./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.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 37988a2d341c7c9f3fcf434d412d9132bef9023d4105c08959698de2759206e2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:42:37,744 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:42:37,798 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:42:37,803 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:42:37,803 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:42:37,831 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:42:37,832 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:42:37,833 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:42:37,833 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:42:37,834 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:42:37,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:42:37,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:42:37,835 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:42:37,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:42:37,837 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:42:37,837 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:42:37,838 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:42:37,838 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:42:37,838 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:42:37,838 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:42:37,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:42:37,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:42:37,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:42:37,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:42:37,842 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:42:37,842 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:42:37,842 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:42:37,843 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:42:37,843 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:42:37,843 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:42:37,843 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:42:37,843 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:42:37,843 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:42:37,844 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:42:37,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:42:37,844 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:42:37,844 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:42:37,844 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:42:37,844 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:42:37,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:42:37,845 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:42:37,846 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:42:37,846 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:42:37,846 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:42:37,847 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37988a2d341c7c9f3fcf434d412d9132bef9023d4105c08959698de2759206e2 [2024-10-24 23:42:38,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:42:38,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:42:38,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:42:38,053 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:42:38,054 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:42:38,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2024-10-24 23:42:39,318 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:42:39,455 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:42:39,456 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2024-10-24 23:42:39,462 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f69ad7b70/7f12a75667bd4f07813585223df14097/FLAG1ff1fe7ed [2024-10-24 23:42:39,474 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f69ad7b70/7f12a75667bd4f07813585223df14097 [2024-10-24 23:42:39,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:42:39,478 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:42:39,482 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:42:39,482 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:42:39,486 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:42:39,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:42:39" (1/1) ... [2024-10-24 23:42:39,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c64ae2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:39, skipping insertion in model container [2024-10-24 23:42:39,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:42:39" (1/1) ... [2024-10-24 23:42:39,511 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:42:39,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:42:39,690 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:42:39,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:42:39,727 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:42:39,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:39 WrapperNode [2024-10-24 23:42:39,728 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:42:39,729 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:42:39,729 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:42:39,729 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:42:39,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:39" (1/1) ... [2024-10-24 23:42:39,741 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:39" (1/1) ... [2024-10-24 23:42:39,785 INFO L138 Inliner]: procedures = 24, calls = 44, calls flagged for inlining = 17, calls inlined = 29, statements flattened = 372 [2024-10-24 23:42:39,786 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:42:39,787 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:42:39,787 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:42:39,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:42:39,802 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:39" (1/1) ... [2024-10-24 23:42:39,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:39" (1/1) ... [2024-10-24 23:42:39,806 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:39" (1/1) ... [2024-10-24 23:42:39,818 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 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]. [2024-10-24 23:42:39,818 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:39" (1/1) ... [2024-10-24 23:42:39,818 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:39" (1/1) ... [2024-10-24 23:42:39,824 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:39" (1/1) ... [2024-10-24 23:42:39,834 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:39" (1/1) ... [2024-10-24 23:42:39,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:39" (1/1) ... [2024-10-24 23:42:39,837 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:39" (1/1) ... [2024-10-24 23:42:39,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:42:39,840 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:42:39,840 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:42:39,840 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:42:39,841 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:39" (1/1) ... [2024-10-24 23:42:39,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:42:39,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:42:39,871 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) [2024-10-24 23:42:39,876 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 [2024-10-24 23:42:39,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:42:39,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:42:39,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:42:39,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:42:39,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:42:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 23:42:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 23:42:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:42:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:42:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:42:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:42:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 23:42:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 23:42:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 23:42:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:42:39,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:42:39,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:42:39,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:42:39,918 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:42:40,006 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:42:40,007 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:42:40,475 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:42:40,475 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:42:41,134 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:42:41,134 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-24 23:42:41,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:42:41 BoogieIcfgContainer [2024-10-24 23:42:41,134 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:42:41,136 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:42:41,136 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:42:41,139 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:42:41,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:42:39" (1/3) ... [2024-10-24 23:42:41,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d765277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:42:41, skipping insertion in model container [2024-10-24 23:42:41,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:39" (2/3) ... [2024-10-24 23:42:41,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d765277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:42:41, skipping insertion in model container [2024-10-24 23:42:41,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:42:41" (3/3) ... [2024-10-24 23:42:41,140 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2024-10-24 23:42:41,153 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:42:41,153 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2024-10-24 23:42:41,153 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:42:41,318 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 23:42:41,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 92 transitions, 205 flow [2024-10-24 23:42:41,442 INFO L124 PetriNetUnfolderBase]: 5/89 cut-off events. [2024-10-24 23:42:41,443 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 23:42:41,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 89 events. 5/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 374 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2024-10-24 23:42:41,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 92 transitions, 205 flow [2024-10-24 23:42:41,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 87 transitions, 189 flow [2024-10-24 23:42:41,459 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:42:41,464 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;@7171f227, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:42:41,465 INFO L334 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2024-10-24 23:42:41,467 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:42:41,467 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:42:41,467 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:42:41,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:41,468 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:42:41,468 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:42:41,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:41,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1357085, now seen corresponding path program 1 times [2024-10-24 23:42:41,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:41,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951999468] [2024-10-24 23:42:41,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:41,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:41,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:41,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:41,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951999468] [2024-10-24 23:42:41,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951999468] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:42:41,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:42:41,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:42:41,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874988147] [2024-10-24 23:42:41,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:42:41,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:42:41,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:41,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:42:41,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:42:41,744 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 92 [2024-10-24 23:42:41,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 87 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-24 23:42:41,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:41,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 92 [2024-10-24 23:42:41,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:43,567 INFO L124 PetriNetUnfolderBase]: 7417/11809 cut-off events. [2024-10-24 23:42:43,568 INFO L125 PetriNetUnfolderBase]: For 463/463 co-relation queries the response was YES. [2024-10-24 23:42:43,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22694 conditions, 11809 events. 7417/11809 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 90351 event pairs, 6620 based on Foata normal form. 2/6714 useless extension candidates. Maximal degree in co-relation 21763. Up to 10475 conditions per place. [2024-10-24 23:42:43,622 INFO L140 encePairwiseOnDemand]: 66/92 looper letters, 44 selfloop transitions, 6 changer transitions 0/67 dead transitions. [2024-10-24 23:42:43,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 67 transitions, 249 flow [2024-10-24 23:42:43,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:42:43,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:42:43,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2024-10-24 23:42:43,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4076086956521739 [2024-10-24 23:42:43,632 INFO L175 Difference]: Start difference. First operand has 92 places, 87 transitions, 189 flow. Second operand 4 states and 150 transitions. [2024-10-24 23:42:43,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 67 transitions, 249 flow [2024-10-24 23:42:43,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 240 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 23:42:43,643 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 152 flow [2024-10-24 23:42:43,645 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2024-10-24 23:42:43,648 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -22 predicate places. [2024-10-24 23:42:43,650 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 152 flow [2024-10-24 23:42:43,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-24 23:42:43,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:43,650 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-24 23:42:43,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:42:43,651 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:42:43,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:43,652 INFO L85 PathProgramCache]: Analyzing trace with hash 42071051, now seen corresponding path program 1 times [2024-10-24 23:42:43,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:43,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868235619] [2024-10-24 23:42:43,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:43,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:43,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:43,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:43,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868235619] [2024-10-24 23:42:43,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868235619] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:42:43,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:42:43,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:42:43,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87143636] [2024-10-24 23:42:43,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:42:43,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:42:43,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:43,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:42:43,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:42:43,760 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 92 [2024-10-24 23:42:43,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-24 23:42:43,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:43,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 92 [2024-10-24 23:42:43,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:45,407 INFO L124 PetriNetUnfolderBase]: 7419/11817 cut-off events. [2024-10-24 23:42:45,407 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-10-24 23:42:45,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22573 conditions, 11817 events. 7419/11817 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 90311 event pairs, 6620 based on Foata normal form. 2/6724 useless extension candidates. Maximal degree in co-relation 22525. Up to 10484 conditions per place. [2024-10-24 23:42:45,469 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 49 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2024-10-24 23:42:45,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 73 transitions, 286 flow [2024-10-24 23:42:45,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:42:45,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:42:45,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2024-10-24 23:42:45,471 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-10-24 23:42:45,471 INFO L175 Difference]: Start difference. First operand has 70 places, 67 transitions, 152 flow. Second operand 4 states and 138 transitions. [2024-10-24 23:42:45,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 73 transitions, 286 flow [2024-10-24 23:42:45,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 264 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:42:45,476 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 196 flow [2024-10-24 23:42:45,476 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2024-10-24 23:42:45,477 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -19 predicate places. [2024-10-24 23:42:45,477 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 196 flow [2024-10-24 23:42:45,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-24 23:42:45,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:45,478 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:42:45,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 23:42:45,478 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:42:45,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:45,479 INFO L85 PathProgramCache]: Analyzing trace with hash -753520445, now seen corresponding path program 1 times [2024-10-24 23:42:45,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:45,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446128945] [2024-10-24 23:42:45,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:45,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:45,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:45,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446128945] [2024-10-24 23:42:45,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446128945] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:42:45,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:42:45,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:42:45,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458482668] [2024-10-24 23:42:45,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:42:45,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:42:45,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:45,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:42:45,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:42:45,623 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 92 [2024-10-24 23:42:45,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2024-10-24 23:42:45,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:45,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 92 [2024-10-24 23:42:45,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:46,931 INFO L124 PetriNetUnfolderBase]: 7418/11823 cut-off events. [2024-10-24 23:42:46,932 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-10-24 23:42:46,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22598 conditions, 11823 events. 7418/11823 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 90285 event pairs, 6620 based on Foata normal form. 2/6731 useless extension candidates. Maximal degree in co-relation 22537. Up to 10481 conditions per place. [2024-10-24 23:42:47,057 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 49 selfloop transitions, 8 changer transitions 0/76 dead transitions. [2024-10-24 23:42:47,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 324 flow [2024-10-24 23:42:47,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:42:47,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:42:47,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2024-10-24 23:42:47,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38913043478260867 [2024-10-24 23:42:47,063 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 196 flow. Second operand 5 states and 179 transitions. [2024-10-24 23:42:47,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 324 flow [2024-10-24 23:42:47,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 76 transitions, 324 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:42:47,066 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 233 flow [2024-10-24 23:42:47,068 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2024-10-24 23:42:47,069 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -13 predicate places. [2024-10-24 23:42:47,069 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 233 flow [2024-10-24 23:42:47,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2024-10-24 23:42:47,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:47,069 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-24 23:42:47,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 23:42:47,070 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:42:47,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:47,072 INFO L85 PathProgramCache]: Analyzing trace with hash -790393546, now seen corresponding path program 1 times [2024-10-24 23:42:47,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:47,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056790271] [2024-10-24 23:42:47,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:47,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:47,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:47,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:47,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056790271] [2024-10-24 23:42:47,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056790271] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:42:47,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075559964] [2024-10-24 23:42:47,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:47,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:47,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:42:47,149 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) [2024-10-24 23:42:47,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:42:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:47,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:42:47,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:42:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:47,303 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:42:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:47,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075559964] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:42:47,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:42:47,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-24 23:42:47,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924633884] [2024-10-24 23:42:47,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:42:47,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 23:42:47,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:47,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 23:42:47,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-24 23:42:47,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 92 [2024-10-24 23:42:47,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 233 flow. Second operand has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 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) [2024-10-24 23:42:47,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:47,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 92 [2024-10-24 23:42:47,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:48,969 INFO L124 PetriNetUnfolderBase]: 7424/11856 cut-off events. [2024-10-24 23:42:48,970 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2024-10-24 23:42:49,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22726 conditions, 11856 events. 7424/11856 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 90530 event pairs, 6620 based on Foata normal form. 6/6764 useless extension candidates. Maximal degree in co-relation 22610. Up to 10490 conditions per place. [2024-10-24 23:42:49,063 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 51 selfloop transitions, 31 changer transitions 0/99 dead transitions. [2024-10-24 23:42:49,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 99 transitions, 547 flow [2024-10-24 23:42:49,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:42:49,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:42:49,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 279 transitions. [2024-10-24 23:42:49,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3032608695652174 [2024-10-24 23:42:49,066 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 233 flow. Second operand 10 states and 279 transitions. [2024-10-24 23:42:49,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 99 transitions, 547 flow [2024-10-24 23:42:49,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 99 transitions, 521 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-10-24 23:42:49,072 INFO L231 Difference]: Finished difference. Result has 89 places, 99 transitions, 463 flow [2024-10-24 23:42:49,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=463, PETRI_PLACES=89, PETRI_TRANSITIONS=99} [2024-10-24 23:42:49,073 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -3 predicate places. [2024-10-24 23:42:49,073 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 99 transitions, 463 flow [2024-10-24 23:42:49,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 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) [2024-10-24 23:42:49,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:49,074 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:42:49,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 23:42:49,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:49,282 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:42:49,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:49,283 INFO L85 PathProgramCache]: Analyzing trace with hash 791167156, now seen corresponding path program 1 times [2024-10-24 23:42:49,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:49,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935563150] [2024-10-24 23:42:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:49,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:49,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:42:49,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:49,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935563150] [2024-10-24 23:42:49,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935563150] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:42:49,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768073244] [2024-10-24 23:42:49,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:49,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:49,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:42:49,604 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) [2024-10-24 23:42:49,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:42:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:49,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-24 23:42:49,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:42:49,779 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 [2024-10-24 23:42:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:42:49,819 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:42:49,872 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 16 treesize of output 14 [2024-10-24 23:42:49,876 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 22 treesize of output 20 [2024-10-24 23:42:49,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:42:49,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768073244] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:42:49,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:42:49,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-10-24 23:42:49,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169593472] [2024-10-24 23:42:49,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:42:49,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 23:42:49,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:49,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 23:42:49,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-24 23:42:49,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 92 [2024-10-24 23:42:49,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 99 transitions, 463 flow. Second operand has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 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) [2024-10-24 23:42:49,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:49,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 92 [2024-10-24 23:42:49,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:52,529 INFO L124 PetriNetUnfolderBase]: 12898/21057 cut-off events. [2024-10-24 23:42:52,529 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2024-10-24 23:42:52,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39757 conditions, 21057 events. 12898/21057 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 167883 event pairs, 3874 based on Foata normal form. 0/12032 useless extension candidates. Maximal degree in co-relation 39654. Up to 7336 conditions per place. [2024-10-24 23:42:52,695 INFO L140 encePairwiseOnDemand]: 75/92 looper letters, 119 selfloop transitions, 24 changer transitions 0/162 dead transitions. [2024-10-24 23:42:52,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 162 transitions, 881 flow [2024-10-24 23:42:52,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 23:42:52,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 23:42:52,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 309 transitions. [2024-10-24 23:42:52,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41983695652173914 [2024-10-24 23:42:52,703 INFO L175 Difference]: Start difference. First operand has 89 places, 99 transitions, 463 flow. Second operand 8 states and 309 transitions. [2024-10-24 23:42:52,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 162 transitions, 881 flow [2024-10-24 23:42:52,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 162 transitions, 820 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-10-24 23:42:52,708 INFO L231 Difference]: Finished difference. Result has 95 places, 107 transitions, 499 flow [2024-10-24 23:42:52,708 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=499, PETRI_PLACES=95, PETRI_TRANSITIONS=107} [2024-10-24 23:42:52,710 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 3 predicate places. [2024-10-24 23:42:52,710 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 107 transitions, 499 flow [2024-10-24 23:42:52,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 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) [2024-10-24 23:42:52,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:52,711 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:42:52,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 23:42:52,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:52,912 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:42:52,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:52,912 INFO L85 PathProgramCache]: Analyzing trace with hash 791167157, now seen corresponding path program 1 times [2024-10-24 23:42:52,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:52,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379383243] [2024-10-24 23:42:52,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:52,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:53,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:42:53,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:53,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379383243] [2024-10-24 23:42:53,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379383243] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:42:53,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709957958] [2024-10-24 23:42:53,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:53,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:53,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:42:53,106 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) [2024-10-24 23:42:53,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:42:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:53,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-24 23:42:53,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:42:53,235 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 [2024-10-24 23:42:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:42:53,263 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:42:53,301 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 14 treesize of output 12 [2024-10-24 23:42:53,304 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 18 treesize of output 16 [2024-10-24 23:42:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:42:53,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709957958] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:42:53,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:42:53,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-10-24 23:42:53,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611785445] [2024-10-24 23:42:53,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:42:53,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 23:42:53,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:53,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 23:42:53,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-24 23:42:53,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 92 [2024-10-24 23:42:53,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 107 transitions, 499 flow. Second operand has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 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) [2024-10-24 23:42:53,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:53,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 92 [2024-10-24 23:42:53,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:55,836 INFO L124 PetriNetUnfolderBase]: 12247/20021 cut-off events. [2024-10-24 23:42:55,837 INFO L125 PetriNetUnfolderBase]: For 4170/4170 co-relation queries the response was YES. [2024-10-24 23:42:55,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44682 conditions, 20021 events. 12247/20021 cut-off events. For 4170/4170 co-relation queries the response was YES. Maximal size of possible extension queue 1301. Compared 159185 event pairs, 3506 based on Foata normal form. 0/11834 useless extension candidates. Maximal degree in co-relation 44584. Up to 6419 conditions per place. [2024-10-24 23:42:55,940 INFO L140 encePairwiseOnDemand]: 75/92 looper letters, 118 selfloop transitions, 24 changer transitions 0/161 dead transitions. [2024-10-24 23:42:55,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 161 transitions, 895 flow [2024-10-24 23:42:55,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 23:42:55,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 23:42:55,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 308 transitions. [2024-10-24 23:42:55,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41847826086956524 [2024-10-24 23:42:55,943 INFO L175 Difference]: Start difference. First operand has 95 places, 107 transitions, 499 flow. Second operand 8 states and 308 transitions. [2024-10-24 23:42:55,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 161 transitions, 895 flow [2024-10-24 23:42:55,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 161 transitions, 882 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:42:55,953 INFO L231 Difference]: Finished difference. Result has 99 places, 106 transitions, 530 flow [2024-10-24 23:42:55,953 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=530, PETRI_PLACES=99, PETRI_TRANSITIONS=106} [2024-10-24 23:42:55,953 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 7 predicate places. [2024-10-24 23:42:55,953 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 106 transitions, 530 flow [2024-10-24 23:42:55,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 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) [2024-10-24 23:42:55,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:55,954 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:42:55,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 23:42:56,154 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 [2024-10-24 23:42:56,155 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:42:56,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:56,155 INFO L85 PathProgramCache]: Analyzing trace with hash 791167159, now seen corresponding path program 1 times [2024-10-24 23:42:56,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:56,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511589814] [2024-10-24 23:42:56,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:56,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:56,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:56,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511589814] [2024-10-24 23:42:56,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511589814] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:42:56,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560350277] [2024-10-24 23:42:56,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:56,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:56,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:42:56,456 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) [2024-10-24 23:42:56,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:42:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:56,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-24 23:42:56,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:42:56,588 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 [2024-10-24 23:42:56,606 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 [2024-10-24 23:42:56,634 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:42:56,634 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 [2024-10-24 23:42:56,653 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 [2024-10-24 23:42:56,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:56,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:42:56,787 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:42:56,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-10-24 23:42:56,794 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:42:56,795 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 39 treesize of output 35 [2024-10-24 23:42:56,801 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 11 treesize of output 9 [2024-10-24 23:42:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:56,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560350277] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:42:56,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:42:56,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2024-10-24 23:42:56,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103625143] [2024-10-24 23:42:56,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:42:56,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 23:42:56,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:56,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 23:42:56,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=189, Unknown=3, NotChecked=0, Total=240 [2024-10-24 23:42:56,850 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-10-24 23:42:56,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 106 transitions, 530 flow. Second operand has 16 states, 16 states have (on average 24.875) internal successors, (398), 16 states have internal predecessors, (398), 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) [2024-10-24 23:42:56,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:56,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-10-24 23:42:56,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:00,304 INFO L124 PetriNetUnfolderBase]: 12898/20668 cut-off events. [2024-10-24 23:43:00,305 INFO L125 PetriNetUnfolderBase]: For 7382/7382 co-relation queries the response was YES. [2024-10-24 23:43:00,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48670 conditions, 20668 events. 12898/20668 cut-off events. For 7382/7382 co-relation queries the response was YES. Maximal size of possible extension queue 1337. Compared 160602 event pairs, 5487 based on Foata normal form. 0/12630 useless extension candidates. Maximal degree in co-relation 48571. Up to 10743 conditions per place. [2024-10-24 23:43:00,618 INFO L140 encePairwiseOnDemand]: 80/92 looper letters, 125 selfloop transitions, 19 changer transitions 0/162 dead transitions. [2024-10-24 23:43:00,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 162 transitions, 939 flow [2024-10-24 23:43:00,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 23:43:00,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 23:43:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 374 transitions. [2024-10-24 23:43:00,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3695652173913043 [2024-10-24 23:43:00,621 INFO L175 Difference]: Start difference. First operand has 99 places, 106 transitions, 530 flow. Second operand 11 states and 374 transitions. [2024-10-24 23:43:00,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 162 transitions, 939 flow [2024-10-24 23:43:00,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 162 transitions, 910 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 23:43:00,637 INFO L231 Difference]: Finished difference. Result has 104 places, 106 transitions, 542 flow [2024-10-24 23:43:00,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=542, PETRI_PLACES=104, PETRI_TRANSITIONS=106} [2024-10-24 23:43:00,638 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 12 predicate places. [2024-10-24 23:43:00,638 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 106 transitions, 542 flow [2024-10-24 23:43:00,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 24.875) internal successors, (398), 16 states have internal predecessors, (398), 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) [2024-10-24 23:43:00,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:00,639 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:00,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 23:43:00,843 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 [2024-10-24 23:43:00,843 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:00,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:00,844 INFO L85 PathProgramCache]: Analyzing trace with hash 791167160, now seen corresponding path program 1 times [2024-10-24 23:43:00,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:00,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995076874] [2024-10-24 23:43:00,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:00,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:01,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:01,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:01,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995076874] [2024-10-24 23:43:01,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995076874] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:01,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852205017] [2024-10-24 23:43:01,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:01,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:01,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:01,266 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) [2024-10-24 23:43:01,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 23:43:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:01,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-24 23:43:01,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:01,383 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 [2024-10-24 23:43:01,394 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 [2024-10-24 23:43:01,413 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:43:01,414 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 [2024-10-24 23:43:01,426 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 [2024-10-24 23:43:01,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:01,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:01,485 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_98 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_98) c_~A~0.base) c_~A~0.offset) 2147483648)) is different from false [2024-10-24 23:43:01,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:43:01,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-10-24 23:43:01,520 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:43:01,521 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 [2024-10-24 23:43:01,524 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 [2024-10-24 23:43:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-10-24 23:43:01,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852205017] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:01,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:01,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2024-10-24 23:43:01,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239411228] [2024-10-24 23:43:01,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:01,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 23:43:01,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:01,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 23:43:01,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=167, Unknown=1, NotChecked=26, Total=240 [2024-10-24 23:43:01,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-10-24 23:43:01,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 106 transitions, 542 flow. Second operand has 16 states, 16 states have (on average 24.875) internal successors, (398), 16 states have internal predecessors, (398), 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) [2024-10-24 23:43:01,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:01,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-10-24 23:43:01,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:03,809 INFO L124 PetriNetUnfolderBase]: 12247/20005 cut-off events. [2024-10-24 23:43:03,809 INFO L125 PetriNetUnfolderBase]: For 9310/9310 co-relation queries the response was YES. [2024-10-24 23:43:03,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47603 conditions, 20005 events. 12247/20005 cut-off events. For 9310/9310 co-relation queries the response was YES. Maximal size of possible extension queue 1339. Compared 158454 event pairs, 5119 based on Foata normal form. 0/12783 useless extension candidates. Maximal degree in co-relation 47503. Up to 10743 conditions per place. [2024-10-24 23:43:03,919 INFO L140 encePairwiseOnDemand]: 80/92 looper letters, 124 selfloop transitions, 19 changer transitions 0/161 dead transitions. [2024-10-24 23:43:03,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 161 transitions, 942 flow [2024-10-24 23:43:03,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 23:43:03,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 23:43:03,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 373 transitions. [2024-10-24 23:43:03,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3685770750988142 [2024-10-24 23:43:03,921 INFO L175 Difference]: Start difference. First operand has 104 places, 106 transitions, 542 flow. Second operand 11 states and 373 transitions. [2024-10-24 23:43:03,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 161 transitions, 942 flow [2024-10-24 23:43:03,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 161 transitions, 905 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-24 23:43:03,942 INFO L231 Difference]: Finished difference. Result has 108 places, 105 transitions, 539 flow [2024-10-24 23:43:03,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=539, PETRI_PLACES=108, PETRI_TRANSITIONS=105} [2024-10-24 23:43:03,946 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 16 predicate places. [2024-10-24 23:43:03,946 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 105 transitions, 539 flow [2024-10-24 23:43:03,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 24.875) internal successors, (398), 16 states have internal predecessors, (398), 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) [2024-10-24 23:43:03,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:03,946 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:03,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 23:43:04,147 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 [2024-10-24 23:43:04,147 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:04,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:04,148 INFO L85 PathProgramCache]: Analyzing trace with hash 791167165, now seen corresponding path program 1 times [2024-10-24 23:43:04,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:04,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614711083] [2024-10-24 23:43:04,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:04,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:43:04,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:04,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614711083] [2024-10-24 23:43:04,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614711083] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:04,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:04,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:43:04,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970947546] [2024-10-24 23:43:04,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:04,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:43:04,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:04,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:43:04,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:43:04,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-10-24 23:43:04,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 539 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-10-24 23:43:04,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:04,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-10-24 23:43:04,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:07,378 INFO L124 PetriNetUnfolderBase]: 11583/18762 cut-off events. [2024-10-24 23:43:07,379 INFO L125 PetriNetUnfolderBase]: For 11389/11389 co-relation queries the response was YES. [2024-10-24 23:43:07,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45273 conditions, 18762 events. 11583/18762 cut-off events. For 11389/11389 co-relation queries the response was YES. Maximal size of possible extension queue 1531. Compared 151170 event pairs, 2385 based on Foata normal form. 0/12333 useless extension candidates. Maximal degree in co-relation 45173. Up to 12573 conditions per place. [2024-10-24 23:43:07,559 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 113 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-10-24 23:43:07,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 133 transitions, 826 flow [2024-10-24 23:43:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:43:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:43:07,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-10-24 23:43:07,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2024-10-24 23:43:07,561 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 539 flow. Second operand 3 states and 152 transitions. [2024-10-24 23:43:07,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 133 transitions, 826 flow [2024-10-24 23:43:07,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 133 transitions, 789 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-10-24 23:43:07,583 INFO L231 Difference]: Finished difference. Result has 102 places, 104 transitions, 504 flow [2024-10-24 23:43:07,584 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=102, PETRI_TRANSITIONS=104} [2024-10-24 23:43:07,584 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 10 predicate places. [2024-10-24 23:43:07,584 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 104 transitions, 504 flow [2024-10-24 23:43:07,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-10-24 23:43:07,584 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:07,585 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:07,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 23:43:07,585 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:07,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:07,585 INFO L85 PathProgramCache]: Analyzing trace with hash 23244557, now seen corresponding path program 1 times [2024-10-24 23:43:07,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:07,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598151088] [2024-10-24 23:43:07,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:07,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:07,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:07,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598151088] [2024-10-24 23:43:07,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598151088] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:07,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687981020] [2024-10-24 23:43:07,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:07,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:07,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:07,667 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) [2024-10-24 23:43:07,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 23:43:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:07,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 23:43:07,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:07,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:07,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:07,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687981020] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:07,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:07,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-10-24 23:43:07,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469017726] [2024-10-24 23:43:07,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:07,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 23:43:07,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:07,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 23:43:07,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-10-24 23:43:08,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 92 [2024-10-24 23:43:08,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 104 transitions, 504 flow. Second operand has 17 states, 17 states have (on average 20.705882352941178) internal successors, (352), 17 states have internal predecessors, (352), 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) [2024-10-24 23:43:08,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:08,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 92 [2024-10-24 23:43:08,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:10,562 INFO L124 PetriNetUnfolderBase]: 13671/21795 cut-off events. [2024-10-24 23:43:10,563 INFO L125 PetriNetUnfolderBase]: For 10128/10128 co-relation queries the response was YES. [2024-10-24 23:43:10,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54027 conditions, 21795 events. 13671/21795 cut-off events. For 10128/10128 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 169068 event pairs, 11286 based on Foata normal form. 0/14140 useless extension candidates. Maximal degree in co-relation 53893. Up to 15849 conditions per place. [2024-10-24 23:43:10,655 INFO L140 encePairwiseOnDemand]: 82/92 looper letters, 115 selfloop transitions, 51 changer transitions 0/183 dead transitions. [2024-10-24 23:43:10,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 183 transitions, 1208 flow [2024-10-24 23:43:10,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 23:43:10,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 23:43:10,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 396 transitions. [2024-10-24 23:43:10,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30745341614906835 [2024-10-24 23:43:10,658 INFO L175 Difference]: Start difference. First operand has 102 places, 104 transitions, 504 flow. Second operand 14 states and 396 transitions. [2024-10-24 23:43:10,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 183 transitions, 1208 flow [2024-10-24 23:43:10,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 183 transitions, 1206 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:43:10,663 INFO L231 Difference]: Finished difference. Result has 118 places, 120 transitions, 762 flow [2024-10-24 23:43:10,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=762, PETRI_PLACES=118, PETRI_TRANSITIONS=120} [2024-10-24 23:43:10,663 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 26 predicate places. [2024-10-24 23:43:10,663 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 120 transitions, 762 flow [2024-10-24 23:43:10,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.705882352941178) internal successors, (352), 17 states have internal predecessors, (352), 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) [2024-10-24 23:43:10,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:10,664 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-24 23:43:10,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 23:43:10,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:10,865 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:10,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:10,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1712704437, now seen corresponding path program 2 times [2024-10-24 23:43:10,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:10,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734981487] [2024-10-24 23:43:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:10,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:10,957 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:10,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:10,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734981487] [2024-10-24 23:43:10,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734981487] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:10,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146370720] [2024-10-24 23:43:10,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:43:10,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:10,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:10,959 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) [2024-10-24 23:43:10,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 23:43:11,066 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:43:11,067 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:43:11,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:43:11,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:11,101 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:43:11,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:11,120 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:43:11,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146370720] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:11,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:11,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-24 23:43:11,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021411033] [2024-10-24 23:43:11,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:11,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 23:43:11,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:11,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 23:43:11,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-24 23:43:11,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 92 [2024-10-24 23:43:11,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 120 transitions, 762 flow. Second operand has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 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) [2024-10-24 23:43:11,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:11,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 92 [2024-10-24 23:43:11,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:13,395 INFO L124 PetriNetUnfolderBase]: 12745/20784 cut-off events. [2024-10-24 23:43:13,395 INFO L125 PetriNetUnfolderBase]: For 12359/12359 co-relation queries the response was YES. [2024-10-24 23:43:13,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53672 conditions, 20784 events. 12745/20784 cut-off events. For 12359/12359 co-relation queries the response was YES. Maximal size of possible extension queue 1442. Compared 165308 event pairs, 11556 based on Foata normal form. 5/13863 useless extension candidates. Maximal degree in co-relation 53446. Up to 18205 conditions per place. [2024-10-24 23:43:13,536 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 55 selfloop transitions, 57 changer transitions 0/130 dead transitions. [2024-10-24 23:43:13,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 130 transitions, 1087 flow [2024-10-24 23:43:13,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 23:43:13,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-24 23:43:13,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 561 transitions. [2024-10-24 23:43:13,540 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.25407608695652173 [2024-10-24 23:43:13,540 INFO L175 Difference]: Start difference. First operand has 118 places, 120 transitions, 762 flow. Second operand 24 states and 561 transitions. [2024-10-24 23:43:13,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 130 transitions, 1087 flow [2024-10-24 23:43:13,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 130 transitions, 1058 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-10-24 23:43:13,581 INFO L231 Difference]: Finished difference. Result has 140 places, 130 transitions, 980 flow [2024-10-24 23:43:13,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=980, PETRI_PLACES=140, PETRI_TRANSITIONS=130} [2024-10-24 23:43:13,582 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 48 predicate places. [2024-10-24 23:43:13,583 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 130 transitions, 980 flow [2024-10-24 23:43:13,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 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) [2024-10-24 23:43:13,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:13,583 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:13,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 23:43:13,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:13,788 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:13,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:13,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1118034286, now seen corresponding path program 1 times [2024-10-24 23:43:13,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:13,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784003576] [2024-10-24 23:43:13,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:13,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:13,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:43:13,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:13,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784003576] [2024-10-24 23:43:13,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784003576] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:13,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:13,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:43:13,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155298280] [2024-10-24 23:43:13,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:13,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:43:13,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:13,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:43:13,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:43:13,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 92 [2024-10-24 23:43:13,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 130 transitions, 980 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:13,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:13,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 92 [2024-10-24 23:43:13,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:16,456 INFO L124 PetriNetUnfolderBase]: 14357/23748 cut-off events. [2024-10-24 23:43:16,456 INFO L125 PetriNetUnfolderBase]: For 11855/11927 co-relation queries the response was YES. [2024-10-24 23:43:16,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59625 conditions, 23748 events. 14357/23748 cut-off events. For 11855/11927 co-relation queries the response was YES. Maximal size of possible extension queue 1501. Compared 195402 event pairs, 10802 based on Foata normal form. 680/16934 useless extension candidates. Maximal degree in co-relation 59474. Up to 17102 conditions per place. [2024-10-24 23:43:16,636 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 168 selfloop transitions, 4 changer transitions 0/189 dead transitions. [2024-10-24 23:43:16,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 189 transitions, 1472 flow [2024-10-24 23:43:16,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:43:16,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:43:16,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2024-10-24 23:43:16,637 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5380434782608695 [2024-10-24 23:43:16,637 INFO L175 Difference]: Start difference. First operand has 140 places, 130 transitions, 980 flow. Second operand 4 states and 198 transitions. [2024-10-24 23:43:16,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 189 transitions, 1472 flow [2024-10-24 23:43:16,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 189 transitions, 1328 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-10-24 23:43:16,655 INFO L231 Difference]: Finished difference. Result has 134 places, 131 transitions, 857 flow [2024-10-24 23:43:16,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=857, PETRI_PLACES=134, PETRI_TRANSITIONS=131} [2024-10-24 23:43:16,655 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 42 predicate places. [2024-10-24 23:43:16,656 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 131 transitions, 857 flow [2024-10-24 23:43:16,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:16,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:16,656 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:16,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 23:43:16,656 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:16,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:16,657 INFO L85 PathProgramCache]: Analyzing trace with hash 815729952, now seen corresponding path program 1 times [2024-10-24 23:43:16,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:16,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247693846] [2024-10-24 23:43:16,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:16,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:17,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:17,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247693846] [2024-10-24 23:43:17,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247693846] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:17,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457268264] [2024-10-24 23:43:17,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:17,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:17,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:17,041 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) [2024-10-24 23:43:17,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 23:43:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:17,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-24 23:43:17,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:17,177 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 [2024-10-24 23:43:17,191 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 [2024-10-24 23:43:17,243 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:43:17,243 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 [2024-10-24 23:43:17,252 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 [2024-10-24 23:43:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:17,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:17,365 WARN L851 $PredicateComparison]: unable to prove that (forall ((~M~0 Int) (v_ArrVal_173 (Array Int Int))) (or (< ~M~0 0) (< c_~N~0 (+ ~M~0 1)) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_173) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))))) is different from false [2024-10-24 23:43:17,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:43:17,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2024-10-24 23:43:17,466 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:43:17,466 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 47 treesize of output 39 [2024-10-24 23:43:17,471 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 15 treesize of output 9 [2024-10-24 23:43:17,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-10-24 23:43:17,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457268264] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:17,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:17,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-10-24 23:43:17,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93978897] [2024-10-24 23:43:17,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:17,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-24 23:43:17,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:17,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-24 23:43:17,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=229, Unknown=1, NotChecked=30, Total=306 [2024-10-24 23:43:17,540 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 92 [2024-10-24 23:43:17,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 131 transitions, 857 flow. Second operand has 18 states, 18 states have (on average 17.11111111111111) internal successors, (308), 18 states have internal predecessors, (308), 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) [2024-10-24 23:43:17,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:17,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 92 [2024-10-24 23:43:17,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:27,889 INFO L124 PetriNetUnfolderBase]: 50244/80307 cut-off events. [2024-10-24 23:43:27,889 INFO L125 PetriNetUnfolderBase]: For 69352/69352 co-relation queries the response was YES. [2024-10-24 23:43:28,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214614 conditions, 80307 events. 50244/80307 cut-off events. For 69352/69352 co-relation queries the response was YES. Maximal size of possible extension queue 2712. Compared 674847 event pairs, 30686 based on Foata normal form. 0/53009 useless extension candidates. Maximal degree in co-relation 214423. Up to 22500 conditions per place. [2024-10-24 23:43:28,583 INFO L140 encePairwiseOnDemand]: 80/92 looper letters, 296 selfloop transitions, 84 changer transitions 4/397 dead transitions. [2024-10-24 23:43:28,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 397 transitions, 2914 flow [2024-10-24 23:43:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-24 23:43:28,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-24 23:43:28,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 710 transitions. [2024-10-24 23:43:28,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.285829307568438 [2024-10-24 23:43:28,591 INFO L175 Difference]: Start difference. First operand has 134 places, 131 transitions, 857 flow. Second operand 27 states and 710 transitions. [2024-10-24 23:43:28,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 397 transitions, 2914 flow [2024-10-24 23:43:28,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 397 transitions, 2866 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:43:28,646 INFO L231 Difference]: Finished difference. Result has 161 places, 157 transitions, 1242 flow [2024-10-24 23:43:28,646 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1242, PETRI_PLACES=161, PETRI_TRANSITIONS=157} [2024-10-24 23:43:28,646 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 69 predicate places. [2024-10-24 23:43:28,646 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 157 transitions, 1242 flow [2024-10-24 23:43:28,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.11111111111111) internal successors, (308), 18 states have internal predecessors, (308), 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) [2024-10-24 23:43:28,647 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:28,647 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:28,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 23:43:28,850 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,SelfDestructingSolverStorable12 [2024-10-24 23:43:28,851 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:28,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:28,852 INFO L85 PathProgramCache]: Analyzing trace with hash 815729953, now seen corresponding path program 1 times [2024-10-24 23:43:28,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:28,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547870770] [2024-10-24 23:43:28,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:28,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:29,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:29,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547870770] [2024-10-24 23:43:29,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547870770] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:29,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501700775] [2024-10-24 23:43:29,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:29,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:29,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:29,154 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) [2024-10-24 23:43:29,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 23:43:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:29,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-24 23:43:29,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:29,296 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 [2024-10-24 23:43:29,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-24 23:43:29,397 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:43:29,398 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 [2024-10-24 23:43:29,423 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 20 treesize of output 15 [2024-10-24 23:43:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:29,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:29,814 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:43:29,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-10-24 23:43:29,822 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:43:29,823 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 41 treesize of output 33 [2024-10-24 23:43:29,827 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 13 treesize of output 7 [2024-10-24 23:43:29,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:29,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501700775] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:29,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:29,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-10-24 23:43:29,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926857874] [2024-10-24 23:43:29,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:29,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-24 23:43:29,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:29,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-24 23:43:29,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=437, Unknown=1, NotChecked=0, Total=506 [2024-10-24 23:43:29,956 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 92 [2024-10-24 23:43:29,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 157 transitions, 1242 flow. Second operand has 23 states, 23 states have (on average 17.217391304347824) internal successors, (396), 23 states have internal predecessors, (396), 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) [2024-10-24 23:43:29,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:29,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 92 [2024-10-24 23:43:29,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:35,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 23:43:40,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 23:43:44,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 23:43:54,216 INFO L124 PetriNetUnfolderBase]: 49590/79633 cut-off events. [2024-10-24 23:43:54,216 INFO L125 PetriNetUnfolderBase]: For 69614/69614 co-relation queries the response was YES. [2024-10-24 23:43:54,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222056 conditions, 79633 events. 49590/79633 cut-off events. For 69614/69614 co-relation queries the response was YES. Maximal size of possible extension queue 2638. Compared 672116 event pairs, 30686 based on Foata normal form. 654/57958 useless extension candidates. Maximal degree in co-relation 221842. Up to 21965 conditions per place. [2024-10-24 23:43:55,225 INFO L140 encePairwiseOnDemand]: 80/92 looper letters, 392 selfloop transitions, 88 changer transitions 8/501 dead transitions. [2024-10-24 23:43:55,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 501 transitions, 3838 flow [2024-10-24 23:43:55,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-24 23:43:55,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-10-24 23:43:55,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 863 transitions. [2024-10-24 23:43:55,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3025946704067321 [2024-10-24 23:43:55,227 INFO L175 Difference]: Start difference. First operand has 161 places, 157 transitions, 1242 flow. Second operand 31 states and 863 transitions. [2024-10-24 23:43:55,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 501 transitions, 3838 flow [2024-10-24 23:43:55,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 501 transitions, 3772 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-10-24 23:43:55,396 INFO L231 Difference]: Finished difference. Result has 187 places, 161 transitions, 1377 flow [2024-10-24 23:43:55,397 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1377, PETRI_PLACES=187, PETRI_TRANSITIONS=161} [2024-10-24 23:43:55,397 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 95 predicate places. [2024-10-24 23:43:55,397 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 161 transitions, 1377 flow [2024-10-24 23:43:55,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 17.217391304347824) internal successors, (396), 23 states have internal predecessors, (396), 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) [2024-10-24 23:43:55,398 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:55,398 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:55,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 23:43:55,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-24 23:43:55,599 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:55,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:55,599 INFO L85 PathProgramCache]: Analyzing trace with hash 815729958, now seen corresponding path program 1 times [2024-10-24 23:43:55,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:55,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626846488] [2024-10-24 23:43:55,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:55,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:55,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:43:55,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:55,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626846488] [2024-10-24 23:43:55,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626846488] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:55,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:55,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:43:55,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889259990] [2024-10-24 23:43:55,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:55,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:43:55,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:55,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:43:55,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:43:55,678 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 92 [2024-10-24 23:43:55,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 161 transitions, 1377 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-10-24 23:43:55,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:55,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 92 [2024-10-24 23:43:55,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand