/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-more-array-sum-alt.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 20:33:12,285 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 20:33:12,332 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 20:33:12,335 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 20:33:12,336 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 20:33:12,336 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 20:33:12,337 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 20:33:12,355 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 20:33:12,355 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 20:33:12,356 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 20:33:12,356 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 20:33:12,356 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 20:33:12,357 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 20:33:12,357 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 20:33:12,358 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 20:33:12,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 20:33:12,358 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 20:33:12,359 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 20:33:12,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 20:33:12,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 20:33:12,359 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 20:33:12,364 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 20:33:12,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 20:33:12,365 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 20:33:12,365 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 20:33:12,365 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 20:33:12,366 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 20:33:12,366 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 20:33:12,366 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 20:33:12,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 20:33:12,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:33:12,367 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 20:33:12,367 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 20:33:12,368 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 20:33:12,368 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 20:33:12,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 20:33:12,368 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 20:33:12,369 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 20:33:12,369 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 20:33:12,369 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 20:33:12,370 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 20:33:12,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 20:33:12,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 20:33:12,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 20:33:12,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 20:33:12,572 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 20:33:12,572 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 20:33:12,573 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-array-sum-alt.wvr_bound2.c [2023-08-03 20:33:13,687 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 20:33:13,925 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 20:33:13,926 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-array-sum-alt.wvr_bound2.c [2023-08-03 20:33:13,935 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dca1b07f/4ed6d3f144864824b8fa1dbe6f49fd11/FLAGa8aecb827 [2023-08-03 20:33:13,950 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dca1b07f/4ed6d3f144864824b8fa1dbe6f49fd11 [2023-08-03 20:33:13,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 20:33:13,958 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 20:33:13,962 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 20:33:13,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 20:33:13,965 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 20:33:13,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:33:13" (1/1) ... [2023-08-03 20:33:13,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b52357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:13, skipping insertion in model container [2023-08-03 20:33:13,967 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:33:13" (1/1) ... [2023-08-03 20:33:13,992 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 20:33:14,150 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-more-array-sum-alt.wvr_bound2.c[3004,3017] [2023-08-03 20:33:14,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:33:14,163 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 20:33:14,184 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-more-array-sum-alt.wvr_bound2.c[3004,3017] [2023-08-03 20:33:14,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:33:14,195 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:33:14,195 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:33:14,203 INFO L206 MainTranslator]: Completed translation [2023-08-03 20:33:14,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:14 WrapperNode [2023-08-03 20:33:14,204 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 20:33:14,205 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 20:33:14,205 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 20:33:14,205 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 20:33:14,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:14" (1/1) ... [2023-08-03 20:33:14,223 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:14" (1/1) ... [2023-08-03 20:33:14,260 INFO L138 Inliner]: procedures = 25, calls = 51, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 251 [2023-08-03 20:33:14,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 20:33:14,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 20:33:14,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 20:33:14,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 20:33:14,273 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:14" (1/1) ... [2023-08-03 20:33:14,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:14" (1/1) ... [2023-08-03 20:33:14,293 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:14" (1/1) ... [2023-08-03 20:33:14,294 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:14" (1/1) ... [2023-08-03 20:33:14,301 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:14" (1/1) ... [2023-08-03 20:33:14,317 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:14" (1/1) ... [2023-08-03 20:33:14,319 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:14" (1/1) ... [2023-08-03 20:33:14,320 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:14" (1/1) ... [2023-08-03 20:33:14,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 20:33:14,324 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 20:33:14,324 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 20:33:14,324 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 20:33:14,324 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:14" (1/1) ... [2023-08-03 20:33:14,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:33:14,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:33:14,370 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 20:33:14,375 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 20:33:14,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 20:33:14,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 20:33:14,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 20:33:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 20:33:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 20:33:14,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 20:33:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 20:33:14,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 20:33:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 20:33:14,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 20:33:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 20:33:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 20:33:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 20:33:14,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 20:33:14,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 20:33:14,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 20:33:14,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 20:33:14,400 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 20:33:14,501 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 20:33:14,503 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 20:33:14,796 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 20:33:14,953 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 20:33:14,954 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-03 20:33:14,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:33:14 BoogieIcfgContainer [2023-08-03 20:33:14,956 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 20:33:14,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 20:33:14,960 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 20:33:14,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 20:33:14,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 08:33:13" (1/3) ... [2023-08-03 20:33:14,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4217361d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:33:14, skipping insertion in model container [2023-08-03 20:33:14,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:14" (2/3) ... [2023-08-03 20:33:14,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4217361d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:33:14, skipping insertion in model container [2023-08-03 20:33:14,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:33:14" (3/3) ... [2023-08-03 20:33:14,966 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-more-array-sum-alt.wvr_bound2.c [2023-08-03 20:33:14,971 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 20:33:14,977 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 20:33:14,977 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 20:33:14,977 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 20:33:15,062 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 20:33:15,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 195 transitions, 432 flow [2023-08-03 20:33:15,301 INFO L124 PetriNetUnfolderBase]: 101/667 cut-off events. [2023-08-03 20:33:15,302 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:33:15,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 667 events. 101/667 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3319 event pairs, 0 based on Foata normal form. 0/556 useless extension candidates. Maximal degree in co-relation 388. Up to 16 conditions per place. [2023-08-03 20:33:15,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 195 transitions, 432 flow [2023-08-03 20:33:15,324 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 195 transitions, 432 flow [2023-08-03 20:33:15,327 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:33:15,338 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 195 transitions, 432 flow [2023-08-03 20:33:15,341 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 195 transitions, 432 flow [2023-08-03 20:33:15,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 195 transitions, 432 flow [2023-08-03 20:33:15,411 INFO L124 PetriNetUnfolderBase]: 101/667 cut-off events. [2023-08-03 20:33:15,412 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:33:15,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 667 events. 101/667 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3319 event pairs, 0 based on Foata normal form. 0/556 useless extension candidates. Maximal degree in co-relation 388. Up to 16 conditions per place. [2023-08-03 20:33:15,425 INFO L119 LiptonReduction]: Number of co-enabled transitions 5808 [2023-08-03 20:33:20,017 INFO L134 LiptonReduction]: Checked pairs total: 11200 [2023-08-03 20:33:20,017 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-08-03 20:33:20,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:33:20,034 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;@4939f273, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:33:20,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:33:20,039 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:33:20,039 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2023-08-03 20:33:20,039 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 20:33:20,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:33:20,040 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-03 20:33:20,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:33:20,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:33:20,045 INFO L85 PathProgramCache]: Analyzing trace with hash -176869310, now seen corresponding path program 1 times [2023-08-03 20:33:20,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:33:20,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491694289] [2023-08-03 20:33:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:33:20,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:33:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:33:20,201 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 20:33:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:33:20,259 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 20:33:20,261 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 20:33:20,262 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 20:33:20,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 20:33:20,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 20:33:20,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 20:33:20,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 20:33:20,264 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 20:33:20,267 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 20:33:20,267 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 20:33:20,322 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 20:33:20,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 240 transitions, 570 flow [2023-08-03 20:33:20,951 INFO L124 PetriNetUnfolderBase]: 891/4175 cut-off events. [2023-08-03 20:33:20,952 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:33:20,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4849 conditions, 4175 events. 891/4175 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 33448 event pairs, 22 based on Foata normal form. 0/3528 useless extension candidates. Maximal degree in co-relation 2468. Up to 192 conditions per place. [2023-08-03 20:33:20,980 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 240 transitions, 570 flow [2023-08-03 20:33:21,007 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 240 transitions, 570 flow [2023-08-03 20:33:21,007 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:33:21,008 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 240 transitions, 570 flow [2023-08-03 20:33:21,008 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 240 transitions, 570 flow [2023-08-03 20:33:21,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 240 transitions, 570 flow [2023-08-03 20:33:21,564 INFO L124 PetriNetUnfolderBase]: 891/4175 cut-off events. [2023-08-03 20:33:21,564 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:33:21,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4849 conditions, 4175 events. 891/4175 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 33448 event pairs, 22 based on Foata normal form. 0/3528 useless extension candidates. Maximal degree in co-relation 2468. Up to 192 conditions per place. [2023-08-03 20:33:21,655 INFO L119 LiptonReduction]: Number of co-enabled transitions 15180 [2023-08-03 20:33:26,453 INFO L134 LiptonReduction]: Checked pairs total: 37969 [2023-08-03 20:33:26,454 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-08-03 20:33:26,456 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:33:26,457 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;@4939f273, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:33:26,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:33:26,460 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:33:26,461 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2023-08-03 20:33:26,461 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 20:33:26,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:33:26,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:33:26,461 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 20:33:26,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:33:26,462 INFO L85 PathProgramCache]: Analyzing trace with hash -968025918, now seen corresponding path program 1 times [2023-08-03 20:33:26,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:33:26,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111878362] [2023-08-03 20:33:26,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:33:26,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:33:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:33:26,554 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 20:33:26,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:33:26,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111878362] [2023-08-03 20:33:26,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111878362] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:33:26,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:33:26,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 20:33:26,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548619251] [2023-08-03 20:33:26,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:33:26,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:33:26,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:33:26,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:33:26,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:33:26,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 431 [2023-08-03 20:33:26,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 79 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 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 20:33:26,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:33:26,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 431 [2023-08-03 20:33:26,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:34:53,672 INFO L124 PetriNetUnfolderBase]: 1058173/1259563 cut-off events. [2023-08-03 20:34:53,672 INFO L125 PetriNetUnfolderBase]: For 122385/122385 co-relation queries the response was YES. [2023-08-03 20:34:56,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2552139 conditions, 1259563 events. 1058173/1259563 cut-off events. For 122385/122385 co-relation queries the response was YES. Maximal size of possible extension queue 24649. Compared 6783048 event pairs, 534175 based on Foata normal form. 0/797508 useless extension candidates. Maximal degree in co-relation 925474. Up to 1228533 conditions per place. [2023-08-03 20:35:03,421 INFO L140 encePairwiseOnDemand]: 427/431 looper letters, 66 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-03 20:35:03,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 83 transitions, 392 flow [2023-08-03 20:35:03,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:35:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:35:03,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 634 transitions. [2023-08-03 20:35:03,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4903325599381284 [2023-08-03 20:35:03,461 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 634 transitions. [2023-08-03 20:35:03,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 634 transitions. [2023-08-03 20:35:03,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:35:03,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 634 transitions. [2023-08-03 20:35:03,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 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 20:35:03,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 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 20:35:03,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 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 20:35:03,499 INFO L175 Difference]: Start difference. First operand has 67 places, 79 transitions, 248 flow. Second operand 3 states and 634 transitions. [2023-08-03 20:35:03,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 83 transitions, 392 flow [2023-08-03 20:35:03,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 83 transitions, 392 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 20:35:03,653 INFO L231 Difference]: Finished difference. Result has 69 places, 79 transitions, 258 flow [2023-08-03 20:35:03,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=431, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=69, PETRI_TRANSITIONS=79} [2023-08-03 20:35:03,658 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2023-08-03 20:35:03,659 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 79 transitions, 258 flow [2023-08-03 20:35:03,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 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 20:35:03,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:35:03,668 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-03 20:35:03,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 20:35:03,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:35:03,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:35:03,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1498115553, now seen corresponding path program 1 times [2023-08-03 20:35:03,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:35:03,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632910599] [2023-08-03 20:35:03,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:35:03,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:35:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:35:03,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:35:03,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:35:03,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632910599] [2023-08-03 20:35:03,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632910599] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:35:03,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906760717] [2023-08-03 20:35:03,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:35:03,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:35:03,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:35:03,837 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:35:03,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 20:35:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:35:04,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:35:04,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:35:04,087 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:35:04,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:35:04,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906760717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:35:04,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:35:04,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 20:35:04,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352153] [2023-08-03 20:35:04,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:35:04,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:35:04,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:35:04,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:35:04,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:35:04,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 431 [2023-08-03 20:35:04,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 79 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 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 20:35:04,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:35:04,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 431 [2023-08-03 20:35:04,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand