./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 41cf9d90b654ba629ed26494b45977a61fd5035aced9f092d4e43a94133522bd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 13:48:28,503 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 13:48:28,568 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 13:48:28,573 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 13:48:28,573 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 13:48:28,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 13:48:28,596 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 13:48:28,597 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 13:48:28,597 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 13:48:28,598 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 13:48:28,598 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 13:48:28,598 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 13:48:28,599 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 13:48:28,599 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 13:48:28,599 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 13:48:28,599 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 13:48:28,600 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 13:48:28,600 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 13:48:28,600 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 13:48:28,601 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 13:48:28,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 13:48:28,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 13:48:28,602 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 13:48:28,602 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 13:48:28,602 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 13:48:28,602 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 13:48:28,603 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 13:48:28,603 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 13:48:28,603 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 13:48:28,603 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 13:48:28,604 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 13:48:28,604 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 13:48:28,604 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 13:48:28,604 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 13:48:28,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:48:28,605 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 13:48:28,605 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 13:48:28,605 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 13:48:28,605 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 13:48:28,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 13:48:28,606 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 13:48:28,606 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 13:48:28,606 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 13:48:28,606 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 13:48:28,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41cf9d90b654ba629ed26494b45977a61fd5035aced9f092d4e43a94133522bd [2024-11-19 13:48:28,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 13:48:28,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 13:48:28,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 13:48:28,862 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 13:48:28,863 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 13:48:28,864 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i [2024-11-19 13:48:30,174 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 13:48:30,377 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 13:48:30,377 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i [2024-11-19 13:48:30,389 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca8219f67/2ed2b06728ca4cebb3134629dab446ca/FLAG6bf7195d3 [2024-11-19 13:48:30,401 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca8219f67/2ed2b06728ca4cebb3134629dab446ca [2024-11-19 13:48:30,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 13:48:30,404 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 13:48:30,405 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 13:48:30,405 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 13:48:30,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 13:48:30,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:48:30" (1/1) ... [2024-11-19 13:48:30,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed3a02f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:30, skipping insertion in model container [2024-11-19 13:48:30,411 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:48:30" (1/1) ... [2024-11-19 13:48:30,448 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 13:48:30,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:48:30,749 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 13:48:30,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:48:30,834 INFO L204 MainTranslator]: Completed translation [2024-11-19 13:48:30,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:30 WrapperNode [2024-11-19 13:48:30,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 13:48:30,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 13:48:30,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 13:48:30,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 13:48:30,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:30" (1/1) ... [2024-11-19 13:48:30,870 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:30" (1/1) ... [2024-11-19 13:48:30,901 INFO L138 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 79 [2024-11-19 13:48:30,914 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 13:48:30,915 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 13:48:30,915 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 13:48:30,915 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 13:48:30,925 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:30" (1/1) ... [2024-11-19 13:48:30,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:30" (1/1) ... [2024-11-19 13:48:30,928 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:30" (1/1) ... [2024-11-19 13:48:30,951 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 6]. The 0 writes are split as follows [0, 0, 0]. [2024-11-19 13:48:30,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:30" (1/1) ... [2024-11-19 13:48:30,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:30" (1/1) ... [2024-11-19 13:48:30,963 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:30" (1/1) ... [2024-11-19 13:48:30,966 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:30" (1/1) ... [2024-11-19 13:48:30,967 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:30" (1/1) ... [2024-11-19 13:48:30,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:30" (1/1) ... [2024-11-19 13:48:30,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 13:48:30,971 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 13:48:30,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 13:48:30,971 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 13:48:30,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:30" (1/1) ... [2024-11-19 13:48:30,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:48:30,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:31,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 13:48:31,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 13:48:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 13:48:31,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 13:48:31,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 13:48:31,050 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-19 13:48:31,050 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-19 13:48:31,050 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 13:48:31,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 13:48:31,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 13:48:31,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 13:48:31,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 13:48:31,052 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 13:48:31,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 13:48:31,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 13:48:31,054 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 13:48:31,160 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 13:48:31,161 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 13:48:31,281 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 13:48:31,281 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 13:48:31,398 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 13:48:31,399 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 13:48:31,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:48:31 BoogieIcfgContainer [2024-11-19 13:48:31,400 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 13:48:31,401 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 13:48:31,402 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 13:48:31,404 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 13:48:31,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:48:30" (1/3) ... [2024-11-19 13:48:31,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75550e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:48:31, skipping insertion in model container [2024-11-19 13:48:31,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:30" (2/3) ... [2024-11-19 13:48:31,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75550e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:48:31, skipping insertion in model container [2024-11-19 13:48:31,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:48:31" (3/3) ... [2024-11-19 13:48:31,408 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym-zero.i [2024-11-19 13:48:31,423 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 13:48:31,423 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-19 13:48:31,423 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 13:48:31,467 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:48:31,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 23 transitions, 50 flow [2024-11-19 13:48:31,519 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-11-19 13:48:31,519 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:48:31,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 25 events. 2/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 29 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-11-19 13:48:31,523 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 23 transitions, 50 flow [2024-11-19 13:48:31,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 23 transitions, 50 flow [2024-11-19 13:48:31,538 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:48:31,548 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@3afb2c63, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:48:31,549 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-19 13:48:31,555 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:48:31,556 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-19 13:48:31,556 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:48:31,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:31,557 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 13:48:31,557 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:48:31,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:31,563 INFO L85 PathProgramCache]: Analyzing trace with hash 235472447, now seen corresponding path program 1 times [2024-11-19 13:48:31,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:31,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576933487] [2024-11-19 13:48:31,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:31,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:31,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:31,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:31,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576933487] [2024-11-19 13:48:31,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576933487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:31,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:31,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:31,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138363587] [2024-11-19 13:48:31,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:31,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:31,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:31,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:31,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:31,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 23 [2024-11-19 13:48:31,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 23 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2024-11-19 13:48:31,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:31,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 23 [2024-11-19 13:48:31,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:31,891 INFO L124 PetriNetUnfolderBase]: 19/67 cut-off events. [2024-11-19 13:48:31,892 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:48:31,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 67 events. 19/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 156 event pairs, 2 based on Foata normal form. 3/67 useless extension candidates. Maximal degree in co-relation 108. Up to 38 conditions per place. [2024-11-19 13:48:31,893 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 13 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2024-11-19 13:48:31,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 22 transitions, 78 flow [2024-11-19 13:48:31,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:31,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:31,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2024-11-19 13:48:31,903 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5797101449275363 [2024-11-19 13:48:31,904 INFO L175 Difference]: Start difference. First operand has 24 places, 23 transitions, 50 flow. Second operand 3 states and 40 transitions. [2024-11-19 13:48:31,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 22 transitions, 78 flow [2024-11-19 13:48:31,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 22 transitions, 78 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:48:31,908 INFO L231 Difference]: Finished difference. Result has 24 places, 20 transitions, 48 flow [2024-11-19 13:48:31,910 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=24, PETRI_TRANSITIONS=20} [2024-11-19 13:48:31,913 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2024-11-19 13:48:31,913 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 20 transitions, 48 flow [2024-11-19 13:48:31,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2024-11-19 13:48:31,913 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:31,913 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 13:48:31,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 13:48:31,914 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:48:31,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:31,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1290304518, now seen corresponding path program 1 times [2024-11-19 13:48:31,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:31,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479352242] [2024-11-19 13:48:31,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:31,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:48:31,935 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 13:48:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:48:31,980 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 13:48:31,981 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 13:48:31,982 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-11-19 13:48:31,983 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2024-11-19 13:48:31,984 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2024-11-19 13:48:31,984 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2024-11-19 13:48:31,984 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2024-11-19 13:48:31,985 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2024-11-19 13:48:31,985 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2024-11-19 13:48:31,985 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2024-11-19 13:48:31,985 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2024-11-19 13:48:31,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 13:48:31,986 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 13:48:31,988 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 13:48:31,989 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 13:48:32,015 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:48:32,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 41 transitions, 92 flow [2024-11-19 13:48:32,033 INFO L124 PetriNetUnfolderBase]: 4/46 cut-off events. [2024-11-19 13:48:32,034 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 13:48:32,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 46 events. 4/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 88 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 37. Up to 3 conditions per place. [2024-11-19 13:48:32,037 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 41 transitions, 92 flow [2024-11-19 13:48:32,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 41 transitions, 92 flow [2024-11-19 13:48:32,040 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:48:32,041 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@3afb2c63, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:48:32,041 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-19 13:48:32,044 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:48:32,045 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-19 13:48:32,045 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 13:48:32,045 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:32,045 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 13:48:32,048 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-19 13:48:32,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:32,049 INFO L85 PathProgramCache]: Analyzing trace with hash 274615833, now seen corresponding path program 1 times [2024-11-19 13:48:32,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:32,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92720149] [2024-11-19 13:48:32,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:32,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:32,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:32,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92720149] [2024-11-19 13:48:32,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92720149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:32,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:32,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:32,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553047216] [2024-11-19 13:48:32,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:32,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:32,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:32,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:32,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:32,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-11-19 13:48:32,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-19 13:48:32,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:32,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-11-19 13:48:32,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:32,331 INFO L124 PetriNetUnfolderBase]: 388/818 cut-off events. [2024-11-19 13:48:32,332 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-19 13:48:32,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 818 events. 388/818 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4425 event pairs, 144 based on Foata normal form. 54/812 useless extension candidates. Maximal degree in co-relation 1276. Up to 517 conditions per place. [2024-11-19 13:48:32,342 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 31 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2024-11-19 13:48:32,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 48 transitions, 177 flow [2024-11-19 13:48:32,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:32,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:32,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-19 13:48:32,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6829268292682927 [2024-11-19 13:48:32,345 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 92 flow. Second operand 3 states and 84 transitions. [2024-11-19 13:48:32,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 48 transitions, 177 flow [2024-11-19 13:48:32,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 177 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:48:32,347 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 88 flow [2024-11-19 13:48:32,348 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-11-19 13:48:32,349 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-11-19 13:48:32,349 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 88 flow [2024-11-19 13:48:32,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-19 13:48:32,350 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:32,350 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 13:48:32,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 13:48:32,350 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-19 13:48:32,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:32,351 INFO L85 PathProgramCache]: Analyzing trace with hash -76843448, now seen corresponding path program 1 times [2024-11-19 13:48:32,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:32,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158659690] [2024-11-19 13:48:32,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:32,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:32,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:32,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158659690] [2024-11-19 13:48:32,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158659690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:32,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:32,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:32,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815863550] [2024-11-19 13:48:32,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:32,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:32,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:32,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:32,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:32,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-11-19 13:48:32,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-19 13:48:32,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:32,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-11-19 13:48:32,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:32,546 INFO L124 PetriNetUnfolderBase]: 345/739 cut-off events. [2024-11-19 13:48:32,546 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-11-19 13:48:32,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 739 events. 345/739 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3874 event pairs, 126 based on Foata normal form. 27/712 useless extension candidates. Maximal degree in co-relation 1187. Up to 447 conditions per place. [2024-11-19 13:48:32,554 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 30 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2024-11-19 13:48:32,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 177 flow [2024-11-19 13:48:32,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:32,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:32,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-11-19 13:48:32,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-11-19 13:48:32,556 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 88 flow. Second operand 3 states and 78 transitions. [2024-11-19 13:48:32,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 177 flow [2024-11-19 13:48:32,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 173 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:32,557 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 86 flow [2024-11-19 13:48:32,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-11-19 13:48:32,558 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2024-11-19 13:48:32,558 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 86 flow [2024-11-19 13:48:32,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-19 13:48:32,558 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:32,558 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:32,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 13:48:32,559 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-19 13:48:32,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:32,559 INFO L85 PathProgramCache]: Analyzing trace with hash -863725506, now seen corresponding path program 1 times [2024-11-19 13:48:32,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:32,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128463334] [2024-11-19 13:48:32,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:32,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:32,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 13:48:32,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:32,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128463334] [2024-11-19 13:48:32,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128463334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:32,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:32,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:32,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313027367] [2024-11-19 13:48:32,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:32,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:32,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:32,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:32,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:32,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-11-19 13:48:32,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-19 13:48:32,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:32,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-11-19 13:48:32,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:32,731 INFO L124 PetriNetUnfolderBase]: 385/811 cut-off events. [2024-11-19 13:48:32,734 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-19 13:48:32,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 811 events. 385/811 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4417 event pairs, 72 based on Foata normal form. 24/796 useless extension candidates. Maximal degree in co-relation 1040. Up to 472 conditions per place. [2024-11-19 13:48:32,739 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 30 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-11-19 13:48:32,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 172 flow [2024-11-19 13:48:32,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:32,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:32,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-11-19 13:48:32,741 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-11-19 13:48:32,741 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 86 flow. Second operand 3 states and 78 transitions. [2024-11-19 13:48:32,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 172 flow [2024-11-19 13:48:32,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:32,743 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 84 flow [2024-11-19 13:48:32,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2024-11-19 13:48:32,744 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -2 predicate places. [2024-11-19 13:48:32,745 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 84 flow [2024-11-19 13:48:32,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-19 13:48:32,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:32,746 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-19 13:48:32,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 13:48:32,746 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-19 13:48:32,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:32,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1005702635, now seen corresponding path program 1 times [2024-11-19 13:48:32,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:32,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630984883] [2024-11-19 13:48:32,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:32,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:48:32,757 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 13:48:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:48:32,764 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 13:48:32,765 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 13:48:32,765 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-19 13:48:32,765 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-19 13:48:32,765 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-19 13:48:32,765 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-19 13:48:32,765 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-19 13:48:32,765 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-19 13:48:32,765 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-19 13:48:32,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-19 13:48:32,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-19 13:48:32,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-19 13:48:32,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-19 13:48:32,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-19 13:48:32,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-19 13:48:32,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 13:48:32,766 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-19 13:48:32,767 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 13:48:32,767 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-19 13:48:32,788 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:48:32,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 59 transitions, 136 flow [2024-11-19 13:48:32,795 INFO L124 PetriNetUnfolderBase]: 6/67 cut-off events. [2024-11-19 13:48:32,795 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-19 13:48:32,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 6/67 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 174 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2024-11-19 13:48:32,796 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 59 transitions, 136 flow [2024-11-19 13:48:32,796 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 59 transitions, 136 flow [2024-11-19 13:48:32,797 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:48:32,798 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@3afb2c63, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:48:32,798 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-19 13:48:32,799 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:48:32,799 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-19 13:48:32,800 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 13:48:32,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:32,800 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 13:48:32,800 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 13:48:32,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:32,800 INFO L85 PathProgramCache]: Analyzing trace with hash 330936165, now seen corresponding path program 1 times [2024-11-19 13:48:32,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:32,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160976195] [2024-11-19 13:48:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:32,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:32,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:32,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160976195] [2024-11-19 13:48:32,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160976195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:32,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:32,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:32,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325865036] [2024-11-19 13:48:32,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:32,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:32,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:32,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:32,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:32,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-19 13:48:32,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2024-11-19 13:48:32,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:32,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-19 13:48:32,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:33,442 INFO L124 PetriNetUnfolderBase]: 5068/8513 cut-off events. [2024-11-19 13:48:33,442 INFO L125 PetriNetUnfolderBase]: For 473/473 co-relation queries the response was YES. [2024-11-19 13:48:33,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15876 conditions, 8513 events. 5068/8513 cut-off events. For 473/473 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 59523 event pairs, 2492 based on Foata normal form. 678/8654 useless extension candidates. Maximal degree in co-relation 10761. Up to 5693 conditions per place. [2024-11-19 13:48:33,493 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 49 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-11-19 13:48:33,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 280 flow [2024-11-19 13:48:33,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:33,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:33,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2024-11-19 13:48:33,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7231638418079096 [2024-11-19 13:48:33,496 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 136 flow. Second operand 3 states and 128 transitions. [2024-11-19 13:48:33,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 280 flow [2024-11-19 13:48:33,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 74 transitions, 276 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-19 13:48:33,498 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 128 flow [2024-11-19 13:48:33,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-11-19 13:48:33,499 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places. [2024-11-19 13:48:33,499 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 128 flow [2024-11-19 13:48:33,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2024-11-19 13:48:33,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:33,500 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 13:48:33,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 13:48:33,500 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 13:48:33,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:33,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1669086903, now seen corresponding path program 1 times [2024-11-19 13:48:33,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:33,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761004777] [2024-11-19 13:48:33,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:33,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:33,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:33,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761004777] [2024-11-19 13:48:33,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761004777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:33,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:33,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:33,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403104676] [2024-11-19 13:48:33,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:33,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:33,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:33,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:33,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:33,561 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-19 13:48:33,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2024-11-19 13:48:33,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:33,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-19 13:48:33,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:34,183 INFO L124 PetriNetUnfolderBase]: 4505/7983 cut-off events. [2024-11-19 13:48:34,183 INFO L125 PetriNetUnfolderBase]: For 671/671 co-relation queries the response was YES. [2024-11-19 13:48:34,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14904 conditions, 7983 events. 4505/7983 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 59700 event pairs, 806 based on Foata normal form. 219/7788 useless extension candidates. Maximal degree in co-relation 13393. Up to 4911 conditions per place. [2024-11-19 13:48:34,220 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 48 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2024-11-19 13:48:34,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 73 transitions, 276 flow [2024-11-19 13:48:34,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:34,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:34,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-11-19 13:48:34,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6779661016949152 [2024-11-19 13:48:34,222 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 128 flow. Second operand 3 states and 120 transitions. [2024-11-19 13:48:34,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 73 transitions, 276 flow [2024-11-19 13:48:34,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:34,225 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 126 flow [2024-11-19 13:48:34,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-11-19 13:48:34,226 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2024-11-19 13:48:34,226 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 126 flow [2024-11-19 13:48:34,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2024-11-19 13:48:34,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:34,226 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:34,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 13:48:34,226 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 13:48:34,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:34,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1938115678, now seen corresponding path program 1 times [2024-11-19 13:48:34,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:34,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019355579] [2024-11-19 13:48:34,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:34,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 13:48:34,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:34,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019355579] [2024-11-19 13:48:34,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019355579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:34,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:34,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:34,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793154752] [2024-11-19 13:48:34,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:34,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:34,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:34,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:34,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:34,285 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-19 13:48:34,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-11-19 13:48:34,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:34,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-19 13:48:34,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:34,810 INFO L124 PetriNetUnfolderBase]: 5065/8767 cut-off events. [2024-11-19 13:48:34,810 INFO L125 PetriNetUnfolderBase]: For 745/745 co-relation queries the response was YES. [2024-11-19 13:48:34,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16542 conditions, 8767 events. 5065/8767 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 64748 event pairs, 824 based on Foata normal form. 216/8558 useless extension candidates. Maximal degree in co-relation 12036. Up to 5648 conditions per place. [2024-11-19 13:48:34,851 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 48 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-11-19 13:48:34,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 71 transitions, 271 flow [2024-11-19 13:48:34,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:34,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:34,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-11-19 13:48:34,852 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6779661016949152 [2024-11-19 13:48:34,852 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 126 flow. Second operand 3 states and 120 transitions. [2024-11-19 13:48:34,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 71 transitions, 271 flow [2024-11-19 13:48:34,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 71 transitions, 263 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:34,856 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 124 flow [2024-11-19 13:48:34,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-11-19 13:48:34,857 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places. [2024-11-19 13:48:34,857 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 124 flow [2024-11-19 13:48:34,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-11-19 13:48:34,857 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:34,858 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:34,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 13:48:34,858 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 13:48:34,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:34,859 INFO L85 PathProgramCache]: Analyzing trace with hash -47955729, now seen corresponding path program 1 times [2024-11-19 13:48:34,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:34,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446120802] [2024-11-19 13:48:34,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:34,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:34,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 13:48:34,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:34,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446120802] [2024-11-19 13:48:34,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446120802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:34,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:34,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:34,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521505936] [2024-11-19 13:48:34,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:34,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:34,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:34,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:34,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:34,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-19 13:48:34,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-11-19 13:48:34,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:34,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-19 13:48:34,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:35,520 INFO L124 PetriNetUnfolderBase]: 4505/7991 cut-off events. [2024-11-19 13:48:35,521 INFO L125 PetriNetUnfolderBase]: For 658/658 co-relation queries the response was YES. [2024-11-19 13:48:35,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14906 conditions, 7991 events. 4505/7991 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 59377 event pairs, 824 based on Foata normal form. 216/7800 useless extension candidates. Maximal degree in co-relation 9230. Up to 4872 conditions per place. [2024-11-19 13:48:35,555 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 47 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-19 13:48:35,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 70 transitions, 263 flow [2024-11-19 13:48:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:35,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-11-19 13:48:35,557 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.672316384180791 [2024-11-19 13:48:35,557 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 124 flow. Second operand 3 states and 119 transitions. [2024-11-19 13:48:35,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 70 transitions, 263 flow [2024-11-19 13:48:35,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 70 transitions, 259 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:35,559 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 122 flow [2024-11-19 13:48:35,560 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-19 13:48:35,562 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2024-11-19 13:48:35,562 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 122 flow [2024-11-19 13:48:35,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-11-19 13:48:35,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:35,562 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:35,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 13:48:35,563 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 13:48:35,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:35,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1111365222, now seen corresponding path program 1 times [2024-11-19 13:48:35,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:35,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412043417] [2024-11-19 13:48:35,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:35,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:35,594 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 13:48:35,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:35,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412043417] [2024-11-19 13:48:35,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412043417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:35,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:35,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:35,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151234050] [2024-11-19 13:48:35,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:35,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:35,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:35,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:35,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:35,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-19 13:48:35,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2024-11-19 13:48:35,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:35,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-19 13:48:35,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:36,061 INFO L124 PetriNetUnfolderBase]: 5017/8534 cut-off events. [2024-11-19 13:48:36,062 INFO L125 PetriNetUnfolderBase]: For 736/736 co-relation queries the response was YES. [2024-11-19 13:48:36,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16201 conditions, 8534 events. 5017/8534 cut-off events. For 736/736 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 61244 event pairs, 1094 based on Foata normal form. 192/8365 useless extension candidates. Maximal degree in co-relation 10059. Up to 5120 conditions per place. [2024-11-19 13:48:36,102 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 47 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-11-19 13:48:36,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 258 flow [2024-11-19 13:48:36,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:36,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-11-19 13:48:36,103 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.672316384180791 [2024-11-19 13:48:36,103 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 122 flow. Second operand 3 states and 119 transitions. [2024-11-19 13:48:36,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 258 flow [2024-11-19 13:48:36,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 68 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:36,106 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 120 flow [2024-11-19 13:48:36,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-11-19 13:48:36,108 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2024-11-19 13:48:36,109 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 120 flow [2024-11-19 13:48:36,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2024-11-19 13:48:36,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:36,109 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-19 13:48:36,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 13:48:36,109 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 13:48:36,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:36,109 INFO L85 PathProgramCache]: Analyzing trace with hash 92567865, now seen corresponding path program 1 times [2024-11-19 13:48:36,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:36,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942007605] [2024-11-19 13:48:36,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:36,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:48:36,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 13:48:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:48:36,125 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 13:48:36,125 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 13:48:36,126 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-19 13:48:36,126 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-19 13:48:36,126 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-19 13:48:36,126 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-19 13:48:36,126 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-19 13:48:36,126 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-19 13:48:36,126 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-19 13:48:36,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-19 13:48:36,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-19 13:48:36,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-19 13:48:36,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-19 13:48:36,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-19 13:48:36,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-19 13:48:36,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-19 13:48:36,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-19 13:48:36,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-19 13:48:36,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-19 13:48:36,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 13:48:36,128 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-19 13:48:36,128 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 13:48:36,128 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-19 13:48:36,154 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:48:36,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 77 transitions, 182 flow [2024-11-19 13:48:36,161 INFO L124 PetriNetUnfolderBase]: 8/88 cut-off events. [2024-11-19 13:48:36,161 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-19 13:48:36,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 88 events. 8/88 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 254 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2024-11-19 13:48:36,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 77 transitions, 182 flow [2024-11-19 13:48:36,162 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 77 transitions, 182 flow [2024-11-19 13:48:36,163 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:48:36,163 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@3afb2c63, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:48:36,163 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-19 13:48:36,165 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:48:36,165 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-19 13:48:36,165 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 13:48:36,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:36,165 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 13:48:36,165 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 13:48:36,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:36,165 INFO L85 PathProgramCache]: Analyzing trace with hash 404434531, now seen corresponding path program 1 times [2024-11-19 13:48:36,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:36,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981715418] [2024-11-19 13:48:36,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:36,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:36,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:36,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:36,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981715418] [2024-11-19 13:48:36,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981715418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:36,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:36,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:36,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436193402] [2024-11-19 13:48:36,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:36,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:36,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:36,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:36,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:36,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 77 [2024-11-19 13:48:36,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-19 13:48:36,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:36,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 77 [2024-11-19 13:48:36,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:41,334 INFO L124 PetriNetUnfolderBase]: 56332/84118 cut-off events. [2024-11-19 13:48:41,334 INFO L125 PetriNetUnfolderBase]: For 6419/6419 co-relation queries the response was YES. [2024-11-19 13:48:41,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159450 conditions, 84118 events. 56332/84118 cut-off events. For 6419/6419 co-relation queries the response was YES. Maximal size of possible extension queue 3710. Compared 672684 event pairs, 31380 based on Foata normal form. 7398/87068 useless extension candidates. Maximal degree in co-relation 92390. Up to 57853 conditions per place. [2024-11-19 13:48:41,902 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 67 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2024-11-19 13:48:41,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 100 transitions, 387 flow [2024-11-19 13:48:41,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:41,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:41,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2024-11-19 13:48:41,907 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7445887445887446 [2024-11-19 13:48:41,907 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 182 flow. Second operand 3 states and 172 transitions. [2024-11-19 13:48:41,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 100 transitions, 387 flow [2024-11-19 13:48:41,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 100 transitions, 375 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-19 13:48:41,912 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 168 flow [2024-11-19 13:48:41,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2024-11-19 13:48:41,914 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 0 predicate places. [2024-11-19 13:48:41,915 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 168 flow [2024-11-19 13:48:41,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-19 13:48:41,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:41,915 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 13:48:41,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 13:48:41,915 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 13:48:41,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:41,915 INFO L85 PathProgramCache]: Analyzing trace with hash -347430953, now seen corresponding path program 1 times [2024-11-19 13:48:41,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:41,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275387232] [2024-11-19 13:48:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:41,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:41,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:41,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275387232] [2024-11-19 13:48:41,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275387232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:41,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:41,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:41,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676288984] [2024-11-19 13:48:41,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:41,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:41,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:41,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:41,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:41,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 77 [2024-11-19 13:48:41,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-19 13:48:41,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:41,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 77 [2024-11-19 13:48:41,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:46,343 INFO L124 PetriNetUnfolderBase]: 50073/74907 cut-off events. [2024-11-19 13:48:46,344 INFO L125 PetriNetUnfolderBase]: For 5479/5479 co-relation queries the response was YES. [2024-11-19 13:48:46,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144293 conditions, 74907 events. 50073/74907 cut-off events. For 5479/5479 co-relation queries the response was YES. Maximal size of possible extension queue 3292. Compared 589752 event pairs, 27618 based on Foata normal form. 1755/72634 useless extension candidates. Maximal degree in co-relation 143597. Up to 49839 conditions per place. [2024-11-19 13:48:47,043 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 66 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2024-11-19 13:48:47,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 99 transitions, 375 flow [2024-11-19 13:48:47,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:47,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:47,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2024-11-19 13:48:47,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7012987012987013 [2024-11-19 13:48:47,044 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 168 flow. Second operand 3 states and 162 transitions. [2024-11-19 13:48:47,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 99 transitions, 375 flow [2024-11-19 13:48:47,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 99 transitions, 371 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:47,049 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 166 flow [2024-11-19 13:48:47,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2024-11-19 13:48:47,050 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -1 predicate places. [2024-11-19 13:48:47,050 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 166 flow [2024-11-19 13:48:47,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-19 13:48:47,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:47,050 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:47,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 13:48:47,050 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 13:48:47,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:47,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1078503262, now seen corresponding path program 1 times [2024-11-19 13:48:47,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:47,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630081020] [2024-11-19 13:48:47,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:47,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:47,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 13:48:47,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:47,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630081020] [2024-11-19 13:48:47,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630081020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:47,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:47,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:47,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090366252] [2024-11-19 13:48:47,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:47,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:47,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:47,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:47,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:47,091 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 77 [2024-11-19 13:48:47,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-11-19 13:48:47,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:47,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 77 [2024-11-19 13:48:47,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:51,760 INFO L124 PetriNetUnfolderBase]: 56329/85957 cut-off events. [2024-11-19 13:48:51,761 INFO L125 PetriNetUnfolderBase]: For 6263/6263 co-relation queries the response was YES. [2024-11-19 13:48:51,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164005 conditions, 85957 events. 56329/85957 cut-off events. For 6263/6263 co-relation queries the response was YES. Maximal size of possible extension queue 3509. Compared 728156 event pairs, 9528 based on Foata normal form. 1752/84253 useless extension candidates. Maximal degree in co-relation 120042. Up to 57808 conditions per place. [2024-11-19 13:48:52,277 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 66 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2024-11-19 13:48:52,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 97 transitions, 370 flow [2024-11-19 13:48:52,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:52,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2024-11-19 13:48:52,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7012987012987013 [2024-11-19 13:48:52,279 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 166 flow. Second operand 3 states and 162 transitions. [2024-11-19 13:48:52,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 97 transitions, 370 flow [2024-11-19 13:48:52,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 97 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:52,285 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 164 flow [2024-11-19 13:48:52,285 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2024-11-19 13:48:52,286 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-11-19 13:48:52,286 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 164 flow [2024-11-19 13:48:52,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-11-19 13:48:52,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:52,286 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:52,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 13:48:52,286 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 13:48:52,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:52,287 INFO L85 PathProgramCache]: Analyzing trace with hash -926136755, now seen corresponding path program 1 times [2024-11-19 13:48:52,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:52,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995466523] [2024-11-19 13:48:52,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:52,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 13:48:52,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:52,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995466523] [2024-11-19 13:48:52,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995466523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:52,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:52,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:52,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69025459] [2024-11-19 13:48:52,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:52,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:52,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:52,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:52,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:52,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 77 [2024-11-19 13:48:52,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-11-19 13:48:52,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:52,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 77 [2024-11-19 13:48:52,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:57,119 INFO L124 PetriNetUnfolderBase]: 50073/77955 cut-off events. [2024-11-19 13:48:57,119 INFO L125 PetriNetUnfolderBase]: For 5606/5606 co-relation queries the response was YES. [2024-11-19 13:48:57,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147335 conditions, 77955 events. 50073/77955 cut-off events. For 5606/5606 co-relation queries the response was YES. Maximal size of possible extension queue 3188. Compared 671241 event pairs, 9528 based on Foata normal form. 1752/76364 useless extension candidates. Maximal degree in co-relation 91960. Up to 49800 conditions per place. [2024-11-19 13:48:57,592 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 65 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-11-19 13:48:57,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 96 transitions, 362 flow [2024-11-19 13:48:57,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:57,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:57,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2024-11-19 13:48:57,593 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2024-11-19 13:48:57,593 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 164 flow. Second operand 3 states and 161 transitions. [2024-11-19 13:48:57,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 96 transitions, 362 flow [2024-11-19 13:48:57,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 96 transitions, 358 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:57,604 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 162 flow [2024-11-19 13:48:57,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2024-11-19 13:48:57,604 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -3 predicate places. [2024-11-19 13:48:57,604 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 162 flow [2024-11-19 13:48:57,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-11-19 13:48:57,605 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:57,605 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:57,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 13:48:57,605 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 13:48:57,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:57,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1023214588, now seen corresponding path program 1 times [2024-11-19 13:48:57,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:57,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095481963] [2024-11-19 13:48:57,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:57,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 13:48:57,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:57,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095481963] [2024-11-19 13:48:57,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095481963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:57,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:57,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:57,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078092255] [2024-11-19 13:48:57,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:57,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:57,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:57,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:57,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:57,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 77 [2024-11-19 13:48:57,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-11-19 13:48:57,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:57,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 77 [2024-11-19 13:48:57,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:49:02,322 INFO L124 PetriNetUnfolderBase]: 56281/86072 cut-off events. [2024-11-19 13:49:02,323 INFO L125 PetriNetUnfolderBase]: For 6306/6306 co-relation queries the response was YES. [2024-11-19 13:49:02,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164012 conditions, 86072 events. 56281/86072 cut-off events. For 6306/6306 co-relation queries the response was YES. Maximal size of possible extension queue 3480. Compared 726224 event pairs, 9798 based on Foata normal form. 1728/84331 useless extension candidates. Maximal degree in co-relation 102399. Up to 57280 conditions per place. [2024-11-19 13:49:02,823 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 65 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2024-11-19 13:49:02,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 94 transitions, 357 flow [2024-11-19 13:49:02,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:49:02,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:49:02,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2024-11-19 13:49:02,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2024-11-19 13:49:02,824 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 162 flow. Second operand 3 states and 161 transitions. [2024-11-19 13:49:02,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 94 transitions, 357 flow [2024-11-19 13:49:02,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 94 transitions, 349 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:49:02,831 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 160 flow [2024-11-19 13:49:02,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2024-11-19 13:49:02,831 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -4 predicate places. [2024-11-19 13:49:02,831 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 160 flow [2024-11-19 13:49:02,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-11-19 13:49:02,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:02,832 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:49:02,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 13:49:02,832 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 13:49:02,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:02,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1654880716, now seen corresponding path program 1 times [2024-11-19 13:49:02,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:02,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177224256] [2024-11-19 13:49:02,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:02,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:49:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 13:49:02,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:49:02,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177224256] [2024-11-19 13:49:02,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177224256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:49:02,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:49:02,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:49:02,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498623032] [2024-11-19 13:49:02,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:49:02,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:49:02,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:49:02,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:49:02,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:49:02,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 77 [2024-11-19 13:49:02,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-11-19 13:49:02,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:49:02,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 77 [2024-11-19 13:49:02,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand