./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-symm.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/chl-chromosome-symm.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 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:07:35,899 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:07:35,957 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:07:35,962 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:07:35,963 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:07:35,985 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:07:35,986 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:07:35,986 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:07:35,986 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:07:35,986 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:07:35,987 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:07:35,987 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:07:35,989 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:07:35,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:07:35,991 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:07:35,992 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:07:35,992 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:07:35,992 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:07:35,993 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:07:35,993 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:07:35,993 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:07:35,995 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:07:35,995 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:07:35,995 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:07:35,995 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:07:35,995 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:07:35,996 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:07:35,996 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:07:35,996 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:07:35,996 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:07:35,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:07:35,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:07:35,997 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:07:35,997 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:07:35,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:07:35,998 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:07:35,998 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:07:35,998 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:07:35,998 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:07:35,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:07:35,998 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:07:35,999 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:07:35,999 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:07:35,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:07:36,000 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa [2024-11-09 15:07:36,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:07:36,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:07:36,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:07:36,201 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:07:36,201 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:07:36,202 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2024-11-09 15:07:37,766 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:07:38,012 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:07:38,012 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2024-11-09 15:07:38,020 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c98ff0e0/0333ffca6e1b4266aeb73175fe665336/FLAG90834a156 [2024-11-09 15:07:38,353 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c98ff0e0/0333ffca6e1b4266aeb73175fe665336 [2024-11-09 15:07:38,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:07:38,357 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:07:38,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:07:38,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:07:38,370 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:07:38,371 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:07:38" (1/1) ... [2024-11-09 15:07:38,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6abcc1b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:38, skipping insertion in model container [2024-11-09 15:07:38,377 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:07:38" (1/1) ... [2024-11-09 15:07:38,409 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:07:38,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:07:38,717 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:07:38,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:07:38,785 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:07:38,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:38 WrapperNode [2024-11-09 15:07:38,789 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:07:38,790 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:07:38,790 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:07:38,791 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:07:38,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:38" (1/1) ... [2024-11-09 15:07:38,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:38" (1/1) ... [2024-11-09 15:07:38,860 INFO L138 Inliner]: procedures = 24, calls = 28, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 229 [2024-11-09 15:07:38,861 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:07:38,861 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:07:38,865 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:07:38,865 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:07:38,880 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:38" (1/1) ... [2024-11-09 15:07:38,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:38" (1/1) ... [2024-11-09 15:07:38,885 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:38" (1/1) ... [2024-11-09 15:07:38,904 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 15:07:38,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:38" (1/1) ... [2024-11-09 15:07:38,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:38" (1/1) ... [2024-11-09 15:07:38,909 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:38" (1/1) ... [2024-11-09 15:07:38,915 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:38" (1/1) ... [2024-11-09 15:07:38,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:38" (1/1) ... [2024-11-09 15:07:38,921 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:38" (1/1) ... [2024-11-09 15:07:38,923 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:07:38,928 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:07:38,928 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:07:38,928 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:07:38,929 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:38" (1/1) ... [2024-11-09 15:07:38,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:07:38,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:38,960 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 15:07:38,969 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 15:07:39,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:07:39,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:07:39,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:07:39,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:07:39,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:07:39,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:07:39,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:07:39,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:07:39,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:07:39,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:07:39,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:07:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:07:39,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:07:39,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:07:39,017 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 15:07:39,108 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:07:39,111 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:07:39,467 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:07:39,468 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:07:39,643 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:07:39,643 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 15:07:39,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:07:39 BoogieIcfgContainer [2024-11-09 15:07:39,644 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:07:39,645 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:07:39,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:07:39,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:07:39,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:07:38" (1/3) ... [2024-11-09 15:07:39,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1907306f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:07:39, skipping insertion in model container [2024-11-09 15:07:39,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:38" (2/3) ... [2024-11-09 15:07:39,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1907306f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:07:39, skipping insertion in model container [2024-11-09 15:07:39,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:07:39" (3/3) ... [2024-11-09 15:07:39,650 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2024-11-09 15:07:39,664 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:07:39,664 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-09 15:07:39,664 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:07:39,716 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 15:07:39,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 72 transitions, 158 flow [2024-11-09 15:07:39,786 INFO L124 PetriNetUnfolderBase]: 8/70 cut-off events. [2024-11-09 15:07:39,787 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 15:07:39,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 70 events. 8/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 211 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-11-09 15:07:39,793 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 72 transitions, 158 flow [2024-11-09 15:07:39,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 68 transitions, 145 flow [2024-11-09 15:07:39,809 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:07:39,816 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;@46dccae8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:07:39,817 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-09 15:07:39,820 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:07:39,820 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:07:39,820 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:07:39,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:39,821 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:07:39,822 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:07:39,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:39,828 INFO L85 PathProgramCache]: Analyzing trace with hash 734115, now seen corresponding path program 1 times [2024-11-09 15:07:39,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:39,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814674625] [2024-11-09 15:07:39,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:39,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:40,019 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 15:07:40,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:40,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814674625] [2024-11-09 15:07:40,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814674625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:40,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:40,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:07:40,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894447986] [2024-11-09 15:07:40,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:40,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:40,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:40,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:40,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:07:40,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-11-09 15:07:40,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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 15:07:40,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:40,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-11-09 15:07:40,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:40,301 INFO L124 PetriNetUnfolderBase]: 285/771 cut-off events. [2024-11-09 15:07:40,301 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-09 15:07:40,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1245 conditions, 771 events. 285/771 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4920 event pairs, 176 based on Foata normal form. 2/597 useless extension candidates. Maximal degree in co-relation 1156. Up to 443 conditions per place. [2024-11-09 15:07:40,315 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 33 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-11-09 15:07:40,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 74 transitions, 237 flow [2024-11-09 15:07:40,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:07:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:07:40,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2024-11-09 15:07:40,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-11-09 15:07:40,327 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 145 flow. Second operand 4 states and 188 transitions. [2024-11-09 15:07:40,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 74 transitions, 237 flow [2024-11-09 15:07:40,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 74 transitions, 232 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:07:40,334 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 200 flow [2024-11-09 15:07:40,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2024-11-09 15:07:40,338 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2024-11-09 15:07:40,338 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 200 flow [2024-11-09 15:07:40,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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 15:07:40,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:40,339 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:07:40,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:07:40,339 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:07:40,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:40,340 INFO L85 PathProgramCache]: Analyzing trace with hash 395907990, now seen corresponding path program 1 times [2024-11-09 15:07:40,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:40,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631802929] [2024-11-09 15:07:40,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:40,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:40,458 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 15:07:40,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:40,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631802929] [2024-11-09 15:07:40,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631802929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:40,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406537036] [2024-11-09 15:07:40,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:40,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:40,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:40,461 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 15:07:40,465 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 15:07:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:40,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:07:40,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:40,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:40,576 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:07:40,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406537036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:40,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:07:40,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:07:40,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418670309] [2024-11-09 15:07:40,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:40,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:07:40,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:40,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:07:40,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:07:40,597 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-11-09 15:07:40,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 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 15:07:40,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:40,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-11-09 15:07:40,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:40,782 INFO L124 PetriNetUnfolderBase]: 285/769 cut-off events. [2024-11-09 15:07:40,782 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-09 15:07:40,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 769 events. 285/769 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4904 event pairs, 176 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 1206. Up to 433 conditions per place. [2024-11-09 15:07:40,789 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 26 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-11-09 15:07:40,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 72 transitions, 268 flow [2024-11-09 15:07:40,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:07:40,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:07:40,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 256 transitions. [2024-11-09 15:07:40,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-11-09 15:07:40,795 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 200 flow. Second operand 6 states and 256 transitions. [2024-11-09 15:07:40,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 72 transitions, 268 flow [2024-11-09 15:07:40,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 72 transitions, 268 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:07:40,798 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 216 flow [2024-11-09 15:07:40,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-11-09 15:07:40,801 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2024-11-09 15:07:40,802 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 216 flow [2024-11-09 15:07:40,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 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 15:07:40,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:40,802 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:07:40,817 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 15:07:41,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:41,007 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:07:41,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:41,009 INFO L85 PathProgramCache]: Analyzing trace with hash -611753468, now seen corresponding path program 1 times [2024-11-09 15:07:41,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:41,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358610559] [2024-11-09 15:07:41,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:41,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:41,136 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 15:07:41,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:41,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358610559] [2024-11-09 15:07:41,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358610559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:41,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529112172] [2024-11-09 15:07:41,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:41,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:41,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:41,140 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 15:07:41,141 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 15:07:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:41,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:07:41,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:41,214 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 15:07:41,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:41,244 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 15:07:41,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529112172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:41,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:41,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:07:41,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800298499] [2024-11-09 15:07:41,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:41,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:07:41,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:41,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:07:41,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:07:41,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-11-09 15:07:41,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 216 flow. Second operand has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 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 15:07:41,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:41,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-11-09 15:07:41,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:41,447 INFO L124 PetriNetUnfolderBase]: 291/793 cut-off events. [2024-11-09 15:07:41,448 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-09 15:07:41,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1350 conditions, 793 events. 291/793 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5124 event pairs, 176 based on Foata normal form. 6/625 useless extension candidates. Maximal degree in co-relation 1208. Up to 444 conditions per place. [2024-11-09 15:07:41,452 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 31 selfloop transitions, 25 changer transitions 0/90 dead transitions. [2024-11-09 15:07:41,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 90 transitions, 442 flow [2024-11-09 15:07:41,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:07:41,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:07:41,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 422 transitions. [2024-11-09 15:07:41,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5861111111111111 [2024-11-09 15:07:41,454 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 216 flow. Second operand 10 states and 422 transitions. [2024-11-09 15:07:41,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 90 transitions, 442 flow [2024-11-09 15:07:41,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 90 transitions, 384 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-09 15:07:41,457 INFO L231 Difference]: Finished difference. Result has 80 places, 90 transitions, 356 flow [2024-11-09 15:07:41,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=356, PETRI_PLACES=80, PETRI_TRANSITIONS=90} [2024-11-09 15:07:41,458 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2024-11-09 15:07:41,458 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 90 transitions, 356 flow [2024-11-09 15:07:41,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 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 15:07:41,459 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:41,459 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:41,474 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 15:07:41,662 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,SelfDestructingSolverStorable2 [2024-11-09 15:07:41,663 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:07:41,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:41,664 INFO L85 PathProgramCache]: Analyzing trace with hash -743585408, now seen corresponding path program 1 times [2024-11-09 15:07:41,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:41,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022695761] [2024-11-09 15:07:41,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:41,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:41,764 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 15:07:41,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:41,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022695761] [2024-11-09 15:07:41,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022695761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:41,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:41,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:07:41,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94782856] [2024-11-09 15:07:41,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:41,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:41,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:41,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:41,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:07:41,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 72 [2024-11-09 15:07:41,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 90 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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 15:07:41,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:41,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 72 [2024-11-09 15:07:41,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:42,056 INFO L124 PetriNetUnfolderBase]: 550/1292 cut-off events. [2024-11-09 15:07:42,056 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-09 15:07:42,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2281 conditions, 1292 events. 550/1292 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8840 event pairs, 161 based on Foata normal form. 40/1067 useless extension candidates. Maximal degree in co-relation 2214. Up to 431 conditions per place. [2024-11-09 15:07:42,071 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 82 selfloop transitions, 5 changer transitions 0/117 dead transitions. [2024-11-09 15:07:42,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 117 transitions, 588 flow [2024-11-09 15:07:42,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:07:42,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:07:42,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-11-09 15:07:42,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7013888888888888 [2024-11-09 15:07:42,073 INFO L175 Difference]: Start difference. First operand has 80 places, 90 transitions, 356 flow. Second operand 4 states and 202 transitions. [2024-11-09 15:07:42,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 117 transitions, 588 flow [2024-11-09 15:07:42,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 117 transitions, 564 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-09 15:07:42,082 INFO L231 Difference]: Finished difference. Result has 83 places, 92 transitions, 366 flow [2024-11-09 15:07:42,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=366, PETRI_PLACES=83, PETRI_TRANSITIONS=92} [2024-11-09 15:07:42,083 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 16 predicate places. [2024-11-09 15:07:42,084 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 92 transitions, 366 flow [2024-11-09 15:07:42,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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 15:07:42,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:42,085 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:42,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:07:42,085 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:07:42,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:42,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1576310376, now seen corresponding path program 1 times [2024-11-09 15:07:42,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:42,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171908327] [2024-11-09 15:07:42,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:42,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:42,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:42,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171908327] [2024-11-09 15:07:42,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171908327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:42,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:42,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:07:42,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681117497] [2024-11-09 15:07:42,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:42,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:07:42,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:42,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:07:42,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:07:42,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 72 [2024-11-09 15:07:42,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 92 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 15:07:42,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:42,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 72 [2024-11-09 15:07:42,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:42,267 INFO L124 PetriNetUnfolderBase]: 359/1011 cut-off events. [2024-11-09 15:07:42,268 INFO L125 PetriNetUnfolderBase]: For 255/279 co-relation queries the response was YES. [2024-11-09 15:07:42,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1859 conditions, 1011 events. 359/1011 cut-off events. For 255/279 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6949 event pairs, 228 based on Foata normal form. 15/830 useless extension candidates. Maximal degree in co-relation 1792. Up to 563 conditions per place. [2024-11-09 15:07:42,275 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 47 selfloop transitions, 7 changer transitions 0/90 dead transitions. [2024-11-09 15:07:42,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 90 transitions, 465 flow [2024-11-09 15:07:42,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:07:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:07:42,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-11-09 15:07:42,276 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-11-09 15:07:42,276 INFO L175 Difference]: Start difference. First operand has 83 places, 92 transitions, 366 flow. Second operand 3 states and 156 transitions. [2024-11-09 15:07:42,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 90 transitions, 465 flow [2024-11-09 15:07:42,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 90 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:07:42,281 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 364 flow [2024-11-09 15:07:42,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=364, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2024-11-09 15:07:42,283 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 17 predicate places. [2024-11-09 15:07:42,283 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 364 flow [2024-11-09 15:07:42,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 15:07:42,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:42,284 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:42,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:07:42,284 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:07:42,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:42,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1173233204, now seen corresponding path program 1 times [2024-11-09 15:07:42,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:42,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667755313] [2024-11-09 15:07:42,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:42,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:42,360 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 15:07:42,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:42,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667755313] [2024-11-09 15:07:42,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667755313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:42,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105587845] [2024-11-09 15:07:42,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:42,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:42,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:42,362 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 15:07:42,363 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 15:07:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:42,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:07:42,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:42,452 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 15:07:42,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:42,474 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 15:07:42,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105587845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:42,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:42,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:07:42,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231987509] [2024-11-09 15:07:42,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:42,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 15:07:42,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:42,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 15:07:42,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-09 15:07:42,489 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-11-09 15:07:42,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 364 flow. Second operand has 11 states, 11 states have (on average 37.63636363636363) internal successors, (414), 11 states have internal predecessors, (414), 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 15:07:42,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:42,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-11-09 15:07:42,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:42,643 INFO L124 PetriNetUnfolderBase]: 355/1007 cut-off events. [2024-11-09 15:07:42,644 INFO L125 PetriNetUnfolderBase]: For 263/287 co-relation queries the response was YES. [2024-11-09 15:07:42,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1850 conditions, 1007 events. 355/1007 cut-off events. For 263/287 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6850 event pairs, 228 based on Foata normal form. 17/829 useless extension candidates. Maximal degree in co-relation 1780. Up to 549 conditions per place. [2024-11-09 15:07:42,647 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 31 selfloop transitions, 21 changer transitions 0/86 dead transitions. [2024-11-09 15:07:42,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 86 transitions, 444 flow [2024-11-09 15:07:42,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:07:42,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:07:42,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 298 transitions. [2024-11-09 15:07:42,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5912698412698413 [2024-11-09 15:07:42,649 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 364 flow. Second operand 7 states and 298 transitions. [2024-11-09 15:07:42,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 86 transitions, 444 flow [2024-11-09 15:07:42,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 86 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:07:42,651 INFO L231 Difference]: Finished difference. Result has 88 places, 86 transitions, 372 flow [2024-11-09 15:07:42,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=372, PETRI_PLACES=88, PETRI_TRANSITIONS=86} [2024-11-09 15:07:42,652 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2024-11-09 15:07:42,652 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 86 transitions, 372 flow [2024-11-09 15:07:42,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 37.63636363636363) internal successors, (414), 11 states have internal predecessors, (414), 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 15:07:42,653 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:42,653 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-09 15:07:42,666 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 15:07:42,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:42,857 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:07:42,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:42,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1859144361, now seen corresponding path program 2 times [2024-11-09 15:07:42,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:42,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305452228] [2024-11-09 15:07:42,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:42,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:42,958 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 15:07:42,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:42,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305452228] [2024-11-09 15:07:42,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305452228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:42,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230757768] [2024-11-09 15:07:42,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:07:42,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:42,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:42,960 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 15:07:42,961 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 15:07:43,008 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:07:43,008 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:07:43,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:07:43,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:43,031 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 15:07:43,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:43,079 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 15:07:43,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230757768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:43,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:43,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2024-11-09 15:07:43,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566786250] [2024-11-09 15:07:43,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:43,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 15:07:43,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:43,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 15:07:43,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-09 15:07:43,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-11-09 15:07:43,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 372 flow. Second operand has 15 states, 15 states have (on average 37.333333333333336) internal successors, (560), 15 states have internal predecessors, (560), 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 15:07:43,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:43,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-11-09 15:07:43,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:43,327 INFO L124 PetriNetUnfolderBase]: 357/1009 cut-off events. [2024-11-09 15:07:43,328 INFO L125 PetriNetUnfolderBase]: For 289/313 co-relation queries the response was YES. [2024-11-09 15:07:43,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 1009 events. 357/1009 cut-off events. For 289/313 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6855 event pairs, 228 based on Foata normal form. 15/828 useless extension candidates. Maximal degree in co-relation 1788. Up to 544 conditions per place. [2024-11-09 15:07:43,331 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 25 selfloop transitions, 29 changer transitions 0/88 dead transitions. [2024-11-09 15:07:43,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 88 transitions, 488 flow [2024-11-09 15:07:43,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 15:07:43,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 15:07:43,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 522 transitions. [2024-11-09 15:07:43,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2024-11-09 15:07:43,333 INFO L175 Difference]: Start difference. First operand has 88 places, 86 transitions, 372 flow. Second operand 13 states and 522 transitions. [2024-11-09 15:07:43,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 88 transitions, 488 flow [2024-11-09 15:07:43,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 88 transitions, 450 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-11-09 15:07:43,335 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 400 flow [2024-11-09 15:07:43,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=400, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2024-11-09 15:07:43,336 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 23 predicate places. [2024-11-09 15:07:43,336 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 400 flow [2024-11-09 15:07:43,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.333333333333336) internal successors, (560), 15 states have internal predecessors, (560), 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 15:07:43,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:43,337 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:43,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 15:07:43,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:43,540 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:07:43,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:43,541 INFO L85 PathProgramCache]: Analyzing trace with hash 219563508, now seen corresponding path program 2 times [2024-11-09 15:07:43,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:43,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926793868] [2024-11-09 15:07:43,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:43,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:43,645 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:07:43,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:43,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926793868] [2024-11-09 15:07:43,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926793868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:43,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326732326] [2024-11-09 15:07:43,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:07:43,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:43,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:43,648 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 15:07:43,653 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 15:07:43,718 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 15:07:43,718 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:07:43,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 15:07:43,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:43,794 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:07:43,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:07:43,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326732326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:43,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:43,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-09 15:07:43,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900320667] [2024-11-09 15:07:43,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:43,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 15:07:43,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:43,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 15:07:43,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-11-09 15:07:43,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-11-09 15:07:43,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 400 flow. Second operand has 18 states, 18 states have (on average 37.44444444444444) internal successors, (674), 18 states have internal predecessors, (674), 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 15:07:43,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:43,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-11-09 15:07:43,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:44,090 INFO L124 PetriNetUnfolderBase]: 353/1005 cut-off events. [2024-11-09 15:07:44,090 INFO L125 PetriNetUnfolderBase]: For 285/309 co-relation queries the response was YES. [2024-11-09 15:07:44,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 1005 events. 353/1005 cut-off events. For 285/309 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6795 event pairs, 228 based on Foata normal form. 15/825 useless extension candidates. Maximal degree in co-relation 1713. Up to 544 conditions per place. [2024-11-09 15:07:44,094 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 28 selfloop transitions, 22 changer transitions 0/84 dead transitions. [2024-11-09 15:07:44,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 84 transitions, 470 flow [2024-11-09 15:07:44,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 15:07:44,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 15:07:44,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 448 transitions. [2024-11-09 15:07:44,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5656565656565656 [2024-11-09 15:07:44,095 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 400 flow. Second operand 11 states and 448 transitions. [2024-11-09 15:07:44,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 84 transitions, 470 flow [2024-11-09 15:07:44,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 84 transitions, 350 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-11-09 15:07:44,097 INFO L231 Difference]: Finished difference. Result has 86 places, 84 transitions, 294 flow [2024-11-09 15:07:44,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=294, PETRI_PLACES=86, PETRI_TRANSITIONS=84} [2024-11-09 15:07:44,098 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 19 predicate places. [2024-11-09 15:07:44,098 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 84 transitions, 294 flow [2024-11-09 15:07:44,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 37.44444444444444) internal successors, (674), 18 states have internal predecessors, (674), 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 15:07:44,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:44,099 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:44,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 15:07:44,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:44,299 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:07:44,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:44,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1007424076, now seen corresponding path program 3 times [2024-11-09 15:07:44,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:44,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613167543] [2024-11-09 15:07:44,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:44,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 15:07:45,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:45,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613167543] [2024-11-09 15:07:45,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613167543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:45,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484521867] [2024-11-09 15:07:45,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 15:07:45,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:45,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:45,224 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 15:07:45,225 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 15:07:45,319 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-09 15:07:45,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:07:45,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 15:07:45,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:45,362 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 15 treesize of output 1 [2024-11-09 15:07:45,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 15:07:45,408 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 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-09 15:07:45,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 15:07:45,459 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 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-09 15:07:45,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 15:07:45,514 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 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-09 15:07:45,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 15:07:45,566 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 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-09 15:07:45,602 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 15:07:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 15:07:45,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:46,501 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 21 treesize of output 19 [2024-11-09 15:07:46,506 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 98 treesize of output 94 [2024-11-09 15:07:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 15:07:46,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484521867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:46,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:46,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 9] total 33 [2024-11-09 15:07:46,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845943778] [2024-11-09 15:07:46,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:46,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 15:07:46,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:46,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 15:07:46,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 15:07:46,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 72 [2024-11-09 15:07:46,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 294 flow. Second operand has 34 states, 34 states have (on average 34.294117647058826) internal successors, (1166), 34 states have internal predecessors, (1166), 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 15:07:46,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:46,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 72 [2024-11-09 15:07:46,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:47,528 INFO L124 PetriNetUnfolderBase]: 897/2326 cut-off events. [2024-11-09 15:07:47,528 INFO L125 PetriNetUnfolderBase]: For 536/540 co-relation queries the response was YES. [2024-11-09 15:07:47,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4414 conditions, 2326 events. 897/2326 cut-off events. For 536/540 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 17219 event pairs, 207 based on Foata normal form. 4/1997 useless extension candidates. Maximal degree in co-relation 4304. Up to 471 conditions per place. [2024-11-09 15:07:47,536 INFO L140 encePairwiseOnDemand]: 57/72 looper letters, 80 selfloop transitions, 35 changer transitions 0/147 dead transitions. [2024-11-09 15:07:47,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 147 transitions, 681 flow [2024-11-09 15:07:47,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 15:07:47,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 15:07:47,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 673 transitions. [2024-11-09 15:07:47,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5498366013071896 [2024-11-09 15:07:47,538 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 294 flow. Second operand 17 states and 673 transitions. [2024-11-09 15:07:47,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 147 transitions, 681 flow [2024-11-09 15:07:47,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 147 transitions, 637 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-09 15:07:47,541 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 382 flow [2024-11-09 15:07:47,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=382, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2024-11-09 15:07:47,542 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 28 predicate places. [2024-11-09 15:07:47,542 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 382 flow [2024-11-09 15:07:47,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 34.294117647058826) internal successors, (1166), 34 states have internal predecessors, (1166), 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 15:07:47,543 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:47,543 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:47,558 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 15:07:47,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:47,744 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:07:47,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:47,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1165406264, now seen corresponding path program 1 times [2024-11-09 15:07:47,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:47,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683906702] [2024-11-09 15:07:47,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:47,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:48,373 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 15:07:48,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:48,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683906702] [2024-11-09 15:07:48,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683906702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:48,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853650486] [2024-11-09 15:07:48,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:48,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:48,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:48,375 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 15:07:48,376 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 15:07:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:48,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 15:07:48,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:48,471 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 15 treesize of output 1 [2024-11-09 15:07:48,514 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-09 15:07:48,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 33 treesize of output 13 [2024-11-09 15:07:48,559 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-09 15:07:48,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 33 treesize of output 13 [2024-11-09 15:07:48,605 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-09 15:07:48,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 33 treesize of output 13 [2024-11-09 15:07:48,653 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-09 15:07:48,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 33 treesize of output 13 [2024-11-09 15:07:48,708 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 17 treesize of output 9 [2024-11-09 15:07:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 15:07:48,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:49,310 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 21 [2024-11-09 15:07:49,313 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 52 treesize of output 50 [2024-11-09 15:07:49,332 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 15:07:49,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853650486] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:49,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:49,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 9] total 34 [2024-11-09 15:07:49,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558198918] [2024-11-09 15:07:49,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:49,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-09 15:07:49,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:49,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-09 15:07:49,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1033, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 15:07:49,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 72 [2024-11-09 15:07:49,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 382 flow. Second operand has 35 states, 35 states have (on average 32.34285714285714) internal successors, (1132), 35 states have internal predecessors, (1132), 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 15:07:49,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:49,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 72 [2024-11-09 15:07:49,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:50,426 INFO L124 PetriNetUnfolderBase]: 1105/2452 cut-off events. [2024-11-09 15:07:50,427 INFO L125 PetriNetUnfolderBase]: For 1440/1448 co-relation queries the response was YES. [2024-11-09 15:07:50,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5357 conditions, 2452 events. 1105/2452 cut-off events. For 1440/1448 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 16695 event pairs, 308 based on Foata normal form. 28/2177 useless extension candidates. Maximal degree in co-relation 2637. Up to 625 conditions per place. [2024-11-09 15:07:50,436 INFO L140 encePairwiseOnDemand]: 57/72 looper letters, 84 selfloop transitions, 35 changer transitions 0/148 dead transitions. [2024-11-09 15:07:50,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 148 transitions, 749 flow [2024-11-09 15:07:50,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 15:07:50,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 15:07:50,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 639 transitions. [2024-11-09 15:07:50,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5220588235294118 [2024-11-09 15:07:50,439 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 382 flow. Second operand 17 states and 639 transitions. [2024-11-09 15:07:50,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 148 transitions, 749 flow [2024-11-09 15:07:50,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 148 transitions, 698 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-09 15:07:50,443 INFO L231 Difference]: Finished difference. Result has 102 places, 94 transitions, 423 flow [2024-11-09 15:07:50,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=423, PETRI_PLACES=102, PETRI_TRANSITIONS=94} [2024-11-09 15:07:50,444 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 35 predicate places. [2024-11-09 15:07:50,444 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 94 transitions, 423 flow [2024-11-09 15:07:50,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 32.34285714285714) internal successors, (1132), 35 states have internal predecessors, (1132), 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 15:07:50,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:50,445 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:50,461 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 15:07:50,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:50,646 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:07:50,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:50,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1861064877, now seen corresponding path program 1 times [2024-11-09 15:07:50,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:50,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663366229] [2024-11-09 15:07:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:50,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:50,711 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:07:50,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:50,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663366229] [2024-11-09 15:07:50,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663366229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:50,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:50,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:07:50,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36726681] [2024-11-09 15:07:50,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:50,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:50,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:50,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:50,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:07:50,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 72 [2024-11-09 15:07:50,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 94 transitions, 423 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 15:07:50,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:50,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 72 [2024-11-09 15:07:50,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:50,965 INFO L124 PetriNetUnfolderBase]: 1369/3225 cut-off events. [2024-11-09 15:07:50,966 INFO L125 PetriNetUnfolderBase]: For 3471/3552 co-relation queries the response was YES. [2024-11-09 15:07:50,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7391 conditions, 3225 events. 1369/3225 cut-off events. For 3471/3552 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 24496 event pairs, 484 based on Foata normal form. 149/2854 useless extension candidates. Maximal degree in co-relation 6487. Up to 1123 conditions per place. [2024-11-09 15:07:50,989 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 101 selfloop transitions, 5 changer transitions 0/137 dead transitions. [2024-11-09 15:07:50,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 137 transitions, 899 flow [2024-11-09 15:07:50,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:07:50,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:07:50,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-11-09 15:07:50,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-11-09 15:07:50,990 INFO L175 Difference]: Start difference. First operand has 102 places, 94 transitions, 423 flow. Second operand 4 states and 200 transitions. [2024-11-09 15:07:50,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 137 transitions, 899 flow [2024-11-09 15:07:50,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 137 transitions, 815 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-11-09 15:07:50,995 INFO L231 Difference]: Finished difference. Result has 93 places, 96 transitions, 395 flow [2024-11-09 15:07:50,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=395, PETRI_PLACES=93, PETRI_TRANSITIONS=96} [2024-11-09 15:07:50,996 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 26 predicate places. [2024-11-09 15:07:50,996 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 96 transitions, 395 flow [2024-11-09 15:07:50,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 15:07:50,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:50,997 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:50,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 15:07:50,997 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:07:50,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:50,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1858435522, now seen corresponding path program 1 times [2024-11-09 15:07:50,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:50,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278465184] [2024-11-09 15:07:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:51,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:51,763 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:07:51,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:51,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278465184] [2024-11-09 15:07:51,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278465184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:51,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863364387] [2024-11-09 15:07:51,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:51,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:51,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:51,765 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 15:07:51,766 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 15:07:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:51,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 15:07:51,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:51,872 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 15:07:51,895 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 15 treesize of output 1 [2024-11-09 15:07:51,970 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-09 15:07:51,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 31 treesize of output 11 [2024-11-09 15:07:52,043 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-09 15:07:52,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 31 treesize of output 11 [2024-11-09 15:07:52,114 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-09 15:07:52,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 31 treesize of output 11 [2024-11-09 15:07:52,185 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-09 15:07:52,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 31 treesize of output 11 [2024-11-09 15:07:52,217 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 15:07:52,218 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 15:07:52,251 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 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 15:07:52,267 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 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 15:07:52,280 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 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 15:07:52,295 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 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 15:07:52,312 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 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 15:07:52,365 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 15:07:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:07:52,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:52,533 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_302 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_174| Int)) (or (< (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_174| v_ArrVal_302) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_174|) 0)))) is different from false [2024-11-09 15:08:58,732 INFO L349 Elim1Store]: treesize reduction 244, result has 20.0 percent of original size [2024-11-09 15:08:58,732 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 5 case distinctions, treesize of input 50 treesize of output 71 [2024-11-09 15:08:58,743 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:08:58,744 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 33 treesize of output 29 [2024-11-09 15:08:58,748 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 9 treesize of output 7 [2024-11-09 15:08:58,808 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 20 refuted. 2 times theorem prover too weak. 22 trivial. 13 not checked. [2024-11-09 15:08:58,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863364387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:08:58,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:08:58,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 41 [2024-11-09 15:08:58,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715145513] [2024-11-09 15:08:58,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:08:58,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-09 15:08:58,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:58,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-09 15:08:58,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1492, Unknown=23, NotChecked=80, Total=1806 [2024-11-09 15:08:58,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 72 [2024-11-09 15:08:58,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 96 transitions, 395 flow. Second operand has 43 states, 43 states have (on average 27.11627906976744) internal successors, (1166), 43 states have internal predecessors, (1166), 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 15:08:58,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:58,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 72 [2024-11-09 15:08:58,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:00,910 INFO L124 PetriNetUnfolderBase]: 3932/7270 cut-off events. [2024-11-09 15:09:00,910 INFO L125 PetriNetUnfolderBase]: For 8735/9164 co-relation queries the response was YES. [2024-11-09 15:09:00,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19150 conditions, 7270 events. 3932/7270 cut-off events. For 8735/9164 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 52169 event pairs, 919 based on Foata normal form. 265/6903 useless extension candidates. Maximal degree in co-relation 17701. Up to 2166 conditions per place. [2024-11-09 15:09:00,937 INFO L140 encePairwiseOnDemand]: 57/72 looper letters, 151 selfloop transitions, 35 changer transitions 0/212 dead transitions. [2024-11-09 15:09:00,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 212 transitions, 1339 flow [2024-11-09 15:09:00,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 15:09:00,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-09 15:09:00,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 812 transitions. [2024-11-09 15:09:00,940 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4176954732510288 [2024-11-09 15:09:00,940 INFO L175 Difference]: Start difference. First operand has 93 places, 96 transitions, 395 flow. Second operand 27 states and 812 transitions. [2024-11-09 15:09:00,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 212 transitions, 1339 flow [2024-11-09 15:09:00,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 212 transitions, 1339 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:09:00,948 INFO L231 Difference]: Finished difference. Result has 122 places, 104 transitions, 527 flow [2024-11-09 15:09:00,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=527, PETRI_PLACES=122, PETRI_TRANSITIONS=104} [2024-11-09 15:09:00,950 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 55 predicate places. [2024-11-09 15:09:00,950 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 104 transitions, 527 flow [2024-11-09 15:09:00,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 27.11627906976744) internal successors, (1166), 43 states have internal predecessors, (1166), 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 15:09:00,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:00,951 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:00,964 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 15:09:01,155 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,SelfDestructingSolverStorable11 [2024-11-09 15:09:01,156 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:09:01,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:01,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1767855017, now seen corresponding path program 1 times [2024-11-09 15:09:01,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:01,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904325239] [2024-11-09 15:09:01,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:01,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:01,212 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:09:01,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:01,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904325239] [2024-11-09 15:09:01,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904325239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:01,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:01,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:09:01,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725000420] [2024-11-09 15:09:01,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:01,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:01,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:01,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:01,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:09:01,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 72 [2024-11-09 15:09:01,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 104 transitions, 527 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 15:09:01,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:01,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 72 [2024-11-09 15:09:01,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:01,806 INFO L124 PetriNetUnfolderBase]: 2434/6124 cut-off events. [2024-11-09 15:09:01,806 INFO L125 PetriNetUnfolderBase]: For 8730/8926 co-relation queries the response was YES. [2024-11-09 15:09:01,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15565 conditions, 6124 events. 2434/6124 cut-off events. For 8730/8926 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 52899 event pairs, 966 based on Foata normal form. 196/5642 useless extension candidates. Maximal degree in co-relation 14381. Up to 2058 conditions per place. [2024-11-09 15:09:01,853 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 107 selfloop transitions, 8 changer transitions 0/145 dead transitions. [2024-11-09 15:09:01,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 145 transitions, 978 flow [2024-11-09 15:09:01,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:01,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:01,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-11-09 15:09:01,855 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6909722222222222 [2024-11-09 15:09:01,855 INFO L175 Difference]: Start difference. First operand has 122 places, 104 transitions, 527 flow. Second operand 4 states and 199 transitions. [2024-11-09 15:09:01,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 145 transitions, 978 flow [2024-11-09 15:09:01,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 145 transitions, 902 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-11-09 15:09:01,867 INFO L231 Difference]: Finished difference. Result has 112 places, 102 transitions, 454 flow [2024-11-09 15:09:01,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=454, PETRI_PLACES=112, PETRI_TRANSITIONS=102} [2024-11-09 15:09:01,868 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 45 predicate places. [2024-11-09 15:09:01,868 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 102 transitions, 454 flow [2024-11-09 15:09:01,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 15:09:01,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:01,870 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:01,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 15:09:01,870 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:09:01,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:01,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1767856042, now seen corresponding path program 1 times [2024-11-09 15:09:01,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:01,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280488676] [2024-11-09 15:09:01,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:01,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:09:02,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:02,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280488676] [2024-11-09 15:09:02,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280488676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:02,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884773251] [2024-11-09 15:09:02,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:02,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:02,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:02,652 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 15:09:02,653 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 15:09:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:02,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 15:09:02,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:02,745 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 15:09:02,769 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 15 treesize of output 1 [2024-11-09 15:09:02,823 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-09 15:09:02,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 33 treesize of output 13 [2024-11-09 15:09:02,884 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-09 15:09:02,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 33 treesize of output 13 [2024-11-09 15:09:02,944 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-09 15:09:02,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 33 treesize of output 13 [2024-11-09 15:09:03,005 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-09 15:09:03,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 33 treesize of output 13 [2024-11-09 15:09:03,036 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 15:09:03,037 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 15:09:03,061 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 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 15:09:03,076 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 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 15:09:03,088 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 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 15:09:03,097 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 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 15:09:03,109 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 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 15:09:03,159 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 17 treesize of output 9 [2024-11-09 15:09:03,217 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:09:03,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:09:03,273 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_387 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_387) c_~o_0~0.base) c_~o_0~0.offset)))) is different from false [2024-11-09 15:09:03,310 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_176| Int) (v_ArrVal_387 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_176|) 0)) (< 0 (+ (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_176| v_ArrVal_387) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 2147483649)))) is different from false