/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-bad-dot-product-alt.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 20:20:07,938 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 20:20:08,017 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 20:20:08,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 20:20:08,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 20:20:08,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 20:20:08,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 20:20:08,056 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 20:20:08,057 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 20:20:08,060 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 20:20:08,061 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 20:20:08,061 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 20:20:08,062 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 20:20:08,064 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 20:20:08,064 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 20:20:08,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 20:20:08,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 20:20:08,065 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 20:20:08,065 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 20:20:08,065 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 20:20:08,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 20:20:08,066 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 20:20:08,066 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 20:20:08,066 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 20:20:08,067 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 20:20:08,067 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 20:20:08,068 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 20:20:08,068 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 20:20:08,068 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 20:20:08,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 20:20:08,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:20:08,070 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 20:20:08,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 20:20:08,070 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 20:20:08,070 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 20:20:08,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 20:20:08,071 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 20:20:08,071 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 20:20:08,071 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 20:20:08,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 20:20:08,071 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 20:20:08,072 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 20:20:08,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 20:20:08,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 20:20:08,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 20:20:08,362 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 20:20:08,362 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 20:20:08,363 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-bad-dot-product-alt.wvr_bound2.c [2023-08-03 20:20:09,462 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 20:20:09,614 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 20:20:09,615 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-bad-dot-product-alt.wvr_bound2.c [2023-08-03 20:20:09,622 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e85fbd67/1ce8043b889443b49e643ee8f1dd4a1c/FLAGd4ea3bed5 [2023-08-03 20:20:09,636 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e85fbd67/1ce8043b889443b49e643ee8f1dd4a1c [2023-08-03 20:20:09,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 20:20:09,639 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 20:20:09,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 20:20:09,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 20:20:09,643 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 20:20:09,644 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:20:09" (1/1) ... [2023-08-03 20:20:09,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef09ff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:20:09, skipping insertion in model container [2023-08-03 20:20:09,645 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:20:09" (1/1) ... [2023-08-03 20:20:09,666 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 20:20:09,869 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-bad-dot-product-alt.wvr_bound2.c[3425,3438] [2023-08-03 20:20:09,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:20:09,898 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 20:20:09,949 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-bad-dot-product-alt.wvr_bound2.c[3425,3438] [2023-08-03 20:20:09,952 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:20:09,960 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:20:09,960 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:20:09,968 INFO L206 MainTranslator]: Completed translation [2023-08-03 20:20:09,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:20:09 WrapperNode [2023-08-03 20:20:09,969 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 20:20:09,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 20:20:09,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 20:20:09,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 20:20:09,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:20:09" (1/1) ... [2023-08-03 20:20:09,999 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:20:09" (1/1) ... [2023-08-03 20:20:10,043 INFO L138 Inliner]: procedures = 28, calls = 74, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 417 [2023-08-03 20:20:10,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 20:20:10,044 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 20:20:10,045 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 20:20:10,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 20:20:10,056 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:20:09" (1/1) ... [2023-08-03 20:20:10,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:20:09" (1/1) ... [2023-08-03 20:20:10,071 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:20:09" (1/1) ... [2023-08-03 20:20:10,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:20:09" (1/1) ... [2023-08-03 20:20:10,081 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:20:09" (1/1) ... [2023-08-03 20:20:10,102 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:20:09" (1/1) ... [2023-08-03 20:20:10,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:20:09" (1/1) ... [2023-08-03 20:20:10,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:20:09" (1/1) ... [2023-08-03 20:20:10,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 20:20:10,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 20:20:10,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 20:20:10,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 20:20:10,111 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:20:09" (1/1) ... [2023-08-03 20:20:10,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:20:10,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:20:10,150 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 20:20:10,152 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 20:20:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 20:20:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-03 20:20:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 20:20:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 20:20:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 20:20:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-03 20:20:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 20:20:10,186 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 20:20:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 20:20:10,188 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 20:20:10,188 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 20:20:10,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 20:20:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 20:20:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 20:20:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 20:20:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 20:20:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 20:20:10,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 20:20:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 20:20:10,192 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 20:20:10,305 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 20:20:10,307 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 20:20:10,835 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 20:20:10,967 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 20:20:10,967 INFO L302 CfgBuilder]: Removed 13 assume(true) statements. [2023-08-03 20:20:10,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:20:10 BoogieIcfgContainer [2023-08-03 20:20:10,970 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 20:20:10,972 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 20:20:10,972 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 20:20:10,975 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 20:20:10,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 08:20:09" (1/3) ... [2023-08-03 20:20:10,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a36d5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:20:10, skipping insertion in model container [2023-08-03 20:20:10,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:20:09" (2/3) ... [2023-08-03 20:20:10,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a36d5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:20:10, skipping insertion in model container [2023-08-03 20:20:10,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:20:10" (3/3) ... [2023-08-03 20:20:10,977 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-bad-dot-product-alt.wvr_bound2.c [2023-08-03 20:20:10,984 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 20:20:10,992 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 20:20:10,992 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 20:20:10,992 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 20:20:11,070 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 20:20:11,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 335 places, 378 transitions, 798 flow [2023-08-03 20:20:11,381 INFO L124 PetriNetUnfolderBase]: 140/962 cut-off events. [2023-08-03 20:20:11,381 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:20:11,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1023 conditions, 962 events. 140/962 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5223 event pairs, 0 based on Foata normal form. 0/812 useless extension candidates. Maximal degree in co-relation 571. Up to 16 conditions per place. [2023-08-03 20:20:11,400 INFO L82 GeneralOperation]: Start removeDead. Operand has 335 places, 378 transitions, 798 flow [2023-08-03 20:20:11,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 335 places, 378 transitions, 798 flow [2023-08-03 20:20:11,416 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:20:11,423 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 335 places, 378 transitions, 798 flow [2023-08-03 20:20:11,426 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 335 places, 378 transitions, 798 flow [2023-08-03 20:20:11,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 335 places, 378 transitions, 798 flow [2023-08-03 20:20:11,597 INFO L124 PetriNetUnfolderBase]: 140/962 cut-off events. [2023-08-03 20:20:11,598 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:20:11,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1023 conditions, 962 events. 140/962 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5223 event pairs, 0 based on Foata normal form. 0/812 useless extension candidates. Maximal degree in co-relation 571. Up to 16 conditions per place. [2023-08-03 20:20:11,634 INFO L119 LiptonReduction]: Number of co-enabled transitions 27144 [2023-08-03 20:20:21,889 INFO L134 LiptonReduction]: Checked pairs total: 40297 [2023-08-03 20:20:21,889 INFO L136 LiptonReduction]: Total number of compositions: 392 [2023-08-03 20:20:21,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:20:21,908 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;@22942a3b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:20:21,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:20:21,915 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:20:21,915 INFO L124 PetriNetUnfolderBase]: 5/40 cut-off events. [2023-08-03 20:20:21,915 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 20:20:21,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:20:21,916 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:20:21,916 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:20:21,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:20:21,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1174950403, now seen corresponding path program 1 times [2023-08-03 20:20:21,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:20:21,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807912140] [2023-08-03 20:20:21,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:20:21,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:20:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:20:22,412 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 20:20:22,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:20:22,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807912140] [2023-08-03 20:20:22,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807912140] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:20:22,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:20:22,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 20:20:22,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450556536] [2023-08-03 20:20:22,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:20:22,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 20:20:22,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:20:22,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 20:20:22,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 20:20:22,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 770 [2023-08-03 20:20:22,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 71 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 324.75) internal successors, (1299), 4 states have internal predecessors, (1299), 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 20:20:22,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:20:22,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 770 [2023-08-03 20:20:22,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:20:25,160 INFO L124 PetriNetUnfolderBase]: 18845/25227 cut-off events. [2023-08-03 20:20:25,161 INFO L125 PetriNetUnfolderBase]: For 1332/1332 co-relation queries the response was YES. [2023-08-03 20:20:25,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50653 conditions, 25227 events. 18845/25227 cut-off events. For 1332/1332 co-relation queries the response was YES. Maximal size of possible extension queue 932. Compared 137178 event pairs, 12048 based on Foata normal form. 0/16891 useless extension candidates. Maximal degree in co-relation 44309. Up to 24596 conditions per place. [2023-08-03 20:20:25,329 INFO L140 encePairwiseOnDemand]: 760/770 looper letters, 57 selfloop transitions, 4 changer transitions 7/77 dead transitions. [2023-08-03 20:20:25,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 77 transitions, 332 flow [2023-08-03 20:20:25,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:20:25,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:20:25,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1689 transitions. [2023-08-03 20:20:25,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387012987012987 [2023-08-03 20:20:25,352 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1689 transitions. [2023-08-03 20:20:25,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1689 transitions. [2023-08-03 20:20:25,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:20:25,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1689 transitions. [2023-08-03 20:20:25,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 337.8) internal successors, (1689), 5 states have internal predecessors, (1689), 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 20:20:25,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 770.0) internal successors, (4620), 6 states have internal predecessors, (4620), 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 20:20:25,380 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 770.0) internal successors, (4620), 6 states have internal predecessors, (4620), 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 20:20:25,382 INFO L175 Difference]: Start difference. First operand has 58 places, 71 transitions, 184 flow. Second operand 5 states and 1689 transitions. [2023-08-03 20:20:25,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 77 transitions, 332 flow [2023-08-03 20:20:25,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 77 transitions, 332 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 20:20:25,394 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 208 flow [2023-08-03 20:20:25,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=770, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2023-08-03 20:20:25,400 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2023-08-03 20:20:25,400 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 208 flow [2023-08-03 20:20:25,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 324.75) internal successors, (1299), 4 states have internal predecessors, (1299), 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 20:20:25,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:20:25,402 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:20:25,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 20:20:25,403 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:20:25,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:20:25,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2050738416, now seen corresponding path program 1 times [2023-08-03 20:20:25,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:20:25,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585510817] [2023-08-03 20:20:25,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:20:25,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:20:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:20:25,500 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 20:20:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:20:25,561 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 20:20:25,561 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 20:20:25,562 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 20:20:25,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 20:20:25,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 20:20:25,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 20:20:25,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 20:20:25,565 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 20:20:25,567 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 20:20:25,567 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 20:20:25,625 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 20:20:25,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 443 places, 507 transitions, 1104 flow [2023-08-03 20:20:26,652 INFO L124 PetriNetUnfolderBase]: 1006/5002 cut-off events. [2023-08-03 20:20:26,653 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:20:26,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5676 conditions, 5002 events. 1006/5002 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 42008 event pairs, 11 based on Foata normal form. 0/4240 useless extension candidates. Maximal degree in co-relation 3058. Up to 192 conditions per place. [2023-08-03 20:20:26,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 443 places, 507 transitions, 1104 flow [2023-08-03 20:20:26,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 443 places, 507 transitions, 1104 flow [2023-08-03 20:20:26,806 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:20:26,806 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 443 places, 507 transitions, 1104 flow [2023-08-03 20:20:26,807 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 443 places, 507 transitions, 1104 flow [2023-08-03 20:20:26,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 443 places, 507 transitions, 1104 flow [2023-08-03 20:20:27,791 INFO L124 PetriNetUnfolderBase]: 1006/5002 cut-off events. [2023-08-03 20:20:27,791 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:20:27,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5676 conditions, 5002 events. 1006/5002 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 42008 event pairs, 11 based on Foata normal form. 0/4240 useless extension candidates. Maximal degree in co-relation 3058. Up to 192 conditions per place. [2023-08-03 20:20:28,281 INFO L119 LiptonReduction]: Number of co-enabled transitions 86580 [2023-08-03 20:20:41,894 INFO L134 LiptonReduction]: Checked pairs total: 150709 [2023-08-03 20:20:41,895 INFO L136 LiptonReduction]: Total number of compositions: 512 [2023-08-03 20:20:41,897 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:20:41,898 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;@22942a3b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:20:41,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:20:41,902 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:20:41,903 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2023-08-03 20:20:41,903 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 20:20:41,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:20:41,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:20:41,903 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 1 more)] === [2023-08-03 20:20:41,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:20:41,904 INFO L85 PathProgramCache]: Analyzing trace with hash -135999885, now seen corresponding path program 1 times [2023-08-03 20:20:41,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:20:41,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149478624] [2023-08-03 20:20:41,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:20:41,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:20:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:20:41,944 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 20:20:41,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:20:41,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149478624] [2023-08-03 20:20:41,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149478624] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:20:41,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:20:41,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 20:20:41,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178829750] [2023-08-03 20:20:41,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:20:41,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:20:41,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:20:41,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:20:41,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:20:41,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 441 out of 1019 [2023-08-03 20:20:41,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 110 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 444.3333333333333) internal successors, (1333), 3 states have internal predecessors, (1333), 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 20:20:41,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:20:41,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 441 of 1019 [2023-08-03 20:20:41,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand