./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.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 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:04:40,731 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:04:40,804 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:04:40,809 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:04:40,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:04:40,842 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:04:40,843 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:04:40,844 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:04:40,844 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:04:40,845 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:04:40,845 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:04:40,845 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:04:40,847 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:04:40,849 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:04:40,850 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:04:40,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:04:40,851 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:04:40,851 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:04:40,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:04:40,852 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:04:40,852 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:04:40,853 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:04:40,853 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:04:40,853 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:04:40,854 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:04:40,854 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:04:40,854 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:04:40,858 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:04:40,859 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:04:40,859 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:04:40,859 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:04:40,859 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:04:40,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:04:40,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:04:40,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:04:40,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:04:40,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:04:40,861 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:04:40,861 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:04:40,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:04:40,862 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:04:40,863 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:04:40,863 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:04:40,863 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:04:40,864 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 [2024-10-15 00:04:41,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:04:41,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:04:41,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:04:41,196 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:04:41,196 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:04:41,198 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-10-15 00:04:42,830 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:04:43,067 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:04:43,068 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-10-15 00:04:43,077 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac8e842f8/45e3fefa701f4be5ad362e0f6839b221/FLAG8be75f8de [2024-10-15 00:04:43,094 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac8e842f8/45e3fefa701f4be5ad362e0f6839b221 [2024-10-15 00:04:43,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:04:43,098 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:04:43,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:04:43,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:04:43,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:04:43,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:04:43" (1/1) ... [2024-10-15 00:04:43,110 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465f9b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:43, skipping insertion in model container [2024-10-15 00:04:43,110 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:04:43" (1/1) ... [2024-10-15 00:04:43,139 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:04:43,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:04:43,372 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:04:43,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:04:43,461 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:04:43,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:43 WrapperNode [2024-10-15 00:04:43,462 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:04:43,463 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:04:43,464 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:04:43,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:04:43,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:43" (1/1) ... [2024-10-15 00:04:43,480 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:43" (1/1) ... [2024-10-15 00:04:43,518 INFO L138 Inliner]: procedures = 25, calls = 54, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 278 [2024-10-15 00:04:43,518 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:04:43,519 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:04:43,520 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:04:43,520 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:04:43,538 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:43" (1/1) ... [2024-10-15 00:04:43,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:43" (1/1) ... [2024-10-15 00:04:43,543 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:43" (1/1) ... [2024-10-15 00:04:43,568 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-15 00:04:43,568 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:43" (1/1) ... [2024-10-15 00:04:43,568 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:43" (1/1) ... [2024-10-15 00:04:43,577 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:43" (1/1) ... [2024-10-15 00:04:43,586 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:43" (1/1) ... [2024-10-15 00:04:43,590 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:43" (1/1) ... [2024-10-15 00:04:43,592 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:43" (1/1) ... [2024-10-15 00:04:43,596 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:04:43,598 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:04:43,598 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:04:43,598 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:04:43,599 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:43" (1/1) ... [2024-10-15 00:04:43,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:04:43,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:43,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-15 00:04:43,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-15 00:04:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:04:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:04:43,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:04:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:04:43,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:04:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-15 00:04:43,711 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-15 00:04:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-15 00:04:43,711 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-15 00:04:43,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:04:43,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 00:04:43,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 00:04:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 00:04:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-15 00:04:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-15 00:04:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-15 00:04:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:04:43,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:04:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 00:04:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 00:04:43,718 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:04:43,861 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:04:43,863 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:04:44,360 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:04:44,361 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:04:44,735 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:04:44,736 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-15 00:04:44,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:04:44 BoogieIcfgContainer [2024-10-15 00:04:44,736 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:04:44,739 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:04:44,739 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:04:44,743 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:04:44,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:04:43" (1/3) ... [2024-10-15 00:04:44,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3c5c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:04:44, skipping insertion in model container [2024-10-15 00:04:44,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:43" (2/3) ... [2024-10-15 00:04:44,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3c5c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:04:44, skipping insertion in model container [2024-10-15 00:04:44,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:04:44" (3/3) ... [2024-10-15 00:04:44,748 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2024-10-15 00:04:44,769 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:04:44,769 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-10-15 00:04:44,769 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:04:44,862 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-15 00:04:44,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 182 flow [2024-10-15 00:04:44,957 INFO L124 PetriNetUnfolderBase]: 6/73 cut-off events. [2024-10-15 00:04:44,957 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-15 00:04:44,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 73 events. 6/73 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 248 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-10-15 00:04:44,965 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 77 transitions, 182 flow [2024-10-15 00:04:44,969 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 71 transitions, 163 flow [2024-10-15 00:04:44,983 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:04:44,992 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;@72be9e8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:04:44,993 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-10-15 00:04:44,998 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:04:44,998 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-15 00:04:44,998 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-15 00:04:44,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:45,000 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-15 00:04:45,000 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-15 00:04:45,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:45,006 INFO L85 PathProgramCache]: Analyzing trace with hash 815461, now seen corresponding path program 1 times [2024-10-15 00:04:45,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:45,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351780093] [2024-10-15 00:04:45,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:45,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:45,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:45,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351780093] [2024-10-15 00:04:45,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351780093] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:45,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:45,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:04:45,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683148451] [2024-10-15 00:04:45,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:45,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:04:45,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:45,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:04:45,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:04:45,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-15 00:04:45,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:45,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:45,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-15 00:04:45,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:50,448 INFO L124 PetriNetUnfolderBase]: 31498/43058 cut-off events. [2024-10-15 00:04:50,449 INFO L125 PetriNetUnfolderBase]: For 1888/1888 co-relation queries the response was YES. [2024-10-15 00:04:50,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85356 conditions, 43058 events. 31498/43058 cut-off events. For 1888/1888 co-relation queries the response was YES. Maximal size of possible extension queue 2747. Compared 293362 event pairs, 25002 based on Foata normal form. 2/28231 useless extension candidates. Maximal degree in co-relation 80473. Up to 40235 conditions per place. [2024-10-15 00:04:50,968 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 50 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2024-10-15 00:04:50,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 281 flow [2024-10-15 00:04:50,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:04:50,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:04:50,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-10-15 00:04:50,983 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4707792207792208 [2024-10-15 00:04:50,985 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 163 flow. Second operand 4 states and 145 transitions. [2024-10-15 00:04:50,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 281 flow [2024-10-15 00:04:51,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 268 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-15 00:04:51,131 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 202 flow [2024-10-15 00:04:51,134 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2024-10-15 00:04:51,139 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -5 predicate places. [2024-10-15 00:04:51,139 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 202 flow [2024-10-15 00:04:51,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:51,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:51,140 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-15 00:04:51,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:04:51,141 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-15 00:04:51,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:51,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1475571405, now seen corresponding path program 1 times [2024-10-15 00:04:51,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:51,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480192972] [2024-10-15 00:04:51,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:51,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:51,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:51,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:51,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480192972] [2024-10-15 00:04:51,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480192972] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:51,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027194527] [2024-10-15 00:04:51,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:51,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:51,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:51,347 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:51,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:04:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:51,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:04:51,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:51,521 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:04:51,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027194527] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:51,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:04:51,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-15 00:04:51,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532905628] [2024-10-15 00:04:51,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:51,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:04:51,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:51,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:04:51,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:04:51,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-15 00:04:51,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:51,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:51,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-15 00:04:51,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:55,523 INFO L124 PetriNetUnfolderBase]: 31498/43056 cut-off events. [2024-10-15 00:04:55,523 INFO L125 PetriNetUnfolderBase]: For 389/389 co-relation queries the response was YES. [2024-10-15 00:04:55,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84756 conditions, 43056 events. 31498/43056 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 2747. Compared 293497 event pairs, 25002 based on Foata normal form. 2/28232 useless extension candidates. Maximal degree in co-relation 84706. Up to 40225 conditions per place. [2024-10-15 00:04:55,964 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 43 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2024-10-15 00:04:55,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 304 flow [2024-10-15 00:04:55,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:04:55,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:04:55,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-10-15 00:04:55,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38311688311688313 [2024-10-15 00:04:55,971 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 202 flow. Second operand 6 states and 177 transitions. [2024-10-15 00:04:55,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 304 flow [2024-10-15 00:04:55,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 71 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-15 00:04:55,976 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 218 flow [2024-10-15 00:04:55,977 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2024-10-15 00:04:55,977 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-10-15 00:04:55,978 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 218 flow [2024-10-15 00:04:55,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:55,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:55,979 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-15 00:04:56,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 00:04:56,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:56,185 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-15 00:04:56,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:56,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1501927541, now seen corresponding path program 1 times [2024-10-15 00:04:56,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:56,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151713885] [2024-10-15 00:04:56,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:56,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:56,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:56,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151713885] [2024-10-15 00:04:56,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151713885] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:56,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509263222] [2024-10-15 00:04:56,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:56,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:56,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:56,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:56,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:04:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:56,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:04:56,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:56,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:56,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:56,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:56,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509263222] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:56,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:56,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-15 00:04:56,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580013758] [2024-10-15 00:04:56,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:56,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:04:56,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:56,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:04:56,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:04:56,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-15 00:04:56,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:56,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:56,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-15 00:04:56,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:59,851 INFO L124 PetriNetUnfolderBase]: 31504/43080 cut-off events. [2024-10-15 00:04:59,852 INFO L125 PetriNetUnfolderBase]: For 431/431 co-relation queries the response was YES. [2024-10-15 00:04:59,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84850 conditions, 43080 events. 31504/43080 cut-off events. For 431/431 co-relation queries the response was YES. Maximal size of possible extension queue 2747. Compared 293918 event pairs, 25002 based on Foata normal form. 6/28259 useless extension candidates. Maximal degree in co-relation 84708. Up to 40236 conditions per place. [2024-10-15 00:05:00,222 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 48 selfloop transitions, 25 changer transitions 0/89 dead transitions. [2024-10-15 00:05:00,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 89 transitions, 478 flow [2024-10-15 00:05:00,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:05:00,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:05:00,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 279 transitions. [2024-10-15 00:05:00,225 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36233766233766235 [2024-10-15 00:05:00,225 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 218 flow. Second operand 10 states and 279 transitions. [2024-10-15 00:05:00,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 89 transitions, 478 flow [2024-10-15 00:05:00,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 89 transitions, 420 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-15 00:05:00,233 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 358 flow [2024-10-15 00:05:00,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=358, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2024-10-15 00:05:00,234 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-10-15 00:05:00,235 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 358 flow [2024-10-15 00:05:00,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:00,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:00,236 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:05:00,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 00:05:00,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-15 00:05:00,437 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-15 00:05:00,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:00,438 INFO L85 PathProgramCache]: Analyzing trace with hash 271305435, now seen corresponding path program 1 times [2024-10-15 00:05:00,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:00,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536922670] [2024-10-15 00:05:00,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:00,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:00,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:00,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536922670] [2024-10-15 00:05:00,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536922670] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:05:00,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:05:00,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:05:00,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559684304] [2024-10-15 00:05:00,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:05:00,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:05:00,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:00,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:05:00,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:05:00,592 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-15 00:05:00,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:00,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:00,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-15 00:05:00,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:03,975 INFO L124 PetriNetUnfolderBase]: 35298/48559 cut-off events. [2024-10-15 00:05:03,976 INFO L125 PetriNetUnfolderBase]: For 472/472 co-relation queries the response was YES. [2024-10-15 00:05:04,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95727 conditions, 48559 events. 35298/48559 cut-off events. For 472/472 co-relation queries the response was YES. Maximal size of possible extension queue 2760. Compared 332762 event pairs, 28323 based on Foata normal form. 712/33932 useless extension candidates. Maximal degree in co-relation 95631. Up to 40251 conditions per place. [2024-10-15 00:05:04,472 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 108 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2024-10-15 00:05:04,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 131 transitions, 749 flow [2024-10-15 00:05:04,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:05:04,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:05:04,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-10-15 00:05:04,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5376623376623376 [2024-10-15 00:05:04,474 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 358 flow. Second operand 5 states and 207 transitions. [2024-10-15 00:05:04,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 131 transitions, 749 flow [2024-10-15 00:05:04,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 131 transitions, 715 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-15 00:05:04,480 INFO L231 Difference]: Finished difference. Result has 87 places, 91 transitions, 373 flow [2024-10-15 00:05:04,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=373, PETRI_PLACES=87, PETRI_TRANSITIONS=91} [2024-10-15 00:05:04,482 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-10-15 00:05:04,483 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 91 transitions, 373 flow [2024-10-15 00:05:04,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:04,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:04,483 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:05:04,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-15 00:05:04,484 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-15 00:05:04,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:04,485 INFO L85 PathProgramCache]: Analyzing trace with hash -151225108, now seen corresponding path program 1 times [2024-10-15 00:05:04,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:04,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126957744] [2024-10-15 00:05:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:04,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:04,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:04,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126957744] [2024-10-15 00:05:04,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126957744] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:05:04,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:05:04,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-15 00:05:04,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813679635] [2024-10-15 00:05:04,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:05:04,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:05:04,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:04,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:05:04,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:05:04,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-15 00:05:04,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 91 transitions, 373 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:04,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:04,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-15 00:05:04,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:08,089 INFO L124 PetriNetUnfolderBase]: 32734/46008 cut-off events. [2024-10-15 00:05:08,090 INFO L125 PetriNetUnfolderBase]: For 2790/2790 co-relation queries the response was YES. [2024-10-15 00:05:08,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95277 conditions, 46008 events. 32734/46008 cut-off events. For 2790/2790 co-relation queries the response was YES. Maximal size of possible extension queue 2350. Compared 317361 event pairs, 11055 based on Foata normal form. 751/32668 useless extension candidates. Maximal degree in co-relation 95182. Up to 32693 conditions per place. [2024-10-15 00:05:08,570 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 99 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2024-10-15 00:05:08,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 119 transitions, 645 flow [2024-10-15 00:05:08,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:05:08,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:05:08,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-10-15 00:05:08,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.645021645021645 [2024-10-15 00:05:08,572 INFO L175 Difference]: Start difference. First operand has 87 places, 91 transitions, 373 flow. Second operand 3 states and 149 transitions. [2024-10-15 00:05:08,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 119 transitions, 645 flow [2024-10-15 00:05:08,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 119 transitions, 641 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-15 00:05:08,581 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 383 flow [2024-10-15 00:05:08,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=383, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2024-10-15 00:05:08,583 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 11 predicate places. [2024-10-15 00:05:08,583 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 383 flow [2024-10-15 00:05:08,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:08,584 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:08,584 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:05:08,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-15 00:05:08,584 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-15 00:05:08,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:08,585 INFO L85 PathProgramCache]: Analyzing trace with hash 714889257, now seen corresponding path program 1 times [2024-10-15 00:05:08,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:08,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913114264] [2024-10-15 00:05:08,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:08,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:08,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:08,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:08,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913114264] [2024-10-15 00:05:08,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913114264] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:05:08,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383418168] [2024-10-15 00:05:08,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:08,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:08,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:05:08,773 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:05:08,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:05:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:08,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:05:08,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:05:08,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:05:08,891 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:05:08,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383418168] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:05:08,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:05:08,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-15 00:05:08,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620712453] [2024-10-15 00:05:08,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:05:08,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:05:08,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:08,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:05:08,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-15 00:05:08,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-15 00:05:08,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:08,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:08,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-15 00:05:08,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:11,371 INFO L124 PetriNetUnfolderBase]: 25607/36182 cut-off events. [2024-10-15 00:05:11,371 INFO L125 PetriNetUnfolderBase]: For 4317/4421 co-relation queries the response was YES. [2024-10-15 00:05:11,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77137 conditions, 36182 events. 25607/36182 cut-off events. For 4317/4421 co-relation queries the response was YES. Maximal size of possible extension queue 1649. Compared 238531 event pairs, 21719 based on Foata normal form. 0/27440 useless extension candidates. Maximal degree in co-relation 77041. Up to 33596 conditions per place. [2024-10-15 00:05:11,703 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 71 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2024-10-15 00:05:11,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 519 flow [2024-10-15 00:05:11,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:05:11,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:05:11,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-10-15 00:05:11,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-10-15 00:05:11,705 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 383 flow. Second operand 3 states and 119 transitions. [2024-10-15 00:05:11,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 519 flow [2024-10-15 00:05:11,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 90 transitions, 507 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:05:11,710 INFO L231 Difference]: Finished difference. Result has 87 places, 90 transitions, 365 flow [2024-10-15 00:05:11,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=85, 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=365, PETRI_PLACES=87, PETRI_TRANSITIONS=90} [2024-10-15 00:05:11,711 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-10-15 00:05:11,711 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 90 transitions, 365 flow [2024-10-15 00:05:11,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:11,712 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:11,712 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:05:11,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-15 00:05:11,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:11,913 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-15 00:05:11,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:11,914 INFO L85 PathProgramCache]: Analyzing trace with hash -153412058, now seen corresponding path program 1 times [2024-10-15 00:05:11,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:11,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545258832] [2024-10-15 00:05:11,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:11,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:11,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:11,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545258832] [2024-10-15 00:05:11,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545258832] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:05:11,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:05:11,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:05:11,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767423305] [2024-10-15 00:05:11,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:05:11,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:05:11,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:11,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:05:11,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:05:11,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-15 00:05:11,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 90 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:11,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:11,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-15 00:05:11,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:14,146 INFO L124 PetriNetUnfolderBase]: 21041/29923 cut-off events. [2024-10-15 00:05:14,146 INFO L125 PetriNetUnfolderBase]: For 3594/3698 co-relation queries the response was YES. [2024-10-15 00:05:14,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63814 conditions, 29923 events. 21041/29923 cut-off events. For 3594/3698 co-relation queries the response was YES. Maximal size of possible extension queue 1331. Compared 193348 event pairs, 17797 based on Foata normal form. 0/23478 useless extension candidates. Maximal degree in co-relation 63797. Up to 27687 conditions per place. [2024-10-15 00:05:14,421 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 65 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2024-10-15 00:05:14,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 505 flow [2024-10-15 00:05:14,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:05:14,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:05:14,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-10-15 00:05:14,422 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5064935064935064 [2024-10-15 00:05:14,423 INFO L175 Difference]: Start difference. First operand has 87 places, 90 transitions, 365 flow. Second operand 3 states and 117 transitions. [2024-10-15 00:05:14,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 505 flow [2024-10-15 00:05:14,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:05:14,427 INFO L231 Difference]: Finished difference. Result has 87 places, 89 transitions, 374 flow [2024-10-15 00:05:14,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=87, PETRI_TRANSITIONS=89} [2024-10-15 00:05:14,428 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-10-15 00:05:14,428 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 89 transitions, 374 flow [2024-10-15 00:05:14,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:14,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:14,429 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:05:14,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-15 00:05:14,429 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-15 00:05:14,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:14,430 INFO L85 PathProgramCache]: Analyzing trace with hash -153412057, now seen corresponding path program 1 times [2024-10-15 00:05:14,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:14,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567337504] [2024-10-15 00:05:14,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:14,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:14,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:14,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:14,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567337504] [2024-10-15 00:05:14,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567337504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:05:14,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:05:14,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-15 00:05:14,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124678515] [2024-10-15 00:05:14,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:05:14,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:05:14,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:14,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:05:14,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:05:14,496 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-15 00:05:14,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:14,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:14,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-15 00:05:14,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:16,451 INFO L124 PetriNetUnfolderBase]: 16475/23664 cut-off events. [2024-10-15 00:05:16,451 INFO L125 PetriNetUnfolderBase]: For 2886/2990 co-relation queries the response was YES. [2024-10-15 00:05:16,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50748 conditions, 23664 events. 16475/23664 cut-off events. For 2886/2990 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 148809 event pairs, 13875 based on Foata normal form. 0/19518 useless extension candidates. Maximal degree in co-relation 50731. Up to 21850 conditions per place. [2024-10-15 00:05:16,692 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 67 selfloop transitions, 1 changer transitions 2/88 dead transitions. [2024-10-15 00:05:16,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 88 transitions, 512 flow [2024-10-15 00:05:16,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:05:16,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:05:16,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-10-15 00:05:16,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5021645021645021 [2024-10-15 00:05:16,694 INFO L175 Difference]: Start difference. First operand has 87 places, 89 transitions, 374 flow. Second operand 3 states and 116 transitions. [2024-10-15 00:05:16,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 88 transitions, 512 flow [2024-10-15 00:05:16,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 88 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:05:16,699 INFO L231 Difference]: Finished difference. Result has 87 places, 86 transitions, 356 flow [2024-10-15 00:05:16,700 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=85, 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=356, PETRI_PLACES=87, PETRI_TRANSITIONS=86} [2024-10-15 00:05:16,700 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-10-15 00:05:16,701 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 356 flow [2024-10-15 00:05:16,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:16,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:16,701 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:05:16,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-15 00:05:16,702 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-15 00:05:16,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:16,703 INFO L85 PathProgramCache]: Analyzing trace with hash -186163765, now seen corresponding path program 1 times [2024-10-15 00:05:16,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:16,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222656857] [2024-10-15 00:05:16,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:16,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:16,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:05:16,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:16,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222656857] [2024-10-15 00:05:16,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222656857] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:05:16,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:05:16,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:05:16,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005296620] [2024-10-15 00:05:16,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:05:16,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:05:16,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:16,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:05:16,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:05:16,775 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-10-15 00:05:16,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:16,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:16,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-10-15 00:05:16,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:19,558 INFO L124 PetriNetUnfolderBase]: 22471/33823 cut-off events. [2024-10-15 00:05:19,558 INFO L125 PetriNetUnfolderBase]: For 3617/3708 co-relation queries the response was YES. [2024-10-15 00:05:19,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69901 conditions, 33823 events. 22471/33823 cut-off events. For 3617/3708 co-relation queries the response was YES. Maximal size of possible extension queue 1347. Compared 244342 event pairs, 9475 based on Foata normal form. 778/26820 useless extension candidates. Maximal degree in co-relation 69883. Up to 16179 conditions per place. [2024-10-15 00:05:19,796 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 121 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2024-10-15 00:05:19,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 140 transitions, 742 flow [2024-10-15 00:05:19,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:05:19,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:05:19,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-10-15 00:05:19,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-10-15 00:05:19,798 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 356 flow. Second operand 4 states and 182 transitions. [2024-10-15 00:05:19,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 140 transitions, 742 flow [2024-10-15 00:05:19,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 140 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:05:19,801 INFO L231 Difference]: Finished difference. Result has 88 places, 86 transitions, 368 flow [2024-10-15 00:05:19,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=88, PETRI_TRANSITIONS=86} [2024-10-15 00:05:19,802 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 10 predicate places. [2024-10-15 00:05:19,803 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 86 transitions, 368 flow [2024-10-15 00:05:19,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:19,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:19,803 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:05:19,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-15 00:05:19,804 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-15 00:05:19,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:19,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1142760029, now seen corresponding path program 1 times [2024-10-15 00:05:19,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:19,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955326017] [2024-10-15 00:05:19,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:19,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:05:19,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:19,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955326017] [2024-10-15 00:05:19,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955326017] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:05:19,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:05:19,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:05:19,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374427462] [2024-10-15 00:05:19,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:05:19,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:05:19,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:19,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:05:19,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:05:19,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-15 00:05:19,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:19,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:19,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-15 00:05:19,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:21,622 INFO L124 PetriNetUnfolderBase]: 15747/22397 cut-off events. [2024-10-15 00:05:21,622 INFO L125 PetriNetUnfolderBase]: For 5927/6759 co-relation queries the response was YES. [2024-10-15 00:05:21,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53047 conditions, 22397 events. 15747/22397 cut-off events. For 5927/6759 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 133039 event pairs, 6265 based on Foata normal form. 933/19833 useless extension candidates. Maximal degree in co-relation 53028. Up to 18291 conditions per place. [2024-10-15 00:05:21,869 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 81 selfloop transitions, 2 changer transitions 5/105 dead transitions. [2024-10-15 00:05:21,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 105 transitions, 595 flow [2024-10-15 00:05:21,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:05:21,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:05:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2024-10-15 00:05:21,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2024-10-15 00:05:21,871 INFO L175 Difference]: Start difference. First operand has 88 places, 86 transitions, 368 flow. Second operand 3 states and 133 transitions. [2024-10-15 00:05:21,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 105 transitions, 595 flow [2024-10-15 00:05:21,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 105 transitions, 589 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:05:21,892 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 377 flow [2024-10-15 00:05:21,893 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=377, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2024-10-15 00:05:21,893 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 11 predicate places. [2024-10-15 00:05:21,894 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 377 flow [2024-10-15 00:05:21,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:21,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:21,894 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:05:21,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-15 00:05:21,895 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-15 00:05:21,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:21,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1476108552, now seen corresponding path program 1 times [2024-10-15 00:05:21,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:21,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199993198] [2024-10-15 00:05:21,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:21,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:05:21,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:21,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199993198] [2024-10-15 00:05:21,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199993198] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:05:21,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:05:21,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:05:21,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117680296] [2024-10-15 00:05:21,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:05:21,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:05:21,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:21,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:05:21,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:05:21,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 77 [2024-10-15 00:05:21,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 377 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:21,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:21,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 77 [2024-10-15 00:05:21,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:23,661 INFO L124 PetriNetUnfolderBase]: 15747/23240 cut-off events. [2024-10-15 00:05:23,662 INFO L125 PetriNetUnfolderBase]: For 7385/8083 co-relation queries the response was YES. [2024-10-15 00:05:23,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52985 conditions, 23240 events. 15747/23240 cut-off events. For 7385/8083 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 150086 event pairs, 4623 based on Foata normal form. 698/20251 useless extension candidates. Maximal degree in co-relation 52964. Up to 10927 conditions per place. [2024-10-15 00:05:23,884 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 118 selfloop transitions, 6 changer transitions 0/140 dead transitions. [2024-10-15 00:05:23,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 140 transitions, 763 flow [2024-10-15 00:05:23,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:05:23,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:05:23,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2024-10-15 00:05:23,885 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5324675324675324 [2024-10-15 00:05:23,885 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 377 flow. Second operand 5 states and 205 transitions. [2024-10-15 00:05:23,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 140 transitions, 763 flow [2024-10-15 00:05:23,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 140 transitions, 753 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-15 00:05:23,901 INFO L231 Difference]: Finished difference. Result has 91 places, 86 transitions, 381 flow [2024-10-15 00:05:23,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=91, PETRI_TRANSITIONS=86} [2024-10-15 00:05:23,902 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2024-10-15 00:05:23,902 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 86 transitions, 381 flow [2024-10-15 00:05:23,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:23,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:23,903 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-15 00:05:23,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-15 00:05:23,903 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-15 00:05:23,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:23,904 INFO L85 PathProgramCache]: Analyzing trace with hash 520320003, now seen corresponding path program 2 times [2024-10-15 00:05:23,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:23,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249651179] [2024-10-15 00:05:23,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:23,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:24,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:24,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249651179] [2024-10-15 00:05:24,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249651179] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:05:24,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624475355] [2024-10-15 00:05:24,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:05:24,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:24,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:05:24,068 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:05:24,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 00:05:24,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:05:24,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:05:24,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:05:24,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:05:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:05:24,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:05:24,225 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:05:24,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624475355] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:05:24,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:05:24,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-15 00:05:24,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929715925] [2024-10-15 00:05:24,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:05:24,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 00:05:24,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:24,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 00:05:24,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-15 00:05:24,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-15 00:05:24,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 381 flow. Second operand has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:24,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:24,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-15 00:05:24,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:26,327 INFO L124 PetriNetUnfolderBase]: 15750/22258 cut-off events. [2024-10-15 00:05:26,327 INFO L125 PetriNetUnfolderBase]: For 13062/13774 co-relation queries the response was YES. [2024-10-15 00:05:26,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54092 conditions, 22258 events. 15750/22258 cut-off events. For 13062/13774 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 130534 event pairs, 12494 based on Foata normal form. 692/19087 useless extension candidates. Maximal degree in co-relation 54070. Up to 20668 conditions per place. [2024-10-15 00:05:26,509 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 42 selfloop transitions, 35 changer transitions 0/91 dead transitions. [2024-10-15 00:05:26,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 91 transitions, 564 flow [2024-10-15 00:05:26,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-15 00:05:26,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-15 00:05:26,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 556 transitions. [2024-10-15 00:05:26,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3008658008658009 [2024-10-15 00:05:26,512 INFO L175 Difference]: Start difference. First operand has 91 places, 86 transitions, 381 flow. Second operand 24 states and 556 transitions. [2024-10-15 00:05:26,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 91 transitions, 564 flow [2024-10-15 00:05:26,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 91 transitions, 552 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-15 00:05:26,527 INFO L231 Difference]: Finished difference. Result has 111 places, 91 transitions, 481 flow [2024-10-15 00:05:26,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=481, PETRI_PLACES=111, PETRI_TRANSITIONS=91} [2024-10-15 00:05:26,528 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 33 predicate places. [2024-10-15 00:05:26,528 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 91 transitions, 481 flow [2024-10-15 00:05:26,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:26,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:26,529 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:05:26,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-15 00:05:26,729 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 [2024-10-15 00:05:26,730 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-15 00:05:26,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:26,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1823920165, now seen corresponding path program 1 times [2024-10-15 00:05:26,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:26,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590648596] [2024-10-15 00:05:26,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:26,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:05:26,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:26,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590648596] [2024-10-15 00:05:26,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590648596] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:05:26,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:05:26,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:05:26,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090589759] [2024-10-15 00:05:26,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:05:26,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:05:26,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:26,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:05:26,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:05:26,840 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-15 00:05:26,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 91 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:26,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:26,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-15 00:05:26,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:29,131 INFO L124 PetriNetUnfolderBase]: 18145/26027 cut-off events. [2024-10-15 00:05:29,131 INFO L125 PetriNetUnfolderBase]: For 6594/7399 co-relation queries the response was YES. [2024-10-15 00:05:29,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58833 conditions, 26027 events. 18145/26027 cut-off events. For 6594/7399 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 159909 event pairs, 14598 based on Foata normal form. 1059/23091 useless extension candidates. Maximal degree in co-relation 58809. Up to 20694 conditions per place. [2024-10-15 00:05:29,357 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 67 selfloop transitions, 8 changer transitions 26/116 dead transitions. [2024-10-15 00:05:29,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 754 flow [2024-10-15 00:05:29,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:05:29,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:05:29,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-10-15 00:05:29,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-10-15 00:05:29,359 INFO L175 Difference]: Start difference. First operand has 111 places, 91 transitions, 481 flow. Second operand 4 states and 168 transitions. [2024-10-15 00:05:29,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 754 flow [2024-10-15 00:05:29,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 116 transitions, 660 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-10-15 00:05:29,370 INFO L231 Difference]: Finished difference. Result has 104 places, 90 transitions, 404 flow [2024-10-15 00:05:29,370 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=404, PETRI_PLACES=104, PETRI_TRANSITIONS=90} [2024-10-15 00:05:29,371 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 26 predicate places. [2024-10-15 00:05:29,371 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 90 transitions, 404 flow [2024-10-15 00:05:29,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:29,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:29,372 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-15 00:05:29,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-15 00:05:29,372 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-15 00:05:29,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:29,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1376712487, now seen corresponding path program 1 times [2024-10-15 00:05:29,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:29,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852693681] [2024-10-15 00:05:29,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:29,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:29,581 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:29,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:29,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852693681] [2024-10-15 00:05:29,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852693681] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:05:29,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683856417] [2024-10-15 00:05:29,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:29,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:29,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:05:29,584 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:05:29,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 00:05:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:29,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-15 00:05:29,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:05:29,734 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:29,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:05:29,929 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:29,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683856417] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:05:29,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:05:29,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-15 00:05:29,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204995637] [2024-10-15 00:05:29,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:05:29,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-15 00:05:29,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:29,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-15 00:05:29,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-15 00:05:29,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-15 00:05:29,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 90 transitions, 404 flow. Second operand has 28 states, 28 states have (on average 21.071428571428573) internal successors, (590), 28 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:29,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:29,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-15 00:05:29,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:32,324 INFO L124 PetriNetUnfolderBase]: 15770/22461 cut-off events. [2024-10-15 00:05:32,325 INFO L125 PetriNetUnfolderBase]: For 6465/7147 co-relation queries the response was YES. [2024-10-15 00:05:32,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52591 conditions, 22461 events. 15770/22461 cut-off events. For 6465/7147 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 133449 event pairs, 12494 based on Foata normal form. 672/19236 useless extension candidates. Maximal degree in co-relation 52569. Up to 20684 conditions per place. [2024-10-15 00:05:32,520 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 45 selfloop transitions, 73 changer transitions 0/132 dead transitions. [2024-10-15 00:05:32,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 132 transitions, 941 flow [2024-10-15 00:05:32,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-15 00:05:32,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-15 00:05:32,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 641 transitions. [2024-10-15 00:05:32,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32017982017982016 [2024-10-15 00:05:32,523 INFO L175 Difference]: Start difference. First operand has 104 places, 90 transitions, 404 flow. Second operand 26 states and 641 transitions. [2024-10-15 00:05:32,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 132 transitions, 941 flow [2024-10-15 00:05:32,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 132 transitions, 903 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-15 00:05:32,534 INFO L231 Difference]: Finished difference. Result has 132 places, 132 transitions, 865 flow [2024-10-15 00:05:32,534 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=865, PETRI_PLACES=132, PETRI_TRANSITIONS=132} [2024-10-15 00:05:32,535 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 54 predicate places. [2024-10-15 00:05:32,535 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 132 transitions, 865 flow [2024-10-15 00:05:32,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 21.071428571428573) internal successors, (590), 28 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:32,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:32,536 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:05:32,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 00:05:32,736 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,SelfDestructingSolverStorable13 [2024-10-15 00:05:32,737 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-15 00:05:32,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:32,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1800214811, now seen corresponding path program 1 times [2024-10-15 00:05:32,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:32,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048205114] [2024-10-15 00:05:32,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:32,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:05:33,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:33,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048205114] [2024-10-15 00:05:33,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048205114] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:05:33,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042590132] [2024-10-15 00:05:33,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:33,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:33,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:05:33,312 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:05:33,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 00:05:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:33,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-15 00:05:33,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:05:33,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:05:33,686 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:05:33,812 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-15 00:05:33,813 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 26 treesize of output 13 [2024-10-15 00:05:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:05:34,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042590132] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:05:34,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:05:34,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-10-15 00:05:34,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927622117] [2024-10-15 00:05:34,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:05:34,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-15 00:05:34,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:34,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-15 00:05:34,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-10-15 00:05:34,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-15 00:05:34,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 132 transitions, 865 flow. Second operand has 20 states, 20 states have (on average 22.25) internal successors, (445), 20 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:34,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:34,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-15 00:05:34,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand