./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d 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/weaver/popl20-two-queue.wvr.c -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 2b29a4c23931df07495caab7fd70ec22fec28fcea21b47e1c8eb19fb44a778d8 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:14:57,746 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:14:57,815 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:14:57,822 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:14:57,823 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:14:57,855 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:14:57,857 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:14:57,857 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:14:57,858 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:14:57,859 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:14:57,859 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:14:57,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:14:57,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:14:57,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:14:57,860 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:14:57,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:14:57,861 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:14:57,861 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:14:57,862 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:14:57,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:14:57,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:14:57,863 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:14:57,863 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:14:57,863 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:14:57,864 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:14:57,864 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:14:57,864 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:14:57,864 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:14:57,864 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:14:57,865 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:14:57,865 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:14:57,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:14:57,868 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:14:57,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:14:57,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:14:57,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:14:57,869 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:14:57,869 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:14:57,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:14:57,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:14:57,870 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:14:57,871 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:14:57,871 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:14:57,871 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:14:57,871 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b29a4c23931df07495caab7fd70ec22fec28fcea21b47e1c8eb19fb44a778d8 [2024-11-09 15:14:58,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:14:58,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:14:58,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:14:58,160 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:14:58,160 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:14:58,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2024-11-09 15:14:59,642 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:14:59,829 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:14:59,830 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2024-11-09 15:14:59,837 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0213a0dbf/ea7ffd88cddb446b91dcfc859a22e540/FLAGb6f842959 [2024-11-09 15:15:00,222 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0213a0dbf/ea7ffd88cddb446b91dcfc859a22e540 [2024-11-09 15:15:00,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:15:00,226 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:15:00,227 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:15:00,227 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:15:00,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:15:00,232 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:15:00" (1/1) ... [2024-11-09 15:15:00,233 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a39069c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:15:00, skipping insertion in model container [2024-11-09 15:15:00,233 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:15:00" (1/1) ... [2024-11-09 15:15:00,258 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:15:00,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:15:00,507 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:15:00,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:15:00,545 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:15:00,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:15:00 WrapperNode [2024-11-09 15:15:00,546 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:15:00,547 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:15:00,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:15:00,547 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:15:00,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:15:00" (1/1) ... [2024-11-09 15:15:00,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:15:00" (1/1) ... [2024-11-09 15:15:00,587 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 216 [2024-11-09 15:15:00,588 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:15:00,588 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:15:00,588 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:15:00,588 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:15:00,599 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:15:00" (1/1) ... [2024-11-09 15:15:00,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:15:00" (1/1) ... [2024-11-09 15:15:00,602 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:15:00" (1/1) ... [2024-11-09 15:15:00,619 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-09 15:15:00,619 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:15:00" (1/1) ... [2024-11-09 15:15:00,620 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:15:00" (1/1) ... [2024-11-09 15:15:00,626 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:15:00" (1/1) ... [2024-11-09 15:15:00,630 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:15:00" (1/1) ... [2024-11-09 15:15:00,634 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:15:00" (1/1) ... [2024-11-09 15:15:00,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:15:00" (1/1) ... [2024-11-09 15:15:00,638 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:15:00,639 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:15:00,639 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:15:00,639 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:15:00,641 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:15:00" (1/1) ... [2024-11-09 15:15:00,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:15:00,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:00,676 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) [2024-11-09 15:15:00,680 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 [2024-11-09 15:15:00,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:15:00,729 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:15:00,730 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:15:00,730 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:15:00,730 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:15:00,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:15:00,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:15:00,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:15:00,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:15:00,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 15:15:00,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 15:15:00,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:15:00,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:15:00,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:15:00,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:15:00,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:15:00,735 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:15:00,863 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:15:00,866 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:15:01,256 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:15:01,256 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:15:01,597 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:15:01,597 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 15:15:01,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:15:01 BoogieIcfgContainer [2024-11-09 15:15:01,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:15:01,601 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:15:01,601 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:15:01,604 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:15:01,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:15:00" (1/3) ... [2024-11-09 15:15:01,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d3229a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:15:01, skipping insertion in model container [2024-11-09 15:15:01,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:15:00" (2/3) ... [2024-11-09 15:15:01,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d3229a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:15:01, skipping insertion in model container [2024-11-09 15:15:01,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:15:01" (3/3) ... [2024-11-09 15:15:01,608 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-two-queue.wvr.c [2024-11-09 15:15:01,625 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:15:01,625 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-09 15:15:01,625 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:15:01,685 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 15:15:01,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 50 transitions, 114 flow [2024-11-09 15:15:01,758 INFO L124 PetriNetUnfolderBase]: 4/48 cut-off events. [2024-11-09 15:15:01,759 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 15:15:01,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 48 events. 4/48 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 127 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-09 15:15:01,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 50 transitions, 114 flow [2024-11-09 15:15:01,768 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 46 transitions, 101 flow [2024-11-09 15:15:01,780 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:15:01,790 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;@3f4f5167, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:15:01,791 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-11-09 15:15:01,794 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:15:01,795 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:15:01,795 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:15:01,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:01,796 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:15:01,796 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:01,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:01,803 INFO L85 PathProgramCache]: Analyzing trace with hash 668136, now seen corresponding path program 1 times [2024-11-09 15:15:01,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:01,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688886304] [2024-11-09 15:15:01,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:01,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:02,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:02,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:02,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688886304] [2024-11-09 15:15:02,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688886304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:15:02,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:15:02,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:15:02,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611950027] [2024-11-09 15:15:02,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:15:02,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:15:02,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:02,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:15:02,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:15:02,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-09 15:15:02,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-09 15:15:02,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:02,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-09 15:15:02,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:02,369 INFO L124 PetriNetUnfolderBase]: 213/466 cut-off events. [2024-11-09 15:15:02,373 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 15:15:02,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 466 events. 213/466 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2436 event pairs, 128 based on Foata normal form. 2/342 useless extension candidates. Maximal degree in co-relation 755. Up to 327 conditions per place. [2024-11-09 15:15:02,383 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 20 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2024-11-09 15:15:02,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 141 flow [2024-11-09 15:15:02,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:15:02,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:15:02,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-09 15:15:02,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-09 15:15:02,396 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 101 flow. Second operand 4 states and 96 transitions. [2024-11-09 15:15:02,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 141 flow [2024-11-09 15:15:02,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 136 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:15:02,402 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 96 flow [2024-11-09 15:15:02,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2024-11-09 15:15:02,407 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -6 predicate places. [2024-11-09 15:15:02,408 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 96 flow [2024-11-09 15:15:02,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-09 15:15:02,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:02,408 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-09 15:15:02,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:15:02,409 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:02,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:02,409 INFO L85 PathProgramCache]: Analyzing trace with hash 20712876, now seen corresponding path program 1 times [2024-11-09 15:15:02,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:02,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722184494] [2024-11-09 15:15:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:02,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:02,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:02,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:02,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722184494] [2024-11-09 15:15:02,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722184494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:15:02,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:15:02,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:15:02,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918030219] [2024-11-09 15:15:02,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:15:02,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:15:02,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:02,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:15:02,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:15:02,514 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-09 15:15:02,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-09 15:15:02,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:02,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-09 15:15:02,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:02,695 INFO L124 PetriNetUnfolderBase]: 215/474 cut-off events. [2024-11-09 15:15:02,696 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 15:15:02,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 474 events. 215/474 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2465 event pairs, 128 based on Foata normal form. 2/352 useless extension candidates. Maximal degree in co-relation 795. Up to 336 conditions per place. [2024-11-09 15:15:02,700 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 25 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2024-11-09 15:15:02,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 182 flow [2024-11-09 15:15:02,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:15:02,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:15:02,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-09 15:15:02,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-11-09 15:15:02,704 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 96 flow. Second operand 4 states and 98 transitions. [2024-11-09 15:15:02,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 182 flow [2024-11-09 15:15:02,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 160 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:15:02,707 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 140 flow [2024-11-09 15:15:02,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2024-11-09 15:15:02,708 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2024-11-09 15:15:02,708 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 140 flow [2024-11-09 15:15:02,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-09 15:15:02,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:02,709 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:02,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 15:15:02,710 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:02,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:02,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1428888319, now seen corresponding path program 1 times [2024-11-09 15:15:02,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:02,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692020373] [2024-11-09 15:15:02,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:02,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:02,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:02,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:02,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692020373] [2024-11-09 15:15:02,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692020373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:15:02,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:15:02,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:15:02,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106390980] [2024-11-09 15:15:02,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:15:02,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:15:02,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:02,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:15:02,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:15:02,926 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-09 15:15:02,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-11-09 15:15:02,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:02,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-09 15:15:02,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:03,060 INFO L124 PetriNetUnfolderBase]: 232/522 cut-off events. [2024-11-09 15:15:03,061 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-09 15:15:03,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 949 conditions, 522 events. 232/522 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2749 event pairs, 146 based on Foata normal form. 14/406 useless extension candidates. Maximal degree in co-relation 807. Up to 335 conditions per place. [2024-11-09 15:15:03,066 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 33 selfloop transitions, 4 changer transitions 2/55 dead transitions. [2024-11-09 15:15:03,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 240 flow [2024-11-09 15:15:03,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:15:03,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:15:03,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-09 15:15:03,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-09 15:15:03,070 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 140 flow. Second operand 4 states and 120 transitions. [2024-11-09 15:15:03,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 240 flow [2024-11-09 15:15:03,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:15:03,073 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 157 flow [2024-11-09 15:15:03,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-11-09 15:15:03,074 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places. [2024-11-09 15:15:03,075 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 157 flow [2024-11-09 15:15:03,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-11-09 15:15:03,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:03,075 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:15:03,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 15:15:03,076 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:03,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:03,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1417338175, now seen corresponding path program 1 times [2024-11-09 15:15:03,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:03,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561072480] [2024-11-09 15:15:03,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:03,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:03,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:03,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:03,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561072480] [2024-11-09 15:15:03,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561072480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:03,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001173647] [2024-11-09 15:15:03,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:03,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:03,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:03,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:03,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:15:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:03,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:15:03,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:03,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:03,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:03,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001173647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:03,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:03,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-09 15:15:03,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525068363] [2024-11-09 15:15:03,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:03,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:15:03,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:03,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:15:03,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:15:03,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-09 15:15:03,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 157 flow. Second operand has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 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) [2024-11-09 15:15:03,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:03,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-09 15:15:03,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:03,566 INFO L124 PetriNetUnfolderBase]: 238/546 cut-off events. [2024-11-09 15:15:03,567 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-09 15:15:03,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1113 conditions, 546 events. 238/546 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2967 event pairs, 146 based on Foata normal form. 0/411 useless extension candidates. Maximal degree in co-relation 928. Up to 381 conditions per place. [2024-11-09 15:15:03,572 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 25 selfloop transitions, 25 changer transitions 0/64 dead transitions. [2024-11-09 15:15:03,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 64 transitions, 341 flow [2024-11-09 15:15:03,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:15:03,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:15:03,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 216 transitions. [2024-11-09 15:15:03,574 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.432 [2024-11-09 15:15:03,575 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 157 flow. Second operand 10 states and 216 transitions. [2024-11-09 15:15:03,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 64 transitions, 341 flow [2024-11-09 15:15:03,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:15:03,581 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 319 flow [2024-11-09 15:15:03,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=319, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2024-11-09 15:15:03,582 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2024-11-09 15:15:03,583 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 319 flow [2024-11-09 15:15:03,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 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) [2024-11-09 15:15:03,584 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:03,584 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:03,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 15:15:03,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:03,789 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:03,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:03,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1214008352, now seen corresponding path program 1 times [2024-11-09 15:15:03,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:03,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440315722] [2024-11-09 15:15:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:03,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:03,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:03,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:03,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440315722] [2024-11-09 15:15:03,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440315722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:15:03,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:15:03,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:15:03,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406657857] [2024-11-09 15:15:03,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:15:03,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:15:03,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:03,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:15:03,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:15:03,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-09 15:15:03,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 319 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-09 15:15:03,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:03,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-09 15:15:03,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:04,063 INFO L124 PetriNetUnfolderBase]: 269/651 cut-off events. [2024-11-09 15:15:04,063 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-11-09 15:15:04,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 651 events. 269/651 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3676 event pairs, 174 based on Foata normal form. 14/527 useless extension candidates. Maximal degree in co-relation 1314. Up to 396 conditions per place. [2024-11-09 15:15:04,067 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 65 selfloop transitions, 3 changer transitions 4/88 dead transitions. [2024-11-09 15:15:04,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 595 flow [2024-11-09 15:15:04,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:15:04,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:15:04,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-11-09 15:15:04,068 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615 [2024-11-09 15:15:04,068 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 319 flow. Second operand 4 states and 123 transitions. [2024-11-09 15:15:04,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 595 flow [2024-11-09 15:15:04,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 88 transitions, 501 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-11-09 15:15:04,076 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 270 flow [2024-11-09 15:15:04,076 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2024-11-09 15:15:04,078 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2024-11-09 15:15:04,080 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 270 flow [2024-11-09 15:15:04,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-09 15:15:04,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:04,080 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:04,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:15:04,081 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:04,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:04,081 INFO L85 PathProgramCache]: Analyzing trace with hash 147329721, now seen corresponding path program 1 times [2024-11-09 15:15:04,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:04,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194234418] [2024-11-09 15:15:04,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:04,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:04,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:04,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:04,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194234418] [2024-11-09 15:15:04,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194234418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:04,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538175653] [2024-11-09 15:15:04,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:04,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:04,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:04,196 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:04,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:15:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:04,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:15:04,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:04,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:15:04,296 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:15:04,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538175653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:15:04,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:15:04,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-09 15:15:04,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180245655] [2024-11-09 15:15:04,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:15:04,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:15:04,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:04,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:15:04,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 15:15:04,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-09 15:15:04,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-09 15:15:04,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:04,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-09 15:15:04,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:04,382 INFO L124 PetriNetUnfolderBase]: 204/539 cut-off events. [2024-11-09 15:15:04,383 INFO L125 PetriNetUnfolderBase]: For 132/140 co-relation queries the response was YES. [2024-11-09 15:15:04,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1176 conditions, 539 events. 204/539 cut-off events. For 132/140 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2994 event pairs, 132 based on Foata normal form. 0/461 useless extension candidates. Maximal degree in co-relation 1092. Up to 382 conditions per place. [2024-11-09 15:15:04,386 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 45 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2024-11-09 15:15:04,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 354 flow [2024-11-09 15:15:04,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:15:04,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:15:04,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-09 15:15:04,387 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-11-09 15:15:04,387 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 270 flow. Second operand 3 states and 84 transitions. [2024-11-09 15:15:04,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 354 flow [2024-11-09 15:15:04,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 342 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-09 15:15:04,394 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 252 flow [2024-11-09 15:15:04,394 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2024-11-09 15:15:04,395 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2024-11-09 15:15:04,395 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 252 flow [2024-11-09 15:15:04,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-09 15:15:04,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:04,395 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:04,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 15:15:04,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 15:15:04,596 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:04,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:04,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1655825365, now seen corresponding path program 1 times [2024-11-09 15:15:04,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:04,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638818294] [2024-11-09 15:15:04,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:04,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:04,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:04,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:04,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638818294] [2024-11-09 15:15:04,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638818294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:04,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419551471] [2024-11-09 15:15:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:04,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:04,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:04,768 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:04,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:15:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:04,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:15:04,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:04,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:15:04,881 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:15:04,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419551471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:15:04,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:15:04,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-09 15:15:04,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399482671] [2024-11-09 15:15:04,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:15:04,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:15:04,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:04,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:15:04,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 15:15:04,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-09 15:15:04,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-11-09 15:15:04,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:04,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-09 15:15:04,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:04,948 INFO L124 PetriNetUnfolderBase]: 150/435 cut-off events. [2024-11-09 15:15:04,948 INFO L125 PetriNetUnfolderBase]: For 113/116 co-relation queries the response was YES. [2024-11-09 15:15:04,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 435 events. 150/435 cut-off events. For 113/116 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2312 event pairs, 96 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 912. Up to 298 conditions per place. [2024-11-09 15:15:04,951 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 42 selfloop transitions, 1 changer transitions 1/60 dead transitions. [2024-11-09 15:15:04,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 332 flow [2024-11-09 15:15:04,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:15:04,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:15:04,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-11-09 15:15:04,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2024-11-09 15:15:04,952 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 252 flow. Second operand 3 states and 82 transitions. [2024-11-09 15:15:04,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 332 flow [2024-11-09 15:15:04,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:15:04,955 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 238 flow [2024-11-09 15:15:04,955 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2024-11-09 15:15:04,956 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2024-11-09 15:15:04,956 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 238 flow [2024-11-09 15:15:04,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-11-09 15:15:04,957 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:04,957 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-09 15:15:04,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:15:05,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:05,158 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:05,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:05,158 INFO L85 PathProgramCache]: Analyzing trace with hash 731807084, now seen corresponding path program 2 times [2024-11-09 15:15:05,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:05,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033658953] [2024-11-09 15:15:05,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:05,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:05,295 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:05,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:05,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033658953] [2024-11-09 15:15:05,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033658953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:05,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649375694] [2024-11-09 15:15:05,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:15:05,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:05,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:05,298 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:05,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:15:05,364 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:15:05,364 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:15:05,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:15:05,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:05,414 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:15:05,414 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:05,444 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:15:05,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649375694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:05,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:05,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-09 15:15:05,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20724632] [2024-11-09 15:15:05,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:05,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 15:15:05,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:05,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 15:15:05,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-09 15:15:05,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-09 15:15:05,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 238 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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) [2024-11-09 15:15:05,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:05,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-09 15:15:05,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:05,807 INFO L124 PetriNetUnfolderBase]: 132/378 cut-off events. [2024-11-09 15:15:05,808 INFO L125 PetriNetUnfolderBase]: For 158/161 co-relation queries the response was YES. [2024-11-09 15:15:05,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 378 events. 132/378 cut-off events. For 158/161 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1889 event pairs, 75 based on Foata normal form. 4/349 useless extension candidates. Maximal degree in co-relation 800. Up to 217 conditions per place. [2024-11-09 15:15:05,810 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 17 selfloop transitions, 33 changer transitions 0/64 dead transitions. [2024-11-09 15:15:05,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 64 transitions, 357 flow [2024-11-09 15:15:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 15:15:05,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 15:15:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 437 transitions. [2024-11-09 15:15:05,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3641666666666667 [2024-11-09 15:15:05,812 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 238 flow. Second operand 24 states and 437 transitions. [2024-11-09 15:15:05,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 64 transitions, 357 flow [2024-11-09 15:15:05,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 64 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:15:05,815 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 335 flow [2024-11-09 15:15:05,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=335, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2024-11-09 15:15:05,816 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 31 predicate places. [2024-11-09 15:15:05,816 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 335 flow [2024-11-09 15:15:05,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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) [2024-11-09 15:15:05,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:05,817 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:05,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 15:15:06,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:06,018 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:06,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:06,018 INFO L85 PathProgramCache]: Analyzing trace with hash -756417951, now seen corresponding path program 1 times [2024-11-09 15:15:06,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:06,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549037532] [2024-11-09 15:15:06,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:06,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:15:06,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:06,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549037532] [2024-11-09 15:15:06,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549037532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:15:06,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:15:06,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:15:06,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929235193] [2024-11-09 15:15:06,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:15:06,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:15:06,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:06,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:15:06,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:15:06,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-09 15:15:06,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-09 15:15:06,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:06,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-09 15:15:06,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:06,133 INFO L124 PetriNetUnfolderBase]: 122/345 cut-off events. [2024-11-09 15:15:06,134 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-11-09 15:15:06,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 345 events. 122/345 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1620 event pairs, 40 based on Foata normal form. 6/325 useless extension candidates. Maximal degree in co-relation 810. Up to 124 conditions per place. [2024-11-09 15:15:06,136 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 52 selfloop transitions, 2 changer transitions 1/70 dead transitions. [2024-11-09 15:15:06,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 70 transitions, 462 flow [2024-11-09 15:15:06,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:15:06,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:15:06,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-11-09 15:15:06,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-11-09 15:15:06,137 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 335 flow. Second operand 3 states and 87 transitions. [2024-11-09 15:15:06,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 70 transitions, 462 flow [2024-11-09 15:15:06,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 365 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-11-09 15:15:06,141 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 252 flow [2024-11-09 15:15:06,141 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-11-09 15:15:06,143 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 22 predicate places. [2024-11-09 15:15:06,143 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 252 flow [2024-11-09 15:15:06,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-09 15:15:06,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:06,144 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:06,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 15:15:06,144 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:06,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:06,145 INFO L85 PathProgramCache]: Analyzing trace with hash -2063574928, now seen corresponding path program 1 times [2024-11-09 15:15:06,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:06,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136609797] [2024-11-09 15:15:06,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:06,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:15:06,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:06,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136609797] [2024-11-09 15:15:06,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136609797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:15:06,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:15:06,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:15:06,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778824418] [2024-11-09 15:15:06,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:15:06,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:15:06,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:06,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:15:06,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:15:06,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-09 15:15:06,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-11-09 15:15:06,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:06,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-09 15:15:06,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:06,266 INFO L124 PetriNetUnfolderBase]: 104/305 cut-off events. [2024-11-09 15:15:06,266 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-11-09 15:15:06,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 305 events. 104/305 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1293 event pairs, 42 based on Foata normal form. 5/292 useless extension candidates. Maximal degree in co-relation 708. Up to 117 conditions per place. [2024-11-09 15:15:06,268 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 53 selfloop transitions, 2 changer transitions 3/73 dead transitions. [2024-11-09 15:15:06,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 73 transitions, 394 flow [2024-11-09 15:15:06,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:15:06,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:15:06,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-09 15:15:06,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5933333333333334 [2024-11-09 15:15:06,269 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 252 flow. Second operand 3 states and 89 transitions. [2024-11-09 15:15:06,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 73 transitions, 394 flow [2024-11-09 15:15:06,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 73 transitions, 387 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 15:15:06,271 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 260 flow [2024-11-09 15:15:06,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2024-11-09 15:15:06,272 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 24 predicate places. [2024-11-09 15:15:06,273 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 260 flow [2024-11-09 15:15:06,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-11-09 15:15:06,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:06,273 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-11-09 15:15:06,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 15:15:06,273 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:06,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:06,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1733778148, now seen corresponding path program 1 times [2024-11-09 15:15:06,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:06,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063005448] [2024-11-09 15:15:06,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:06,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:06,451 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:06,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:06,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063005448] [2024-11-09 15:15:06,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063005448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:06,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854781343] [2024-11-09 15:15:06,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:06,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:06,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:06,454 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:06,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:15:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:06,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 15:15:06,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:06,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:06,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854781343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:06,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:06,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-09 15:15:06,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591893358] [2024-11-09 15:15:06,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:06,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 15:15:06,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:06,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 15:15:06,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-09 15:15:06,879 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-09 15:15:06,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 260 flow. Second operand has 28 states, 28 states have (on average 17.071428571428573) internal successors, (478), 28 states have internal predecessors, (478), 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) [2024-11-09 15:15:06,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:06,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-09 15:15:06,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:07,231 INFO L124 PetriNetUnfolderBase]: 125/393 cut-off events. [2024-11-09 15:15:07,232 INFO L125 PetriNetUnfolderBase]: For 491/491 co-relation queries the response was YES. [2024-11-09 15:15:07,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 393 events. 125/393 cut-off events. For 491/491 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1675 event pairs, 72 based on Foata normal form. 14/374 useless extension candidates. Maximal degree in co-relation 994. Up to 206 conditions per place. [2024-11-09 15:15:07,234 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 22 selfloop transitions, 72 changer transitions 0/108 dead transitions. [2024-11-09 15:15:07,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 108 transitions, 658 flow [2024-11-09 15:15:07,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 15:15:07,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-09 15:15:07,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 515 transitions. [2024-11-09 15:15:07,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39615384615384613 [2024-11-09 15:15:07,237 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 260 flow. Second operand 26 states and 515 transitions. [2024-11-09 15:15:07,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 108 transitions, 658 flow [2024-11-09 15:15:07,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 108 transitions, 650 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-09 15:15:07,261 INFO L231 Difference]: Finished difference. Result has 103 places, 108 transitions, 658 flow [2024-11-09 15:15:07,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=658, PETRI_PLACES=103, PETRI_TRANSITIONS=108} [2024-11-09 15:15:07,262 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 54 predicate places. [2024-11-09 15:15:07,262 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 108 transitions, 658 flow [2024-11-09 15:15:07,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 17.071428571428573) internal successors, (478), 28 states have internal predecessors, (478), 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) [2024-11-09 15:15:07,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:07,263 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:07,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 15:15:07,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 15:15:07,467 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:07,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:07,467 INFO L85 PathProgramCache]: Analyzing trace with hash -755873469, now seen corresponding path program 1 times [2024-11-09 15:15:07,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:07,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715841757] [2024-11-09 15:15:07,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:07,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:15:07,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:07,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715841757] [2024-11-09 15:15:07,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715841757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:07,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604045571] [2024-11-09 15:15:07,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:07,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:07,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:07,965 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:07,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:15:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:08,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 15:15:08,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:08,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 15:15:08,467 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 15:15:08,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-09 15:15:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:15:08,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:08,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-09 15:15:08,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-09 15:15:08,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:15:08,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604045571] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:08,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:08,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-11-09 15:15:08,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038623724] [2024-11-09 15:15:08,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:08,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 15:15:08,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:08,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 15:15:08,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2024-11-09 15:15:09,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-11-09 15:15:09,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 108 transitions, 658 flow. Second operand has 24 states, 24 states have (on average 13.791666666666666) internal successors, (331), 24 states have internal predecessors, (331), 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) [2024-11-09 15:15:09,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:09,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-11-09 15:15:09,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:10,208 INFO L124 PetriNetUnfolderBase]: 377/874 cut-off events. [2024-11-09 15:15:10,208 INFO L125 PetriNetUnfolderBase]: For 622/622 co-relation queries the response was YES. [2024-11-09 15:15:10,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 874 events. 377/874 cut-off events. For 622/622 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4567 event pairs, 63 based on Foata normal form. 0/818 useless extension candidates. Maximal degree in co-relation 2209. Up to 134 conditions per place. [2024-11-09 15:15:10,213 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 103 selfloop transitions, 81 changer transitions 11/205 dead transitions. [2024-11-09 15:15:10,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 205 transitions, 1330 flow [2024-11-09 15:15:10,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 15:15:10,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-09 15:15:10,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 372 transitions. [2024-11-09 15:15:10,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.372 [2024-11-09 15:15:10,215 INFO L175 Difference]: Start difference. First operand has 103 places, 108 transitions, 658 flow. Second operand 20 states and 372 transitions. [2024-11-09 15:15:10,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 205 transitions, 1330 flow [2024-11-09 15:15:10,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 205 transitions, 1145 flow, removed 54 selfloop flow, removed 12 redundant places. [2024-11-09 15:15:10,222 INFO L231 Difference]: Finished difference. Result has 113 places, 119 transitions, 682 flow [2024-11-09 15:15:10,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=682, PETRI_PLACES=113, PETRI_TRANSITIONS=119} [2024-11-09 15:15:10,223 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 64 predicate places. [2024-11-09 15:15:10,223 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 119 transitions, 682 flow [2024-11-09 15:15:10,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 13.791666666666666) internal successors, (331), 24 states have internal predecessors, (331), 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) [2024-11-09 15:15:10,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:10,223 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:10,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 15:15:10,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:10,428 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:10,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:10,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1551120531, now seen corresponding path program 1 times [2024-11-09 15:15:10,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:10,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688850105] [2024-11-09 15:15:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:10,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:11,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:11,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688850105] [2024-11-09 15:15:11,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688850105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:11,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051783754] [2024-11-09 15:15:11,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:11,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:11,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:11,043 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:11,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 15:15:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:11,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 15:15:11,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:11,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-09 15:15:11,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:15:11,247 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:15:11,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051783754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:15:11,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:15:11,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2024-11-09 15:15:11,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975298043] [2024-11-09 15:15:11,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:15:11,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:15:11,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:11,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:15:11,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-09 15:15:11,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-11-09 15:15:11,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 119 transitions, 682 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-11-09 15:15:11,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:11,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-11-09 15:15:11,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:11,499 INFO L124 PetriNetUnfolderBase]: 495/1129 cut-off events. [2024-11-09 15:15:11,500 INFO L125 PetriNetUnfolderBase]: For 951/975 co-relation queries the response was YES. [2024-11-09 15:15:11,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3020 conditions, 1129 events. 495/1129 cut-off events. For 951/975 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 6188 event pairs, 84 based on Foata normal form. 16/1096 useless extension candidates. Maximal degree in co-relation 2991. Up to 320 conditions per place. [2024-11-09 15:15:11,507 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 143 selfloop transitions, 7 changer transitions 5/172 dead transitions. [2024-11-09 15:15:11,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 172 transitions, 1211 flow [2024-11-09 15:15:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:15:11,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:15:11,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-11-09 15:15:11,509 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-11-09 15:15:11,509 INFO L175 Difference]: Start difference. First operand has 113 places, 119 transitions, 682 flow. Second operand 7 states and 180 transitions. [2024-11-09 15:15:11,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 172 transitions, 1211 flow [2024-11-09 15:15:11,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 172 transitions, 1182 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 15:15:11,519 INFO L231 Difference]: Finished difference. Result has 116 places, 124 transitions, 703 flow [2024-11-09 15:15:11,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=703, PETRI_PLACES=116, PETRI_TRANSITIONS=124} [2024-11-09 15:15:11,519 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 67 predicate places. [2024-11-09 15:15:11,520 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 124 transitions, 703 flow [2024-11-09 15:15:11,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-11-09 15:15:11,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:11,520 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:11,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 15:15:11,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:11,721 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:11,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:11,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1957671331, now seen corresponding path program 1 times [2024-11-09 15:15:11,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:11,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395482802] [2024-11-09 15:15:11,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:11,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:12,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:15:12,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:12,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395482802] [2024-11-09 15:15:12,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395482802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:12,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040004505] [2024-11-09 15:15:12,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:12,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:12,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:12,160 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:12,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 15:15:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:12,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 15:15:12,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:12,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 15:15:12,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 15:15:12,378 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 15:15:12,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 15:15:12,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 15:15:12,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 15:15:12,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:12,547 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:13,133 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:15:13,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2024-11-09 15:15:13,150 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:15:13,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 54 [2024-11-09 15:15:13,168 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:15:13,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2024-11-09 15:15:13,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:13,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040004505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:13,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:13,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 23 [2024-11-09 15:15:13,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218341495] [2024-11-09 15:15:13,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:13,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 15:15:13,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:13,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 15:15:13,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=512, Unknown=2, NotChecked=0, Total=600 [2024-11-09 15:15:13,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 50 [2024-11-09 15:15:13,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 124 transitions, 703 flow. Second operand has 25 states, 25 states have (on average 9.4) internal successors, (235), 25 states have internal predecessors, (235), 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) [2024-11-09 15:15:13,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:13,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 50 [2024-11-09 15:15:13,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:17,002 INFO L124 PetriNetUnfolderBase]: 2741/5152 cut-off events. [2024-11-09 15:15:17,003 INFO L125 PetriNetUnfolderBase]: For 3966/4064 co-relation queries the response was YES. [2024-11-09 15:15:17,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14450 conditions, 5152 events. 2741/5152 cut-off events. For 3966/4064 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 32873 event pairs, 371 based on Foata normal form. 154/4786 useless extension candidates. Maximal degree in co-relation 14418. Up to 1178 conditions per place. [2024-11-09 15:15:17,052 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 399 selfloop transitions, 161 changer transitions 35/603 dead transitions. [2024-11-09 15:15:17,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 603 transitions, 3948 flow [2024-11-09 15:15:17,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-09 15:15:17,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-09 15:15:17,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 694 transitions. [2024-11-09 15:15:17,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3017391304347826 [2024-11-09 15:15:17,058 INFO L175 Difference]: Start difference. First operand has 116 places, 124 transitions, 703 flow. Second operand 46 states and 694 transitions. [2024-11-09 15:15:17,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 603 transitions, 3948 flow [2024-11-09 15:15:17,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 603 transitions, 3944 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:15:17,088 INFO L231 Difference]: Finished difference. Result has 185 places, 260 transitions, 2219 flow [2024-11-09 15:15:17,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=2219, PETRI_PLACES=185, PETRI_TRANSITIONS=260} [2024-11-09 15:15:17,090 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 136 predicate places. [2024-11-09 15:15:17,090 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 260 transitions, 2219 flow [2024-11-09 15:15:17,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.4) internal successors, (235), 25 states have internal predecessors, (235), 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) [2024-11-09 15:15:17,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:17,092 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:17,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 15:15:17,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 15:15:17,293 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:17,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:17,294 INFO L85 PathProgramCache]: Analyzing trace with hash -138230339, now seen corresponding path program 1 times [2024-11-09 15:15:17,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:17,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656930973] [2024-11-09 15:15:17,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:17,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:17,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:15:17,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:17,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656930973] [2024-11-09 15:15:17,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656930973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:17,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085403306] [2024-11-09 15:15:17,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:17,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:17,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:17,692 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:17,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 15:15:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:17,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 15:15:17,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:17,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 15:15:17,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 15:15:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:15:18,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:18,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2024-11-09 15:15:18,229 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:15:18,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 42 [2024-11-09 15:15:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:15:18,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085403306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:18,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:18,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-09 15:15:18,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734607333] [2024-11-09 15:15:18,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:18,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 15:15:18,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:18,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 15:15:18,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-11-09 15:15:18,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-11-09 15:15:18,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 260 transitions, 2219 flow. Second operand has 26 states, 26 states have (on average 14.73076923076923) internal successors, (383), 26 states have internal predecessors, (383), 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) [2024-11-09 15:15:18,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:18,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-11-09 15:15:18,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:20,920 INFO L124 PetriNetUnfolderBase]: 3226/6873 cut-off events. [2024-11-09 15:15:20,921 INFO L125 PetriNetUnfolderBase]: For 48967/49245 co-relation queries the response was YES. [2024-11-09 15:15:20,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28428 conditions, 6873 events. 3226/6873 cut-off events. For 48967/49245 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 55308 event pairs, 241 based on Foata normal form. 361/7169 useless extension candidates. Maximal degree in co-relation 28370. Up to 1227 conditions per place. [2024-11-09 15:15:20,992 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 333 selfloop transitions, 272 changer transitions 8/641 dead transitions. [2024-11-09 15:15:20,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 641 transitions, 6387 flow [2024-11-09 15:15:20,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 15:15:20,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-09 15:15:20,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 723 transitions. [2024-11-09 15:15:20,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38052631578947366 [2024-11-09 15:15:20,995 INFO L175 Difference]: Start difference. First operand has 185 places, 260 transitions, 2219 flow. Second operand 38 states and 723 transitions. [2024-11-09 15:15:20,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 641 transitions, 6387 flow [2024-11-09 15:15:21,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 641 transitions, 6126 flow, removed 126 selfloop flow, removed 4 redundant places. [2024-11-09 15:15:21,084 INFO L231 Difference]: Finished difference. Result has 228 places, 457 transitions, 4790 flow [2024-11-09 15:15:21,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4790, PETRI_PLACES=228, PETRI_TRANSITIONS=457} [2024-11-09 15:15:21,085 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 179 predicate places. [2024-11-09 15:15:21,085 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 457 transitions, 4790 flow [2024-11-09 15:15:21,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.73076923076923) internal successors, (383), 26 states have internal predecessors, (383), 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) [2024-11-09 15:15:21,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:21,086 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:21,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 15:15:21,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 15:15:21,287 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:21,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:21,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1515227615, now seen corresponding path program 2 times [2024-11-09 15:15:21,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:21,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610301965] [2024-11-09 15:15:21,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:21,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:23,082 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:23,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:23,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610301965] [2024-11-09 15:15:23,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610301965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:23,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367109529] [2024-11-09 15:15:23,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:15:23,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:23,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:23,085 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:23,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 15:15:23,190 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:15:23,190 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:15:23,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 15:15:23,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:23,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-09 15:15:23,322 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 15:15:23,322 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:15:23,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367109529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:15:23,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:15:23,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 18 [2024-11-09 15:15:23,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59854383] [2024-11-09 15:15:23,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:15:23,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:15:23,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:23,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:15:23,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2024-11-09 15:15:23,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-11-09 15:15:23,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 457 transitions, 4790 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-11-09 15:15:23,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:23,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-11-09 15:15:23,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:24,626 INFO L124 PetriNetUnfolderBase]: 3474/7473 cut-off events. [2024-11-09 15:15:24,626 INFO L125 PetriNetUnfolderBase]: For 79070/79454 co-relation queries the response was YES. [2024-11-09 15:15:24,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36343 conditions, 7473 events. 3474/7473 cut-off events. For 79070/79454 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 61804 event pairs, 529 based on Foata normal form. 243/7663 useless extension candidates. Maximal degree in co-relation 36274. Up to 2431 conditions per place. [2024-11-09 15:15:24,706 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 425 selfloop transitions, 100 changer transitions 4/558 dead transitions. [2024-11-09 15:15:24,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 558 transitions, 6820 flow [2024-11-09 15:15:24,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:15:24,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:15:24,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-11-09 15:15:24,708 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5228571428571429 [2024-11-09 15:15:24,708 INFO L175 Difference]: Start difference. First operand has 228 places, 457 transitions, 4790 flow. Second operand 7 states and 183 transitions. [2024-11-09 15:15:24,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 558 transitions, 6820 flow [2024-11-09 15:15:25,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 558 transitions, 6319 flow, removed 186 selfloop flow, removed 11 redundant places. [2024-11-09 15:15:25,029 INFO L231 Difference]: Finished difference. Result has 221 places, 449 transitions, 4573 flow [2024-11-09 15:15:25,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4173, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4573, PETRI_PLACES=221, PETRI_TRANSITIONS=449} [2024-11-09 15:15:25,031 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 172 predicate places. [2024-11-09 15:15:25,031 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 449 transitions, 4573 flow [2024-11-09 15:15:25,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-11-09 15:15:25,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:25,031 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:25,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 15:15:25,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 15:15:25,232 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:25,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:25,233 INFO L85 PathProgramCache]: Analyzing trace with hash 2046179802, now seen corresponding path program 1 times [2024-11-09 15:15:25,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:25,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146123380] [2024-11-09 15:15:25,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:25,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:15:25,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:25,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146123380] [2024-11-09 15:15:25,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146123380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:25,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248831001] [2024-11-09 15:15:25,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:25,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:25,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:25,568 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:25,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 15:15:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:25,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 15:15:25,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:25,785 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:15:25,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:25,896 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:15:25,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248831001] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:25,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:25,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-09 15:15:25,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208526676] [2024-11-09 15:15:25,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:25,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 15:15:25,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:25,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 15:15:25,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-09 15:15:25,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-09 15:15:25,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 449 transitions, 4573 flow. Second operand has 15 states, 15 states have (on average 18.266666666666666) internal successors, (274), 15 states have internal predecessors, (274), 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) [2024-11-09 15:15:25,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:25,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-09 15:15:25,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:26,891 INFO L124 PetriNetUnfolderBase]: 1986/4847 cut-off events. [2024-11-09 15:15:26,892 INFO L125 PetriNetUnfolderBase]: For 57573/57989 co-relation queries the response was YES. [2024-11-09 15:15:26,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22973 conditions, 4847 events. 1986/4847 cut-off events. For 57573/57989 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 40375 event pairs, 837 based on Foata normal form. 231/4999 useless extension candidates. Maximal degree in co-relation 22906. Up to 2022 conditions per place. [2024-11-09 15:15:26,936 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 336 selfloop transitions, 64 changer transitions 3/443 dead transitions. [2024-11-09 15:15:26,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 443 transitions, 5232 flow [2024-11-09 15:15:26,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 15:15:26,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 15:15:26,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 249 transitions. [2024-11-09 15:15:26,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.415 [2024-11-09 15:15:26,938 INFO L175 Difference]: Start difference. First operand has 221 places, 449 transitions, 4573 flow. Second operand 12 states and 249 transitions. [2024-11-09 15:15:26,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 443 transitions, 5232 flow [2024-11-09 15:15:27,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 443 transitions, 5087 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-11-09 15:15:27,105 INFO L231 Difference]: Finished difference. Result has 220 places, 375 transitions, 3819 flow [2024-11-09 15:15:27,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3688, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3819, PETRI_PLACES=220, PETRI_TRANSITIONS=375} [2024-11-09 15:15:27,106 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 171 predicate places. [2024-11-09 15:15:27,106 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 375 transitions, 3819 flow [2024-11-09 15:15:27,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.266666666666666) internal successors, (274), 15 states have internal predecessors, (274), 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) [2024-11-09 15:15:27,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:27,106 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:27,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 15:15:27,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 15:15:27,307 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:27,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:27,307 INFO L85 PathProgramCache]: Analyzing trace with hash -369533526, now seen corresponding path program 2 times [2024-11-09 15:15:27,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:27,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136501386] [2024-11-09 15:15:27,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:27,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:28,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:15:28,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:28,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136501386] [2024-11-09 15:15:28,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136501386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:28,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456348004] [2024-11-09 15:15:28,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:15:28,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:28,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:28,080 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:28,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 15:15:28,165 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:15:28,165 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:15:28,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 15:15:28,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:28,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-09 15:15:28,314 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 15:15:28,314 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:15:28,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456348004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:15:28,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:15:28,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 13 [2024-11-09 15:15:28,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451722632] [2024-11-09 15:15:28,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:15:28,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:15:28,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:28,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:15:28,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-09 15:15:28,336 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-11-09 15:15:28,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 375 transitions, 3819 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-11-09 15:15:28,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:28,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-11-09 15:15:28,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:29,016 INFO L124 PetriNetUnfolderBase]: 2405/5352 cut-off events. [2024-11-09 15:15:29,017 INFO L125 PetriNetUnfolderBase]: For 54031/54177 co-relation queries the response was YES. [2024-11-09 15:15:29,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24970 conditions, 5352 events. 2405/5352 cut-off events. For 54031/54177 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 42303 event pairs, 305 based on Foata normal form. 122/5414 useless extension candidates. Maximal degree in co-relation 24904. Up to 2696 conditions per place. [2024-11-09 15:15:29,064 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 348 selfloop transitions, 64 changer transitions 5/443 dead transitions. [2024-11-09 15:15:29,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 443 transitions, 5658 flow [2024-11-09 15:15:29,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:15:29,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:15:29,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-11-09 15:15:29,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 15:15:29,065 INFO L175 Difference]: Start difference. First operand has 220 places, 375 transitions, 3819 flow. Second operand 7 states and 175 transitions. [2024-11-09 15:15:29,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 443 transitions, 5658 flow [2024-11-09 15:15:29,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 443 transitions, 5517 flow, removed 41 selfloop flow, removed 10 redundant places. [2024-11-09 15:15:29,289 INFO L231 Difference]: Finished difference. Result has 216 places, 374 transitions, 3856 flow [2024-11-09 15:15:29,289 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3728, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3856, PETRI_PLACES=216, PETRI_TRANSITIONS=374} [2024-11-09 15:15:29,290 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 167 predicate places. [2024-11-09 15:15:29,290 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 374 transitions, 3856 flow [2024-11-09 15:15:29,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-11-09 15:15:29,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:29,290 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:29,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 15:15:29,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 15:15:29,491 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:29,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:29,491 INFO L85 PathProgramCache]: Analyzing trace with hash 2067056519, now seen corresponding path program 1 times [2024-11-09 15:15:29,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:29,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663542559] [2024-11-09 15:15:29,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:29,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:15:29,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:29,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663542559] [2024-11-09 15:15:29,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663542559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:29,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896048110] [2024-11-09 15:15:29,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:29,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:29,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:29,637 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:29,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 15:15:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:29,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 15:15:29,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:29,821 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:15:29,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:29,932 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:15:29,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896048110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:29,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:29,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 15:15:29,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142481539] [2024-11-09 15:15:29,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:29,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 15:15:29,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:29,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 15:15:29,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-09 15:15:29,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-09 15:15:29,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 374 transitions, 3856 flow. Second operand has 15 states, 15 states have (on average 18.733333333333334) internal successors, (281), 15 states have internal predecessors, (281), 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) [2024-11-09 15:15:29,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:29,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-09 15:15:29,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:30,703 INFO L124 PetriNetUnfolderBase]: 1585/4044 cut-off events. [2024-11-09 15:15:30,703 INFO L125 PetriNetUnfolderBase]: For 38562/38803 co-relation queries the response was YES. [2024-11-09 15:15:30,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18740 conditions, 4044 events. 1585/4044 cut-off events. For 38562/38803 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 32760 event pairs, 748 based on Foata normal form. 118/4094 useless extension candidates. Maximal degree in co-relation 18676. Up to 1923 conditions per place. [2024-11-09 15:15:30,744 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 209 selfloop transitions, 99 changer transitions 24/371 dead transitions. [2024-11-09 15:15:30,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 371 transitions, 4476 flow [2024-11-09 15:15:30,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 15:15:30,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 15:15:30,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-11-09 15:15:30,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-09 15:15:30,746 INFO L175 Difference]: Start difference. First operand has 216 places, 374 transitions, 3856 flow. Second operand 8 states and 175 transitions. [2024-11-09 15:15:30,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 371 transitions, 4476 flow [2024-11-09 15:15:30,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 371 transitions, 4376 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-11-09 15:15:30,864 INFO L231 Difference]: Finished difference. Result has 220 places, 327 transitions, 3520 flow [2024-11-09 15:15:30,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3474, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3520, PETRI_PLACES=220, PETRI_TRANSITIONS=327} [2024-11-09 15:15:30,864 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 171 predicate places. [2024-11-09 15:15:30,864 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 327 transitions, 3520 flow [2024-11-09 15:15:30,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.733333333333334) internal successors, (281), 15 states have internal predecessors, (281), 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) [2024-11-09 15:15:30,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:30,865 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:30,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 15:15:31,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:31,066 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:31,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:31,066 INFO L85 PathProgramCache]: Analyzing trace with hash 442907941, now seen corresponding path program 2 times [2024-11-09 15:15:31,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:31,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198601155] [2024-11-09 15:15:31,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:31,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:31,222 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:15:31,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:31,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198601155] [2024-11-09 15:15:31,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198601155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:31,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611346059] [2024-11-09 15:15:31,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:15:31,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:31,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:31,225 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:31,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 15:15:31,330 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 15:15:31,330 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:15:31,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 15:15:31,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:15:31,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:31,766 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:15:31,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611346059] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:31,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:31,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2024-11-09 15:15:31,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000654299] [2024-11-09 15:15:31,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:31,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 15:15:31,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:31,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 15:15:31,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2024-11-09 15:15:31,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-09 15:15:31,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 327 transitions, 3520 flow. Second operand has 21 states, 21 states have (on average 18.285714285714285) internal successors, (384), 21 states have internal predecessors, (384), 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) [2024-11-09 15:15:31,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:31,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-09 15:15:31,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:32,635 INFO L124 PetriNetUnfolderBase]: 1298/3285 cut-off events. [2024-11-09 15:15:32,635 INFO L125 PetriNetUnfolderBase]: For 29347/29545 co-relation queries the response was YES. [2024-11-09 15:15:32,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15254 conditions, 3285 events. 1298/3285 cut-off events. For 29347/29545 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 25192 event pairs, 321 based on Foata normal form. 76/3311 useless extension candidates. Maximal degree in co-relation 15189. Up to 1709 conditions per place. [2024-11-09 15:15:32,665 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 156 selfloop transitions, 99 changer transitions 55/343 dead transitions. [2024-11-09 15:15:32,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 343 transitions, 4152 flow [2024-11-09 15:15:32,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 15:15:32,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 15:15:32,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 238 transitions. [2024-11-09 15:15:32,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43272727272727274 [2024-11-09 15:15:32,666 INFO L175 Difference]: Start difference. First operand has 220 places, 327 transitions, 3520 flow. Second operand 11 states and 238 transitions. [2024-11-09 15:15:32,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 343 transitions, 4152 flow [2024-11-09 15:15:32,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 343 transitions, 3918 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-11-09 15:15:32,757 INFO L231 Difference]: Finished difference. Result has 220 places, 283 transitions, 3036 flow [2024-11-09 15:15:32,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3116, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3036, PETRI_PLACES=220, PETRI_TRANSITIONS=283} [2024-11-09 15:15:32,758 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 171 predicate places. [2024-11-09 15:15:32,759 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 283 transitions, 3036 flow [2024-11-09 15:15:32,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.285714285714285) internal successors, (384), 21 states have internal predecessors, (384), 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) [2024-11-09 15:15:32,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:32,759 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:32,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 15:15:32,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:32,960 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:32,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:32,960 INFO L85 PathProgramCache]: Analyzing trace with hash 755845743, now seen corresponding path program 2 times [2024-11-09 15:15:32,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:32,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272409474] [2024-11-09 15:15:32,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:32,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:15:33,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:33,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272409474] [2024-11-09 15:15:33,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272409474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:33,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736289195] [2024-11-09 15:15:33,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:15:33,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:33,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:33,122 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:33,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 15:15:33,228 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 15:15:33,228 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:15:33,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 15:15:33,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:15:33,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:15:33,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736289195] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:33,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:33,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-09 15:15:33,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325330483] [2024-11-09 15:15:33,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:33,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 15:15:33,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:33,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 15:15:33,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-09 15:15:33,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-09 15:15:33,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 283 transitions, 3036 flow. Second operand has 15 states, 15 states have (on average 18.333333333333332) internal successors, (275), 15 states have internal predecessors, (275), 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) [2024-11-09 15:15:33,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:33,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-09 15:15:33,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:34,088 INFO L124 PetriNetUnfolderBase]: 944/2321 cut-off events. [2024-11-09 15:15:34,088 INFO L125 PetriNetUnfolderBase]: For 24682/24968 co-relation queries the response was YES. [2024-11-09 15:15:34,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11152 conditions, 2321 events. 944/2321 cut-off events. For 24682/24968 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 15824 event pairs, 244 based on Foata normal form. 64/2347 useless extension candidates. Maximal degree in co-relation 11086. Up to 1056 conditions per place. [2024-11-09 15:15:34,102 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 119 selfloop transitions, 64 changer transitions 78/285 dead transitions. [2024-11-09 15:15:34,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 285 transitions, 3425 flow [2024-11-09 15:15:34,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 15:15:34,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 15:15:34,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 275 transitions. [2024-11-09 15:15:34,103 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-11-09 15:15:34,103 INFO L175 Difference]: Start difference. First operand has 220 places, 283 transitions, 3036 flow. Second operand 13 states and 275 transitions. [2024-11-09 15:15:34,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 285 transitions, 3425 flow [2024-11-09 15:15:34,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 285 transitions, 3116 flow, removed 49 selfloop flow, removed 17 redundant places. [2024-11-09 15:15:34,137 INFO L231 Difference]: Finished difference. Result has 192 places, 203 transitions, 2046 flow [2024-11-09 15:15:34,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2380, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2046, PETRI_PLACES=192, PETRI_TRANSITIONS=203} [2024-11-09 15:15:34,137 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 143 predicate places. [2024-11-09 15:15:34,137 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 203 transitions, 2046 flow [2024-11-09 15:15:34,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.333333333333332) internal successors, (275), 15 states have internal predecessors, (275), 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) [2024-11-09 15:15:34,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:34,138 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:34,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 15:15:34,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:34,338 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:34,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:34,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1694712449, now seen corresponding path program 1 times [2024-11-09 15:15:34,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:34,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448745101] [2024-11-09 15:15:34,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:34,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:34,402 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:15:34,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:34,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448745101] [2024-11-09 15:15:34,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448745101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:15:34,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:15:34,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:15:34,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50727597] [2024-11-09 15:15:34,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:15:34,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:15:34,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:34,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:15:34,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:15:34,405 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-09 15:15:34,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 203 transitions, 2046 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-11-09 15:15:34,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:34,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-09 15:15:34,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:34,686 INFO L124 PetriNetUnfolderBase]: 778/1898 cut-off events. [2024-11-09 15:15:34,686 INFO L125 PetriNetUnfolderBase]: For 12283/12600 co-relation queries the response was YES. [2024-11-09 15:15:34,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8330 conditions, 1898 events. 778/1898 cut-off events. For 12283/12600 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 12057 event pairs, 248 based on Foata normal form. 72/1912 useless extension candidates. Maximal degree in co-relation 8275. Up to 597 conditions per place. [2024-11-09 15:15:34,703 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 203 selfloop transitions, 12 changer transitions 0/240 dead transitions. [2024-11-09 15:15:34,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 240 transitions, 2785 flow [2024-11-09 15:15:34,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:15:34,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:15:34,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-09 15:15:34,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-09 15:15:34,706 INFO L175 Difference]: Start difference. First operand has 192 places, 203 transitions, 2046 flow. Second operand 4 states and 120 transitions. [2024-11-09 15:15:34,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 240 transitions, 2785 flow [2024-11-09 15:15:34,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 240 transitions, 2579 flow, removed 39 selfloop flow, removed 18 redundant places. [2024-11-09 15:15:34,727 INFO L231 Difference]: Finished difference. Result has 164 places, 201 transitions, 1909 flow [2024-11-09 15:15:34,727 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1909, PETRI_PLACES=164, PETRI_TRANSITIONS=201} [2024-11-09 15:15:34,728 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 115 predicate places. [2024-11-09 15:15:34,728 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 201 transitions, 1909 flow [2024-11-09 15:15:34,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-11-09 15:15:34,728 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:34,728 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:34,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 15:15:34,729 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:34,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:34,729 INFO L85 PathProgramCache]: Analyzing trace with hash 744012687, now seen corresponding path program 3 times [2024-11-09 15:15:34,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:34,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45789787] [2024-11-09 15:15:34,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:34,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 15:15:34,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:34,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45789787] [2024-11-09 15:15:34,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45789787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:15:34,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:15:34,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:15:34,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552556142] [2024-11-09 15:15:34,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:15:34,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:15:34,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:34,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:15:34,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:15:34,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-09 15:15:34,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 201 transitions, 1909 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-11-09 15:15:34,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:34,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-09 15:15:34,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:35,119 INFO L124 PetriNetUnfolderBase]: 939/2402 cut-off events. [2024-11-09 15:15:35,119 INFO L125 PetriNetUnfolderBase]: For 11463/11841 co-relation queries the response was YES. [2024-11-09 15:15:35,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9682 conditions, 2402 events. 939/2402 cut-off events. For 11463/11841 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 17223 event pairs, 335 based on Foata normal form. 89/2406 useless extension candidates. Maximal degree in co-relation 9635. Up to 778 conditions per place. [2024-11-09 15:15:35,134 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 200 selfloop transitions, 22 changer transitions 0/246 dead transitions. [2024-11-09 15:15:35,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 246 transitions, 2771 flow [2024-11-09 15:15:35,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:15:35,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:15:35,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-09 15:15:35,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-11-09 15:15:35,135 INFO L175 Difference]: Start difference. First operand has 164 places, 201 transitions, 1909 flow. Second operand 4 states and 122 transitions. [2024-11-09 15:15:35,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 246 transitions, 2771 flow [2024-11-09 15:15:35,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 246 transitions, 2747 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-11-09 15:15:35,154 INFO L231 Difference]: Finished difference. Result has 168 places, 206 transitions, 2027 flow [2024-11-09 15:15:35,155 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2027, PETRI_PLACES=168, PETRI_TRANSITIONS=206} [2024-11-09 15:15:35,155 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 119 predicate places. [2024-11-09 15:15:35,155 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 206 transitions, 2027 flow [2024-11-09 15:15:35,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-11-09 15:15:35,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:35,156 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:35,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 15:15:35,156 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-09 15:15:35,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:35,156 INFO L85 PathProgramCache]: Analyzing trace with hash -583904322, now seen corresponding path program 1 times [2024-11-09 15:15:35,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:35,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462605897] [2024-11-09 15:15:35,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:35,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:35,746 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:15:35,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:35,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462605897] [2024-11-09 15:15:35,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462605897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:35,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561196034] [2024-11-09 15:15:35,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:35,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:35,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:35,749 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:35,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 15:15:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:35,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-09 15:15:35,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:35,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 15:15:35,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 15:15:36,043 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 15:15:36,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 15:15:36,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 15:15:36,207 INFO L349 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2024-11-09 15:15:36,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 21 [2024-11-09 15:15:37,786 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 15:15:37,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 17 [2024-11-09 15:15:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:37,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:56,049 INFO L349 Elim1Store]: treesize reduction 35, result has 63.2 percent of original size [2024-11-09 15:15:56,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 3081 treesize of output 2860 [2024-11-09 15:15:56,149 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:15:56,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 989 treesize of output 961 [2024-11-09 15:15:56,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 265 treesize of output 247 [2024-11-09 15:15:56,819 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:15:56,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 239 treesize of output 182 [2024-11-09 15:15:57,632 INFO L349 Elim1Store]: treesize reduction 5, result has 93.6 percent of original size [2024-11-09 15:15:57,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1707 treesize of output 1430 [2024-11-09 15:16:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:04,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561196034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:16:04,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:16:04,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 21] total 54 [2024-11-09 15:16:04,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838734483] [2024-11-09 15:16:04,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:16:04,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-09 15:16:04,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:04,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-09 15:16:04,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=2764, Unknown=4, NotChecked=0, Total=3080 [2024-11-09 15:16:09,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 15:16:13,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 15:16:17,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 15:16:21,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]