/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_mix027_tso_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:21:14,962 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:21:15,014 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:21:15,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:21:15,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:21:15,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:21:15,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:21:15,034 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:21:15,035 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:21:15,038 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:21:15,038 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:21:15,038 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:21:15,039 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:21:15,040 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:21:15,040 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:21:15,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:21:15,040 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:21:15,040 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:21:15,040 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:21:15,041 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:21:15,041 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:21:15,041 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:21:15,041 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:21:15,041 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:21:15,041 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:21:15,042 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:21:15,042 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:21:15,043 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:21:15,043 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:21:15,043 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:21:15,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:21:15,044 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:21:15,044 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:21:15,044 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:21:15,044 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:21:15,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:21:15,045 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:21:15,045 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:21:15,045 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:21:15,045 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:21:15,045 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:21:15,045 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:21:15,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:21:15,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:21:15,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:21:15,222 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:21:15,222 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:21:15,226 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix027_tso_bound2.i [2023-08-03 17:21:16,085 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:21:16,277 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:21:16,278 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix027_tso_bound2.i [2023-08-03 17:21:16,294 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68e052fea/a07c3f52da204a27adf9557a8caa5471/FLAG2b58659e4 [2023-08-03 17:21:16,304 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68e052fea/a07c3f52da204a27adf9557a8caa5471 [2023-08-03 17:21:16,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:21:16,307 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:21:16,308 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:21:16,308 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:21:16,311 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:21:16,311 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:21:16" (1/1) ... [2023-08-03 17:21:16,312 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ddc3901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:21:16, skipping insertion in model container [2023-08-03 17:21:16,312 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:21:16" (1/1) ... [2023-08-03 17:21:16,339 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:21:16,437 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_mix027_tso_bound2.i[944,957] [2023-08-03 17:21:16,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:21:16,619 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:21:16,627 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_mix027_tso_bound2.i[944,957] [2023-08-03 17:21:16,643 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:21:16,644 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:21:16,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:21:16,696 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:21:16,696 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:21:16,700 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:21:16,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:21:16 WrapperNode [2023-08-03 17:21:16,701 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:21:16,701 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:21:16,701 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:21:16,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:21:16,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:21:16" (1/1) ... [2023-08-03 17:21:16,732 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:21:16" (1/1) ... [2023-08-03 17:21:16,759 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 193 [2023-08-03 17:21:16,759 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:21:16,760 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:21:16,760 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:21:16,760 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:21:16,766 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:21:16" (1/1) ... [2023-08-03 17:21:16,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:21:16" (1/1) ... [2023-08-03 17:21:16,769 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:21:16" (1/1) ... [2023-08-03 17:21:16,769 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:21:16" (1/1) ... [2023-08-03 17:21:16,776 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:21:16" (1/1) ... [2023-08-03 17:21:16,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:21:16" (1/1) ... [2023-08-03 17:21:16,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:21:16" (1/1) ... [2023-08-03 17:21:16,791 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:21:16" (1/1) ... [2023-08-03 17:21:16,793 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:21:16,794 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:21:16,794 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:21:16,794 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:21:16,794 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:21:16" (1/1) ... [2023-08-03 17:21:16,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:21:16,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:21:16,818 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 17:21:16,829 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 17:21:16,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:21:16,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:21:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:21:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:21:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:21:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:21:16,840 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:21:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:21:16,840 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:21:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:21:16,840 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:21:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-03 17:21:16,840 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-03 17:21:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:21:16,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:21:16,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:21:16,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:21:16,842 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 17:21:16,947 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:21:16,948 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:21:17,185 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:21:17,299 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:21:17,299 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 17:21:17,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:21:17 BoogieIcfgContainer [2023-08-03 17:21:17,301 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:21:17,302 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:21:17,302 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:21:17,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:21:17,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:21:16" (1/3) ... [2023-08-03 17:21:17,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d854a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:21:17, skipping insertion in model container [2023-08-03 17:21:17,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:21:16" (2/3) ... [2023-08-03 17:21:17,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d854a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:21:17, skipping insertion in model container [2023-08-03 17:21:17,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:21:17" (3/3) ... [2023-08-03 17:21:17,306 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix027_tso_bound2.i [2023-08-03 17:21:17,311 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:21:17,316 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:21:17,316 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:21:17,316 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:21:17,356 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:21:17,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-03 17:21:17,550 INFO L124 PetriNetUnfolderBase]: 62/933 cut-off events. [2023-08-03 17:21:17,550 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:21:17,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 933 events. 62/933 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5779 event pairs, 0 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 554. Up to 32 conditions per place. [2023-08-03 17:21:17,556 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 158 transitions, 336 flow [2023-08-03 17:21:17,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 158 transitions, 336 flow [2023-08-03 17:21:17,565 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:21:17,582 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 158 transitions, 336 flow [2023-08-03 17:21:17,584 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 158 transitions, 336 flow [2023-08-03 17:21:17,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-03 17:21:17,665 INFO L124 PetriNetUnfolderBase]: 62/933 cut-off events. [2023-08-03 17:21:17,665 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:21:17,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 933 events. 62/933 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5779 event pairs, 0 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 554. Up to 32 conditions per place. [2023-08-03 17:21:17,696 INFO L119 LiptonReduction]: Number of co-enabled transitions 4454 [2023-08-03 17:21:20,935 INFO L134 LiptonReduction]: Checked pairs total: 12411 [2023-08-03 17:21:20,935 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-08-03 17:21:20,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:21:20,948 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;@58f0d223, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:21:20,948 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 17:21:20,951 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:21:20,951 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-03 17:21:20,951 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:21:20,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:21:20,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:21:20,951 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 17:21:20,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:21:20,954 INFO L85 PathProgramCache]: Analyzing trace with hash 634757581, now seen corresponding path program 1 times [2023-08-03 17:21:20,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:21:20,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149205505] [2023-08-03 17:21:20,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:21:20,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:21:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:21:21,125 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 17:21:21,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:21:21,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149205505] [2023-08-03 17:21:21,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149205505] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:21:21,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:21:21,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:21:21,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599602496] [2023-08-03 17:21:21,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:21:21,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:21:21,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:21:21,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:21:21,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:21:21,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 286 [2023-08-03 17:21:21,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:21:21,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:21:21,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 286 [2023-08-03 17:21:21,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:21:22,752 INFO L124 PetriNetUnfolderBase]: 14237/20446 cut-off events. [2023-08-03 17:21:22,752 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2023-08-03 17:21:22,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40991 conditions, 20446 events. 14237/20446 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 129923 event pairs, 12812 based on Foata normal form. 600/17718 useless extension candidates. Maximal degree in co-relation 40973. Up to 19930 conditions per place. [2023-08-03 17:21:22,936 INFO L140 encePairwiseOnDemand]: 282/286 looper letters, 37 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-03 17:21:22,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 48 transitions, 194 flow [2023-08-03 17:21:22,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:21:22,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:21:22,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-03 17:21:22,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5198135198135199 [2023-08-03 17:21:22,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-03 17:21:22,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-03 17:21:22,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:21:22,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-03 17:21:22,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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 17:21:22,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 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 17:21:22,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 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 17:21:22,956 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 110 flow. Second operand 3 states and 446 transitions. [2023-08-03 17:21:22,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 48 transitions, 194 flow [2023-08-03 17:21:22,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 48 transitions, 194 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:21:22,959 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 116 flow [2023-08-03 17:21:22,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2023-08-03 17:21:22,963 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-08-03 17:21:22,963 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 116 flow [2023-08-03 17:21:22,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:21:22,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:21:22,964 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:21:22,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:21:22,964 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 17:21:22,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:21:22,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1803855446, now seen corresponding path program 1 times [2023-08-03 17:21:22,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:21:22,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862364511] [2023-08-03 17:21:22,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:21:22,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:21:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:21:22,996 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:21:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:21:23,017 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:21:23,018 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:21:23,019 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-08-03 17:21:23,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 17:21:23,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 17:21:23,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-03 17:21:23,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-03 17:21:23,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-03 17:21:23,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 17:21:23,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:21:23,021 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:21:23,022 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:21:23,022 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:21:23,040 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:21:23,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 192 transitions, 432 flow [2023-08-03 17:21:23,346 INFO L124 PetriNetUnfolderBase]: 282/4328 cut-off events. [2023-08-03 17:21:23,346 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 17:21:23,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4617 conditions, 4328 events. 282/4328 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 42042 event pairs, 0 based on Foata normal form. 0/3839 useless extension candidates. Maximal degree in co-relation 3123. Up to 162 conditions per place. [2023-08-03 17:21:23,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 192 transitions, 432 flow [2023-08-03 17:21:23,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 192 transitions, 432 flow [2023-08-03 17:21:23,379 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:21:23,379 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 192 transitions, 432 flow [2023-08-03 17:21:23,379 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 192 transitions, 432 flow [2023-08-03 17:21:23,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 192 transitions, 432 flow [2023-08-03 17:21:23,736 INFO L124 PetriNetUnfolderBase]: 282/4328 cut-off events. [2023-08-03 17:21:23,736 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 17:21:23,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4617 conditions, 4328 events. 282/4328 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 42042 event pairs, 0 based on Foata normal form. 0/3839 useless extension candidates. Maximal degree in co-relation 3123. Up to 162 conditions per place. [2023-08-03 17:21:23,805 INFO L119 LiptonReduction]: Number of co-enabled transitions 10944 [2023-08-03 17:21:27,160 INFO L134 LiptonReduction]: Checked pairs total: 36880 [2023-08-03 17:21:27,160 INFO L136 LiptonReduction]: Total number of compositions: 137 [2023-08-03 17:21:27,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:21:27,162 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;@58f0d223, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:21:27,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-03 17:21:27,164 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:21:27,164 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-03 17:21:27,164 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:21:27,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:21:27,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:21:27,165 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 17:21:27,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:21:27,165 INFO L85 PathProgramCache]: Analyzing trace with hash 981261194, now seen corresponding path program 1 times [2023-08-03 17:21:27,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:21:27,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471012210] [2023-08-03 17:21:27,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:21:27,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:21:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:21:27,202 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 17:21:27,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:21:27,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471012210] [2023-08-03 17:21:27,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471012210] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:21:27,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:21:27,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:21:27,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340193691] [2023-08-03 17:21:27,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:21:27,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:21:27,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:21:27,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:21:27,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:21:27,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 329 [2023-08-03 17:21:27,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 71 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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 17:21:27,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:21:27,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 329 [2023-08-03 17:21:27,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand