./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/loop-tiling-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 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/loop-tiling-eq.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 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 22:00:29,409 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 22:00:29,480 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 22:00:29,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 22:00:29,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 22:00:29,508 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 22:00:29,509 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 22:00:29,509 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 22:00:29,510 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 22:00:29,510 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 22:00:29,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 22:00:29,511 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 22:00:29,512 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 22:00:29,512 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 22:00:29,512 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 22:00:29,513 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 22:00:29,515 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 22:00:29,516 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 22:00:29,516 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 22:00:29,516 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 22:00:29,517 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 22:00:29,517 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 22:00:29,518 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 22:00:29,518 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 22:00:29,518 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 22:00:29,518 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 22:00:29,522 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 22:00:29,522 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 22:00:29,523 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 22:00:29,523 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 22:00:29,523 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 22:00:29,523 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 22:00:29,523 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 22:00:29,524 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 22:00:29,524 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:00:29,524 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 22:00:29,524 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 22:00:29,525 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 22:00:29,525 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 22:00:29,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 22:00:29,527 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 22:00:29,527 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 22:00:29,527 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 22:00:29,528 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 22:00:29,528 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2024-11-20 22:00:29,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 22:00:29,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 22:00:29,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 22:00:29,799 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 22:00:29,800 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 22:00:29,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2024-11-20 22:00:31,250 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 22:00:31,455 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 22:00:31,455 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2024-11-20 22:00:31,464 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5015815e/37d5133974b54002a8fc17e51a9fe8b6/FLAG0a6e696a1 [2024-11-20 22:00:31,476 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5015815e/37d5133974b54002a8fc17e51a9fe8b6 [2024-11-20 22:00:31,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 22:00:31,480 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 22:00:31,482 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 22:00:31,482 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 22:00:31,486 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 22:00:31,487 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:00:31" (1/1) ... [2024-11-20 22:00:31,488 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b1e87a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:31, skipping insertion in model container [2024-11-20 22:00:31,488 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:00:31" (1/1) ... [2024-11-20 22:00:31,510 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 22:00:31,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:00:31,721 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 22:00:31,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:00:31,762 INFO L204 MainTranslator]: Completed translation [2024-11-20 22:00:31,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:31 WrapperNode [2024-11-20 22:00:31,763 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 22:00:31,764 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 22:00:31,764 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 22:00:31,764 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 22:00:31,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:31" (1/1) ... [2024-11-20 22:00:31,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:31" (1/1) ... [2024-11-20 22:00:31,808 INFO L138 Inliner]: procedures = 24, calls = 32, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 206 [2024-11-20 22:00:31,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 22:00:31,809 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 22:00:31,809 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 22:00:31,809 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 22:00:31,818 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:31" (1/1) ... [2024-11-20 22:00:31,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:31" (1/1) ... [2024-11-20 22:00:31,822 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:31" (1/1) ... [2024-11-20 22:00:31,844 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 9, 3]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 6 writes are split as follows [0, 5, 1]. [2024-11-20 22:00:31,844 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:31" (1/1) ... [2024-11-20 22:00:31,844 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:31" (1/1) ... [2024-11-20 22:00:31,859 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:31" (1/1) ... [2024-11-20 22:00:31,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:31" (1/1) ... [2024-11-20 22:00:31,871 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:31" (1/1) ... [2024-11-20 22:00:31,877 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:31" (1/1) ... [2024-11-20 22:00:31,882 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 22:00:31,883 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 22:00:31,883 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 22:00:31,883 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 22:00:31,884 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:31" (1/1) ... [2024-11-20 22:00:31,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:00:31,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:00:31,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 22:00:31,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 22:00:31,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 22:00:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 22:00:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-20 22:00:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 22:00:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 22:00:31,979 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 22:00:32,002 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 22:00:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 22:00:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 22:00:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 22:00:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 22:00:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 22:00:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 22:00:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-20 22:00:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 22:00:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 22:00:32,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 22:00:32,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 22:00:32,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 22:00:32,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 22:00:32,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 22:00:32,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 22:00:32,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 22:00:32,018 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 22:00:32,204 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 22:00:32,208 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 22:00:32,724 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 22:00:32,724 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 22:00:33,049 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 22:00:33,050 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-20 22:00:33,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:00:33 BoogieIcfgContainer [2024-11-20 22:00:33,050 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 22:00:33,055 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 22:00:33,055 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 22:00:33,058 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 22:00:33,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:00:31" (1/3) ... [2024-11-20 22:00:33,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7daa97fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:00:33, skipping insertion in model container [2024-11-20 22:00:33,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:00:31" (2/3) ... [2024-11-20 22:00:33,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7daa97fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:00:33, skipping insertion in model container [2024-11-20 22:00:33,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:00:33" (3/3) ... [2024-11-20 22:00:33,062 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2024-11-20 22:00:33,081 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 22:00:33,081 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-11-20 22:00:33,081 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 22:00:33,150 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 22:00:33,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 81 transitions, 176 flow [2024-11-20 22:00:33,232 INFO L124 PetriNetUnfolderBase]: 8/79 cut-off events. [2024-11-20 22:00:33,234 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 22:00:33,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 79 events. 8/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-11-20 22:00:33,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 81 transitions, 176 flow [2024-11-20 22:00:33,242 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 78 transitions, 168 flow [2024-11-20 22:00:33,277 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 22:00:33,284 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;@9f09559, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 22:00:33,285 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-20 22:00:33,289 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 22:00:33,289 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-20 22:00:33,289 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 22:00:33,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:33,290 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-20 22:00:33,290 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:33,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:33,296 INFO L85 PathProgramCache]: Analyzing trace with hash 776698, now seen corresponding path program 1 times [2024-11-20 22:00:33,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:33,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020707467] [2024-11-20 22:00:33,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:33,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 22:00:33,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400420261] [2024-11-20 22:00:33,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:33,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:33,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:00:33,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:00:33,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 22:00:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:33,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:00:33,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:00:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:33,645 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:00:33,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:33,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020707467] [2024-11-20 22:00:33,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 22:00:33,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400420261] [2024-11-20 22:00:33,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400420261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:33,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:33,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 22:00:33,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470013764] [2024-11-20 22:00:33,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:33,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:00:33,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:33,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:00:33,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:00:33,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 81 [2024-11-20 22:00:33,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:33,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:33,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 81 [2024-11-20 22:00:33,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:34,050 INFO L124 PetriNetUnfolderBase]: 226/661 cut-off events. [2024-11-20 22:00:34,051 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-20 22:00:34,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 661 events. 226/661 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3866 event pairs, 150 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 446. Up to 199 conditions per place. [2024-11-20 22:00:34,058 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 69 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2024-11-20 22:00:34,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 111 transitions, 392 flow [2024-11-20 22:00:34,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 22:00:34,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 22:00:34,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 275 transitions. [2024-11-20 22:00:34,075 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6790123456790124 [2024-11-20 22:00:34,077 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 168 flow. Second operand 5 states and 275 transitions. [2024-11-20 22:00:34,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 111 transitions, 392 flow [2024-11-20 22:00:34,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 111 transitions, 376 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 22:00:34,088 INFO L231 Difference]: Finished difference. Result has 76 places, 77 transitions, 171 flow [2024-11-20 22:00:34,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=76, PETRI_TRANSITIONS=77} [2024-11-20 22:00:34,095 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, -1 predicate places. [2024-11-20 22:00:34,095 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 171 flow [2024-11-20 22:00:34,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:34,095 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:34,095 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-20 22:00:34,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 22:00:34,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-20 22:00:34,297 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:34,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:34,297 INFO L85 PathProgramCache]: Analyzing trace with hash 24076230, now seen corresponding path program 1 times [2024-11-20 22:00:34,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:34,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232377031] [2024-11-20 22:00:34,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:34,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 22:00:34,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875304220] [2024-11-20 22:00:34,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:34,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:34,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:00:34,324 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:00:34,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 22:00:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:34,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:00:34,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:00:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:34,433 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:00:34,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:34,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232377031] [2024-11-20 22:00:34,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 22:00:34,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875304220] [2024-11-20 22:00:34,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875304220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:34,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:34,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 22:00:34,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712818908] [2024-11-20 22:00:34,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:34,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:00:34,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:34,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:00:34,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:00:34,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 81 [2024-11-20 22:00:34,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:34,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:34,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 81 [2024-11-20 22:00:34,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:34,688 INFO L124 PetriNetUnfolderBase]: 226/651 cut-off events. [2024-11-20 22:00:34,689 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-20 22:00:34,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1068 conditions, 651 events. 226/651 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3821 event pairs, 150 based on Foata normal form. 2/475 useless extension candidates. Maximal degree in co-relation 532. Up to 200 conditions per place. [2024-11-20 22:00:34,694 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 65 selfloop transitions, 4 changer transitions 1/108 dead transitions. [2024-11-20 22:00:34,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 108 transitions, 377 flow [2024-11-20 22:00:34,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 22:00:34,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 22:00:34,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 273 transitions. [2024-11-20 22:00:34,697 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.674074074074074 [2024-11-20 22:00:34,697 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 171 flow. Second operand 5 states and 273 transitions. [2024-11-20 22:00:34,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 108 transitions, 377 flow [2024-11-20 22:00:34,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 108 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 22:00:34,702 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 182 flow [2024-11-20 22:00:34,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2024-11-20 22:00:34,703 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2024-11-20 22:00:34,704 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 182 flow [2024-11-20 22:00:34,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:34,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:34,704 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 22:00:34,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 22:00:34,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-20 22:00:34,906 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:34,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:34,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1664522554, now seen corresponding path program 1 times [2024-11-20 22:00:34,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:34,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26131224] [2024-11-20 22:00:34,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:34,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 22:00:34,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865692524] [2024-11-20 22:00:34,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:34,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:34,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:00:34,946 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:00:34,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 22:00:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:35,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 22:00:35,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:00:35,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:35,119 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:00:35,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:35,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26131224] [2024-11-20 22:00:35,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 22:00:35,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865692524] [2024-11-20 22:00:35,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865692524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:35,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:35,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 22:00:35,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895470413] [2024-11-20 22:00:35,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:35,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:00:35,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:35,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:00:35,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:00:35,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 81 [2024-11-20 22:00:35,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:35,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:35,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 81 [2024-11-20 22:00:35,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:35,480 INFO L124 PetriNetUnfolderBase]: 226/650 cut-off events. [2024-11-20 22:00:35,481 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-20 22:00:35,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 650 events. 226/650 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3808 event pairs, 150 based on Foata normal form. 1/474 useless extension candidates. Maximal degree in co-relation 533. Up to 198 conditions per place. [2024-11-20 22:00:35,486 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 64 selfloop transitions, 4 changer transitions 1/107 dead transitions. [2024-11-20 22:00:35,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 107 transitions, 382 flow [2024-11-20 22:00:35,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 22:00:35,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 22:00:35,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 270 transitions. [2024-11-20 22:00:35,490 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-20 22:00:35,491 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 182 flow. Second operand 5 states and 270 transitions. [2024-11-20 22:00:35,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 107 transitions, 382 flow [2024-11-20 22:00:35,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 107 transitions, 374 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 22:00:35,494 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 178 flow [2024-11-20 22:00:35,495 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2024-11-20 22:00:35,495 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2024-11-20 22:00:35,496 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 178 flow [2024-11-20 22:00:35,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:35,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:35,497 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:35,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 22:00:35,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:35,702 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:35,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:35,703 INFO L85 PathProgramCache]: Analyzing trace with hash 60592401, now seen corresponding path program 1 times [2024-11-20 22:00:35,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:35,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787306770] [2024-11-20 22:00:35,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:35,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 22:00:35,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117962560] [2024-11-20 22:00:35,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:35,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:35,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:00:35,733 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:00:35,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 22:00:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:35,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 22:00:35,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:00:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:35,894 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:00:35,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:35,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787306770] [2024-11-20 22:00:35,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 22:00:35,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117962560] [2024-11-20 22:00:35,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117962560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:35,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:35,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 22:00:35,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937824789] [2024-11-20 22:00:35,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:35,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 22:00:35,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:35,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 22:00:35,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 22:00:36,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-11-20 22:00:36,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:36,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:36,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-11-20 22:00:36,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:36,389 INFO L124 PetriNetUnfolderBase]: 226/649 cut-off events. [2024-11-20 22:00:36,390 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-20 22:00:36,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 649 events. 226/649 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3758 event pairs, 150 based on Foata normal form. 1/473 useless extension candidates. Maximal degree in co-relation 534. Up to 196 conditions per place. [2024-11-20 22:00:36,394 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 63 selfloop transitions, 5 changer transitions 1/106 dead transitions. [2024-11-20 22:00:36,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 106 transitions, 378 flow [2024-11-20 22:00:36,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:00:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 22:00:36,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 304 transitions. [2024-11-20 22:00:36,399 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6255144032921811 [2024-11-20 22:00:36,400 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 178 flow. Second operand 6 states and 304 transitions. [2024-11-20 22:00:36,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 106 transitions, 378 flow [2024-11-20 22:00:36,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 106 transitions, 371 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 22:00:36,403 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 177 flow [2024-11-20 22:00:36,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=177, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2024-11-20 22:00:36,405 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2024-11-20 22:00:36,405 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 177 flow [2024-11-20 22:00:36,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:36,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:36,409 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:36,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 22:00:36,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:36,610 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:36,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:36,610 INFO L85 PathProgramCache]: Analyzing trace with hash -3795885, now seen corresponding path program 1 times [2024-11-20 22:00:36,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:36,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141697435] [2024-11-20 22:00:36,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:36,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:36,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:36,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:36,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141697435] [2024-11-20 22:00:36,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141697435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:36,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:36,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:00:36,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059666993] [2024-11-20 22:00:36,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:36,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:00:36,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:36,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:00:36,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:00:36,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-11-20 22:00:36,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:36,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:36,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-11-20 22:00:36,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:37,004 INFO L124 PetriNetUnfolderBase]: 232/673 cut-off events. [2024-11-20 22:00:37,005 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-20 22:00:37,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 673 events. 232/673 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3942 event pairs, 150 based on Foata normal form. 6/494 useless extension candidates. Maximal degree in co-relation 561. Up to 410 conditions per place. [2024-11-20 22:00:37,008 INFO L140 encePairwiseOnDemand]: 64/81 looper letters, 40 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2024-11-20 22:00:37,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 84 transitions, 297 flow [2024-11-20 22:00:37,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:00:37,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:00:37,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2024-11-20 22:00:37,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.654320987654321 [2024-11-20 22:00:37,010 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 177 flow. Second operand 4 states and 212 transitions. [2024-11-20 22:00:37,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 84 transitions, 297 flow [2024-11-20 22:00:37,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 84 transitions, 281 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-20 22:00:37,012 INFO L231 Difference]: Finished difference. Result has 81 places, 84 transitions, 253 flow [2024-11-20 22:00:37,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=81, PETRI_TRANSITIONS=84} [2024-11-20 22:00:37,013 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-11-20 22:00:37,013 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 84 transitions, 253 flow [2024-11-20 22:00:37,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:37,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:37,014 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:37,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 22:00:37,014 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:37,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:37,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1413294371, now seen corresponding path program 1 times [2024-11-20 22:00:37,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:37,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359294677] [2024-11-20 22:00:37,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:37,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:37,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:37,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:37,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359294677] [2024-11-20 22:00:37,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359294677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:00:37,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241965420] [2024-11-20 22:00:37,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:37,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:37,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:00:37,139 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:00:37,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 22:00:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:37,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:00:37,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:00:37,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:37,250 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:00:37,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241965420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:37,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:00:37,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-20 22:00:37,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855057306] [2024-11-20 22:00:37,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:37,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 22:00:37,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:37,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 22:00:37,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 22:00:37,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-11-20 22:00:37,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 84 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:37,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:37,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-11-20 22:00:37,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:37,455 INFO L124 PetriNetUnfolderBase]: 232/667 cut-off events. [2024-11-20 22:00:37,456 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-11-20 22:00:37,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 667 events. 232/667 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3890 event pairs, 150 based on Foata normal form. 6/497 useless extension candidates. Maximal degree in co-relation 1033. Up to 380 conditions per place. [2024-11-20 22:00:37,459 INFO L140 encePairwiseOnDemand]: 67/81 looper letters, 29 selfloop transitions, 19 changer transitions 0/81 dead transitions. [2024-11-20 22:00:37,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 81 transitions, 337 flow [2024-11-20 22:00:37,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:00:37,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 22:00:37,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 284 transitions. [2024-11-20 22:00:37,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5843621399176955 [2024-11-20 22:00:37,461 INFO L175 Difference]: Start difference. First operand has 81 places, 84 transitions, 253 flow. Second operand 6 states and 284 transitions. [2024-11-20 22:00:37,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 81 transitions, 337 flow [2024-11-20 22:00:37,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 81 transitions, 337 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 22:00:37,464 INFO L231 Difference]: Finished difference. Result has 83 places, 81 transitions, 279 flow [2024-11-20 22:00:37,464 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=279, PETRI_PLACES=83, PETRI_TRANSITIONS=81} [2024-11-20 22:00:37,467 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2024-11-20 22:00:37,468 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 81 transitions, 279 flow [2024-11-20 22:00:37,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:37,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:37,469 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:37,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-20 22:00:37,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:37,672 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:37,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:37,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1410682909, now seen corresponding path program 1 times [2024-11-20 22:00:37,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:37,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607126189] [2024-11-20 22:00:37,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:37,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:37,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:37,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607126189] [2024-11-20 22:00:37,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607126189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:37,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:37,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 22:00:37,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389017230] [2024-11-20 22:00:37,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:37,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 22:00:37,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:37,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 22:00:37,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-20 22:00:37,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2024-11-20 22:00:37,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 81 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:37,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:37,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2024-11-20 22:00:37,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:37,987 INFO L124 PetriNetUnfolderBase]: 229/653 cut-off events. [2024-11-20 22:00:37,987 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-11-20 22:00:37,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1167 conditions, 653 events. 229/653 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3784 event pairs, 150 based on Foata normal form. 1/488 useless extension candidates. Maximal degree in co-relation 1028. Up to 207 conditions per place. [2024-11-20 22:00:37,990 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 72 selfloop transitions, 6 changer transitions 1/113 dead transitions. [2024-11-20 22:00:37,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 113 transitions, 569 flow [2024-11-20 22:00:37,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 22:00:37,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 22:00:37,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 270 transitions. [2024-11-20 22:00:37,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-20 22:00:37,993 INFO L175 Difference]: Start difference. First operand has 83 places, 81 transitions, 279 flow. Second operand 5 states and 270 transitions. [2024-11-20 22:00:37,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 113 transitions, 569 flow [2024-11-20 22:00:37,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 113 transitions, 495 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-20 22:00:38,000 INFO L231 Difference]: Finished difference. Result has 84 places, 84 transitions, 269 flow [2024-11-20 22:00:38,001 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2024-11-20 22:00:38,001 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2024-11-20 22:00:38,001 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 269 flow [2024-11-20 22:00:38,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:38,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:38,002 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:38,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 22:00:38,002 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:38,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:38,003 INFO L85 PathProgramCache]: Analyzing trace with hash -862451771, now seen corresponding path program 1 times [2024-11-20 22:00:38,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:38,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12203578] [2024-11-20 22:00:38,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:38,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:38,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:38,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:38,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12203578] [2024-11-20 22:00:38,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12203578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:00:38,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183726737] [2024-11-20 22:00:38,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:38,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:38,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:00:38,073 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:00:38,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 22:00:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:38,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:00:38,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:00:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:38,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:00:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:38,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183726737] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:00:38,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:00:38,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-20 22:00:38,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142205215] [2024-11-20 22:00:38,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:00:38,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 22:00:38,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:38,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 22:00:38,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 22:00:38,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-11-20 22:00:38,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 269 flow. Second operand has 12 states, 12 states have (on average 40.25) internal successors, (483), 12 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:38,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:38,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-11-20 22:00:38,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:38,484 INFO L124 PetriNetUnfolderBase]: 244/713 cut-off events. [2024-11-20 22:00:38,484 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-11-20 22:00:38,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1314 conditions, 713 events. 244/713 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4335 event pairs, 150 based on Foata normal form. 15/551 useless extension candidates. Maximal degree in co-relation 1024. Up to 406 conditions per place. [2024-11-20 22:00:38,488 INFO L140 encePairwiseOnDemand]: 67/81 looper letters, 39 selfloop transitions, 42 changer transitions 0/114 dead transitions. [2024-11-20 22:00:38,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 114 transitions, 581 flow [2024-11-20 22:00:38,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:00:38,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:00:38,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 473 transitions. [2024-11-20 22:00:38,490 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5839506172839506 [2024-11-20 22:00:38,490 INFO L175 Difference]: Start difference. First operand has 84 places, 84 transitions, 269 flow. Second operand 10 states and 473 transitions. [2024-11-20 22:00:38,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 114 transitions, 581 flow [2024-11-20 22:00:38,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 114 transitions, 576 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 22:00:38,495 INFO L231 Difference]: Finished difference. Result has 94 places, 114 transitions, 552 flow [2024-11-20 22:00:38,495 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=552, PETRI_PLACES=94, PETRI_TRANSITIONS=114} [2024-11-20 22:00:38,497 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 17 predicate places. [2024-11-20 22:00:38,498 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 114 transitions, 552 flow [2024-11-20 22:00:38,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 40.25) internal successors, (483), 12 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:38,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:38,499 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:38,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 22:00:38,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:38,700 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:38,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:38,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1544502544, now seen corresponding path program 1 times [2024-11-20 22:00:38,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:38,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538506306] [2024-11-20 22:00:38,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:38,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:38,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:38,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:38,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538506306] [2024-11-20 22:00:38,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538506306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:38,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:38,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:00:38,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959790734] [2024-11-20 22:00:38,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:38,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:00:38,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:38,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:00:38,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:00:38,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2024-11-20 22:00:38,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 114 transitions, 552 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:38,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:38,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2024-11-20 22:00:38,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:38,975 INFO L124 PetriNetUnfolderBase]: 476/1165 cut-off events. [2024-11-20 22:00:38,975 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2024-11-20 22:00:38,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 1165 events. 476/1165 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7243 event pairs, 234 based on Foata normal form. 32/908 useless extension candidates. Maximal degree in co-relation 2074. Up to 645 conditions per place. [2024-11-20 22:00:38,982 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 101 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2024-11-20 22:00:38,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 139 transitions, 814 flow [2024-11-20 22:00:38,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:00:38,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:00:38,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2024-11-20 22:00:38,983 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7283950617283951 [2024-11-20 22:00:38,983 INFO L175 Difference]: Start difference. First operand has 94 places, 114 transitions, 552 flow. Second operand 4 states and 236 transitions. [2024-11-20 22:00:38,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 139 transitions, 814 flow [2024-11-20 22:00:38,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 139 transitions, 778 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-20 22:00:38,989 INFO L231 Difference]: Finished difference. Result has 97 places, 117 transitions, 545 flow [2024-11-20 22:00:38,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=545, PETRI_PLACES=97, PETRI_TRANSITIONS=117} [2024-11-20 22:00:38,991 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 20 predicate places. [2024-11-20 22:00:38,991 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 117 transitions, 545 flow [2024-11-20 22:00:38,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:38,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:38,992 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:38,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 22:00:38,993 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:38,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:38,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1745485225, now seen corresponding path program 1 times [2024-11-20 22:00:38,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:38,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285666591] [2024-11-20 22:00:38,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:38,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:39,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:39,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:39,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285666591] [2024-11-20 22:00:39,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285666591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:39,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:39,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:00:39,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846481434] [2024-11-20 22:00:39,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:39,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:00:39,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:39,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:00:39,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:00:39,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2024-11-20 22:00:39,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 117 transitions, 545 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:39,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:39,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2024-11-20 22:00:39,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:39,245 INFO L124 PetriNetUnfolderBase]: 382/1090 cut-off events. [2024-11-20 22:00:39,245 INFO L125 PetriNetUnfolderBase]: For 472/480 co-relation queries the response was YES. [2024-11-20 22:00:39,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2382 conditions, 1090 events. 382/1090 cut-off events. For 472/480 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7501 event pairs, 234 based on Foata normal form. 1/871 useless extension candidates. Maximal degree in co-relation 2196. Up to 639 conditions per place. [2024-11-20 22:00:39,251 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 83 selfloop transitions, 18 changer transitions 0/135 dead transitions. [2024-11-20 22:00:39,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 135 transitions, 853 flow [2024-11-20 22:00:39,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:00:39,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:00:39,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-11-20 22:00:39,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6697530864197531 [2024-11-20 22:00:39,253 INFO L175 Difference]: Start difference. First operand has 97 places, 117 transitions, 545 flow. Second operand 4 states and 217 transitions. [2024-11-20 22:00:39,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 135 transitions, 853 flow [2024-11-20 22:00:39,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 135 transitions, 850 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:00:39,258 INFO L231 Difference]: Finished difference. Result has 101 places, 124 transitions, 650 flow [2024-11-20 22:00:39,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=650, PETRI_PLACES=101, PETRI_TRANSITIONS=124} [2024-11-20 22:00:39,259 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 24 predicate places. [2024-11-20 22:00:39,259 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 124 transitions, 650 flow [2024-11-20 22:00:39,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:39,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:39,259 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:39,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 22:00:39,260 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:39,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:39,260 INFO L85 PathProgramCache]: Analyzing trace with hash 291477240, now seen corresponding path program 1 times [2024-11-20 22:00:39,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:39,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614175291] [2024-11-20 22:00:39,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:39,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:39,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:00:39,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:39,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614175291] [2024-11-20 22:00:39,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614175291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:39,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:39,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 22:00:39,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691692449] [2024-11-20 22:00:39,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:39,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 22:00:39,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:39,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 22:00:39,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 22:00:39,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 81 [2024-11-20 22:00:39,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 124 transitions, 650 flow. Second operand has 5 states, 5 states have (on average 47.2) internal successors, (236), 5 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:39,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:39,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 81 [2024-11-20 22:00:39,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:39,627 INFO L124 PetriNetUnfolderBase]: 538/1545 cut-off events. [2024-11-20 22:00:39,627 INFO L125 PetriNetUnfolderBase]: For 666/674 co-relation queries the response was YES. [2024-11-20 22:00:39,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3389 conditions, 1545 events. 538/1545 cut-off events. For 666/674 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 10899 event pairs, 294 based on Foata normal form. 32/1289 useless extension candidates. Maximal degree in co-relation 3132. Up to 641 conditions per place. [2024-11-20 22:00:39,636 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 142 selfloop transitions, 20 changer transitions 0/198 dead transitions. [2024-11-20 22:00:39,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 198 transitions, 1405 flow [2024-11-20 22:00:39,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:00:39,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 22:00:39,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 355 transitions. [2024-11-20 22:00:39,638 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7304526748971193 [2024-11-20 22:00:39,638 INFO L175 Difference]: Start difference. First operand has 101 places, 124 transitions, 650 flow. Second operand 6 states and 355 transitions. [2024-11-20 22:00:39,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 198 transitions, 1405 flow [2024-11-20 22:00:39,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 198 transitions, 1379 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:00:39,646 INFO L231 Difference]: Finished difference. Result has 108 places, 133 transitions, 779 flow [2024-11-20 22:00:39,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=779, PETRI_PLACES=108, PETRI_TRANSITIONS=133} [2024-11-20 22:00:39,647 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 31 predicate places. [2024-11-20 22:00:39,647 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 133 transitions, 779 flow [2024-11-20 22:00:39,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 5 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:39,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:39,648 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:39,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 22:00:39,648 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:39,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:39,649 INFO L85 PathProgramCache]: Analyzing trace with hash -398301331, now seen corresponding path program 1 times [2024-11-20 22:00:39,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:39,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384651517] [2024-11-20 22:00:39,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:39,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:39,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:39,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:39,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384651517] [2024-11-20 22:00:39,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384651517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:39,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:39,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 22:00:39,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794987794] [2024-11-20 22:00:39,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:39,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 22:00:39,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:39,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 22:00:39,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-20 22:00:39,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-11-20 22:00:39,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 133 transitions, 779 flow. Second operand has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:39,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:39,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-11-20 22:00:39,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:39,971 INFO L124 PetriNetUnfolderBase]: 440/1119 cut-off events. [2024-11-20 22:00:39,972 INFO L125 PetriNetUnfolderBase]: For 889/889 co-relation queries the response was YES. [2024-11-20 22:00:39,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3039 conditions, 1119 events. 440/1119 cut-off events. For 889/889 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6600 event pairs, 267 based on Foata normal form. 0/1008 useless extension candidates. Maximal degree in co-relation 2769. Up to 624 conditions per place. [2024-11-20 22:00:39,978 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 138 selfloop transitions, 5 changer transitions 13/188 dead transitions. [2024-11-20 22:00:39,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 188 transitions, 1418 flow [2024-11-20 22:00:39,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 22:00:39,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 22:00:39,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 262 transitions. [2024-11-20 22:00:39,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6469135802469136 [2024-11-20 22:00:39,980 INFO L175 Difference]: Start difference. First operand has 108 places, 133 transitions, 779 flow. Second operand 5 states and 262 transitions. [2024-11-20 22:00:39,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 188 transitions, 1418 flow [2024-11-20 22:00:39,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 188 transitions, 1414 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-20 22:00:39,988 INFO L231 Difference]: Finished difference. Result has 114 places, 133 transitions, 773 flow [2024-11-20 22:00:39,989 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=773, PETRI_PLACES=114, PETRI_TRANSITIONS=133} [2024-11-20 22:00:39,989 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 37 predicate places. [2024-11-20 22:00:39,989 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 133 transitions, 773 flow [2024-11-20 22:00:39,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:39,990 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:39,990 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:39,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 22:00:39,990 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:39,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:39,991 INFO L85 PathProgramCache]: Analyzing trace with hash -815446169, now seen corresponding path program 1 times [2024-11-20 22:00:39,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:39,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862151487] [2024-11-20 22:00:39,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:39,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:40,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:40,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:40,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862151487] [2024-11-20 22:00:40,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862151487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:00:40,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563118315] [2024-11-20 22:00:40,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:40,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:40,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:00:40,084 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:00:40,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 22:00:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:40,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:00:40,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:00:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:40,198 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:00:40,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563118315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:40,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:00:40,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-20 22:00:40,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918387741] [2024-11-20 22:00:40,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:40,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 22:00:40,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:40,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 22:00:40,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 22:00:40,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2024-11-20 22:00:40,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 133 transitions, 773 flow. Second operand has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:40,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:40,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2024-11-20 22:00:40,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:40,428 INFO L124 PetriNetUnfolderBase]: 380/1051 cut-off events. [2024-11-20 22:00:40,428 INFO L125 PetriNetUnfolderBase]: For 953/953 co-relation queries the response was YES. [2024-11-20 22:00:40,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 1051 events. 380/1051 cut-off events. For 953/953 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6364 event pairs, 242 based on Foata normal form. 2/913 useless extension candidates. Maximal degree in co-relation 2659. Up to 655 conditions per place. [2024-11-20 22:00:40,435 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 84 selfloop transitions, 27 changer transitions 0/145 dead transitions. [2024-11-20 22:00:40,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 145 transitions, 1092 flow [2024-11-20 22:00:40,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:00:40,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 22:00:40,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 301 transitions. [2024-11-20 22:00:40,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6193415637860082 [2024-11-20 22:00:40,437 INFO L175 Difference]: Start difference. First operand has 114 places, 133 transitions, 773 flow. Second operand 6 states and 301 transitions. [2024-11-20 22:00:40,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 145 transitions, 1092 flow [2024-11-20 22:00:40,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 145 transitions, 1065 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 22:00:40,446 INFO L231 Difference]: Finished difference. Result has 115 places, 132 transitions, 800 flow [2024-11-20 22:00:40,446 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=800, PETRI_PLACES=115, PETRI_TRANSITIONS=132} [2024-11-20 22:00:40,446 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 38 predicate places. [2024-11-20 22:00:40,447 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 132 transitions, 800 flow [2024-11-20 22:00:40,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:40,447 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:40,447 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:40,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 22:00:40,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:40,651 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:40,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:40,651 INFO L85 PathProgramCache]: Analyzing trace with hash 490973334, now seen corresponding path program 1 times [2024-11-20 22:00:40,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:40,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960980777] [2024-11-20 22:00:40,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:40,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:40,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:40,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:40,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960980777] [2024-11-20 22:00:40,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960980777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:00:40,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627839319] [2024-11-20 22:00:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:40,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:40,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:00:40,761 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:00:40,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 22:00:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:40,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:00:40,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:00:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:40,882 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:00:40,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:40,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627839319] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:00:40,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:00:40,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-20 22:00:40,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371018169] [2024-11-20 22:00:40,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:00:40,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 22:00:40,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:40,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 22:00:40,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 22:00:40,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2024-11-20 22:00:40,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 132 transitions, 800 flow. Second operand has 12 states, 12 states have (on average 44.916666666666664) internal successors, (539), 12 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:40,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:40,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2024-11-20 22:00:40,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:41,262 INFO L124 PetriNetUnfolderBase]: 416/1175 cut-off events. [2024-11-20 22:00:41,262 INFO L125 PetriNetUnfolderBase]: For 1201/1201 co-relation queries the response was YES. [2024-11-20 22:00:41,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3521 conditions, 1175 events. 416/1175 cut-off events. For 1201/1201 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7065 event pairs, 242 based on Foata normal form. 6/1057 useless extension candidates. Maximal degree in co-relation 3014. Up to 699 conditions per place. [2024-11-20 22:00:41,269 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 131 selfloop transitions, 43 changer transitions 0/208 dead transitions. [2024-11-20 22:00:41,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 208 transitions, 1752 flow [2024-11-20 22:00:41,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:00:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:00:41,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 493 transitions. [2024-11-20 22:00:41,271 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.608641975308642 [2024-11-20 22:00:41,271 INFO L175 Difference]: Start difference. First operand has 115 places, 132 transitions, 800 flow. Second operand 10 states and 493 transitions. [2024-11-20 22:00:41,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 208 transitions, 1752 flow [2024-11-20 22:00:41,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 208 transitions, 1637 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-11-20 22:00:41,281 INFO L231 Difference]: Finished difference. Result has 123 places, 156 transitions, 1030 flow [2024-11-20 22:00:41,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1030, PETRI_PLACES=123, PETRI_TRANSITIONS=156} [2024-11-20 22:00:41,282 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 46 predicate places. [2024-11-20 22:00:41,282 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 156 transitions, 1030 flow [2024-11-20 22:00:41,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.916666666666664) internal successors, (539), 12 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:41,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:41,283 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:41,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 22:00:41,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-20 22:00:41,484 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:41,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:41,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2121039192, now seen corresponding path program 1 times [2024-11-20 22:00:41,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:41,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574470304] [2024-11-20 22:00:41,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:41,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:41,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:41,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:41,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574470304] [2024-11-20 22:00:41,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574470304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:41,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:41,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 22:00:41,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211424548] [2024-11-20 22:00:41,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:41,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 22:00:41,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:41,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 22:00:41,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-20 22:00:41,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2024-11-20 22:00:41,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 156 transitions, 1030 flow. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:41,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:41,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2024-11-20 22:00:41,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:41,818 INFO L124 PetriNetUnfolderBase]: 414/1173 cut-off events. [2024-11-20 22:00:41,819 INFO L125 PetriNetUnfolderBase]: For 1236/1236 co-relation queries the response was YES. [2024-11-20 22:00:41,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3515 conditions, 1173 events. 414/1173 cut-off events. For 1236/1236 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6955 event pairs, 242 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 3220. Up to 590 conditions per place. [2024-11-20 22:00:41,827 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 161 selfloop transitions, 10 changer transitions 6/210 dead transitions. [2024-11-20 22:00:41,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 210 transitions, 1730 flow [2024-11-20 22:00:41,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 22:00:41,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 22:00:41,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 269 transitions. [2024-11-20 22:00:41,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6641975308641975 [2024-11-20 22:00:41,828 INFO L175 Difference]: Start difference. First operand has 123 places, 156 transitions, 1030 flow. Second operand 5 states and 269 transitions. [2024-11-20 22:00:41,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 210 transitions, 1730 flow [2024-11-20 22:00:41,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 210 transitions, 1700 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-20 22:00:41,840 INFO L231 Difference]: Finished difference. Result has 125 places, 155 transitions, 1013 flow [2024-11-20 22:00:41,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1013, PETRI_PLACES=125, PETRI_TRANSITIONS=155} [2024-11-20 22:00:41,841 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 48 predicate places. [2024-11-20 22:00:41,841 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 155 transitions, 1013 flow [2024-11-20 22:00:41,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:41,841 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:41,841 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:41,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 22:00:41,842 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:41,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:41,842 INFO L85 PathProgramCache]: Analyzing trace with hash 127811983, now seen corresponding path program 2 times [2024-11-20 22:00:41,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:41,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992075038] [2024-11-20 22:00:41,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:41,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:42,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:42,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992075038] [2024-11-20 22:00:42,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992075038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:00:42,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707643347] [2024-11-20 22:00:42,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:00:42,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:42,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:00:42,026 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:00:42,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 22:00:42,101 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 22:00:42,101 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:00:42,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 22:00:42,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:00:42,967 WARN L873 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= |c_ULTIMATE.start_create_fresh_int_array_~size#1| .cse0) (<= .cse0 2147483647)))) is different from true [2024-11-20 22:00:43,942 WARN L873 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post26#1| 1) .cse0)))) is different from true [2024-11-20 22:00:43,953 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 8 not checked. [2024-11-20 22:00:43,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:00:44,000 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-20 22:00:44,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707643347] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:00:44,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:00:44,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 15 [2024-11-20 22:00:44,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914304915] [2024-11-20 22:00:44,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:00:44,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 22:00:44,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:44,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 22:00:44,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=134, Unknown=2, NotChecked=50, Total=240 [2024-11-20 22:00:44,011 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-20 22:00:44,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 155 transitions, 1013 flow. Second operand has 16 states, 16 states have (on average 38.0) internal successors, (608), 16 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:44,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:44,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-20 22:00:44,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:45,635 INFO L124 PetriNetUnfolderBase]: 430/1353 cut-off events. [2024-11-20 22:00:45,636 INFO L125 PetriNetUnfolderBase]: For 1324/1324 co-relation queries the response was YES. [2024-11-20 22:00:45,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3953 conditions, 1353 events. 430/1353 cut-off events. For 1324/1324 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8778 event pairs, 242 based on Foata normal form. 18/1203 useless extension candidates. Maximal degree in co-relation 3605. Up to 749 conditions per place. [2024-11-20 22:00:45,651 INFO L140 encePairwiseOnDemand]: 67/81 looper letters, 71 selfloop transitions, 83 changer transitions 0/183 dead transitions. [2024-11-20 22:00:45,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 183 transitions, 1459 flow [2024-11-20 22:00:45,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-20 22:00:45,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-20 22:00:45,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 968 transitions. [2024-11-20 22:00:45,654 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49794238683127573 [2024-11-20 22:00:45,655 INFO L175 Difference]: Start difference. First operand has 125 places, 155 transitions, 1013 flow. Second operand 24 states and 968 transitions. [2024-11-20 22:00:45,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 183 transitions, 1459 flow [2024-11-20 22:00:45,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 183 transitions, 1425 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-20 22:00:45,667 INFO L231 Difference]: Finished difference. Result has 145 places, 168 transitions, 1294 flow [2024-11-20 22:00:45,667 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1294, PETRI_PLACES=145, PETRI_TRANSITIONS=168} [2024-11-20 22:00:45,670 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 68 predicate places. [2024-11-20 22:00:45,670 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 168 transitions, 1294 flow [2024-11-20 22:00:45,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 38.0) internal successors, (608), 16 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:45,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:45,670 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:45,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 22:00:45,871 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,SelfDestructingSolverStorable15 [2024-11-20 22:00:45,871 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:45,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:45,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1846403656, now seen corresponding path program 1 times [2024-11-20 22:00:45,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:45,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824721959] [2024-11-20 22:00:45,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:45,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:46,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:46,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:46,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824721959] [2024-11-20 22:00:46,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824721959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:46,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:46,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 22:00:46,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522644959] [2024-11-20 22:00:46,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:46,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 22:00:46,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:46,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 22:00:46,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 22:00:46,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 81 [2024-11-20 22:00:46,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 168 transitions, 1294 flow. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:46,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:46,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 81 [2024-11-20 22:00:46,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:46,508 INFO L124 PetriNetUnfolderBase]: 649/1930 cut-off events. [2024-11-20 22:00:46,508 INFO L125 PetriNetUnfolderBase]: For 2931/2951 co-relation queries the response was YES. [2024-11-20 22:00:46,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6165 conditions, 1930 events. 649/1930 cut-off events. For 2931/2951 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 12774 event pairs, 338 based on Foata normal form. 2/1721 useless extension candidates. Maximal degree in co-relation 5400. Up to 865 conditions per place. [2024-11-20 22:00:46,524 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 188 selfloop transitions, 28 changer transitions 1/251 dead transitions. [2024-11-20 22:00:46,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 251 transitions, 2427 flow [2024-11-20 22:00:46,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:00:46,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 22:00:46,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 340 transitions. [2024-11-20 22:00:46,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6995884773662552 [2024-11-20 22:00:46,526 INFO L175 Difference]: Start difference. First operand has 145 places, 168 transitions, 1294 flow. Second operand 6 states and 340 transitions. [2024-11-20 22:00:46,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 251 transitions, 2427 flow [2024-11-20 22:00:46,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 251 transitions, 2144 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-11-20 22:00:46,548 INFO L231 Difference]: Finished difference. Result has 141 places, 182 transitions, 1317 flow [2024-11-20 22:00:46,549 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1317, PETRI_PLACES=141, PETRI_TRANSITIONS=182} [2024-11-20 22:00:46,549 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 64 predicate places. [2024-11-20 22:00:46,549 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 182 transitions, 1317 flow [2024-11-20 22:00:46,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:46,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:46,550 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:46,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 22:00:46,550 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:46,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:46,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1846403689, now seen corresponding path program 1 times [2024-11-20 22:00:46,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:46,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010994165] [2024-11-20 22:00:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:46,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:00:46,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:46,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010994165] [2024-11-20 22:00:46,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010994165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:46,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:46,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:00:46,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580469639] [2024-11-20 22:00:46,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:46,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:00:46,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:46,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:00:46,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:00:46,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2024-11-20 22:00:46,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 182 transitions, 1317 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:46,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:46,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2024-11-20 22:00:46,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:47,001 INFO L124 PetriNetUnfolderBase]: 1115/2784 cut-off events. [2024-11-20 22:00:47,001 INFO L125 PetriNetUnfolderBase]: For 3638/3702 co-relation queries the response was YES. [2024-11-20 22:00:47,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8220 conditions, 2784 events. 1115/2784 cut-off events. For 3638/3702 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 18487 event pairs, 488 based on Foata normal form. 80/2634 useless extension candidates. Maximal degree in co-relation 7532. Up to 1635 conditions per place. [2024-11-20 22:00:47,021 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 176 selfloop transitions, 7 changer transitions 0/213 dead transitions. [2024-11-20 22:00:47,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 213 transitions, 1835 flow [2024-11-20 22:00:47,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:00:47,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:00:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 226 transitions. [2024-11-20 22:00:47,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6975308641975309 [2024-11-20 22:00:47,023 INFO L175 Difference]: Start difference. First operand has 141 places, 182 transitions, 1317 flow. Second operand 4 states and 226 transitions. [2024-11-20 22:00:47,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 213 transitions, 1835 flow [2024-11-20 22:00:47,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 213 transitions, 1835 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 22:00:47,044 INFO L231 Difference]: Finished difference. Result has 146 places, 186 transitions, 1372 flow [2024-11-20 22:00:47,044 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1372, PETRI_PLACES=146, PETRI_TRANSITIONS=186} [2024-11-20 22:00:47,044 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 69 predicate places. [2024-11-20 22:00:47,044 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 186 transitions, 1372 flow [2024-11-20 22:00:47,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:47,045 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:47,045 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:47,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-20 22:00:47,045 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:47,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:47,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1644240363, now seen corresponding path program 1 times [2024-11-20 22:00:47,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:47,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205460250] [2024-11-20 22:00:47,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:47,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:47,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:00:47,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:47,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205460250] [2024-11-20 22:00:47,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205460250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:00:47,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324018078] [2024-11-20 22:00:47,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:47,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:47,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:00:47,144 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:00:47,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 22:00:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:47,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 22:00:47,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:00:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:00:47,361 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:00:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:00:47,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324018078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:00:47,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:00:47,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-20 22:00:47,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742818987] [2024-11-20 22:00:47,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:00:47,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-20 22:00:47,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:47,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 22:00:47,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-20 22:00:47,608 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2024-11-20 22:00:47,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 186 transitions, 1372 flow. Second operand has 19 states, 19 states have (on average 39.0) internal successors, (741), 19 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:47,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:47,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2024-11-20 22:00:47,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:48,547 INFO L124 PetriNetUnfolderBase]: 1526/3721 cut-off events. [2024-11-20 22:00:48,547 INFO L125 PetriNetUnfolderBase]: For 5916/5960 co-relation queries the response was YES. [2024-11-20 22:00:48,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12223 conditions, 3721 events. 1526/3721 cut-off events. For 5916/5960 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 25864 event pairs, 321 based on Foata normal form. 52/3602 useless extension candidates. Maximal degree in co-relation 11199. Up to 1111 conditions per place. [2024-11-20 22:00:48,567 INFO L140 encePairwiseOnDemand]: 66/81 looper letters, 319 selfloop transitions, 66 changer transitions 15/430 dead transitions. [2024-11-20 22:00:48,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 430 transitions, 3852 flow [2024-11-20 22:00:48,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-20 22:00:48,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-20 22:00:48,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 798 transitions. [2024-11-20 22:00:48,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.579520697167756 [2024-11-20 22:00:48,573 INFO L175 Difference]: Start difference. First operand has 146 places, 186 transitions, 1372 flow. Second operand 17 states and 798 transitions. [2024-11-20 22:00:48,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 430 transitions, 3852 flow [2024-11-20 22:00:48,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 430 transitions, 3807 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:00:48,610 INFO L231 Difference]: Finished difference. Result has 162 places, 215 transitions, 1823 flow [2024-11-20 22:00:48,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1823, PETRI_PLACES=162, PETRI_TRANSITIONS=215} [2024-11-20 22:00:48,611 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 85 predicate places. [2024-11-20 22:00:48,611 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 215 transitions, 1823 flow [2024-11-20 22:00:48,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 39.0) internal successors, (741), 19 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:48,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:48,612 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:48,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-20 22:00:48,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:48,813 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:48,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:48,813 INFO L85 PathProgramCache]: Analyzing trace with hash -331478038, now seen corresponding path program 1 times [2024-11-20 22:00:48,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:48,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867258081] [2024-11-20 22:00:48,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:48,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:48,926 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-20 22:00:48,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:48,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867258081] [2024-11-20 22:00:48,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867258081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:48,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:48,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 22:00:48,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007570978] [2024-11-20 22:00:48,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:48,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:00:48,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:48,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:00:48,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:00:48,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 81 [2024-11-20 22:00:48,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 215 transitions, 1823 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:48,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:48,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 81 [2024-11-20 22:00:48,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:49,448 INFO L124 PetriNetUnfolderBase]: 1410/3728 cut-off events. [2024-11-20 22:00:49,448 INFO L125 PetriNetUnfolderBase]: For 8315/8320 co-relation queries the response was YES. [2024-11-20 22:00:49,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12890 conditions, 3728 events. 1410/3728 cut-off events. For 8315/8320 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 27523 event pairs, 857 based on Foata normal form. 2/3614 useless extension candidates. Maximal degree in co-relation 11777. Up to 2641 conditions per place. [2024-11-20 22:00:49,466 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 168 selfloop transitions, 13 changer transitions 0/214 dead transitions. [2024-11-20 22:00:49,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 214 transitions, 2173 flow [2024-11-20 22:00:49,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:00:49,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:00:49,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2024-11-20 22:00:49,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6882716049382716 [2024-11-20 22:00:49,467 INFO L175 Difference]: Start difference. First operand has 162 places, 215 transitions, 1823 flow. Second operand 4 states and 223 transitions. [2024-11-20 22:00:49,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 214 transitions, 2173 flow [2024-11-20 22:00:49,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 214 transitions, 2125 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-20 22:00:49,500 INFO L231 Difference]: Finished difference. Result has 162 places, 214 transitions, 1793 flow [2024-11-20 22:00:49,501 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1763, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1793, PETRI_PLACES=162, PETRI_TRANSITIONS=214} [2024-11-20 22:00:49,501 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 85 predicate places. [2024-11-20 22:00:49,501 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 214 transitions, 1793 flow [2024-11-20 22:00:49,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:49,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:49,502 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:49,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-20 22:00:49,502 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:49,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:49,502 INFO L85 PathProgramCache]: Analyzing trace with hash 396599330, now seen corresponding path program 1 times [2024-11-20 22:00:49,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:49,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911379997] [2024-11-20 22:00:49,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:49,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:49,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:00:49,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:49,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911379997] [2024-11-20 22:00:49,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911379997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:00:49,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857006432] [2024-11-20 22:00:49,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:49,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:49,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:00:49,578 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:00:49,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 22:00:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:49,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 22:00:49,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:00:49,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:49,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:00:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:49,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857006432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:00:49,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:00:49,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 16 [2024-11-20 22:00:49,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877154220] [2024-11-20 22:00:49,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:00:49,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 22:00:49,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:49,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 22:00:49,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-20 22:00:50,232 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2024-11-20 22:00:50,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 214 transitions, 1793 flow. Second operand has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:50,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:50,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2024-11-20 22:00:50,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:51,243 INFO L124 PetriNetUnfolderBase]: 2307/5546 cut-off events. [2024-11-20 22:00:51,243 INFO L125 PetriNetUnfolderBase]: For 7484/7532 co-relation queries the response was YES. [2024-11-20 22:00:51,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16813 conditions, 5546 events. 2307/5546 cut-off events. For 7484/7532 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 41491 event pairs, 346 based on Foata normal form. 124/5404 useless extension candidates. Maximal degree in co-relation 15701. Up to 850 conditions per place. [2024-11-20 22:00:51,278 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 352 selfloop transitions, 41 changer transitions 0/421 dead transitions. [2024-11-20 22:00:51,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 421 transitions, 3879 flow [2024-11-20 22:00:51,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 22:00:51,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-20 22:00:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 603 transitions. [2024-11-20 22:00:51,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5726495726495726 [2024-11-20 22:00:51,281 INFO L175 Difference]: Start difference. First operand has 162 places, 214 transitions, 1793 flow. Second operand 13 states and 603 transitions. [2024-11-20 22:00:51,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 421 transitions, 3879 flow [2024-11-20 22:00:51,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 421 transitions, 3855 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 22:00:51,332 INFO L231 Difference]: Finished difference. Result has 172 places, 219 transitions, 1893 flow [2024-11-20 22:00:51,333 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1893, PETRI_PLACES=172, PETRI_TRANSITIONS=219} [2024-11-20 22:00:51,333 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 95 predicate places. [2024-11-20 22:00:51,333 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 219 transitions, 1893 flow [2024-11-20 22:00:51,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:51,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:51,334 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:51,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-20 22:00:51,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-20 22:00:51,535 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:51,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:51,536 INFO L85 PathProgramCache]: Analyzing trace with hash 813241376, now seen corresponding path program 1 times [2024-11-20 22:00:51,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:51,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866250551] [2024-11-20 22:00:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:51,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:51,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:00:51,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:51,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866250551] [2024-11-20 22:00:51,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866250551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:51,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:51,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:00:51,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062367186] [2024-11-20 22:00:51,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:51,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:00:51,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:51,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:00:51,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:00:51,653 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-11-20 22:00:51,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 219 transitions, 1893 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:51,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:51,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-11-20 22:00:51,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:52,503 INFO L124 PetriNetUnfolderBase]: 3750/7983 cut-off events. [2024-11-20 22:00:52,504 INFO L125 PetriNetUnfolderBase]: For 12523/12609 co-relation queries the response was YES. [2024-11-20 22:00:52,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24402 conditions, 7983 events. 3750/7983 cut-off events. For 12523/12609 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 57291 event pairs, 1820 based on Foata normal form. 0/7495 useless extension candidates. Maximal degree in co-relation 23289. Up to 4812 conditions per place. [2024-11-20 22:00:52,554 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 226 selfloop transitions, 10 changer transitions 0/262 dead transitions. [2024-11-20 22:00:52,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 262 transitions, 2557 flow [2024-11-20 22:00:52,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:00:52,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:00:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-11-20 22:00:52,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2024-11-20 22:00:52,556 INFO L175 Difference]: Start difference. First operand has 172 places, 219 transitions, 1893 flow. Second operand 4 states and 219 transitions. [2024-11-20 22:00:52,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 262 transitions, 2557 flow [2024-11-20 22:00:52,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 262 transitions, 2501 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-20 22:00:52,609 INFO L231 Difference]: Finished difference. Result has 172 places, 224 transitions, 1912 flow [2024-11-20 22:00:52,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1841, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1912, PETRI_PLACES=172, PETRI_TRANSITIONS=224} [2024-11-20 22:00:52,610 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 95 predicate places. [2024-11-20 22:00:52,610 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 224 transitions, 1912 flow [2024-11-20 22:00:52,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:52,610 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:52,610 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:52,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-20 22:00:52,611 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:52,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:52,611 INFO L85 PathProgramCache]: Analyzing trace with hash -559320266, now seen corresponding path program 1 times [2024-11-20 22:00:52,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:52,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844529270] [2024-11-20 22:00:52,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:52,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:00:52,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:52,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844529270] [2024-11-20 22:00:52,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844529270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:52,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:52,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:00:52,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403984793] [2024-11-20 22:00:52,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:52,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:00:52,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:52,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:00:52,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:00:52,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 81 [2024-11-20 22:00:52,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 224 transitions, 1912 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:52,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:52,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 81 [2024-11-20 22:00:52,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:53,862 INFO L124 PetriNetUnfolderBase]: 3345/7485 cut-off events. [2024-11-20 22:00:53,862 INFO L125 PetriNetUnfolderBase]: For 13010/13078 co-relation queries the response was YES. [2024-11-20 22:00:53,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23662 conditions, 7485 events. 3345/7485 cut-off events. For 13010/13078 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 55204 event pairs, 1703 based on Foata normal form. 0/7183 useless extension candidates. Maximal degree in co-relation 22546. Up to 4584 conditions per place. [2024-11-20 22:00:53,915 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 222 selfloop transitions, 11 changer transitions 0/261 dead transitions. [2024-11-20 22:00:53,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 261 transitions, 2536 flow [2024-11-20 22:00:53,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:00:53,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:00:53,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 220 transitions. [2024-11-20 22:00:53,916 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6790123456790124 [2024-11-20 22:00:53,917 INFO L175 Difference]: Start difference. First operand has 172 places, 224 transitions, 1912 flow. Second operand 4 states and 220 transitions. [2024-11-20 22:00:53,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 261 transitions, 2536 flow [2024-11-20 22:00:53,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 261 transitions, 2527 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:00:53,992 INFO L231 Difference]: Finished difference. Result has 176 places, 226 transitions, 1950 flow [2024-11-20 22:00:53,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1950, PETRI_PLACES=176, PETRI_TRANSITIONS=226} [2024-11-20 22:00:53,994 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 99 predicate places. [2024-11-20 22:00:53,994 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 226 transitions, 1950 flow [2024-11-20 22:00:53,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:53,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:53,994 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:53,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-20 22:00:53,995 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:53,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:53,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1144951136, now seen corresponding path program 1 times [2024-11-20 22:00:53,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:53,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147791100] [2024-11-20 22:00:53,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:53,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:54,270 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-20 22:00:54,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:54,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147791100] [2024-11-20 22:00:54,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147791100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:00:54,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153090027] [2024-11-20 22:00:54,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:54,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:54,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:00:54,274 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:00:54,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 22:00:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:54,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 22:00:54,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:00:54,475 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-20 22:00:54,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:00:54,572 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-20 22:00:54,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153090027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:00:54,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:00:54,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-20 22:00:54,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371756077] [2024-11-20 22:00:54,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:00:54,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-20 22:00:54,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:54,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-20 22:00:54,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-20 22:00:54,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-11-20 22:00:54,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 226 transitions, 1950 flow. Second operand has 21 states, 21 states have (on average 40.38095238095238) internal successors, (848), 21 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:54,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:54,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-11-20 22:00:54,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:55,562 INFO L124 PetriNetUnfolderBase]: 2571/6325 cut-off events. [2024-11-20 22:00:55,563 INFO L125 PetriNetUnfolderBase]: For 14695/14713 co-relation queries the response was YES. [2024-11-20 22:00:55,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21056 conditions, 6325 events. 2571/6325 cut-off events. For 14695/14713 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 48668 event pairs, 1713 based on Foata normal form. 2/6114 useless extension candidates. Maximal degree in co-relation 20286. Up to 4310 conditions per place. [2024-11-20 22:00:55,599 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 95 selfloop transitions, 91 changer transitions 0/219 dead transitions. [2024-11-20 22:00:55,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 219 transitions, 2257 flow [2024-11-20 22:00:55,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 22:00:55,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-20 22:00:55,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 605 transitions. [2024-11-20 22:00:55,601 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5335097001763669 [2024-11-20 22:00:55,601 INFO L175 Difference]: Start difference. First operand has 176 places, 226 transitions, 1950 flow. Second operand 14 states and 605 transitions. [2024-11-20 22:00:55,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 219 transitions, 2257 flow [2024-11-20 22:00:55,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 219 transitions, 2248 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:00:55,656 INFO L231 Difference]: Finished difference. Result has 188 places, 219 transitions, 2058 flow [2024-11-20 22:00:55,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2058, PETRI_PLACES=188, PETRI_TRANSITIONS=219} [2024-11-20 22:00:55,657 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 111 predicate places. [2024-11-20 22:00:55,657 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 219 transitions, 2058 flow [2024-11-20 22:00:55,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 40.38095238095238) internal successors, (848), 21 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:55,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:55,657 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:55,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-20 22:00:55,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-20 22:00:55,858 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:55,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:55,859 INFO L85 PathProgramCache]: Analyzing trace with hash -159058206, now seen corresponding path program 1 times [2024-11-20 22:00:55,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:55,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14991180] [2024-11-20 22:00:55,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:55,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:55,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:00:55,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:55,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14991180] [2024-11-20 22:00:55,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14991180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:00:55,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:00:55,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:00:55,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050761908] [2024-11-20 22:00:55,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:00:55,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:00:55,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:55,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:00:55,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:00:55,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2024-11-20 22:00:55,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 219 transitions, 2058 flow. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:55,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:55,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2024-11-20 22:00:55,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:56,717 INFO L124 PetriNetUnfolderBase]: 2841/6700 cut-off events. [2024-11-20 22:00:56,718 INFO L125 PetriNetUnfolderBase]: For 13898/13944 co-relation queries the response was YES. [2024-11-20 22:00:56,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22473 conditions, 6700 events. 2841/6700 cut-off events. For 13898/13944 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 50627 event pairs, 1479 based on Foata normal form. 186/6867 useless extension candidates. Maximal degree in co-relation 21670. Up to 4098 conditions per place. [2024-11-20 22:00:56,756 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 210 selfloop transitions, 10 changer transitions 0/253 dead transitions. [2024-11-20 22:00:56,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 253 transitions, 2646 flow [2024-11-20 22:00:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:00:56,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:00:56,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2024-11-20 22:00:56,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7006172839506173 [2024-11-20 22:00:56,758 INFO L175 Difference]: Start difference. First operand has 188 places, 219 transitions, 2058 flow. Second operand 4 states and 227 transitions. [2024-11-20 22:00:56,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 253 transitions, 2646 flow [2024-11-20 22:00:56,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 253 transitions, 2556 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-11-20 22:00:56,905 INFO L231 Difference]: Finished difference. Result has 183 places, 220 transitions, 2007 flow [2024-11-20 22:00:56,906 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2007, PETRI_PLACES=183, PETRI_TRANSITIONS=220} [2024-11-20 22:00:56,906 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 106 predicate places. [2024-11-20 22:00:56,906 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 220 transitions, 2007 flow [2024-11-20 22:00:56,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:56,907 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:56,907 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:56,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-20 22:00:56,907 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:56,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:56,908 INFO L85 PathProgramCache]: Analyzing trace with hash 454948001, now seen corresponding path program 1 times [2024-11-20 22:00:56,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:56,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679998148] [2024-11-20 22:00:56,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:56,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:57,192 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:57,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:57,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679998148] [2024-11-20 22:00:57,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679998148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:00:57,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073560416] [2024-11-20 22:00:57,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:57,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:57,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:00:57,196 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:00:57,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 22:00:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:57,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 22:00:57,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:00:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:57,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:00:57,516 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:00:57,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073560416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:00:57,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:00:57,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-20 22:00:57,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031877130] [2024-11-20 22:00:57,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:00:57,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-20 22:00:57,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:57,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-20 22:00:57,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-20 22:00:57,581 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-11-20 22:00:57,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 220 transitions, 2007 flow. Second operand has 28 states, 28 states have (on average 40.25) internal successors, (1127), 28 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:57,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:57,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-11-20 22:00:57,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:00:58,898 INFO L124 PetriNetUnfolderBase]: 2788/7071 cut-off events. [2024-11-20 22:00:58,898 INFO L125 PetriNetUnfolderBase]: For 25300/25318 co-relation queries the response was YES. [2024-11-20 22:00:58,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26693 conditions, 7071 events. 2788/7071 cut-off events. For 25300/25318 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 55111 event pairs, 1713 based on Foata normal form. 203/7183 useless extension candidates. Maximal degree in co-relation 25631. Up to 4462 conditions per place. [2024-11-20 22:00:58,935 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 80 selfloop transitions, 219 changer transitions 0/332 dead transitions. [2024-11-20 22:00:58,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 332 transitions, 3935 flow [2024-11-20 22:00:58,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-20 22:00:58,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-20 22:00:58,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1173 transitions. [2024-11-20 22:00:58,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5569800569800569 [2024-11-20 22:00:58,938 INFO L175 Difference]: Start difference. First operand has 183 places, 220 transitions, 2007 flow. Second operand 26 states and 1173 transitions. [2024-11-20 22:00:58,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 332 transitions, 3935 flow [2024-11-20 22:00:59,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 332 transitions, 3921 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 22:00:59,020 INFO L231 Difference]: Finished difference. Result has 212 places, 332 transitions, 3875 flow [2024-11-20 22:00:59,020 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1993, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3875, PETRI_PLACES=212, PETRI_TRANSITIONS=332} [2024-11-20 22:00:59,020 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 135 predicate places. [2024-11-20 22:00:59,021 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 332 transitions, 3875 flow [2024-11-20 22:00:59,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 40.25) internal successors, (1127), 28 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:59,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:00:59,021 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:00:59,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-20 22:00:59,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-20 22:00:59,222 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:00:59,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:00:59,222 INFO L85 PathProgramCache]: Analyzing trace with hash 450201837, now seen corresponding path program 1 times [2024-11-20 22:00:59,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:00:59,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739720748] [2024-11-20 22:00:59,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:59,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:00:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 22:00:59,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:00:59,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739720748] [2024-11-20 22:00:59,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739720748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:00:59,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564307020] [2024-11-20 22:00:59,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:00:59,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:00:59,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:00:59,309 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:00:59,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 22:00:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:00:59,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:00:59,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:00:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 22:00:59,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:00:59,479 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 22:00:59,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564307020] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:00:59,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:00:59,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-20 22:00:59,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320883171] [2024-11-20 22:00:59,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:00:59,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 22:00:59,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:00:59,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 22:00:59,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 22:00:59,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2024-11-20 22:00:59,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 332 transitions, 3875 flow. Second operand has 12 states, 12 states have (on average 45.0) internal successors, (540), 12 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:00:59,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:00:59,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2024-11-20 22:00:59,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:01:01,069 INFO L124 PetriNetUnfolderBase]: 4228/9286 cut-off events. [2024-11-20 22:01:01,069 INFO L125 PetriNetUnfolderBase]: For 32702/32742 co-relation queries the response was YES. [2024-11-20 22:01:01,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35378 conditions, 9286 events. 4228/9286 cut-off events. For 32702/32742 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 69699 event pairs, 1059 based on Foata normal form. 306/9555 useless extension candidates. Maximal degree in co-relation 33728. Up to 4259 conditions per place. [2024-11-20 22:01:01,124 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 527 selfloop transitions, 20 changer transitions 0/581 dead transitions. [2024-11-20 22:01:01,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 581 transitions, 7061 flow [2024-11-20 22:01:01,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:01:01,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:01:01,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 569 transitions. [2024-11-20 22:01:01,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7024691358024692 [2024-11-20 22:01:01,126 INFO L175 Difference]: Start difference. First operand has 212 places, 332 transitions, 3875 flow. Second operand 10 states and 569 transitions. [2024-11-20 22:01:01,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 581 transitions, 7061 flow [2024-11-20 22:01:01,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 581 transitions, 6374 flow, removed 226 selfloop flow, removed 12 redundant places. [2024-11-20 22:01:01,218 INFO L231 Difference]: Finished difference. Result has 212 places, 341 transitions, 3282 flow [2024-11-20 22:01:01,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3188, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3282, PETRI_PLACES=212, PETRI_TRANSITIONS=341} [2024-11-20 22:01:01,219 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 135 predicate places. [2024-11-20 22:01:01,219 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 341 transitions, 3282 flow [2024-11-20 22:01:01,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.0) internal successors, (540), 12 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:01:01,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:01:01,220 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:01:01,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-20 22:01:01,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:01:01,420 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:01:01,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:01:01,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2050307041, now seen corresponding path program 1 times [2024-11-20 22:01:01,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:01:01,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029711971] [2024-11-20 22:01:01,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:01,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:01:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:01,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:01:01,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:01:01,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029711971] [2024-11-20 22:01:01,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029711971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:01:01,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:01:01,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 22:01:01,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475053807] [2024-11-20 22:01:01,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:01:01,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 22:01:01,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:01:01,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 22:01:01,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-20 22:01:01,698 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-11-20 22:01:01,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 341 transitions, 3282 flow. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:01:01,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:01:01,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-11-20 22:01:01,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:01:03,111 INFO L124 PetriNetUnfolderBase]: 4170/9958 cut-off events. [2024-11-20 22:01:03,112 INFO L125 PetriNetUnfolderBase]: For 27322/27393 co-relation queries the response was YES. [2024-11-20 22:01:03,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37016 conditions, 9958 events. 4170/9958 cut-off events. For 27322/27393 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 80865 event pairs, 1515 based on Foata normal form. 180/10108 useless extension candidates. Maximal degree in co-relation 35551. Up to 4395 conditions per place. [2024-11-20 22:01:03,173 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 413 selfloop transitions, 7 changer transitions 11/461 dead transitions. [2024-11-20 22:01:03,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 461 transitions, 5193 flow [2024-11-20 22:01:03,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 22:01:03,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 22:01:03,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 268 transitions. [2024-11-20 22:01:03,175 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6617283950617284 [2024-11-20 22:01:03,175 INFO L175 Difference]: Start difference. First operand has 212 places, 341 transitions, 3282 flow. Second operand 5 states and 268 transitions. [2024-11-20 22:01:03,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 461 transitions, 5193 flow [2024-11-20 22:01:03,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 461 transitions, 5146 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-20 22:01:03,320 INFO L231 Difference]: Finished difference. Result has 214 places, 339 transitions, 3264 flow [2024-11-20 22:01:03,320 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3250, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3264, PETRI_PLACES=214, PETRI_TRANSITIONS=339} [2024-11-20 22:01:03,321 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 137 predicate places. [2024-11-20 22:01:03,321 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 339 transitions, 3264 flow [2024-11-20 22:01:03,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:01:03,321 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:01:03,322 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:01:03,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-20 22:01:03,322 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:01:03,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:01:03,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1284501350, now seen corresponding path program 2 times [2024-11-20 22:01:03,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:01:03,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863041723] [2024-11-20 22:01:03,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:03,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:01:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:03,554 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:01:03,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:01:03,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863041723] [2024-11-20 22:01:03,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863041723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:01:03,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517145504] [2024-11-20 22:01:03,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:01:03,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:01:03,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:01:03,558 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:01:03,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-20 22:01:03,680 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 22:01:03,680 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:01:03,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:01:03,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:01:03,749 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-20 22:01:03,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:01:03,803 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-20 22:01:03,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517145504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:01:03,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:01:03,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-20 22:01:03,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387292326] [2024-11-20 22:01:03,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:01:03,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 22:01:03,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:01:03,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 22:01:03,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-20 22:01:03,847 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2024-11-20 22:01:03,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 339 transitions, 3264 flow. Second operand has 15 states, 15 states have (on average 43.2) internal successors, (648), 15 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:01:03,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:01:03,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2024-11-20 22:01:03,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:01:05,409 INFO L124 PetriNetUnfolderBase]: 3984/9643 cut-off events. [2024-11-20 22:01:05,409 INFO L125 PetriNetUnfolderBase]: For 29579/29587 co-relation queries the response was YES. [2024-11-20 22:01:05,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36520 conditions, 9643 events. 3984/9643 cut-off events. For 29579/29587 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 77433 event pairs, 2541 based on Foata normal form. 12/9530 useless extension candidates. Maximal degree in co-relation 34866. Up to 5803 conditions per place. [2024-11-20 22:01:05,464 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 483 selfloop transitions, 138 changer transitions 0/655 dead transitions. [2024-11-20 22:01:05,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 655 transitions, 8122 flow [2024-11-20 22:01:05,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 22:01:05,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-20 22:01:05,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 684 transitions. [2024-11-20 22:01:05,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2024-11-20 22:01:05,466 INFO L175 Difference]: Start difference. First operand has 214 places, 339 transitions, 3264 flow. Second operand 15 states and 684 transitions. [2024-11-20 22:01:05,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 655 transitions, 8122 flow [2024-11-20 22:01:05,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 655 transitions, 8036 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-11-20 22:01:05,568 INFO L231 Difference]: Finished difference. Result has 220 places, 361 transitions, 3741 flow [2024-11-20 22:01:05,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3170, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3741, PETRI_PLACES=220, PETRI_TRANSITIONS=361} [2024-11-20 22:01:05,569 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 143 predicate places. [2024-11-20 22:01:05,569 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 361 transitions, 3741 flow [2024-11-20 22:01:05,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 43.2) internal successors, (648), 15 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:01:05,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:01:05,570 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:01:05,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-20 22:01:05,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-20 22:01:05,770 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:01:05,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:01:05,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1487302528, now seen corresponding path program 1 times [2024-11-20 22:01:05,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:01:05,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346744693] [2024-11-20 22:01:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:05,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:01:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:05,851 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 22:01:05,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:01:05,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346744693] [2024-11-20 22:01:05,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346744693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:01:05,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12130267] [2024-11-20 22:01:05,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:05,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:01:05,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:01:05,854 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:01:05,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-20 22:01:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:05,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:01:05,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:01:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 22:01:06,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:01:06,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 22:01:06,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12130267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:01:06,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:01:06,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-20 22:01:06,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612216772] [2024-11-20 22:01:06,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:01:06,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 22:01:06,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:01:06,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 22:01:06,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 22:01:06,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2024-11-20 22:01:06,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 361 transitions, 3741 flow. Second operand has 12 states, 12 states have (on average 43.583333333333336) internal successors, (523), 12 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:01:06,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:01:06,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2024-11-20 22:01:06,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:01:08,785 INFO L124 PetriNetUnfolderBase]: 8019/17857 cut-off events. [2024-11-20 22:01:08,785 INFO L125 PetriNetUnfolderBase]: For 42153/42301 co-relation queries the response was YES. [2024-11-20 22:01:08,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64277 conditions, 17857 events. 8019/17857 cut-off events. For 42153/42301 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 150223 event pairs, 1476 based on Foata normal form. 258/18096 useless extension candidates. Maximal degree in co-relation 62651. Up to 5182 conditions per place. [2024-11-20 22:01:08,912 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 555 selfloop transitions, 28 changer transitions 0/613 dead transitions. [2024-11-20 22:01:08,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 613 transitions, 6464 flow [2024-11-20 22:01:08,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:01:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:01:08,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 533 transitions. [2024-11-20 22:01:08,913 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6580246913580247 [2024-11-20 22:01:08,914 INFO L175 Difference]: Start difference. First operand has 220 places, 361 transitions, 3741 flow. Second operand 10 states and 533 transitions. [2024-11-20 22:01:08,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 613 transitions, 6464 flow [2024-11-20 22:01:09,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 613 transitions, 6100 flow, removed 42 selfloop flow, removed 11 redundant places. [2024-11-20 22:01:09,300 INFO L231 Difference]: Finished difference. Result has 221 places, 376 transitions, 3623 flow [2024-11-20 22:01:09,301 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3377, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3623, PETRI_PLACES=221, PETRI_TRANSITIONS=376} [2024-11-20 22:01:09,301 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 144 predicate places. [2024-11-20 22:01:09,301 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 376 transitions, 3623 flow [2024-11-20 22:01:09,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 43.583333333333336) internal successors, (523), 12 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:01:09,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:01:09,302 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:01:09,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-20 22:01:09,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:01:09,502 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:01:09,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:01:09,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1330563944, now seen corresponding path program 1 times [2024-11-20 22:01:09,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:01:09,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365519270] [2024-11-20 22:01:09,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:09,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:01:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:01:09,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:01:09,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365519270] [2024-11-20 22:01:09,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365519270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:01:09,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608971980] [2024-11-20 22:01:09,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:09,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:01:09,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:01:09,589 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:01:09,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-20 22:01:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:09,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 22:01:09,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:01:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:01:09,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:01:09,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:01:09,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608971980] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 22:01:09,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 22:01:09,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2024-11-20 22:01:09,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452492486] [2024-11-20 22:01:09,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:01:09,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 22:01:09,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:01:09,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 22:01:09,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-20 22:01:09,840 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 81 [2024-11-20 22:01:09,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 376 transitions, 3623 flow. Second operand has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:01:09,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:01:09,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 81 [2024-11-20 22:01:09,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:01:12,474 INFO L124 PetriNetUnfolderBase]: 6756/16986 cut-off events. [2024-11-20 22:01:12,474 INFO L125 PetriNetUnfolderBase]: For 51010/51076 co-relation queries the response was YES. [2024-11-20 22:01:12,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60888 conditions, 16986 events. 6756/16986 cut-off events. For 51010/51076 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 143748 event pairs, 2820 based on Foata normal form. 301/17263 useless extension candidates. Maximal degree in co-relation 59198. Up to 4772 conditions per place. [2024-11-20 22:01:12,577 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 405 selfloop transitions, 26 changer transitions 1/466 dead transitions. [2024-11-20 22:01:12,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 466 transitions, 5111 flow [2024-11-20 22:01:12,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 22:01:12,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 22:01:12,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 288 transitions. [2024-11-20 22:01:12,578 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2024-11-20 22:01:12,578 INFO L175 Difference]: Start difference. First operand has 221 places, 376 transitions, 3623 flow. Second operand 5 states and 288 transitions. [2024-11-20 22:01:12,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 466 transitions, 5111 flow [2024-11-20 22:01:12,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 466 transitions, 5081 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-20 22:01:12,731 INFO L231 Difference]: Finished difference. Result has 227 places, 387 transitions, 3880 flow [2024-11-20 22:01:12,731 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3504, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3880, PETRI_PLACES=227, PETRI_TRANSITIONS=387} [2024-11-20 22:01:12,732 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 150 predicate places. [2024-11-20 22:01:12,732 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 387 transitions, 3880 flow [2024-11-20 22:01:12,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:01:12,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:01:12,732 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:01:12,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-20 22:01:12,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:01:12,933 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:01:12,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:01:12,933 INFO L85 PathProgramCache]: Analyzing trace with hash -158211297, now seen corresponding path program 1 times [2024-11-20 22:01:12,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:01:12,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623468097] [2024-11-20 22:01:12,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:12,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:01:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:13,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:01:13,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:01:13,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623468097] [2024-11-20 22:01:13,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623468097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:01:13,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858385081] [2024-11-20 22:01:13,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:13,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:01:13,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:01:13,052 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:01:13,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-20 22:01:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:13,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 22:01:13,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:01:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:01:13,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:01:13,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:01:13,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858385081] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:01:13,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:01:13,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-20 22:01:13,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405872414] [2024-11-20 22:01:13,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:01:13,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-20 22:01:13,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:01:13,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 22:01:13,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-20 22:01:14,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 81 [2024-11-20 22:01:14,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 387 transitions, 3880 flow. Second operand has 19 states, 19 states have (on average 33.89473684210526) internal successors, (644), 19 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:01:14,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:01:14,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 81 [2024-11-20 22:01:14,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:01:20,822 INFO L124 PetriNetUnfolderBase]: 19738/36762 cut-off events. [2024-11-20 22:01:20,822 INFO L125 PetriNetUnfolderBase]: For 105654/106038 co-relation queries the response was YES. [2024-11-20 22:01:21,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136535 conditions, 36762 events. 19738/36762 cut-off events. For 105654/106038 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 274428 event pairs, 6285 based on Foata normal form. 516/37236 useless extension candidates. Maximal degree in co-relation 134869. Up to 9791 conditions per place. [2024-11-20 22:01:21,212 INFO L140 encePairwiseOnDemand]: 64/81 looper letters, 611 selfloop transitions, 221 changer transitions 0/854 dead transitions. [2024-11-20 22:01:21,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 854 transitions, 8892 flow [2024-11-20 22:01:21,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-20 22:01:21,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-20 22:01:21,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 788 transitions. [2024-11-20 22:01:21,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48641975308641977 [2024-11-20 22:01:21,214 INFO L175 Difference]: Start difference. First operand has 227 places, 387 transitions, 3880 flow. Second operand 20 states and 788 transitions. [2024-11-20 22:01:21,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 854 transitions, 8892 flow [2024-11-20 22:01:21,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 854 transitions, 8883 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:01:21,689 INFO L231 Difference]: Finished difference. Result has 251 places, 479 transitions, 5717 flow [2024-11-20 22:01:21,689 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3875, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5717, PETRI_PLACES=251, PETRI_TRANSITIONS=479} [2024-11-20 22:01:21,690 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 174 predicate places. [2024-11-20 22:01:21,690 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 479 transitions, 5717 flow [2024-11-20 22:01:21,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 33.89473684210526) internal successors, (644), 19 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:01:21,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:01:21,691 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:01:21,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-20 22:01:21,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:01:21,896 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:01:21,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:01:21,896 INFO L85 PathProgramCache]: Analyzing trace with hash -759246699, now seen corresponding path program 2 times [2024-11-20 22:01:21,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:01:21,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938157793] [2024-11-20 22:01:21,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:21,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:01:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:22,097 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-20 22:01:22,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:01:22,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938157793] [2024-11-20 22:01:22,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938157793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:01:22,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995357167] [2024-11-20 22:01:22,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:01:22,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:01:22,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:01:22,101 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:01:22,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-20 22:01:22,240 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 22:01:22,240 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:01:22,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:01:22,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:01:23,181 WARN L873 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= c_~L~0 .cse0)))) is different from true [2024-11-20 22:01:24,288 WARN L873 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_thread1Thread1of1ForFork1_#t~post2| 1) .cse0)))) is different from true [2024-11-20 22:01:24,296 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 8 not checked. [2024-11-20 22:01:24,297 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:01:24,347 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-20 22:01:24,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995357167] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:01:24,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:01:24,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 12 [2024-11-20 22:01:24,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270660012] [2024-11-20 22:01:24,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:01:24,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 22:01:24,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:01:24,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 22:01:24,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=87, Unknown=2, NotChecked=38, Total=156 [2024-11-20 22:01:24,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-11-20 22:01:24,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 479 transitions, 5717 flow. Second operand has 13 states, 13 states have (on average 37.53846153846154) internal successors, (488), 13 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:01:24,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:01:24,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-11-20 22:01:24,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:01:39,198 INFO L124 PetriNetUnfolderBase]: 30216/64054 cut-off events. [2024-11-20 22:01:39,198 INFO L125 PetriNetUnfolderBase]: For 280522/280588 co-relation queries the response was YES. [2024-11-20 22:01:39,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255446 conditions, 64054 events. 30216/64054 cut-off events. For 280522/280588 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 590154 event pairs, 8732 based on Foata normal form. 886/64332 useless extension candidates. Maximal degree in co-relation 251567. Up to 15044 conditions per place. [2024-11-20 22:01:40,086 INFO L140 encePairwiseOnDemand]: 53/81 looper letters, 484 selfloop transitions, 400 changer transitions 64/979 dead transitions. [2024-11-20 22:01:40,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 979 transitions, 13356 flow [2024-11-20 22:01:40,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-20 22:01:40,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-20 22:01:40,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 779 transitions. [2024-11-20 22:01:40,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2024-11-20 22:01:40,088 INFO L175 Difference]: Start difference. First operand has 251 places, 479 transitions, 5717 flow. Second operand 19 states and 779 transitions. [2024-11-20 22:01:40,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 979 transitions, 13356 flow [2024-11-20 22:01:41,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 979 transitions, 12929 flow, removed 70 selfloop flow, removed 9 redundant places. [2024-11-20 22:01:41,776 INFO L231 Difference]: Finished difference. Result has 265 places, 729 transitions, 10464 flow [2024-11-20 22:01:41,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=5555, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=10464, PETRI_PLACES=265, PETRI_TRANSITIONS=729} [2024-11-20 22:01:41,777 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 188 predicate places. [2024-11-20 22:01:41,777 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 729 transitions, 10464 flow [2024-11-20 22:01:41,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.53846153846154) internal successors, (488), 13 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:01:41,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:01:41,777 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:01:41,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-20 22:01:41,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:01:41,978 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-20 22:01:41,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:01:41,978 INFO L85 PathProgramCache]: Analyzing trace with hash 503291331, now seen corresponding path program 1 times [2024-11-20 22:01:41,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:01:41,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909610286] [2024-11-20 22:01:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:41,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:01:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 22:01:42,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232212520] [2024-11-20 22:01:42,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:01:42,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:01:42,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:01:42,010 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:01:42,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-20 22:01:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:01:42,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 22:01:42,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:01:42,220 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 22:01:42,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:01:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 22:01:51,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:01:51,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909610286] [2024-11-20 22:01:51,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 22:01:51,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232212520] [2024-11-20 22:01:51,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232212520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:01:51,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 22:01:51,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-20 22:01:51,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039996671] [2024-11-20 22:01:51,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 22:01:51,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 22:01:51,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:01:51,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 22:01:51,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=44, Unknown=3, NotChecked=0, Total=72