 159 flow [2023-08-03 18:51:45,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 159 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 18:51:45,574 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 91 flow [2023-08-03 18:51:45,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-08-03 18:51:45,617 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2023-08-03 18:51:45,618 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 91 flow [2023-08-03 18:51:45,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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 18:51:45,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:51:45,618 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:51:45,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:51:45,619 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 18:51:45,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:51:45,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1330601970, now seen corresponding path program 1 times [2023-08-03 18:51:45,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:51:45,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7348615] [2023-08-03 18:51:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:51:45,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:51:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:51:45,646 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:51:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:51:45,692 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:51:45,692 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:51:45,693 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 18:51:45,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 18:51:45,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 18:51:45,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 18:51:45,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 18:51:45,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 18:51:45,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:51:45,697 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 18:51:45,699 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:51:45,699 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:51:45,734 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:51:45,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 153 transitions, 342 flow [2023-08-03 18:51:45,876 INFO L124 PetriNetUnfolderBase]: 93/1396 cut-off events. [2023-08-03 18:51:45,876 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:51:45,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1494 conditions, 1396 events. 93/1396 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9615 event pairs, 0 based on Foata normal form. 0/1219 useless extension candidates. Maximal degree in co-relation 1010. Up to 54 conditions per place. [2023-08-03 18:51:45,882 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 153 transitions, 342 flow [2023-08-03 18:51:45,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 153 transitions, 342 flow [2023-08-03 18:51:45,886 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:51:45,886 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 153 transitions, 342 flow [2023-08-03 18:51:45,886 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 153 transitions, 342 flow [2023-08-03 18:51:45,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 153 transitions, 342 flow [2023-08-03 18:51:46,016 INFO L124 PetriNetUnfolderBase]: 93/1396 cut-off events. [2023-08-03 18:51:46,017 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:51:46,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1494 conditions, 1396 events. 93/1396 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9615 event pairs, 0 based on Foata normal form. 0/1219 useless extension candidates. Maximal degree in co-relation 1010. Up to 54 conditions per place. [2023-08-03 18:51:46,047 INFO L119 LiptonReduction]: Number of co-enabled transitions 6364 [2023-08-03 18:51:49,280 INFO L134 LiptonReduction]: Checked pairs total: 18618 [2023-08-03 18:51:49,280 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-03 18:51:49,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:51:49,283 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;@2b298ca8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:51:49,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 18:51:49,287 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:51:49,288 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2023-08-03 18:51:49,288 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 18:51:49,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:51:49,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 18:51:49,288 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 18:51:49,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:51:49,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1425942419, now seen corresponding path program 1 times [2023-08-03 18:51:49,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:51:49,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992987998] [2023-08-03 18:51:49,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:51:49,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:51:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:51:49,333 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 18:51:49,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:51:49,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992987998] [2023-08-03 18:51:49,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992987998] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:51:49,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:51:49,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:51:49,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144969067] [2023-08-03 18:51:49,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:51:49,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:51:49,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:51:49,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:51:49,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:51:49,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 269 [2023-08-03 18:51:49,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 18:51:49,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:51:49,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 269 [2023-08-03 18:51:49,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand