/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/weaver_popl20-min-max-dec.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 20:28:15,932 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 20:28:15,978 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 20:28:15,981 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 20:28:15,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 20:28:15,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 20:28:15,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 20:28:16,001 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 20:28:16,001 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 20:28:16,002 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 20:28:16,002 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 20:28:16,002 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 20:28:16,003 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 20:28:16,003 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 20:28:16,004 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 20:28:16,004 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 20:28:16,004 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 20:28:16,005 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 20:28:16,005 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 20:28:16,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 20:28:16,005 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 20:28:16,011 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 20:28:16,011 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 20:28:16,011 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 20:28:16,012 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 20:28:16,012 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 20:28:16,012 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 20:28:16,012 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 20:28:16,013 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 20:28:16,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 20:28:16,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:28:16,013 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 20:28:16,014 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 20:28:16,014 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 20:28:16,014 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 20:28:16,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 20:28:16,015 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 20:28:16,015 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 20:28:16,015 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 20:28:16,015 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 20:28:16,016 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 20:28:16,019 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 20:28:16,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 20:28:16,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 20:28:16,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 20:28:16,224 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 20:28:16,224 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 20:28:16,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-min-max-dec.wvr_bound2.c [2023-08-03 20:28:17,373 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 20:28:17,553 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 20:28:17,554 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-min-max-dec.wvr_bound2.c [2023-08-03 20:28:17,564 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0d3b7595/1881322e81be43f7847c5ddc4f4e34f0/FLAG00e52c4e3 [2023-08-03 20:28:17,575 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0d3b7595/1881322e81be43f7847c5ddc4f4e34f0 [2023-08-03 20:28:17,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 20:28:17,579 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 20:28:17,585 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 20:28:17,585 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 20:28:17,588 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 20:28:17,589 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:28:17" (1/1) ... [2023-08-03 20:28:17,590 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@520ed2f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:17, skipping insertion in model container [2023-08-03 20:28:17,590 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:28:17" (1/1) ... [2023-08-03 20:28:17,623 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 20:28:17,784 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-min-max-dec.wvr_bound2.c[3343,3356] [2023-08-03 20:28:17,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:28:17,802 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 20:28:17,831 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-min-max-dec.wvr_bound2.c[3343,3356] [2023-08-03 20:28:17,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:28:17,851 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:28:17,851 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:28:17,859 INFO L206 MainTranslator]: Completed translation [2023-08-03 20:28:17,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:17 WrapperNode [2023-08-03 20:28:17,861 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 20:28:17,862 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 20:28:17,862 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 20:28:17,862 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 20:28:17,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:17" (1/1) ... [2023-08-03 20:28:17,881 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:17" (1/1) ... [2023-08-03 20:28:17,905 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 203 [2023-08-03 20:28:17,905 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 20:28:17,906 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 20:28:17,906 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 20:28:17,906 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 20:28:17,913 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:17" (1/1) ... [2023-08-03 20:28:17,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:17" (1/1) ... [2023-08-03 20:28:17,920 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:17" (1/1) ... [2023-08-03 20:28:17,921 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:17" (1/1) ... [2023-08-03 20:28:17,928 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:17" (1/1) ... [2023-08-03 20:28:17,932 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:17" (1/1) ... [2023-08-03 20:28:17,934 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:17" (1/1) ... [2023-08-03 20:28:17,935 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:17" (1/1) ... [2023-08-03 20:28:17,937 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 20:28:17,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 20:28:17,938 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 20:28:17,938 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 20:28:17,939 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:17" (1/1) ... [2023-08-03 20:28:17,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:28:17,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:28:17,977 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 20:28:17,985 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 20:28:18,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 20:28:18,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 20:28:18,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 20:28:18,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 20:28:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 20:28:18,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 20:28:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 20:28:18,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 20:28:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 20:28:18,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 20:28:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-03 20:28:18,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-03 20:28:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 20:28:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 20:28:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 20:28:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 20:28:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 20:28:18,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 20:28:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 20:28:18,007 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 20:28:18,105 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 20:28:18,112 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 20:28:18,491 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 20:28:18,563 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 20:28:18,563 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-03 20:28:18,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:28:18 BoogieIcfgContainer [2023-08-03 20:28:18,565 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 20:28:18,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 20:28:18,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 20:28:18,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 20:28:18,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 08:28:17" (1/3) ... [2023-08-03 20:28:18,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d50aa36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:28:18, skipping insertion in model container [2023-08-03 20:28:18,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:17" (2/3) ... [2023-08-03 20:28:18,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d50aa36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:28:18, skipping insertion in model container [2023-08-03 20:28:18,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:28:18" (3/3) ... [2023-08-03 20:28:18,576 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-min-max-dec.wvr_bound2.c [2023-08-03 20:28:18,582 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 20:28:18,590 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 20:28:18,590 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 20:28:18,590 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 20:28:18,669 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-03 20:28:18,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 230 transitions, 528 flow [2023-08-03 20:28:18,988 INFO L124 PetriNetUnfolderBase]: 257/1473 cut-off events. [2023-08-03 20:28:18,989 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-03 20:28:19,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 1473 events. 257/1473 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9808 event pairs, 0 based on Foata normal form. 0/1234 useless extension candidates. Maximal degree in co-relation 812. Up to 33 conditions per place. [2023-08-03 20:28:19,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 230 transitions, 528 flow [2023-08-03 20:28:19,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 230 transitions, 528 flow [2023-08-03 20:28:19,025 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:28:19,040 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 230 transitions, 528 flow [2023-08-03 20:28:19,046 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 230 transitions, 528 flow [2023-08-03 20:28:19,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 230 transitions, 528 flow [2023-08-03 20:28:19,226 INFO L124 PetriNetUnfolderBase]: 257/1473 cut-off events. [2023-08-03 20:28:19,226 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-03 20:28:19,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 1473 events. 257/1473 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9808 event pairs, 0 based on Foata normal form. 0/1234 useless extension candidates. Maximal degree in co-relation 812. Up to 33 conditions per place. [2023-08-03 20:28:19,256 INFO L119 LiptonReduction]: Number of co-enabled transitions 8852 [2023-08-03 20:28:25,144 INFO L134 LiptonReduction]: Checked pairs total: 22347 [2023-08-03 20:28:25,145 INFO L136 LiptonReduction]: Total number of compositions: 188 [2023-08-03 20:28:25,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:28:25,162 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;@52a71efc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:28:25,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 20:28:25,167 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:28:25,168 INFO L124 PetriNetUnfolderBase]: 4/35 cut-off events. [2023-08-03 20:28:25,168 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 20:28:25,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:28:25,168 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-03 20:28:25,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 20:28:25,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:28:25,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1046287122, now seen corresponding path program 1 times [2023-08-03 20:28:25,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:28:25,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548228387] [2023-08-03 20:28:25,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:28:25,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:28:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:28:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 20:28:25,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:28:25,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548228387] [2023-08-03 20:28:25,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548228387] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:28:25,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:28:25,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 20:28:25,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493343376] [2023-08-03 20:28:25,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:28:25,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:28:25,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:28:25,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:28:25,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:28:25,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 418 [2023-08-03 20:28:25,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 68 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 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 20:28:25,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:28:25,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 418 [2023-08-03 20:28:25,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:28:27,232 INFO L124 PetriNetUnfolderBase]: 14199/19803 cut-off events. [2023-08-03 20:28:27,232 INFO L125 PetriNetUnfolderBase]: For 1726/1726 co-relation queries the response was YES. [2023-08-03 20:28:27,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40229 conditions, 19803 events. 14199/19803 cut-off events. For 1726/1726 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 110232 event pairs, 8953 based on Foata normal form. 0/14092 useless extension candidates. Maximal degree in co-relation 32394. Up to 18867 conditions per place. [2023-08-03 20:28:27,346 INFO L140 encePairwiseOnDemand]: 414/418 looper letters, 57 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-03 20:28:27,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 322 flow [2023-08-03 20:28:27,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:28:27,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:28:27,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2023-08-03 20:28:27,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48883572567783096 [2023-08-03 20:28:27,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2023-08-03 20:28:27,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2023-08-03 20:28:27,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:28:27,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2023-08-03 20:28:27,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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 20:28:27,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 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 20:28:27,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 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 20:28:27,382 INFO L175 Difference]: Start difference. First operand has 57 places, 68 transitions, 204 flow. Second operand 3 states and 613 transitions. [2023-08-03 20:28:27,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 322 flow [2023-08-03 20:28:27,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 322 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 20:28:27,394 INFO L231 Difference]: Finished difference. Result has 59 places, 68 transitions, 214 flow [2023-08-03 20:28:27,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=59, PETRI_TRANSITIONS=68} [2023-08-03 20:28:27,400 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2023-08-03 20:28:27,400 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 68 transitions, 214 flow [2023-08-03 20:28:27,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 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 20:28:27,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:28:27,401 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-03 20:28:27,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 20:28:27,402 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 20:28:27,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:28:27,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1058460367, now seen corresponding path program 1 times [2023-08-03 20:28:27,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:28:27,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676498720] [2023-08-03 20:28:27,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:28:27,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:28:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:28:27,468 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 20:28:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:28:27,524 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 20:28:27,524 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 20:28:27,526 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 20:28:27,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 20:28:27,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 20:28:27,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 20:28:27,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-03 20:28:27,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 20:28:27,528 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 20:28:27,530 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 20:28:27,530 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 20:28:27,568 INFO L144 ThreadInstanceAdder]: Constructed 32 joinOtherThreadTransitions. [2023-08-03 20:28:27,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 287 transitions, 718 flow [2023-08-03 20:28:29,853 INFO L124 PetriNetUnfolderBase]: 5378/20024 cut-off events. [2023-08-03 20:28:29,853 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-03 20:28:29,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24409 conditions, 20024 events. 5378/20024 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 211862 event pairs, 81 based on Foata normal form. 0/17167 useless extension candidates. Maximal degree in co-relation 12037. Up to 1024 conditions per place. [2023-08-03 20:28:29,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 287 transitions, 718 flow [2023-08-03 20:28:30,068 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 246 places, 287 transitions, 718 flow [2023-08-03 20:28:30,069 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:28:30,069 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 246 places, 287 transitions, 718 flow [2023-08-03 20:28:30,069 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 246 places, 287 transitions, 718 flow [2023-08-03 20:28:30,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 287 transitions, 718 flow [2023-08-03 20:28:32,039 INFO L124 PetriNetUnfolderBase]: 5378/20024 cut-off events. [2023-08-03 20:28:32,039 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-03 20:28:32,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24409 conditions, 20024 events. 5378/20024 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 211862 event pairs, 81 based on Foata normal form. 0/17167 useless extension candidates. Maximal degree in co-relation 12037. Up to 1024 conditions per place. [2023-08-03 20:28:32,428 INFO L119 LiptonReduction]: Number of co-enabled transitions 23164 [2023-08-03 20:28:38,695 INFO L134 LiptonReduction]: Checked pairs total: 72224 [2023-08-03 20:28:38,696 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-08-03 20:28:38,698 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:28:38,699 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;@52a71efc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:28:38,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 20:28:38,704 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:28:38,704 INFO L124 PetriNetUnfolderBase]: 4/59 cut-off events. [2023-08-03 20:28:38,704 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-03 20:28:38,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:28:38,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:28:38,705 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 20:28:38,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:28:38,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1271727263, now seen corresponding path program 1 times [2023-08-03 20:28:38,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:28:38,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756152096] [2023-08-03 20:28:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:28:38,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:28:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:28:38,783 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 20:28:38,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:28:38,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756152096] [2023-08-03 20:28:38,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756152096] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:28:38,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:28:38,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 20:28:38,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862872038] [2023-08-03 20:28:38,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:28:38,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:28:38,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:28:38,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:28:38,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:28:38,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 502 [2023-08-03 20:28:38,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 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 20:28:38,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:28:38,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 502 [2023-08-03 20:28:38,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand