./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:55:34,494 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:55:34,559 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:55:34,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:55:34,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:55:34,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:55:34,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:55:34,597 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:55:34,598 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:55:34,600 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:55:34,600 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:55:34,600 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:55:34,601 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:55:34,601 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:55:34,604 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:55:34,605 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:55:34,605 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:55:34,605 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:55:34,605 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:55:34,606 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:55:34,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:55:34,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:55:34,608 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:55:34,608 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:55:34,608 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:55:34,608 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:55:34,609 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:55:34,609 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:55:34,609 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:55:34,609 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:55:34,610 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:55:34,610 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:55:34,610 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:55:34,610 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:55:34,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:55:34,611 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:55:34,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:55:34,612 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:55:34,612 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:55:34,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:55:34,613 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:55:34,613 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:55:34,613 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:55:34,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:55:34,615 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 [2024-11-23 01:55:34,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:55:34,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:55:34,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:55:34,886 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:55:34,886 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:55:34,888 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2024-11-23 01:55:36,333 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:55:36,512 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:55:36,512 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2024-11-23 01:55:36,519 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/625d58bf8/0a42c216dae041da885df3ea07c11469/FLAG5577caa46 [2024-11-23 01:55:36,530 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/625d58bf8/0a42c216dae041da885df3ea07c11469 [2024-11-23 01:55:36,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:55:36,534 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:55:36,535 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:55:36,535 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:55:36,542 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:55:36,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:36" (1/1) ... [2024-11-23 01:55:36,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62b2fda4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:36, skipping insertion in model container [2024-11-23 01:55:36,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:36" (1/1) ... [2024-11-23 01:55:36,571 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:55:36,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:55:36,783 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:55:36,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:55:36,857 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:55:36,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:36 WrapperNode [2024-11-23 01:55:36,858 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:55:36,859 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:55:36,859 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:55:36,859 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:55:36,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:36" (1/1) ... [2024-11-23 01:55:36,877 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:36" (1/1) ... [2024-11-23 01:55:36,907 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 19, calls inlined = 25, statements flattened = 337 [2024-11-23 01:55:36,908 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:55:36,910 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:55:36,910 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:55:36,910 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:55:36,920 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:36" (1/1) ... [2024-11-23 01:55:36,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:36" (1/1) ... [2024-11-23 01:55:36,924 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:36" (1/1) ... [2024-11-23 01:55:36,943 INFO L175 MemorySlicer]: Split 18 memory accesses to 3 slices as follows [2, 10, 6]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2024-11-23 01:55:36,944 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:36" (1/1) ... [2024-11-23 01:55:36,944 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:36" (1/1) ... [2024-11-23 01:55:36,954 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:36" (1/1) ... [2024-11-23 01:55:36,962 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:36" (1/1) ... [2024-11-23 01:55:36,968 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:36" (1/1) ... [2024-11-23 01:55:36,971 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:36" (1/1) ... [2024-11-23 01:55:36,974 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:55:36,975 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:55:36,976 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:55:36,976 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:55:36,977 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:36" (1/1) ... [2024-11-23 01:55:36,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:55:36,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:37,013 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) [2024-11-23 01:55:37,015 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 [2024-11-23 01:55:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:55:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 01:55:37,065 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 01:55:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 01:55:37,065 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 01:55:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:55:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 01:55:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 01:55:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:55:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 01:55:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 01:55:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 01:55:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:55:37,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:55:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 01:55:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 01:55:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 01:55:37,069 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:55:37,177 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:55:37,179 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:55:37,712 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:55:37,712 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:55:38,067 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:55:38,068 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-23 01:55:38,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:38 BoogieIcfgContainer [2024-11-23 01:55:38,070 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:55:38,074 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:55:38,074 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:55:38,079 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:55:38,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:55:36" (1/3) ... [2024-11-23 01:55:38,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22da2be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:38, skipping insertion in model container [2024-11-23 01:55:38,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:36" (2/3) ... [2024-11-23 01:55:38,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22da2be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:38, skipping insertion in model container [2024-11-23 01:55:38,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:38" (3/3) ... [2024-11-23 01:55:38,083 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2024-11-23 01:55:38,099 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:55:38,100 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-23 01:55:38,100 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:55:38,206 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-23 01:55:38,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 97 transitions, 208 flow [2024-11-23 01:55:38,336 INFO L124 PetriNetUnfolderBase]: 10/95 cut-off events. [2024-11-23 01:55:38,337 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 01:55:38,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 10/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 240 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-11-23 01:55:38,341 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 97 transitions, 208 flow [2024-11-23 01:55:38,345 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 94 transitions, 200 flow [2024-11-23 01:55:38,355 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:55:38,361 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;@3b63ec0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:55:38,362 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-11-23 01:55:38,364 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:55:38,364 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-23 01:55:38,365 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:55:38,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:38,365 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-23 01:55:38,366 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:38,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:38,370 INFO L85 PathProgramCache]: Analyzing trace with hash 33036, now seen corresponding path program 1 times [2024-11-23 01:55:38,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:38,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699103252] [2024-11-23 01:55:38,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:38,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:38,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:38,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:38,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699103252] [2024-11-23 01:55:38,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699103252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:38,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:38,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 01:55:38,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912095789] [2024-11-23 01:55:38,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:38,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:55:38,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:38,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:55:38,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:55:38,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-23 01:55:38,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:38,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:38,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-23 01:55:38,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:38,859 INFO L124 PetriNetUnfolderBase]: 285/731 cut-off events. [2024-11-23 01:55:38,859 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-23 01:55:38,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 731 events. 285/731 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4327 event pairs, 176 based on Foata normal form. 4/575 useless extension candidates. Maximal degree in co-relation 1096. Up to 450 conditions per place. [2024-11-23 01:55:38,870 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 41 selfloop transitions, 1 changer transitions 2/90 dead transitions. [2024-11-23 01:55:38,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 278 flow [2024-11-23 01:55:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:55:38,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:55:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2024-11-23 01:55:38,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-23 01:55:38,886 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 200 flow. Second operand 3 states and 194 transitions. [2024-11-23 01:55:38,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 278 flow [2024-11-23 01:55:38,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 90 transitions, 270 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 01:55:38,894 INFO L231 Difference]: Finished difference. Result has 85 places, 88 transitions, 181 flow [2024-11-23 01:55:38,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=85, PETRI_TRANSITIONS=88} [2024-11-23 01:55:38,903 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -6 predicate places. [2024-11-23 01:55:38,903 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 88 transitions, 181 flow [2024-11-23 01:55:38,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:38,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:38,904 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 01:55:38,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 01:55:38,905 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:38,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:38,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1025119, now seen corresponding path program 1 times [2024-11-23 01:55:38,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:38,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812233252] [2024-11-23 01:55:38,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:38,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:38,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:38,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:38,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812233252] [2024-11-23 01:55:38,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812233252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:38,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:38,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 01:55:38,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504462460] [2024-11-23 01:55:38,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:38,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:55:38,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:38,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:55:38,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:55:39,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-23 01:55:39,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 88 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:39,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:39,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-23 01:55:39,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:39,163 INFO L124 PetriNetUnfolderBase]: 285/727 cut-off events. [2024-11-23 01:55:39,163 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-23 01:55:39,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 727 events. 285/727 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4302 event pairs, 176 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 1180. Up to 447 conditions per place. [2024-11-23 01:55:39,169 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 39 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2024-11-23 01:55:39,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 86 transitions, 257 flow [2024-11-23 01:55:39,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:55:39,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:55:39,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2024-11-23 01:55:39,171 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6494845360824743 [2024-11-23 01:55:39,172 INFO L175 Difference]: Start difference. First operand has 85 places, 88 transitions, 181 flow. Second operand 3 states and 189 transitions. [2024-11-23 01:55:39,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 86 transitions, 257 flow [2024-11-23 01:55:39,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 86 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:55:39,174 INFO L231 Difference]: Finished difference. Result has 82 places, 86 transitions, 178 flow [2024-11-23 01:55:39,174 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=82, PETRI_TRANSITIONS=86} [2024-11-23 01:55:39,175 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -9 predicate places. [2024-11-23 01:55:39,175 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 86 transitions, 178 flow [2024-11-23 01:55:39,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:39,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:39,176 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 01:55:39,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 01:55:39,176 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:39,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:39,177 INFO L85 PathProgramCache]: Analyzing trace with hash 985171895, now seen corresponding path program 1 times [2024-11-23 01:55:39,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:39,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134639770] [2024-11-23 01:55:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:39,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:39,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:39,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134639770] [2024-11-23 01:55:39,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134639770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:39,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:39,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:55:39,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333235358] [2024-11-23 01:55:39,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:39,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:39,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:39,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:39,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:55:39,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-23 01:55:39,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 86 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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) [2024-11-23 01:55:39,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:39,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-23 01:55:39,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:39,518 INFO L124 PetriNetUnfolderBase]: 287/735 cut-off events. [2024-11-23 01:55:39,518 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-23 01:55:39,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 735 events. 287/735 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4338 event pairs, 176 based on Foata normal form. 2/577 useless extension candidates. Maximal degree in co-relation 1198. Up to 454 conditions per place. [2024-11-23 01:55:39,522 INFO L140 encePairwiseOnDemand]: 85/97 looper letters, 42 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2024-11-23 01:55:39,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 92 transitions, 290 flow [2024-11-23 01:55:39,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:39,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 250 transitions. [2024-11-23 01:55:39,525 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6443298969072165 [2024-11-23 01:55:39,525 INFO L175 Difference]: Start difference. First operand has 82 places, 86 transitions, 178 flow. Second operand 4 states and 250 transitions. [2024-11-23 01:55:39,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 92 transitions, 290 flow [2024-11-23 01:55:39,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 92 transitions, 289 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:55:39,531 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 235 flow [2024-11-23 01:55:39,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-11-23 01:55:39,532 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2024-11-23 01:55:39,533 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 235 flow [2024-11-23 01:55:39,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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) [2024-11-23 01:55:39,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:39,534 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 01:55:39,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 01:55:39,534 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:39,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:39,535 INFO L85 PathProgramCache]: Analyzing trace with hash 985171910, now seen corresponding path program 1 times [2024-11-23 01:55:39,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:39,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015603387] [2024-11-23 01:55:39,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:39,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:39,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:39,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:39,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015603387] [2024-11-23 01:55:39,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015603387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:39,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:39,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 01:55:39,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360710903] [2024-11-23 01:55:39,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:39,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:55:39,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:39,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:55:39,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:55:39,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-23 01:55:39,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2024-11-23 01:55:39,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:39,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-23 01:55:39,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:39,729 INFO L124 PetriNetUnfolderBase]: 287/733 cut-off events. [2024-11-23 01:55:39,729 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-23 01:55:39,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1227 conditions, 733 events. 287/733 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4323 event pairs, 176 based on Foata normal form. 2/580 useless extension candidates. Maximal degree in co-relation 1218. Up to 455 conditions per place. [2024-11-23 01:55:39,733 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 47 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2024-11-23 01:55:39,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 327 flow [2024-11-23 01:55:39,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:55:39,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:55:39,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2024-11-23 01:55:39,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6563573883161512 [2024-11-23 01:55:39,735 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 235 flow. Second operand 3 states and 191 transitions. [2024-11-23 01:55:39,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 327 flow [2024-11-23 01:55:39,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 90 transitions, 321 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:55:39,738 INFO L231 Difference]: Finished difference. Result has 85 places, 90 transitions, 227 flow [2024-11-23 01:55:39,738 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=85, PETRI_TRANSITIONS=90} [2024-11-23 01:55:39,739 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -6 predicate places. [2024-11-23 01:55:39,739 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 90 transitions, 227 flow [2024-11-23 01:55:39,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2024-11-23 01:55:39,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:39,740 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 01:55:39,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 01:55:39,740 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:39,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:39,740 INFO L85 PathProgramCache]: Analyzing trace with hash 475559153, now seen corresponding path program 1 times [2024-11-23 01:55:39,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:39,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936399859] [2024-11-23 01:55:39,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:39,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:39,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:39,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936399859] [2024-11-23 01:55:39,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936399859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:39,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:39,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 01:55:39,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338038102] [2024-11-23 01:55:39,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:39,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:55:39,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:39,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:55:39,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:55:39,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-23 01:55:39,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 90 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2024-11-23 01:55:39,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:39,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-23 01:55:39,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:39,908 INFO L124 PetriNetUnfolderBase]: 287/731 cut-off events. [2024-11-23 01:55:39,909 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-23 01:55:39,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 731 events. 287/731 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4324 event pairs, 176 based on Foata normal form. 1/578 useless extension candidates. Maximal degree in co-relation 1210. Up to 453 conditions per place. [2024-11-23 01:55:39,913 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 45 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2024-11-23 01:55:39,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 88 transitions, 315 flow [2024-11-23 01:55:39,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:55:39,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:55:39,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2024-11-23 01:55:39,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6494845360824743 [2024-11-23 01:55:39,915 INFO L175 Difference]: Start difference. First operand has 85 places, 90 transitions, 227 flow. Second operand 3 states and 189 transitions. [2024-11-23 01:55:39,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 88 transitions, 315 flow [2024-11-23 01:55:39,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 88 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:55:39,918 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 224 flow [2024-11-23 01:55:39,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2024-11-23 01:55:39,920 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -7 predicate places. [2024-11-23 01:55:39,921 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 224 flow [2024-11-23 01:55:39,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2024-11-23 01:55:39,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:39,922 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:39,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 01:55:39,922 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:39,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:39,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1745404094, now seen corresponding path program 1 times [2024-11-23 01:55:39,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:39,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075368065] [2024-11-23 01:55:39,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:39,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:40,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:40,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:40,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075368065] [2024-11-23 01:55:40,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075368065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:40,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683146412] [2024-11-23 01:55:40,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:40,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:40,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:40,032 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) [2024-11-23 01:55:40,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 01:55:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:40,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:55:40,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:40,171 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:40,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683146412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:40,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:40,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 01:55:40,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270140215] [2024-11-23 01:55:40,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:40,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:55:40,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:40,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:55:40,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:55:40,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-23 01:55:40,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 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) [2024-11-23 01:55:40,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:40,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-23 01:55:40,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:40,397 INFO L124 PetriNetUnfolderBase]: 287/729 cut-off events. [2024-11-23 01:55:40,398 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-23 01:55:40,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1219 conditions, 729 events. 287/729 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4303 event pairs, 176 based on Foata normal form. 2/575 useless extension candidates. Maximal degree in co-relation 1208. Up to 444 conditions per place. [2024-11-23 01:55:40,402 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 34 selfloop transitions, 14 changer transitions 0/86 dead transitions. [2024-11-23 01:55:40,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 86 transitions, 312 flow [2024-11-23 01:55:40,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:55:40,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:55:40,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 344 transitions. [2024-11-23 01:55:40,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5910652920962199 [2024-11-23 01:55:40,404 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 224 flow. Second operand 6 states and 344 transitions. [2024-11-23 01:55:40,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 86 transitions, 312 flow [2024-11-23 01:55:40,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 86 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:55:40,408 INFO L231 Difference]: Finished difference. Result has 86 places, 86 transitions, 243 flow [2024-11-23 01:55:40,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=243, PETRI_PLACES=86, PETRI_TRANSITIONS=86} [2024-11-23 01:55:40,409 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2024-11-23 01:55:40,410 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 86 transitions, 243 flow [2024-11-23 01:55:40,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 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) [2024-11-23 01:55:40,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:40,411 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-23 01:55:40,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 01:55:40,615 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,SelfDestructingSolverStorable5 [2024-11-23 01:55:40,616 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:40,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:40,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1727046913, now seen corresponding path program 1 times [2024-11-23 01:55:40,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:40,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287335384] [2024-11-23 01:55:40,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:40,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:40,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:40,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:40,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287335384] [2024-11-23 01:55:40,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287335384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:40,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715324714] [2024-11-23 01:55:40,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:40,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:40,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:40,706 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) [2024-11-23 01:55:40,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 01:55:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:40,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:55:40,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:40,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:40,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:55:40,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:40,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715324714] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:55:40,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:55:40,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 01:55:40,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389813700] [2024-11-23 01:55:40,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:55:40,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 01:55:40,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:40,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 01:55:40,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 01:55:40,904 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-23 01:55:40,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 86 transitions, 243 flow. Second operand has 12 states, 12 states have (on average 50.166666666666664) internal successors, (602), 12 states have internal predecessors, (602), 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) [2024-11-23 01:55:40,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:40,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-23 01:55:40,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:41,138 INFO L124 PetriNetUnfolderBase]: 293/753 cut-off events. [2024-11-23 01:55:41,138 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-11-23 01:55:41,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1311 conditions, 753 events. 293/753 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4455 event pairs, 176 based on Foata normal form. 6/599 useless extension candidates. Maximal degree in co-relation 1300. Up to 458 conditions per place. [2024-11-23 01:55:41,142 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 40 selfloop transitions, 26 changer transitions 0/104 dead transitions. [2024-11-23 01:55:41,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 104 transitions, 483 flow [2024-11-23 01:55:41,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 01:55:41,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 01:55:41,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 562 transitions. [2024-11-23 01:55:41,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5793814432989691 [2024-11-23 01:55:41,144 INFO L175 Difference]: Start difference. First operand has 86 places, 86 transitions, 243 flow. Second operand 10 states and 562 transitions. [2024-11-23 01:55:41,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 104 transitions, 483 flow [2024-11-23 01:55:41,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 104 transitions, 423 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-11-23 01:55:41,147 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 379 flow [2024-11-23 01:55:41,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=379, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2024-11-23 01:55:41,148 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2024-11-23 01:55:41,148 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 379 flow [2024-11-23 01:55:41,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.166666666666664) internal successors, (602), 12 states have internal predecessors, (602), 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) [2024-11-23 01:55:41,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:41,149 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:41,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 01:55:41,350 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,SelfDestructingSolverStorable6 [2024-11-23 01:55:41,350 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:41,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:41,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1547741103, now seen corresponding path program 1 times [2024-11-23 01:55:41,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:41,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193362901] [2024-11-23 01:55:41,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:41,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:41,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:41,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193362901] [2024-11-23 01:55:41,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193362901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:41,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:41,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:55:41,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888948093] [2024-11-23 01:55:41,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:41,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:41,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:41,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:41,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:55:41,452 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-23 01:55:41,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 379 flow. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2024-11-23 01:55:41,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:41,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-23 01:55:41,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:41,609 INFO L124 PetriNetUnfolderBase]: 295/761 cut-off events. [2024-11-23 01:55:41,610 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-23 01:55:41,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1339 conditions, 761 events. 295/761 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4523 event pairs, 176 based on Foata normal form. 2/607 useless extension candidates. Maximal degree in co-relation 1326. Up to 478 conditions per place. [2024-11-23 01:55:41,614 INFO L140 encePairwiseOnDemand]: 85/97 looper letters, 66 selfloop transitions, 8 changer transitions 0/110 dead transitions. [2024-11-23 01:55:41,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 110 transitions, 539 flow [2024-11-23 01:55:41,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:41,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 250 transitions. [2024-11-23 01:55:41,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6443298969072165 [2024-11-23 01:55:41,615 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 379 flow. Second operand 4 states and 250 transitions. [2024-11-23 01:55:41,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 110 transitions, 539 flow [2024-11-23 01:55:41,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 110 transitions, 517 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-23 01:55:41,634 INFO L231 Difference]: Finished difference. Result has 97 places, 110 transitions, 415 flow [2024-11-23 01:55:41,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=415, PETRI_PLACES=97, PETRI_TRANSITIONS=110} [2024-11-23 01:55:41,636 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 6 predicate places. [2024-11-23 01:55:41,637 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 110 transitions, 415 flow [2024-11-23 01:55:41,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2024-11-23 01:55:41,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:41,638 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:41,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 01:55:41,638 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:41,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:41,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2014698696, now seen corresponding path program 1 times [2024-11-23 01:55:41,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:41,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176525583] [2024-11-23 01:55:41,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:41,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:55:41,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:41,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176525583] [2024-11-23 01:55:41,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176525583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:41,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:41,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:55:41,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695449497] [2024-11-23 01:55:41,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:41,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:41,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:41,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:41,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:55:41,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-23 01:55:41,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 110 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2024-11-23 01:55:41,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:41,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-23 01:55:41,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:41,865 INFO L124 PetriNetUnfolderBase]: 294/760 cut-off events. [2024-11-23 01:55:41,865 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-11-23 01:55:41,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 760 events. 294/760 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4471 event pairs, 176 based on Foata normal form. 1/609 useless extension candidates. Maximal degree in co-relation 1333. Up to 474 conditions per place. [2024-11-23 01:55:41,869 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 66 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2024-11-23 01:55:41,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 109 transitions, 549 flow [2024-11-23 01:55:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:41,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:41,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-11-23 01:55:41,870 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615979381443299 [2024-11-23 01:55:41,870 INFO L175 Difference]: Start difference. First operand has 97 places, 110 transitions, 415 flow. Second operand 4 states and 239 transitions. [2024-11-23 01:55:41,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 109 transitions, 549 flow [2024-11-23 01:55:41,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 109 transitions, 543 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:55:41,874 INFO L231 Difference]: Finished difference. Result has 99 places, 109 transitions, 411 flow [2024-11-23 01:55:41,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=411, PETRI_PLACES=99, PETRI_TRANSITIONS=109} [2024-11-23 01:55:41,874 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2024-11-23 01:55:41,875 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 109 transitions, 411 flow [2024-11-23 01:55:41,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2024-11-23 01:55:41,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:41,875 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:41,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 01:55:41,876 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:41,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:41,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1291312033, now seen corresponding path program 1 times [2024-11-23 01:55:41,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:41,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333099762] [2024-11-23 01:55:41,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:41,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:41,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 01:55:41,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:41,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333099762] [2024-11-23 01:55:41,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333099762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:41,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:41,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:55:41,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430725950] [2024-11-23 01:55:41,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:41,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:41,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:41,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:41,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:55:41,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-23 01:55:41,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 109 transitions, 411 flow. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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) [2024-11-23 01:55:41,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:41,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-23 01:55:41,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:42,121 INFO L124 PetriNetUnfolderBase]: 293/759 cut-off events. [2024-11-23 01:55:42,121 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-11-23 01:55:42,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 759 events. 293/759 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4413 event pairs, 176 based on Foata normal form. 1/608 useless extension candidates. Maximal degree in co-relation 1328. Up to 473 conditions per place. [2024-11-23 01:55:42,126 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 65 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2024-11-23 01:55:42,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 108 transitions, 543 flow [2024-11-23 01:55:42,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:42,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:42,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-11-23 01:55:42,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615979381443299 [2024-11-23 01:55:42,128 INFO L175 Difference]: Start difference. First operand has 99 places, 109 transitions, 411 flow. Second operand 4 states and 239 transitions. [2024-11-23 01:55:42,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 108 transitions, 543 flow [2024-11-23 01:55:42,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 108 transitions, 539 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:55:42,131 INFO L231 Difference]: Finished difference. Result has 100 places, 108 transitions, 409 flow [2024-11-23 01:55:42,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=409, PETRI_PLACES=100, PETRI_TRANSITIONS=108} [2024-11-23 01:55:42,132 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 9 predicate places. [2024-11-23 01:55:42,132 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 108 transitions, 409 flow [2024-11-23 01:55:42,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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) [2024-11-23 01:55:42,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:42,132 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2024-11-23 01:55:42,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 01:55:42,132 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:42,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:42,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1137609242, now seen corresponding path program 2 times [2024-11-23 01:55:42,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:42,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437196455] [2024-11-23 01:55:42,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:55:42,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:42,147 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:55:42,148 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:55:42,206 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 01:55:42,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:42,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437196455] [2024-11-23 01:55:42,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437196455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:42,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934612449] [2024-11-23 01:55:42,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:55:42,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:42,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:42,212 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) [2024-11-23 01:55:42,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 01:55:42,279 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:55:42,279 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:55:42,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 01:55:42,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 01:55:42,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:55:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 01:55:42,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934612449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:55:42,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:55:42,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-11-23 01:55:42,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236455677] [2024-11-23 01:55:42,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:55:42,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:55:42,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:42,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:55:42,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:55:42,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 97 [2024-11-23 01:55:42,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 108 transitions, 409 flow. Second operand has 5 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 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) [2024-11-23 01:55:42,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:42,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 97 [2024-11-23 01:55:42,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:42,524 INFO L124 PetriNetUnfolderBase]: 293/757 cut-off events. [2024-11-23 01:55:42,524 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-23 01:55:42,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1336 conditions, 757 events. 293/757 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4402 event pairs, 176 based on Foata normal form. 2/607 useless extension candidates. Maximal degree in co-relation 1319. Up to 453 conditions per place. [2024-11-23 01:55:42,528 INFO L140 encePairwiseOnDemand]: 86/97 looper letters, 37 selfloop transitions, 31 changer transitions 0/106 dead transitions. [2024-11-23 01:55:42,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 106 transitions, 525 flow [2024-11-23 01:55:42,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:55:42,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:55:42,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 267 transitions. [2024-11-23 01:55:42,529 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5505154639175258 [2024-11-23 01:55:42,529 INFO L175 Difference]: Start difference. First operand has 100 places, 108 transitions, 409 flow. Second operand 5 states and 267 transitions. [2024-11-23 01:55:42,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 106 transitions, 525 flow [2024-11-23 01:55:42,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 106 transitions, 501 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-23 01:55:42,532 INFO L231 Difference]: Finished difference. Result has 96 places, 106 transitions, 427 flow [2024-11-23 01:55:42,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=427, PETRI_PLACES=96, PETRI_TRANSITIONS=106} [2024-11-23 01:55:42,533 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2024-11-23 01:55:42,533 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 106 transitions, 427 flow [2024-11-23 01:55:42,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 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) [2024-11-23 01:55:42,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:42,534 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:42,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 01:55:42,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:42,738 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:42,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:42,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1149458727, now seen corresponding path program 1 times [2024-11-23 01:55:42,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:42,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627471580] [2024-11-23 01:55:42,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:42,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:55:42,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:42,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627471580] [2024-11-23 01:55:42,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627471580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:42,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791155424] [2024-11-23 01:55:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:42,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:42,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:42,824 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) [2024-11-23 01:55:42,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 01:55:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:42,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-23 01:55:42,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:43,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:55:43,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:55:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:55:43,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791155424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:55:43,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:55:43,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-23 01:55:43,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857884639] [2024-11-23 01:55:43,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:55:43,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 01:55:43,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:43,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 01:55:43,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-23 01:55:43,457 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 97 [2024-11-23 01:55:43,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 106 transitions, 427 flow. Second operand has 19 states, 19 states have (on average 42.8421052631579) internal successors, (814), 19 states have internal predecessors, (814), 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) [2024-11-23 01:55:43,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:43,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 97 [2024-11-23 01:55:43,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:43,974 INFO L124 PetriNetUnfolderBase]: 580/1484 cut-off events. [2024-11-23 01:55:43,974 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-11-23 01:55:43,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2599 conditions, 1484 events. 580/1484 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10367 event pairs, 352 based on Foata normal form. 3/1178 useless extension candidates. Maximal degree in co-relation 2586. Up to 453 conditions per place. [2024-11-23 01:55:43,982 INFO L140 encePairwiseOnDemand]: 81/97 looper letters, 74 selfloop transitions, 47 changer transitions 0/155 dead transitions. [2024-11-23 01:55:43,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 155 transitions, 879 flow [2024-11-23 01:55:43,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 01:55:43,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-23 01:55:43,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 835 transitions. [2024-11-23 01:55:43,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4782359679266896 [2024-11-23 01:55:43,985 INFO L175 Difference]: Start difference. First operand has 96 places, 106 transitions, 427 flow. Second operand 18 states and 835 transitions. [2024-11-23 01:55:43,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 155 transitions, 879 flow [2024-11-23 01:55:43,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 155 transitions, 787 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 01:55:43,989 INFO L231 Difference]: Finished difference. Result has 109 places, 126 transitions, 621 flow [2024-11-23 01:55:43,989 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=621, PETRI_PLACES=109, PETRI_TRANSITIONS=126} [2024-11-23 01:55:43,990 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 18 predicate places. [2024-11-23 01:55:43,990 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 126 transitions, 621 flow [2024-11-23 01:55:43,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 42.8421052631579) internal successors, (814), 19 states have internal predecessors, (814), 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) [2024-11-23 01:55:43,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:43,991 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:44,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 01:55:44,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:44,195 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:44,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:44,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1216054083, now seen corresponding path program 1 times [2024-11-23 01:55:44,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:44,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638281108] [2024-11-23 01:55:44,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:44,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 01:55:44,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:44,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638281108] [2024-11-23 01:55:44,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638281108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:44,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280258577] [2024-11-23 01:55:44,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:44,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:44,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:44,291 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) [2024-11-23 01:55:44,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 01:55:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:44,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:55:44,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:44,403 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 01:55:44,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:55:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 01:55:44,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280258577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:55:44,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:55:44,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 01:55:44,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048028822] [2024-11-23 01:55:44,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:55:44,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 01:55:44,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:44,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 01:55:44,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 01:55:44,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-23 01:55:44,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 126 transitions, 621 flow. Second operand has 12 states, 12 states have (on average 50.833333333333336) internal successors, (610), 12 states have internal predecessors, (610), 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) [2024-11-23 01:55:44,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:44,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-23 01:55:44,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:44,760 INFO L124 PetriNetUnfolderBase]: 589/1520 cut-off events. [2024-11-23 01:55:44,760 INFO L125 PetriNetUnfolderBase]: For 222/222 co-relation queries the response was YES. [2024-11-23 01:55:44,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2747 conditions, 1520 events. 589/1520 cut-off events. For 222/222 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10763 event pairs, 352 based on Foata normal form. 9/1229 useless extension candidates. Maximal degree in co-relation 2734. Up to 936 conditions per place. [2024-11-23 01:55:44,769 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 75 selfloop transitions, 44 changer transitions 0/153 dead transitions. [2024-11-23 01:55:44,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 153 transitions, 1027 flow [2024-11-23 01:55:44,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 01:55:44,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 01:55:44,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 562 transitions. [2024-11-23 01:55:44,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5793814432989691 [2024-11-23 01:55:44,771 INFO L175 Difference]: Start difference. First operand has 109 places, 126 transitions, 621 flow. Second operand 10 states and 562 transitions. [2024-11-23 01:55:44,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 153 transitions, 1027 flow [2024-11-23 01:55:44,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 153 transitions, 943 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-11-23 01:55:44,776 INFO L231 Difference]: Finished difference. Result has 117 places, 153 transitions, 841 flow [2024-11-23 01:55:44,777 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=841, PETRI_PLACES=117, PETRI_TRANSITIONS=153} [2024-11-23 01:55:44,777 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 26 predicate places. [2024-11-23 01:55:44,778 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 153 transitions, 841 flow [2024-11-23 01:55:44,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.833333333333336) internal successors, (610), 12 states have internal predecessors, (610), 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) [2024-11-23 01:55:44,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:44,778 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] [2024-11-23 01:55:44,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 01:55:44,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 01:55:44,979 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:44,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:44,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2146986915, now seen corresponding path program 1 times [2024-11-23 01:55:44,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:44,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615563411] [2024-11-23 01:55:44,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:44,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:55:45,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:45,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615563411] [2024-11-23 01:55:45,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615563411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:45,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:45,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:55:45,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824664770] [2024-11-23 01:55:45,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:45,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:45,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:45,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:45,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:55:45,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-23 01:55:45,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 153 transitions, 841 flow. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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) [2024-11-23 01:55:45,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:45,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-23 01:55:45,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:45,407 INFO L124 PetriNetUnfolderBase]: 1107/2530 cut-off events. [2024-11-23 01:55:45,408 INFO L125 PetriNetUnfolderBase]: For 253/253 co-relation queries the response was YES. [2024-11-23 01:55:45,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4612 conditions, 2530 events. 1107/2530 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 18910 event pairs, 322 based on Foata normal form. 80/2123 useless extension candidates. Maximal degree in co-relation 4596. Up to 898 conditions per place. [2024-11-23 01:55:45,425 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 145 selfloop transitions, 5 changer transitions 0/180 dead transitions. [2024-11-23 01:55:45,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 180 transitions, 1197 flow [2024-11-23 01:55:45,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:45,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 264 transitions. [2024-11-23 01:55:45,427 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6804123711340206 [2024-11-23 01:55:45,427 INFO L175 Difference]: Start difference. First operand has 117 places, 153 transitions, 841 flow. Second operand 4 states and 264 transitions. [2024-11-23 01:55:45,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 180 transitions, 1197 flow [2024-11-23 01:55:45,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 180 transitions, 1159 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-23 01:55:45,432 INFO L231 Difference]: Finished difference. Result has 120 places, 155 transitions, 837 flow [2024-11-23 01:55:45,432 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=837, PETRI_PLACES=120, PETRI_TRANSITIONS=155} [2024-11-23 01:55:45,432 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 29 predicate places. [2024-11-23 01:55:45,433 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 155 transitions, 837 flow [2024-11-23 01:55:45,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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) [2024-11-23 01:55:45,433 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:45,433 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] [2024-11-23 01:55:45,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 01:55:45,434 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:45,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:45,434 INFO L85 PathProgramCache]: Analyzing trace with hash 2132086032, now seen corresponding path program 1 times [2024-11-23 01:55:45,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:45,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852122927] [2024-11-23 01:55:45,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:45,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:45,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:55:45,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:45,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852122927] [2024-11-23 01:55:45,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852122927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:45,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761105895] [2024-11-23 01:55:45,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:45,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:45,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:45,657 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) [2024-11-23 01:55:45,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 01:55:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:45,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:55:45,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:55:45,785 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:45,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761105895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:45,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:45,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-23 01:55:45,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477335114] [2024-11-23 01:55:45,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:45,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:45,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:45,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:45,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 01:55:45,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-23 01:55:45,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 155 transitions, 837 flow. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2024-11-23 01:55:45,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:45,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-23 01:55:45,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:46,068 INFO L124 PetriNetUnfolderBase]: 727/1958 cut-off events. [2024-11-23 01:55:46,068 INFO L125 PetriNetUnfolderBase]: For 622/670 co-relation queries the response was YES. [2024-11-23 01:55:46,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3776 conditions, 1958 events. 727/1958 cut-off events. For 622/670 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15079 event pairs, 456 based on Foata normal form. 28/1645 useless extension candidates. Maximal degree in co-relation 3757. Up to 1173 conditions per place. [2024-11-23 01:55:46,082 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 112 selfloop transitions, 5 changer transitions 0/153 dead transitions. [2024-11-23 01:55:46,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 153 transitions, 1060 flow [2024-11-23 01:55:46,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:46,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:46,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-11-23 01:55:46,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615979381443299 [2024-11-23 01:55:46,084 INFO L175 Difference]: Start difference. First operand has 120 places, 155 transitions, 837 flow. Second operand 4 states and 239 transitions. [2024-11-23 01:55:46,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 153 transitions, 1060 flow [2024-11-23 01:55:46,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 153 transitions, 1060 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:55:46,090 INFO L231 Difference]: Finished difference. Result has 123 places, 153 transitions, 836 flow [2024-11-23 01:55:46,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=836, PETRI_PLACES=123, PETRI_TRANSITIONS=153} [2024-11-23 01:55:46,090 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 32 predicate places. [2024-11-23 01:55:46,090 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 153 transitions, 836 flow [2024-11-23 01:55:46,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2024-11-23 01:55:46,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:46,091 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] [2024-11-23 01:55:46,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 01:55:46,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-23 01:55:46,292 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:46,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:46,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1807055625, now seen corresponding path program 1 times [2024-11-23 01:55:46,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:46,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940820311] [2024-11-23 01:55:46,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:46,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:46,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 01:55:46,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:46,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940820311] [2024-11-23 01:55:46,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940820311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:46,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:46,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:55:46,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171341205] [2024-11-23 01:55:46,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:46,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:46,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:46,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:46,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:55:46,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-23 01:55:46,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 153 transitions, 836 flow. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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) [2024-11-23 01:55:46,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:46,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-23 01:55:46,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:46,661 INFO L124 PetriNetUnfolderBase]: 725/1956 cut-off events. [2024-11-23 01:55:46,661 INFO L125 PetriNetUnfolderBase]: For 632/680 co-relation queries the response was YES. [2024-11-23 01:55:46,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3774 conditions, 1956 events. 725/1956 cut-off events. For 632/680 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 14945 event pairs, 456 based on Foata normal form. 28/1643 useless extension candidates. Maximal degree in co-relation 3753. Up to 1171 conditions per place. [2024-11-23 01:55:46,675 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 110 selfloop transitions, 5 changer transitions 0/151 dead transitions. [2024-11-23 01:55:46,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 151 transitions, 1055 flow [2024-11-23 01:55:46,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:46,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:46,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-11-23 01:55:46,678 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615979381443299 [2024-11-23 01:55:46,678 INFO L175 Difference]: Start difference. First operand has 123 places, 153 transitions, 836 flow. Second operand 4 states and 239 transitions. [2024-11-23 01:55:46,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 151 transitions, 1055 flow [2024-11-23 01:55:46,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 151 transitions, 1049 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:55:46,682 INFO L231 Difference]: Finished difference. Result has 124 places, 151 transitions, 829 flow [2024-11-23 01:55:46,683 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=829, PETRI_PLACES=124, PETRI_TRANSITIONS=151} [2024-11-23 01:55:46,684 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 33 predicate places. [2024-11-23 01:55:46,684 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 151 transitions, 829 flow [2024-11-23 01:55:46,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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) [2024-11-23 01:55:46,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:46,685 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] [2024-11-23 01:55:46,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 01:55:46,685 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:46,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:46,686 INFO L85 PathProgramCache]: Analyzing trace with hash -719985607, now seen corresponding path program 1 times [2024-11-23 01:55:46,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:46,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032405228] [2024-11-23 01:55:46,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:46,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:47,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 01:55:47,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:47,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032405228] [2024-11-23 01:55:47,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032405228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:47,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956631342] [2024-11-23 01:55:47,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:47,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:47,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:47,213 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) [2024-11-23 01:55:47,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 01:55:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:47,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-23 01:55:47,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:47,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 01:55:47,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-23 01:55:47,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 01:55:47,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:55:47,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-23 01:55:47,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-23 01:55:47,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 01:55:47,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956631342] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:55:47,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:55:47,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-11-23 01:55:47,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828494976] [2024-11-23 01:55:47,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:55:47,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 01:55:47,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:47,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 01:55:47,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-23 01:55:47,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 97 [2024-11-23 01:55:47,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 151 transitions, 829 flow. Second operand has 17 states, 17 states have (on average 45.05882352941177) internal successors, (766), 17 states have internal predecessors, (766), 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) [2024-11-23 01:55:47,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:47,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 97 [2024-11-23 01:55:47,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:49,229 INFO L124 PetriNetUnfolderBase]: 2711/6818 cut-off events. [2024-11-23 01:55:49,229 INFO L125 PetriNetUnfolderBase]: For 1918/1962 co-relation queries the response was YES. [2024-11-23 01:55:49,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13238 conditions, 6818 events. 2711/6818 cut-off events. For 1918/1962 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 63550 event pairs, 730 based on Foata normal form. 44/5905 useless extension candidates. Maximal degree in co-relation 13217. Up to 876 conditions per place. [2024-11-23 01:55:49,280 INFO L140 encePairwiseOnDemand]: 84/97 looper letters, 286 selfloop transitions, 46 changer transitions 0/366 dead transitions. [2024-11-23 01:55:49,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 366 transitions, 2446 flow [2024-11-23 01:55:49,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 01:55:49,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-23 01:55:49,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 812 transitions. [2024-11-23 01:55:49,283 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5580756013745705 [2024-11-23 01:55:49,283 INFO L175 Difference]: Start difference. First operand has 124 places, 151 transitions, 829 flow. Second operand 15 states and 812 transitions. [2024-11-23 01:55:49,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 366 transitions, 2446 flow [2024-11-23 01:55:49,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 366 transitions, 2432 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:55:49,300 INFO L231 Difference]: Finished difference. Result has 139 places, 164 transitions, 1022 flow [2024-11-23 01:55:49,301 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1022, PETRI_PLACES=139, PETRI_TRANSITIONS=164} [2024-11-23 01:55:49,301 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 48 predicate places. [2024-11-23 01:55:49,301 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 164 transitions, 1022 flow [2024-11-23 01:55:49,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 45.05882352941177) internal successors, (766), 17 states have internal predecessors, (766), 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) [2024-11-23 01:55:49,302 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:49,302 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] [2024-11-23 01:55:49,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 01:55:49,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:49,503 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:49,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:49,503 INFO L85 PathProgramCache]: Analyzing trace with hash -844748002, now seen corresponding path program 1 times [2024-11-23 01:55:49,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:49,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406377190] [2024-11-23 01:55:49,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:49,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 01:55:49,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:49,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406377190] [2024-11-23 01:55:49,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406377190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:49,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59957987] [2024-11-23 01:55:49,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:49,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:49,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:49,997 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) [2024-11-23 01:55:49,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 01:55:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:50,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 01:55:50,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:50,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-23 01:55:50,435 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 01:55:50,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-23 01:55:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 01:55:50,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:55:50,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-23 01:55:50,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-23 01:55:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 01:55:50,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59957987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:55:50,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:55:50,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-11-23 01:55:50,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318729063] [2024-11-23 01:55:50,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:55:50,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 01:55:50,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:50,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 01:55:50,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-23 01:55:50,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 97 [2024-11-23 01:55:50,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 164 transitions, 1022 flow. Second operand has 17 states, 17 states have (on average 43.1764705882353) internal successors, (734), 17 states have internal predecessors, (734), 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) [2024-11-23 01:55:50,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:50,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 97 [2024-11-23 01:55:50,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:52,119 INFO L124 PetriNetUnfolderBase]: 3243/7370 cut-off events. [2024-11-23 01:55:52,119 INFO L125 PetriNetUnfolderBase]: For 4215/4259 co-relation queries the response was YES. [2024-11-23 01:55:52,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15836 conditions, 7370 events. 3243/7370 cut-off events. For 4215/4259 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 65063 event pairs, 912 based on Foata normal form. 124/6533 useless extension candidates. Maximal degree in co-relation 15812. Up to 1166 conditions per place. [2024-11-23 01:55:52,169 INFO L140 encePairwiseOnDemand]: 84/97 looper letters, 291 selfloop transitions, 46 changer transitions 0/368 dead transitions. [2024-11-23 01:55:52,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 368 transitions, 2592 flow [2024-11-23 01:55:52,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 01:55:52,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-23 01:55:52,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 781 transitions. [2024-11-23 01:55:52,172 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5367697594501718 [2024-11-23 01:55:52,172 INFO L175 Difference]: Start difference. First operand has 139 places, 164 transitions, 1022 flow. Second operand 15 states and 781 transitions. [2024-11-23 01:55:52,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 368 transitions, 2592 flow [2024-11-23 01:55:52,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 368 transitions, 2573 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-23 01:55:52,205 INFO L231 Difference]: Finished difference. Result has 150 places, 167 transitions, 1135 flow [2024-11-23 01:55:52,207 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1135, PETRI_PLACES=150, PETRI_TRANSITIONS=167} [2024-11-23 01:55:52,208 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 59 predicate places. [2024-11-23 01:55:52,208 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 167 transitions, 1135 flow [2024-11-23 01:55:52,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 43.1764705882353) internal successors, (734), 17 states have internal predecessors, (734), 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) [2024-11-23 01:55:52,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:52,210 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] [2024-11-23 01:55:52,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 01:55:52,414 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,SelfDestructingSolverStorable17 [2024-11-23 01:55:52,415 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:52,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:52,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1688695304, now seen corresponding path program 1 times [2024-11-23 01:55:52,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:52,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778009335] [2024-11-23 01:55:52,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:52,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:52,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 01:55:52,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:52,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778009335] [2024-11-23 01:55:52,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778009335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:52,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:52,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:55:52,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522488309] [2024-11-23 01:55:52,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:52,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:52,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:52,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:52,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:55:52,542 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-23 01:55:52,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 167 transitions, 1135 flow. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2024-11-23 01:55:52,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:52,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-23 01:55:52,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:53,530 INFO L124 PetriNetUnfolderBase]: 4403/10010 cut-off events. [2024-11-23 01:55:53,530 INFO L125 PetriNetUnfolderBase]: For 8813/8971 co-relation queries the response was YES. [2024-11-23 01:55:53,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22497 conditions, 10010 events. 4403/10010 cut-off events. For 8813/8971 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 94151 event pairs, 1508 based on Foata normal form. 426/8935 useless extension candidates. Maximal degree in co-relation 22471. Up to 3692 conditions per place. [2024-11-23 01:55:53,595 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 178 selfloop transitions, 5 changer transitions 0/218 dead transitions. [2024-11-23 01:55:53,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 218 transitions, 1809 flow [2024-11-23 01:55:53,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:53,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:53,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2024-11-23 01:55:53,598 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6752577319587629 [2024-11-23 01:55:53,598 INFO L175 Difference]: Start difference. First operand has 150 places, 167 transitions, 1135 flow. Second operand 4 states and 262 transitions. [2024-11-23 01:55:53,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 218 transitions, 1809 flow [2024-11-23 01:55:53,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 218 transitions, 1721 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-11-23 01:55:53,619 INFO L231 Difference]: Finished difference. Result has 145 places, 169 transitions, 1109 flow [2024-11-23 01:55:53,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1109, PETRI_PLACES=145, PETRI_TRANSITIONS=169} [2024-11-23 01:55:53,620 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 54 predicate places. [2024-11-23 01:55:53,620 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 169 transitions, 1109 flow [2024-11-23 01:55:53,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2024-11-23 01:55:53,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:53,621 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:53,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 01:55:53,621 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:53,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:53,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1493829074, now seen corresponding path program 2 times [2024-11-23 01:55:53,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:53,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722247436] [2024-11-23 01:55:53,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:55:53,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:53,641 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:55:53,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:55:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 01:55:53,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:53,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722247436] [2024-11-23 01:55:53,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722247436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:53,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339038850] [2024-11-23 01:55:53,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:55:53,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:53,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:53,709 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) [2024-11-23 01:55:53,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 01:55:53,809 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:55:53,809 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:55:53,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 01:55:53,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:53,838 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 01:55:53,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:55:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 01:55:53,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339038850] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:55:53,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:55:53,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-11-23 01:55:53,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403697603] [2024-11-23 01:55:53,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:55:53,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:55:53,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:53,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:55:53,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:55:53,885 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 97 [2024-11-23 01:55:53,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 169 transitions, 1109 flow. Second operand has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 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) [2024-11-23 01:55:53,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:53,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 97 [2024-11-23 01:55:53,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:54,744 INFO L124 PetriNetUnfolderBase]: 3129/8529 cut-off events. [2024-11-23 01:55:54,744 INFO L125 PetriNetUnfolderBase]: For 7183/7391 co-relation queries the response was YES. [2024-11-23 01:55:54,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19077 conditions, 8529 events. 3129/8529 cut-off events. For 7183/7391 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 87054 event pairs, 2120 based on Foata normal form. 149/7697 useless extension candidates. Maximal degree in co-relation 19051. Up to 4741 conditions per place. [2024-11-23 01:55:54,799 INFO L140 encePairwiseOnDemand]: 86/97 looper letters, 78 selfloop transitions, 50 changer transitions 0/167 dead transitions. [2024-11-23 01:55:54,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 167 transitions, 1345 flow [2024-11-23 01:55:54,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:55:54,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:55:54,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 267 transitions. [2024-11-23 01:55:54,801 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5505154639175258 [2024-11-23 01:55:54,801 INFO L175 Difference]: Start difference. First operand has 145 places, 169 transitions, 1109 flow. Second operand 5 states and 267 transitions. [2024-11-23 01:55:54,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 167 transitions, 1345 flow [2024-11-23 01:55:54,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 167 transitions, 1313 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-23 01:55:54,831 INFO L231 Difference]: Finished difference. Result has 143 places, 167 transitions, 1157 flow [2024-11-23 01:55:54,832 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1157, PETRI_PLACES=143, PETRI_TRANSITIONS=167} [2024-11-23 01:55:54,832 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 52 predicate places. [2024-11-23 01:55:54,832 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 167 transitions, 1157 flow [2024-11-23 01:55:54,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 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) [2024-11-23 01:55:54,833 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:54,833 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] [2024-11-23 01:55:54,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 01:55:55,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:55,039 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:55:55,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:55,040 INFO L85 PathProgramCache]: Analyzing trace with hash -417384197, now seen corresponding path program 1 times [2024-11-23 01:55:55,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:55,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835411154] [2024-11-23 01:55:55,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:55,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:55:55,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:55,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835411154] [2024-11-23 01:55:55,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835411154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:55,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964566675] [2024-11-23 01:55:55,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:55,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:55,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:55,831 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) [2024-11-23 01:55:55,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 01:55:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:55,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-23 01:55:55,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:55,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 01:55:56,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-23 01:55:56,198 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-23 01:55:56,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-23 01:55:56,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-23 01:55:56,505 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 01:55:56,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-23 01:55:56,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:55:56,557 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:55:56,629 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_358 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_358) c_~get_2~0.base) (+ (* c_~id_0~0 4) c_~get_2~0.offset))))) is different from false [2024-11-23 01:55:56,779 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:55:56,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2024-11-23 01:55:56,790 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:55:56,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 39 [2024-11-23 01:55:56,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2024-11-23 01:55:56,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2024-11-23 01:55:56,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964566675] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:55:56,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:55:56,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-23 01:55:56,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120658855] [2024-11-23 01:55:56,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:55:56,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-23 01:55:56,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:56,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-23 01:55:56,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=464, Unknown=1, NotChecked=44, Total=600 [2024-11-23 01:55:56,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 97 [2024-11-23 01:55:56,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 167 transitions, 1157 flow. Second operand has 25 states, 25 states have (on average 33.04) internal successors, (826), 25 states have internal predecessors, (826), 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) [2024-11-23 01:55:56,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:56,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 97 [2024-11-23 01:55:56,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:01,489 INFO L124 PetriNetUnfolderBase]: 9099/17287 cut-off events. [2024-11-23 01:56:01,490 INFO L125 PetriNetUnfolderBase]: For 11740/12409 co-relation queries the response was YES. [2024-11-23 01:56:01,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43039 conditions, 17287 events. 9099/17287 cut-off events. For 11740/12409 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 150797 event pairs, 1928 based on Foata normal form. 507/16788 useless extension candidates. Maximal degree in co-relation 43015. Up to 2804 conditions per place. [2024-11-23 01:56:01,584 INFO L140 encePairwiseOnDemand]: 79/97 looper letters, 396 selfloop transitions, 91 changer transitions 0/506 dead transitions. [2024-11-23 01:56:01,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 506 transitions, 3665 flow [2024-11-23 01:56:01,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-23 01:56:01,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-23 01:56:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1199 transitions. [2024-11-23 01:56:01,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4262353359402773 [2024-11-23 01:56:01,587 INFO L175 Difference]: Start difference. First operand has 143 places, 167 transitions, 1157 flow. Second operand 29 states and 1199 transitions. [2024-11-23 01:56:01,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 506 transitions, 3665 flow [2024-11-23 01:56:01,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 506 transitions, 3505 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 01:56:01,648 INFO L231 Difference]: Finished difference. Result has 175 places, 217 transitions, 1754 flow [2024-11-23 01:56:01,648 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1754, PETRI_PLACES=175, PETRI_TRANSITIONS=217} [2024-11-23 01:56:01,648 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 84 predicate places. [2024-11-23 01:56:01,648 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 217 transitions, 1754 flow [2024-11-23 01:56:01,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 33.04) internal successors, (826), 25 states have internal predecessors, (826), 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) [2024-11-23 01:56:01,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:01,649 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] [2024-11-23 01:56:01,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 01:56:01,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-23 01:56:01,854 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:56:01,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:01,854 INFO L85 PathProgramCache]: Analyzing trace with hash 809948001, now seen corresponding path program 1 times [2024-11-23 01:56:01,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:01,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809196097] [2024-11-23 01:56:01,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:01,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:02,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:56:02,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:02,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809196097] [2024-11-23 01:56:02,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809196097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:02,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970835027] [2024-11-23 01:56:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:02,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:02,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:02,464 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) [2024-11-23 01:56:02,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 01:56:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:02,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-23 01:56:02,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:02,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 01:56:02,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-23 01:56:02,792 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-23 01:56:02,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-23 01:56:02,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-23 01:56:03,031 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 01:56:03,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-23 01:56:03,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:56:03,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:56:03,295 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:56:03,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-23 01:56:03,303 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:56:03,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2024-11-23 01:56:03,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-23 01:56:03,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:56:03,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970835027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:56:03,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:56:03,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-23 01:56:03,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296397392] [2024-11-23 01:56:03,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:56:03,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-23 01:56:03,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:03,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-23 01:56:03,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=424, Unknown=5, NotChecked=0, Total=506 [2024-11-23 01:56:03,703 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 97 [2024-11-23 01:56:03,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 217 transitions, 1754 flow. Second operand has 23 states, 23 states have (on average 35.391304347826086) internal successors, (814), 23 states have internal predecessors, (814), 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) [2024-11-23 01:56:03,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:03,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 97 [2024-11-23 01:56:03,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:05,772 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_0~0 4) c_~get_2~0.offset))) (and (<= 0 c_~id_0~0) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_131| Int)) (or (forall ((v_ArrVal_393 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_131| v_ArrVal_393) c_~get_2~0.base) .cse0) 9223372039002259456)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_131|) 0)))) (forall ((v_ArrVal_393 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_393) c_~get_2~0.base) .cse0) 9223372039002259456)))) is different from false [2024-11-23 01:56:08,468 INFO L124 PetriNetUnfolderBase]: 9901/18866 cut-off events. [2024-11-23 01:56:08,468 INFO L125 PetriNetUnfolderBase]: For 34994/35507 co-relation queries the response was YES. [2024-11-23 01:56:08,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53123 conditions, 18866 events. 9901/18866 cut-off events. For 34994/35507 co-relation queries the response was YES. Maximal size of possible extension queue 865. Compared 166158 event pairs, 2220 based on Foata normal form. 170/17707 useless extension candidates. Maximal degree in co-relation 53091. Up to 3427 conditions per place. [2024-11-23 01:56:08,604 INFO L140 encePairwiseOnDemand]: 82/97 looper letters, 365 selfloop transitions, 61 changer transitions 0/456 dead transitions. [2024-11-23 01:56:08,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 456 transitions, 3981 flow [2024-11-23 01:56:08,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 01:56:08,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-23 01:56:08,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 936 transitions. [2024-11-23 01:56:08,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4386129334582943 [2024-11-23 01:56:08,607 INFO L175 Difference]: Start difference. First operand has 175 places, 217 transitions, 1754 flow. Second operand 22 states and 936 transitions. [2024-11-23 01:56:08,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 456 transitions, 3981 flow [2024-11-23 01:56:08,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 456 transitions, 3859 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-11-23 01:56:08,735 INFO L231 Difference]: Finished difference. Result has 191 places, 230 transitions, 1887 flow [2024-11-23 01:56:08,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1887, PETRI_PLACES=191, PETRI_TRANSITIONS=230} [2024-11-23 01:56:08,736 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 100 predicate places. [2024-11-23 01:56:08,736 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 230 transitions, 1887 flow [2024-11-23 01:56:08,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 35.391304347826086) internal successors, (814), 23 states have internal predecessors, (814), 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) [2024-11-23 01:56:08,737 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:08,737 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, 1] [2024-11-23 01:56:08,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 01:56:08,941 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,SelfDestructingSolverStorable21 [2024-11-23 01:56:08,941 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:56:08,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:08,942 INFO L85 PathProgramCache]: Analyzing trace with hash -54007103, now seen corresponding path program 1 times [2024-11-23 01:56:08,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:08,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18294532] [2024-11-23 01:56:08,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:08,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:56:09,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:09,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18294532] [2024-11-23 01:56:09,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18294532] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:09,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707679977] [2024-11-23 01:56:09,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:09,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:09,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:09,550 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) [2024-11-23 01:56:09,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 01:56:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:09,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-23 01:56:09,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:09,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 01:56:09,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 01:56:09,829 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-23 01:56:09,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-23 01:56:09,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-23 01:56:09,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-23 01:56:09,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:56:09,960 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:56:10,150 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:56:10,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-23 01:56:10,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:56:10,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2024-11-23 01:56:10,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-23 01:56:10,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:56:10,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707679977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:56:10,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:56:10,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-23 01:56:10,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755639503] [2024-11-23 01:56:10,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:56:10,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-23 01:56:10,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:10,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-23 01:56:10,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=424, Unknown=6, NotChecked=0, Total=506 [2024-11-23 01:56:10,775 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 97 [2024-11-23 01:56:10,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 230 transitions, 1887 flow. Second operand has 23 states, 23 states have (on average 32.65217391304348) internal successors, (751), 23 states have internal predecessors, (751), 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) [2024-11-23 01:56:10,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:10,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 97 [2024-11-23 01:56:10,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:11,353 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_0~0 4) c_~get_2~0.offset))) (and (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_134| Int)) (or (forall ((v_ArrVal_429 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_134| v_ArrVal_429) c_~get_2~0.base) .cse0) 2147483648)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_134|) 0)))) (<= 0 c_~id_0~0) (forall ((v_ArrVal_429 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_429) c_~get_2~0.base) .cse0) 2147483648)))) is different from false [2024-11-23 01:56:13,974 INFO L124 PetriNetUnfolderBase]: 10012/18660 cut-off events. [2024-11-23 01:56:13,974 INFO L125 PetriNetUnfolderBase]: For 25727/26648 co-relation queries the response was YES. [2024-11-23 01:56:14,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54423 conditions, 18660 events. 10012/18660 cut-off events. For 25727/26648 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 160741 event pairs, 2556 based on Foata normal form. 946/18568 useless extension candidates. Maximal degree in co-relation 54389. Up to 3883 conditions per place. [2024-11-23 01:56:14,081 INFO L140 encePairwiseOnDemand]: 77/97 looper letters, 402 selfloop transitions, 101 changer transitions 18/545 dead transitions. [2024-11-23 01:56:14,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 545 transitions, 4339 flow [2024-11-23 01:56:14,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-23 01:56:14,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-23 01:56:14,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1274 transitions. [2024-11-23 01:56:14,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.423678084469571 [2024-11-23 01:56:14,084 INFO L175 Difference]: Start difference. First operand has 191 places, 230 transitions, 1887 flow. Second operand 31 states and 1274 transitions. [2024-11-23 01:56:14,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 545 transitions, 4339 flow [2024-11-23 01:56:14,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 545 transitions, 4265 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-11-23 01:56:14,239 INFO L231 Difference]: Finished difference. Result has 215 places, 256 transitions, 2259 flow [2024-11-23 01:56:14,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1829, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2259, PETRI_PLACES=215, PETRI_TRANSITIONS=256} [2024-11-23 01:56:14,240 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 124 predicate places. [2024-11-23 01:56:14,240 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 256 transitions, 2259 flow [2024-11-23 01:56:14,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 32.65217391304348) internal successors, (751), 23 states have internal predecessors, (751), 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) [2024-11-23 01:56:14,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:14,241 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, 1] [2024-11-23 01:56:14,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-23 01:56:14,441 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,SelfDestructingSolverStorable22 [2024-11-23 01:56:14,442 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:56:14,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:14,442 INFO L85 PathProgramCache]: Analyzing trace with hash -661446388, now seen corresponding path program 1 times [2024-11-23 01:56:14,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:14,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808915871] [2024-11-23 01:56:14,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:14,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:56:14,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:14,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808915871] [2024-11-23 01:56:14,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808915871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:14,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653210872] [2024-11-23 01:56:14,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:14,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:14,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:14,977 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) [2024-11-23 01:56:14,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 01:56:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:15,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-23 01:56:15,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:15,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 01:56:15,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-23 01:56:15,281 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-23 01:56:15,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-23 01:56:15,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-23 01:56:15,484 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 01:56:15,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-23 01:56:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:56:15,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:56:15,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:56:15,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2024-11-23 01:56:15,680 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:56:15,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 39 [2024-11-23 01:56:15,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2024-11-23 01:56:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:56:15,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653210872] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:56:15,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:56:15,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-23 01:56:15,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466964464] [2024-11-23 01:56:15,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:56:15,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-23 01:56:15,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:15,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-23 01:56:15,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=415, Unknown=5, NotChecked=0, Total=506 [2024-11-23 01:56:16,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 97 [2024-11-23 01:56:16,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 256 transitions, 2259 flow. Second operand has 23 states, 23 states have (on average 35.391304347826086) internal successors, (814), 23 states have internal predecessors, (814), 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) [2024-11-23 01:56:16,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:16,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 97 [2024-11-23 01:56:16,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:17,658 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_0~0 4) c_~get_2~0.offset))) (and (forall ((v_ArrVal_464 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_464) c_~get_2~0.base) .cse0) 4294967296))) (<= 0 c_~id_0~0) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_137| Int)) (or (forall ((v_ArrVal_464 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_137| v_ArrVal_464) c_~get_2~0.base) .cse0) 4294967296))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_137|) 0)))))) is different from false [2024-11-23 01:56:19,843 INFO L124 PetriNetUnfolderBase]: 9910/18809 cut-off events. [2024-11-23 01:56:19,844 INFO L125 PetriNetUnfolderBase]: For 53156/54589 co-relation queries the response was YES. [2024-11-23 01:56:19,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60747 conditions, 18809 events. 9910/18809 cut-off events. For 53156/54589 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 165715 event pairs, 2712 based on Foata normal form. 620/18251 useless extension candidates. Maximal degree in co-relation 60706. Up to 3983 conditions per place. [2024-11-23 01:56:20,059 INFO L140 encePairwiseOnDemand]: 82/97 looper letters, 370 selfloop transitions, 61 changer transitions 0/473 dead transitions. [2024-11-23 01:56:20,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 473 transitions, 4595 flow [2024-11-23 01:56:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 01:56:20,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-23 01:56:20,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 921 transitions. [2024-11-23 01:56:20,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43158388003748827 [2024-11-23 01:56:20,061 INFO L175 Difference]: Start difference. First operand has 215 places, 256 transitions, 2259 flow. Second operand 22 states and 921 transitions. [2024-11-23 01:56:20,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 473 transitions, 4595 flow [2024-11-23 01:56:20,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 473 transitions, 4434 flow, removed 12 selfloop flow, removed 15 redundant places. [2024-11-23 01:56:20,282 INFO L231 Difference]: Finished difference. Result has 222 places, 259 transitions, 2301 flow [2024-11-23 01:56:20,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2131, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2301, PETRI_PLACES=222, PETRI_TRANSITIONS=259} [2024-11-23 01:56:20,282 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 131 predicate places. [2024-11-23 01:56:20,283 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 259 transitions, 2301 flow [2024-11-23 01:56:20,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 35.391304347826086) internal successors, (814), 23 states have internal predecessors, (814), 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) [2024-11-23 01:56:20,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:20,283 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, 1, 1] [2024-11-23 01:56:20,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-23 01:56:20,484 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,SelfDestructingSolverStorable23 [2024-11-23 01:56:20,484 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:56:20,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:20,484 INFO L85 PathProgramCache]: Analyzing trace with hash -726901983, now seen corresponding path program 1 times [2024-11-23 01:56:20,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:20,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608065224] [2024-11-23 01:56:20,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:20,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 01:56:20,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:20,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608065224] [2024-11-23 01:56:20,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608065224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:20,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:20,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 01:56:20,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535316142] [2024-11-23 01:56:20,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:20,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:56:20,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:20,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:56:20,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:56:20,612 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 97 [2024-11-23 01:56:20,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 259 transitions, 2301 flow. Second operand has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 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) [2024-11-23 01:56:20,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:20,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 97 [2024-11-23 01:56:20,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:22,165 INFO L124 PetriNetUnfolderBase]: 7339/15173 cut-off events. [2024-11-23 01:56:22,166 INFO L125 PetriNetUnfolderBase]: For 34070/34384 co-relation queries the response was YES. [2024-11-23 01:56:22,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48080 conditions, 15173 events. 7339/15173 cut-off events. For 34070/34384 co-relation queries the response was YES. Maximal size of possible extension queue 757. Compared 139249 event pairs, 2779 based on Foata normal form. 388/14893 useless extension candidates. Maximal degree in co-relation 48037. Up to 6502 conditions per place. [2024-11-23 01:56:22,321 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 274 selfloop transitions, 38 changer transitions 10/356 dead transitions. [2024-11-23 01:56:22,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 356 transitions, 3511 flow [2024-11-23 01:56:22,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:56:22,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:56:22,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 371 transitions. [2024-11-23 01:56:22,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6374570446735395 [2024-11-23 01:56:22,323 INFO L175 Difference]: Start difference. First operand has 222 places, 259 transitions, 2301 flow. Second operand 6 states and 371 transitions. [2024-11-23 01:56:22,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 356 transitions, 3511 flow [2024-11-23 01:56:22,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 356 transitions, 3292 flow, removed 12 selfloop flow, removed 19 redundant places. [2024-11-23 01:56:22,566 INFO L231 Difference]: Finished difference. Result has 210 places, 256 transitions, 2214 flow [2024-11-23 01:56:22,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2214, PETRI_PLACES=210, PETRI_TRANSITIONS=256} [2024-11-23 01:56:22,566 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 119 predicate places. [2024-11-23 01:56:22,567 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 256 transitions, 2214 flow [2024-11-23 01:56:22,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 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) [2024-11-23 01:56:22,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:22,567 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, 1, 1] [2024-11-23 01:56:22,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 01:56:22,567 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:56:22,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:22,567 INFO L85 PathProgramCache]: Analyzing trace with hash 969999588, now seen corresponding path program 1 times [2024-11-23 01:56:22,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:22,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309620332] [2024-11-23 01:56:22,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:22,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 01:56:22,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:22,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309620332] [2024-11-23 01:56:22,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309620332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:22,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:22,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:56:22,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26936143] [2024-11-23 01:56:22,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:22,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:56:22,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:22,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:56:22,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:56:22,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-23 01:56:22,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 256 transitions, 2214 flow. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 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) [2024-11-23 01:56:22,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:22,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-23 01:56:22,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:24,063 INFO L124 PetriNetUnfolderBase]: 6324/14764 cut-off events. [2024-11-23 01:56:24,064 INFO L125 PetriNetUnfolderBase]: For 43048/43500 co-relation queries the response was YES. [2024-11-23 01:56:24,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45539 conditions, 14764 events. 6324/14764 cut-off events. For 43048/43500 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 148023 event pairs, 2502 based on Foata normal form. 367/14132 useless extension candidates. Maximal degree in co-relation 45498. Up to 5903 conditions per place. [2024-11-23 01:56:24,189 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 341 selfloop transitions, 11 changer transitions 0/396 dead transitions. [2024-11-23 01:56:24,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 396 transitions, 4240 flow [2024-11-23 01:56:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:56:24,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:56:24,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 259 transitions. [2024-11-23 01:56:24,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6675257731958762 [2024-11-23 01:56:24,190 INFO L175 Difference]: Start difference. First operand has 210 places, 256 transitions, 2214 flow. Second operand 4 states and 259 transitions. [2024-11-23 01:56:24,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 396 transitions, 4240 flow [2024-11-23 01:56:24,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 396 transitions, 4127 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-11-23 01:56:24,329 INFO L231 Difference]: Finished difference. Result has 210 places, 253 transitions, 2165 flow [2024-11-23 01:56:24,329 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2165, PETRI_PLACES=210, PETRI_TRANSITIONS=253} [2024-11-23 01:56:24,329 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 119 predicate places. [2024-11-23 01:56:24,329 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 253 transitions, 2165 flow [2024-11-23 01:56:24,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 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) [2024-11-23 01:56:24,330 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:24,330 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, 1, 1] [2024-11-23 01:56:24,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 01:56:24,330 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:56:24,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:24,331 INFO L85 PathProgramCache]: Analyzing trace with hash 969998563, now seen corresponding path program 1 times [2024-11-23 01:56:24,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:24,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388726312] [2024-11-23 01:56:24,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:24,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:24,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 01:56:24,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:24,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388726312] [2024-11-23 01:56:24,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388726312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:24,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794741117] [2024-11-23 01:56:24,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:24,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:24,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:24,708 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) [2024-11-23 01:56:24,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 01:56:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:24,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-23 01:56:24,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:24,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-23 01:56:25,108 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 01:56:25,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-23 01:56:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 01:56:25,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:56:25,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-23 01:56:25,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-23 01:56:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 01:56:25,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794741117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:56:25,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:56:25,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-23 01:56:25,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985444933] [2024-11-23 01:56:25,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:56:25,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 01:56:25,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:25,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 01:56:25,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-23 01:56:25,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 97 [2024-11-23 01:56:25,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 253 transitions, 2165 flow. Second operand has 19 states, 19 states have (on average 39.36842105263158) internal successors, (748), 19 states have internal predecessors, (748), 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) [2024-11-23 01:56:25,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:25,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 97 [2024-11-23 01:56:25,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:27,558 INFO L124 PetriNetUnfolderBase]: 8500/16312 cut-off events. [2024-11-23 01:56:27,558 INFO L125 PetriNetUnfolderBase]: For 49520/50406 co-relation queries the response was YES. [2024-11-23 01:56:27,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53405 conditions, 16312 events. 8500/16312 cut-off events. For 49520/50406 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 141695 event pairs, 2013 based on Foata normal form. 270/15954 useless extension candidates. Maximal degree in co-relation 53364. Up to 2664 conditions per place. [2024-11-23 01:56:27,683 INFO L140 encePairwiseOnDemand]: 82/97 looper letters, 797 selfloop transitions, 78 changer transitions 10/926 dead transitions. [2024-11-23 01:56:27,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 926 transitions, 8837 flow [2024-11-23 01:56:27,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 01:56:27,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-23 01:56:27,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1073 transitions. [2024-11-23 01:56:27,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5028116213683224 [2024-11-23 01:56:27,686 INFO L175 Difference]: Start difference. First operand has 210 places, 253 transitions, 2165 flow. Second operand 22 states and 1073 transitions. [2024-11-23 01:56:27,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 926 transitions, 8837 flow [2024-11-23 01:56:27,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 926 transitions, 8789 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:56:27,801 INFO L231 Difference]: Finished difference. Result has 235 places, 277 transitions, 2536 flow [2024-11-23 01:56:27,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2149, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2536, PETRI_PLACES=235, PETRI_TRANSITIONS=277} [2024-11-23 01:56:27,802 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 144 predicate places. [2024-11-23 01:56:27,802 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 277 transitions, 2536 flow [2024-11-23 01:56:27,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 39.36842105263158) internal successors, (748), 19 states have internal predecessors, (748), 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) [2024-11-23 01:56:27,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:27,802 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, 1, 1, 1] [2024-11-23 01:56:27,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-23 01:56:28,003 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 [2024-11-23 01:56:28,003 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:56:28,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:28,004 INFO L85 PathProgramCache]: Analyzing trace with hash 5185519, now seen corresponding path program 1 times [2024-11-23 01:56:28,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:28,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820809772] [2024-11-23 01:56:28,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:28,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:28,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 01:56:28,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:28,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820809772] [2024-11-23 01:56:28,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820809772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:28,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785026775] [2024-11-23 01:56:28,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:28,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:28,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:28,376 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) [2024-11-23 01:56:28,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 01:56:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:28,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-23 01:56:28,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:28,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 01:56:28,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-23 01:56:28,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 01:56:28,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:56:28,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-23 01:56:28,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-23 01:56:28,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 01:56:28,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785026775] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:56:28,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:56:28,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-23 01:56:28,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768105234] [2024-11-23 01:56:28,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:56:28,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 01:56:28,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:28,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 01:56:28,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-23 01:56:29,068 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 97 [2024-11-23 01:56:29,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 277 transitions, 2536 flow. Second operand has 18 states, 18 states have (on average 39.77777777777778) internal successors, (716), 18 states have internal predecessors, (716), 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) [2024-11-23 01:56:29,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:29,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 97 [2024-11-23 01:56:29,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:31,503 INFO L124 PetriNetUnfolderBase]: 7484/15076 cut-off events. [2024-11-23 01:56:31,503 INFO L125 PetriNetUnfolderBase]: For 50525/51299 co-relation queries the response was YES. [2024-11-23 01:56:31,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51994 conditions, 15076 events. 7484/15076 cut-off events. For 50525/51299 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 135422 event pairs, 2327 based on Foata normal form. 767/15316 useless extension candidates. Maximal degree in co-relation 51946. Up to 3252 conditions per place. [2024-11-23 01:56:31,632 INFO L140 encePairwiseOnDemand]: 79/97 looper letters, 700 selfloop transitions, 83 changer transitions 160/989 dead transitions. [2024-11-23 01:56:31,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 989 transitions, 9684 flow [2024-11-23 01:56:31,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-23 01:56:31,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-23 01:56:31,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1180 transitions. [2024-11-23 01:56:31,635 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.506872852233677 [2024-11-23 01:56:31,635 INFO L175 Difference]: Start difference. First operand has 235 places, 277 transitions, 2536 flow. Second operand 24 states and 1180 transitions. [2024-11-23 01:56:31,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 989 transitions, 9684 flow [2024-11-23 01:56:31,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 989 transitions, 9607 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-23 01:56:31,812 INFO L231 Difference]: Finished difference. Result has 259 places, 297 transitions, 2828 flow [2024-11-23 01:56:31,813 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2459, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2828, PETRI_PLACES=259, PETRI_TRANSITIONS=297} [2024-11-23 01:56:31,813 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 168 predicate places. [2024-11-23 01:56:31,813 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 297 transitions, 2828 flow [2024-11-23 01:56:31,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 39.77777777777778) internal successors, (716), 18 states have internal predecessors, (716), 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) [2024-11-23 01:56:31,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:31,814 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:31,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-23 01:56:32,018 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,SelfDestructingSolverStorable27 [2024-11-23 01:56:32,019 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:56:32,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:32,019 INFO L85 PathProgramCache]: Analyzing trace with hash -905004743, now seen corresponding path program 2 times [2024-11-23 01:56:32,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:32,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487127107] [2024-11-23 01:56:32,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:56:32,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:32,052 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:56:32,052 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:56:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:56:32,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:32,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487127107] [2024-11-23 01:56:32,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487127107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:32,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658241419] [2024-11-23 01:56:32,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:56:32,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:32,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:32,254 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) [2024-11-23 01:56:32,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-23 01:56:32,378 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:56:32,378 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:56:32,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 01:56:32,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:32,515 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:56:32,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:56:32,703 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:56:32,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658241419] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:56:32,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:56:32,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2024-11-23 01:56:32,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591178266] [2024-11-23 01:56:32,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:56:32,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-23 01:56:32,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:32,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-23 01:56:32,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2024-11-23 01:56:32,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 97 [2024-11-23 01:56:32,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 297 transitions, 2828 flow. Second operand has 28 states, 28 states have (on average 42.785714285714285) internal successors, (1198), 28 states have internal predecessors, (1198), 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) [2024-11-23 01:56:32,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:32,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 97 [2024-11-23 01:56:32,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:34,810 INFO L124 PetriNetUnfolderBase]: 4598/11501 cut-off events. [2024-11-23 01:56:34,810 INFO L125 PetriNetUnfolderBase]: For 41828/42238 co-relation queries the response was YES. [2024-11-23 01:56:34,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41558 conditions, 11501 events. 4598/11501 cut-off events. For 41828/42238 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 111089 event pairs, 3482 based on Foata normal form. 172/11399 useless extension candidates. Maximal degree in co-relation 41502. Up to 2729 conditions per place. [2024-11-23 01:56:34,876 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 240 selfloop transitions, 137 changer transitions 0/444 dead transitions. [2024-11-23 01:56:34,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 444 transitions, 4435 flow [2024-11-23 01:56:34,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-23 01:56:34,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-23 01:56:34,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 940 transitions. [2024-11-23 01:56:34,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4845360824742268 [2024-11-23 01:56:34,878 INFO L175 Difference]: Start difference. First operand has 259 places, 297 transitions, 2828 flow. Second operand 20 states and 940 transitions. [2024-11-23 01:56:34,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 444 transitions, 4435 flow [2024-11-23 01:56:35,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 444 transitions, 4382 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-11-23 01:56:35,087 INFO L231 Difference]: Finished difference. Result has 274 places, 365 transitions, 3523 flow [2024-11-23 01:56:35,088 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2775, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3523, PETRI_PLACES=274, PETRI_TRANSITIONS=365} [2024-11-23 01:56:35,088 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 183 predicate places. [2024-11-23 01:56:35,088 INFO L471 AbstractCegarLoop]: Abstraction has has 274 places, 365 transitions, 3523 flow [2024-11-23 01:56:35,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 42.785714285714285) internal successors, (1198), 28 states have internal predecessors, (1198), 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) [2024-11-23 01:56:35,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:35,089 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, 1, 1, 1, 1] [2024-11-23 01:56:35,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-23 01:56:35,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-23 01:56:35,290 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:56:35,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:35,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1108069321, now seen corresponding path program 1 times [2024-11-23 01:56:35,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:35,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545651843] [2024-11-23 01:56:35,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:35,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 01:56:35,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:35,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545651843] [2024-11-23 01:56:35,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545651843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:35,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:35,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:56:35,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369023948] [2024-11-23 01:56:35,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:35,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:56:35,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:35,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:56:35,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:56:35,382 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-23 01:56:35,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 365 transitions, 3523 flow. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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) [2024-11-23 01:56:35,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:35,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-23 01:56:35,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:36,740 INFO L124 PetriNetUnfolderBase]: 6302/13448 cut-off events. [2024-11-23 01:56:36,740 INFO L125 PetriNetUnfolderBase]: For 49664/50342 co-relation queries the response was YES. [2024-11-23 01:56:36,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49016 conditions, 13448 events. 6302/13448 cut-off events. For 49664/50342 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 118739 event pairs, 2607 based on Foata normal form. 417/13638 useless extension candidates. Maximal degree in co-relation 48957. Up to 5867 conditions per place. [2024-11-23 01:56:36,861 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 331 selfloop transitions, 16 changer transitions 102/498 dead transitions. [2024-11-23 01:56:36,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 498 transitions, 5621 flow [2024-11-23 01:56:36,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:56:36,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:56:36,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 257 transitions. [2024-11-23 01:56:36,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6623711340206185 [2024-11-23 01:56:36,862 INFO L175 Difference]: Start difference. First operand has 274 places, 365 transitions, 3523 flow. Second operand 4 states and 257 transitions. [2024-11-23 01:56:36,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 498 transitions, 5621 flow [2024-11-23 01:56:37,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 498 transitions, 5465 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-23 01:56:37,086 INFO L231 Difference]: Finished difference. Result has 265 places, 298 transitions, 2810 flow [2024-11-23 01:56:37,087 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=3289, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2810, PETRI_PLACES=265, PETRI_TRANSITIONS=298} [2024-11-23 01:56:37,087 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 174 predicate places. [2024-11-23 01:56:37,087 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 298 transitions, 2810 flow [2024-11-23 01:56:37,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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) [2024-11-23 01:56:37,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:37,088 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:37,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-23 01:56:37,088 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:56:37,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:37,088 INFO L85 PathProgramCache]: Analyzing trace with hash -2017879140, now seen corresponding path program 1 times [2024-11-23 01:56:37,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:37,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671933324] [2024-11-23 01:56:37,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:37,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-23 01:56:37,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:37,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671933324] [2024-11-23 01:56:37,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671933324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:37,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:37,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:56:37,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169043088] [2024-11-23 01:56:37,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:37,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:56:37,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:37,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:56:37,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:56:37,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-23 01:56:37,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 298 transitions, 2810 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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) [2024-11-23 01:56:37,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:37,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-23 01:56:37,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:38,212 INFO L124 PetriNetUnfolderBase]: 3689/8344 cut-off events. [2024-11-23 01:56:38,212 INFO L125 PetriNetUnfolderBase]: For 33051/33609 co-relation queries the response was YES. [2024-11-23 01:56:38,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31690 conditions, 8344 events. 3689/8344 cut-off events. For 33051/33609 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 71175 event pairs, 1274 based on Foata normal form. 246/8545 useless extension candidates. Maximal degree in co-relation 31630. Up to 3198 conditions per place. [2024-11-23 01:56:38,285 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 321 selfloop transitions, 22 changer transitions 0/389 dead transitions. [2024-11-23 01:56:38,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 389 transitions, 4284 flow [2024-11-23 01:56:38,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:56:38,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:56:38,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 260 transitions. [2024-11-23 01:56:38,287 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6701030927835051 [2024-11-23 01:56:38,287 INFO L175 Difference]: Start difference. First operand has 265 places, 298 transitions, 2810 flow. Second operand 4 states and 260 transitions. [2024-11-23 01:56:38,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 389 transitions, 4284 flow [2024-11-23 01:56:38,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 389 transitions, 4182 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-23 01:56:38,405 INFO L231 Difference]: Finished difference. Result has 261 places, 295 transitions, 2776 flow [2024-11-23 01:56:38,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2732, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2776, PETRI_PLACES=261, PETRI_TRANSITIONS=295} [2024-11-23 01:56:38,406 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 170 predicate places. [2024-11-23 01:56:38,406 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 295 transitions, 2776 flow [2024-11-23 01:56:38,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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) [2024-11-23 01:56:38,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:38,406 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:38,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-23 01:56:38,406 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:56:38,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:38,407 INFO L85 PathProgramCache]: Analyzing trace with hash -2017880165, now seen corresponding path program 2 times [2024-11-23 01:56:38,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:38,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498830942] [2024-11-23 01:56:38,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:56:38,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:38,434 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:56:38,434 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:56:38,655 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:56:38,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:38,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498830942] [2024-11-23 01:56:38,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498830942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:38,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193087572] [2024-11-23 01:56:38,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:56:38,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:38,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:38,659 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) [2024-11-23 01:56:38,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-23 01:56:38,795 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:56:38,795 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:56:38,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 01:56:38,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:38,946 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:56:38,946 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:56:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:56:39,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193087572] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:56:39,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:56:39,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2024-11-23 01:56:39,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784904916] [2024-11-23 01:56:39,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:56:39,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-23 01:56:39,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:39,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-23 01:56:39,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2024-11-23 01:56:39,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 97 [2024-11-23 01:56:39,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 295 transitions, 2776 flow. Second operand has 28 states, 28 states have (on average 42.92857142857143) internal successors, (1202), 28 states have internal predecessors, (1202), 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) [2024-11-23 01:56:39,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:39,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 97 [2024-11-23 01:56:39,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:40,549 INFO L124 PetriNetUnfolderBase]: 2984/7408 cut-off events. [2024-11-23 01:56:40,549 INFO L125 PetriNetUnfolderBase]: For 28400/28826 co-relation queries the response was YES. [2024-11-23 01:56:40,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27770 conditions, 7408 events. 2984/7408 cut-off events. For 28400/28826 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 65147 event pairs, 2174 based on Foata normal form. 165/7497 useless extension candidates. Maximal degree in co-relation 27712. Up to 2744 conditions per place. [2024-11-23 01:56:40,616 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 193 selfloop transitions, 105 changer transitions 46/399 dead transitions. [2024-11-23 01:56:40,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 399 transitions, 4178 flow [2024-11-23 01:56:40,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-23 01:56:40,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-23 01:56:40,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 948 transitions. [2024-11-23 01:56:40,618 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.488659793814433 [2024-11-23 01:56:40,618 INFO L175 Difference]: Start difference. First operand has 261 places, 295 transitions, 2776 flow. Second operand 20 states and 948 transitions. [2024-11-23 01:56:40,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 399 transitions, 4178 flow [2024-11-23 01:56:40,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 399 transitions, 4134 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-23 01:56:40,722 INFO L231 Difference]: Finished difference. Result has 280 places, 315 transitions, 3199 flow [2024-11-23 01:56:40,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2725, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3199, PETRI_PLACES=280, PETRI_TRANSITIONS=315} [2024-11-23 01:56:40,723 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 189 predicate places. [2024-11-23 01:56:40,723 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 315 transitions, 3199 flow [2024-11-23 01:56:40,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 42.92857142857143) internal successors, (1202), 28 states have internal predecessors, (1202), 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) [2024-11-23 01:56:40,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:40,724 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-11-23 01:56:40,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-23 01:56:40,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:40,924 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:56:40,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:40,925 INFO L85 PathProgramCache]: Analyzing trace with hash -995850439, now seen corresponding path program 3 times [2024-11-23 01:56:40,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:40,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024256625] [2024-11-23 01:56:40,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 01:56:40,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:40,994 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-23 01:56:40,994 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:56:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 01:56:41,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:41,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024256625] [2024-11-23 01:56:41,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024256625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:41,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525336106] [2024-11-23 01:56:41,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 01:56:41,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:41,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:41,309 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) [2024-11-23 01:56:41,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-23 01:56:41,454 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-23 01:56:41,454 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:56:41,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-23 01:56:41,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:41,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-23 01:56:41,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-23 01:56:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 01:56:41,601 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:56:41,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525336106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:41,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:56:41,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-11-23 01:56:41,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812133910] [2024-11-23 01:56:41,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:41,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 01:56:41,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:41,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 01:56:41,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:56:41,748 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 97 [2024-11-23 01:56:41,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 315 transitions, 3199 flow. Second operand has 7 states, 7 states have (on average 53.285714285714285) internal successors, (373), 7 states have internal predecessors, (373), 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) [2024-11-23 01:56:41,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:41,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 97 [2024-11-23 01:56:41,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:43,434 INFO L124 PetriNetUnfolderBase]: 3037/7243 cut-off events. [2024-11-23 01:56:43,434 INFO L125 PetriNetUnfolderBase]: For 27434/27908 co-relation queries the response was YES. [2024-11-23 01:56:43,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27038 conditions, 7243 events. 3037/7243 cut-off events. For 27434/27908 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 62229 event pairs, 650 based on Foata normal form. 235/7470 useless extension candidates. Maximal degree in co-relation 26978. Up to 2924 conditions per place. [2024-11-23 01:56:43,482 INFO L140 encePairwiseOnDemand]: 90/97 looper letters, 249 selfloop transitions, 59 changer transitions 0/359 dead transitions. [2024-11-23 01:56:43,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 359 transitions, 4174 flow [2024-11-23 01:56:43,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 01:56:43,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 01:56:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 405 transitions. [2024-11-23 01:56:43,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5964653902798233 [2024-11-23 01:56:43,484 INFO L175 Difference]: Start difference. First operand has 280 places, 315 transitions, 3199 flow. Second operand 7 states and 405 transitions. [2024-11-23 01:56:43,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 359 transitions, 4174 flow [2024-11-23 01:56:43,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 359 transitions, 4022 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-11-23 01:56:43,575 INFO L231 Difference]: Finished difference. Result has 271 places, 312 transitions, 3142 flow [2024-11-23 01:56:43,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=3024, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3142, PETRI_PLACES=271, PETRI_TRANSITIONS=312} [2024-11-23 01:56:43,576 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 180 predicate places. [2024-11-23 01:56:43,576 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 312 transitions, 3142 flow [2024-11-23 01:56:43,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.285714285714285) internal successors, (373), 7 states have internal predecessors, (373), 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) [2024-11-23 01:56:43,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:43,577 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-11-23 01:56:43,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-23 01:56:43,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:43,777 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:56:43,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:43,778 INFO L85 PathProgramCache]: Analyzing trace with hash -806623202, now seen corresponding path program 2 times [2024-11-23 01:56:43,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:43,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833020743] [2024-11-23 01:56:43,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:56:43,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:43,833 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:56:43,837 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:56:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 01:56:44,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:44,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833020743] [2024-11-23 01:56:44,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833020743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:44,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244240573] [2024-11-23 01:56:44,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:56:44,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:44,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:44,158 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) [2024-11-23 01:56:44,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-23 01:56:44,298 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:56:44,298 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:56:44,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-23 01:56:44,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:44,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-23 01:56:44,835 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 01:56:44,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-23 01:56:44,853 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:56:44,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:56:45,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-23 01:56:45,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-23 01:56:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:56:45,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244240573] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:56:45,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:56:45,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 17, 17] total 37 [2024-11-23 01:56:45,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901534542] [2024-11-23 01:56:45,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:56:45,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-23 01:56:45,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:45,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-23 01:56:45,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1239, Unknown=0, NotChecked=0, Total=1406 [2024-11-23 01:56:46,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 97 [2024-11-23 01:56:46,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 312 transitions, 3142 flow. Second operand has 38 states, 38 states have (on average 37.89473684210526) internal successors, (1440), 38 states have internal predecessors, (1440), 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) [2024-11-23 01:56:46,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:46,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 97 [2024-11-23 01:56:46,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:48,533 INFO L124 PetriNetUnfolderBase]: 4957/11385 cut-off events. [2024-11-23 01:56:48,533 INFO L125 PetriNetUnfolderBase]: For 46560/47488 co-relation queries the response was YES. [2024-11-23 01:56:48,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42936 conditions, 11385 events. 4957/11385 cut-off events. For 46560/47488 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 103663 event pairs, 1040 based on Foata normal form. 471/11846 useless extension candidates. Maximal degree in co-relation 42876. Up to 1836 conditions per place. [2024-11-23 01:56:48,639 INFO L140 encePairwiseOnDemand]: 86/97 looper letters, 309 selfloop transitions, 96 changer transitions 25/479 dead transitions. [2024-11-23 01:56:48,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 479 transitions, 5228 flow [2024-11-23 01:56:48,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 01:56:48,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-23 01:56:48,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 943 transitions. [2024-11-23 01:56:48,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44189315838800375 [2024-11-23 01:56:48,641 INFO L175 Difference]: Start difference. First operand has 271 places, 312 transitions, 3142 flow. Second operand 22 states and 943 transitions. [2024-11-23 01:56:48,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 479 transitions, 5228 flow [2024-11-23 01:56:48,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 479 transitions, 5078 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-23 01:56:48,869 INFO L231 Difference]: Finished difference. Result has 285 places, 318 transitions, 3286 flow [2024-11-23 01:56:48,869 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=3015, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3286, PETRI_PLACES=285, PETRI_TRANSITIONS=318} [2024-11-23 01:56:48,870 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 194 predicate places. [2024-11-23 01:56:48,870 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 318 transitions, 3286 flow [2024-11-23 01:56:48,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 37.89473684210526) internal successors, (1440), 38 states have internal predecessors, (1440), 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) [2024-11-23 01:56:48,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:48,871 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-11-23 01:56:48,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-23 01:56:49,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:49,071 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:56:49,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:49,072 INFO L85 PathProgramCache]: Analyzing trace with hash 2061947131, now seen corresponding path program 3 times [2024-11-23 01:56:49,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:49,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585746723] [2024-11-23 01:56:49,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 01:56:49,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:49,116 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-23 01:56:49,117 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:56:49,561 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 01:56:49,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:49,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585746723] [2024-11-23 01:56:49,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585746723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:49,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119040672] [2024-11-23 01:56:49,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 01:56:49,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:49,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:49,566 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) [2024-11-23 01:56:49,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-23 01:56:49,702 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-23 01:56:49,702 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:56:49,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-23 01:56:49,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:49,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 01:56:49,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-23 01:56:49,852 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-23 01:56:49,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-23 01:56:49,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-23 01:56:49,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2024-11-23 01:56:49,950 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 01:56:49,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:56:50,118 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:56:50,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-23 01:56:50,127 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:56:50,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 41 [2024-11-23 01:56:50,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2024-11-23 01:56:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 01:56:50,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119040672] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:56:50,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:56:50,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-23 01:56:50,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988987484] [2024-11-23 01:56:50,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:56:50,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 01:56:50,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:50,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 01:56:50,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=315, Unknown=9, NotChecked=0, Total=380 [2024-11-23 01:56:50,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 97 [2024-11-23 01:56:50,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 318 transitions, 3286 flow. Second operand has 20 states, 20 states have (on average 32.7) internal successors, (654), 20 states have internal predecessors, (654), 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) [2024-11-23 01:56:50,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:50,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 97 [2024-11-23 01:56:50,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:52,728 INFO L124 PetriNetUnfolderBase]: 6815/13061 cut-off events. [2024-11-23 01:56:52,728 INFO L125 PetriNetUnfolderBase]: For 44231/45587 co-relation queries the response was YES. [2024-11-23 01:56:52,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48282 conditions, 13061 events. 6815/13061 cut-off events. For 44231/45587 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 106584 event pairs, 1040 based on Foata normal form. 762/13781 useless extension candidates. Maximal degree in co-relation 48221. Up to 3912 conditions per place. [2024-11-23 01:56:52,864 INFO L140 encePairwiseOnDemand]: 83/97 looper letters, 390 selfloop transitions, 99 changer transitions 0/523 dead transitions. [2024-11-23 01:56:52,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 523 transitions, 5808 flow [2024-11-23 01:56:52,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 01:56:52,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-23 01:56:52,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 507 transitions. [2024-11-23 01:56:52,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4020618556701031 [2024-11-23 01:56:52,866 INFO L175 Difference]: Start difference. First operand has 285 places, 318 transitions, 3286 flow. Second operand 13 states and 507 transitions. [2024-11-23 01:56:52,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 523 transitions, 5808 flow [2024-11-23 01:56:53,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 523 transitions, 5611 flow, removed 7 selfloop flow, removed 21 redundant places. [2024-11-23 01:56:53,078 INFO L231 Difference]: Finished difference. Result has 275 places, 316 transitions, 3295 flow [2024-11-23 01:56:53,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=3097, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3295, PETRI_PLACES=275, PETRI_TRANSITIONS=316} [2024-11-23 01:56:53,079 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 184 predicate places. [2024-11-23 01:56:53,079 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 316 transitions, 3295 flow [2024-11-23 01:56:53,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 32.7) internal successors, (654), 20 states have internal predecessors, (654), 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) [2024-11-23 01:56:53,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:53,079 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-11-23 01:56:53,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-23 01:56:53,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-23 01:56:53,284 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-23 01:56:53,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:53,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1005687967, now seen corresponding path program 2 times [2024-11-23 01:56:53,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:53,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585741258] [2024-11-23 01:56:53,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:56:53,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:53,322 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:56:53,323 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat