./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/parallel-parallel-sum-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:04:07,549 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:04:07,660 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:04:07,668 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:04:07,669 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:04:07,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:04:07,708 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:04:07,709 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:04:07,710 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:04:07,711 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:04:07,712 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:04:07,713 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:04:07,713 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:04:07,716 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:04:07,716 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:04:07,716 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:04:07,717 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:04:07,717 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:04:07,718 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:04:07,721 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:04:07,722 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:04:07,722 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:04:07,723 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:04:07,723 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:04:07,723 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:04:07,723 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:04:07,724 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:04:07,724 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:04:07,724 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:04:07,724 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:04:07,725 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:04:07,725 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:04:07,725 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:04:07,725 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:04:07,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:04:07,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:04:07,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:04:07,730 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:04:07,730 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:04:07,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:04:07,731 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:04:07,732 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:04:07,732 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:04:07,732 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:04:07,733 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 [2024-10-12 00:04:08,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:04:08,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:04:08,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:04:08,083 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:04:08,083 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:04:08,085 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-10-12 00:04:09,646 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:04:09,872 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:04:09,873 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-10-12 00:04:09,881 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9ac3255e9/7c2930a7284c4c0b93a8756e82577b90/FLAG5c0d02f19 [2024-10-12 00:04:09,895 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9ac3255e9/7c2930a7284c4c0b93a8756e82577b90 [2024-10-12 00:04:09,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:04:09,900 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:04:09,903 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:04:09,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:04:09,908 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:04:09,908 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:04:09" (1/1) ... [2024-10-12 00:04:09,909 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cb0e0c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:09, skipping insertion in model container [2024-10-12 00:04:09,909 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:04:09" (1/1) ... [2024-10-12 00:04:09,934 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:04:10,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:04:10,219 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:04:10,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:04:10,294 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:04:10,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:10 WrapperNode [2024-10-12 00:04:10,296 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:04:10,298 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:04:10,298 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:04:10,298 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:04:10,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:10" (1/1) ... [2024-10-12 00:04:10,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:10" (1/1) ... [2024-10-12 00:04:10,365 INFO L138 Inliner]: procedures = 26, calls = 54, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 305 [2024-10-12 00:04:10,366 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:04:10,367 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:04:10,368 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:04:10,368 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:04:10,380 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:10" (1/1) ... [2024-10-12 00:04:10,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:10" (1/1) ... [2024-10-12 00:04:10,389 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:10" (1/1) ... [2024-10-12 00:04:10,428 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-12 00:04:10,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:10" (1/1) ... [2024-10-12 00:04:10,431 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:10" (1/1) ... [2024-10-12 00:04:10,448 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:10" (1/1) ... [2024-10-12 00:04:10,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:10" (1/1) ... [2024-10-12 00:04:10,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:10" (1/1) ... [2024-10-12 00:04:10,463 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:10" (1/1) ... [2024-10-12 00:04:10,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:04:10,468 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:04:10,468 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:04:10,468 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:04:10,469 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:10" (1/1) ... [2024-10-12 00:04:10,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:04:10,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:04:10,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:04:10,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:04:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:04:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 00:04:10,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 00:04:10,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 00:04:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 00:04:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:04:10,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:04:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:04:10,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:04:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-12 00:04:10,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-12 00:04:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-12 00:04:10,565 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-12 00:04:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:04:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 00:04:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:04:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:04:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 00:04:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:04:10,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:04:10,571 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:04:10,737 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:04:10,743 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:04:11,329 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:04:11,329 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:04:11,926 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:04:11,928 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-12 00:04:11,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:04:11 BoogieIcfgContainer [2024-10-12 00:04:11,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:04:11,932 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:04:11,933 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:04:11,937 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:04:11,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:04:09" (1/3) ... [2024-10-12 00:04:11,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b8fcec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:04:11, skipping insertion in model container [2024-10-12 00:04:11,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:10" (2/3) ... [2024-10-12 00:04:11,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b8fcec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:04:11, skipping insertion in model container [2024-10-12 00:04:11,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:04:11" (3/3) ... [2024-10-12 00:04:11,942 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2024-10-12 00:04:11,962 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:04:11,962 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2024-10-12 00:04:11,962 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:04:12,113 INFO L143 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-10-12 00:04:12,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 89 transitions, 218 flow [2024-10-12 00:04:12,214 INFO L124 PetriNetUnfolderBase]: 9/82 cut-off events. [2024-10-12 00:04:12,214 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-12 00:04:12,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 82 events. 9/82 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 238 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 77. Up to 3 conditions per place. [2024-10-12 00:04:12,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 89 transitions, 218 flow [2024-10-12 00:04:12,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 80 transitions, 187 flow [2024-10-12 00:04:12,239 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:04:12,249 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;@7e0d2d74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:04:12,250 INFO L334 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2024-10-12 00:04:12,254 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:04:12,254 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-10-12 00:04:12,254 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:04:12,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:04:12,255 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-10-12 00:04:12,256 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:04:12,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:04:12,263 INFO L85 PathProgramCache]: Analyzing trace with hash 33422, now seen corresponding path program 1 times [2024-10-12 00:04:12,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:04:12,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969810692] [2024-10-12 00:04:12,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:12,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:04:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:12,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:04:12,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969810692] [2024-10-12 00:04:12,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969810692] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:04:12,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:04:12,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:04:12,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971527297] [2024-10-12 00:04:12,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:04:12,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:04:12,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:04:12,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:04:12,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:04:12,536 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 91 [2024-10-12 00:04:12,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 80 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-10-12 00:04:12,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:04:12,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 91 [2024-10-12 00:04:12,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:04:19,199 INFO L124 PetriNetUnfolderBase]: 38646/51872 cut-off events. [2024-10-12 00:04:19,199 INFO L125 PetriNetUnfolderBase]: For 1933/1933 co-relation queries the response was YES. [2024-10-12 00:04:19,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106411 conditions, 51872 events. 38646/51872 cut-off events. For 1933/1933 co-relation queries the response was YES. Maximal size of possible extension queue 1965. Compared 299551 event pairs, 35544 based on Foata normal form. 1/32860 useless extension candidates. Maximal degree in co-relation 106315. Up to 51843 conditions per place. [2024-10-12 00:04:19,664 INFO L140 encePairwiseOnDemand]: 80/91 looper letters, 62 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2024-10-12 00:04:19,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 70 transitions, 293 flow [2024-10-12 00:04:19,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:04:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:04:19,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-10-12 00:04:19,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3882783882783883 [2024-10-12 00:04:19,685 INFO L175 Difference]: Start difference. First operand has 84 places, 80 transitions, 187 flow. Second operand 3 states and 106 transitions. [2024-10-12 00:04:19,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 70 transitions, 293 flow [2024-10-12 00:04:19,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 70 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-12 00:04:19,737 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 152 flow [2024-10-12 00:04:19,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2024-10-12 00:04:19,744 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -12 predicate places. [2024-10-12 00:04:19,744 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 152 flow [2024-10-12 00:04:19,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-10-12 00:04:19,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:04:19,745 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-12 00:04:19,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:04:19,746 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:04:19,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:04:19,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1037105, now seen corresponding path program 1 times [2024-10-12 00:04:19,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:04:19,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511720886] [2024-10-12 00:04:19,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:19,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:04:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:19,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:19,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:04:19,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511720886] [2024-10-12 00:04:19,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511720886] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:04:19,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:04:19,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:04:19,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745206115] [2024-10-12 00:04:19,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:04:19,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:04:19,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:04:19,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:04:19,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:04:19,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 91 [2024-10-12 00:04:19,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-10-12 00:04:19,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:04:19,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 91 [2024-10-12 00:04:19,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:04:23,616 INFO L124 PetriNetUnfolderBase]: 31318/42066 cut-off events. [2024-10-12 00:04:23,616 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2024-10-12 00:04:23,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85260 conditions, 42066 events. 31318/42066 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 1492. Compared 236305 event pairs, 28618 based on Foata normal form. 0/27827 useless extension candidates. Maximal degree in co-relation 85254. Up to 42037 conditions per place. [2024-10-12 00:04:23,922 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 58 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2024-10-12 00:04:23,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 262 flow [2024-10-12 00:04:23,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:04:23,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:04:23,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-10-12 00:04:23,924 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3516483516483517 [2024-10-12 00:04:23,924 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 152 flow. Second operand 3 states and 96 transitions. [2024-10-12 00:04:23,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 262 flow [2024-10-12 00:04:23,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 261 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:04:23,930 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 145 flow [2024-10-12 00:04:23,931 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-10-12 00:04:23,932 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -15 predicate places. [2024-10-12 00:04:23,932 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 145 flow [2024-10-12 00:04:23,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-10-12 00:04:23,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:04:23,933 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-12 00:04:23,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 00:04:23,934 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:04:23,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:04:23,936 INFO L85 PathProgramCache]: Analyzing trace with hash 996691151, now seen corresponding path program 1 times [2024-10-12 00:04:23,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:04:23,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027774292] [2024-10-12 00:04:23,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:23,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:04:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:24,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:04:24,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027774292] [2024-10-12 00:04:24,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027774292] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:04:24,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:04:24,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:04:24,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692223623] [2024-10-12 00:04:24,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:04:24,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:04:24,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:04:24,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:04:24,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:04:24,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 91 [2024-10-12 00:04:24,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-10-12 00:04:24,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:04:24,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 91 [2024-10-12 00:04:24,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:04:27,317 INFO L124 PetriNetUnfolderBase]: 31319/42070 cut-off events. [2024-10-12 00:04:27,318 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2024-10-12 00:04:27,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85270 conditions, 42070 events. 31319/42070 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 1492. Compared 236357 event pairs, 28618 based on Foata normal form. 1/27831 useless extension candidates. Maximal degree in co-relation 85263. Up to 42041 conditions per place. [2024-10-12 00:04:27,589 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 60 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2024-10-12 00:04:27,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 279 flow [2024-10-12 00:04:27,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:04:27,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:04:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-10-12 00:04:27,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3021978021978022 [2024-10-12 00:04:27,592 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 145 flow. Second operand 4 states and 110 transitions. [2024-10-12 00:04:27,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 279 flow [2024-10-12 00:04:27,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 69 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:04:27,595 INFO L231 Difference]: Finished difference. Result has 73 places, 69 transitions, 173 flow [2024-10-12 00:04:27,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=73, PETRI_TRANSITIONS=69} [2024-10-12 00:04:27,596 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -11 predicate places. [2024-10-12 00:04:27,597 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 69 transitions, 173 flow [2024-10-12 00:04:27,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-10-12 00:04:27,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:04:27,597 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-12 00:04:27,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 00:04:27,598 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:04:27,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:04:27,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1318222748, now seen corresponding path program 1 times [2024-10-12 00:04:27,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:04:27,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558472846] [2024-10-12 00:04:27,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:27,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:04:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:27,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:27,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:04:27,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558472846] [2024-10-12 00:04:27,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558472846] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:04:27,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073739922] [2024-10-12 00:04:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:27,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:04:27,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:04:27,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:04:27,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:04:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:27,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:04:27,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:04:27,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:27,958 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:04:27,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073739922] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:04:27,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:04:27,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-12 00:04:27,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748825086] [2024-10-12 00:04:27,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:04:27,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:04:27,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:04:27,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:04:27,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:04:27,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 91 [2024-10-12 00:04:27,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-10-12 00:04:27,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:04:27,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 91 [2024-10-12 00:04:27,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:04:31,339 INFO L124 PetriNetUnfolderBase]: 31319/42069 cut-off events. [2024-10-12 00:04:31,339 INFO L125 PetriNetUnfolderBase]: For 257/257 co-relation queries the response was YES. [2024-10-12 00:04:31,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85281 conditions, 42069 events. 31319/42069 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 1498. Compared 236457 event pairs, 28618 based on Foata normal form. 1/27831 useless extension candidates. Maximal degree in co-relation 85272. Up to 42036 conditions per place. [2024-10-12 00:04:31,686 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 56 selfloop transitions, 7 changer transitions 0/68 dead transitions. [2024-10-12 00:04:31,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 68 transitions, 295 flow [2024-10-12 00:04:31,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:04:31,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:04:31,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-10-12 00:04:31,691 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.23809523809523808 [2024-10-12 00:04:31,692 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 173 flow. Second operand 6 states and 130 transitions. [2024-10-12 00:04:31,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 68 transitions, 295 flow [2024-10-12 00:04:31,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 68 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:04:31,697 INFO L231 Difference]: Finished difference. Result has 76 places, 68 transitions, 180 flow [2024-10-12 00:04:31,697 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2024-10-12 00:04:31,698 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -8 predicate places. [2024-10-12 00:04:31,698 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 180 flow [2024-10-12 00:04:31,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-10-12 00:04:31,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:04:31,698 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-10-12 00:04:31,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 00:04:31,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:04:31,905 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:04:31,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:04:31,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2084766703, now seen corresponding path program 1 times [2024-10-12 00:04:31,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:04:31,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041931223] [2024-10-12 00:04:31,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:31,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:04:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:32,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:32,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:04:32,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041931223] [2024-10-12 00:04:32,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041931223] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:04:32,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027648330] [2024-10-12 00:04:32,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:32,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:04:32,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:04:32,139 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:04:32,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:04:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:32,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:04:32,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:04:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:32,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:04:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:32,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027648330] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:04:32,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:04:32,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-12 00:04:32,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944579602] [2024-10-12 00:04:32,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:04:32,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:04:32,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:04:32,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:04:32,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:04:32,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 91 [2024-10-12 00:04:32,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 68 transitions, 180 flow. Second operand has 12 states, 12 states have (on average 12.166666666666666) internal successors, (146), 12 states have internal predecessors, (146), 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) [2024-10-12 00:04:32,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:04:32,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 91 [2024-10-12 00:04:32,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:04:36,034 INFO L124 PetriNetUnfolderBase]: 31322/42081 cut-off events. [2024-10-12 00:04:36,034 INFO L125 PetriNetUnfolderBase]: For 274/274 co-relation queries the response was YES. [2024-10-12 00:04:36,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85325 conditions, 42081 events. 31322/42081 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 1498. Compared 236513 event pairs, 28618 based on Foata normal form. 3/27843 useless extension candidates. Maximal degree in co-relation 85316. Up to 42043 conditions per place. [2024-10-12 00:04:36,385 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 59 selfloop transitions, 13 changer transitions 0/77 dead transitions. [2024-10-12 00:04:36,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 77 transitions, 378 flow [2024-10-12 00:04:36,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:04:36,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:04:36,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-10-12 00:04:36,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2032967032967033 [2024-10-12 00:04:36,388 INFO L175 Difference]: Start difference. First operand has 76 places, 68 transitions, 180 flow. Second operand 10 states and 185 transitions. [2024-10-12 00:04:36,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 77 transitions, 378 flow [2024-10-12 00:04:36,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 332 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-12 00:04:36,391 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 232 flow [2024-10-12 00:04:36,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=232, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2024-10-12 00:04:36,392 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2024-10-12 00:04:36,393 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 232 flow [2024-10-12 00:04:36,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.166666666666666) internal successors, (146), 12 states have internal predecessors, (146), 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) [2024-10-12 00:04:36,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:04:36,394 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:04:36,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 00:04:36,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:04:36,598 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:04:36,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:04:36,599 INFO L85 PathProgramCache]: Analyzing trace with hash 353947523, now seen corresponding path program 1 times [2024-10-12 00:04:36,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:04:36,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720978159] [2024-10-12 00:04:36,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:36,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:04:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:36,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:36,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:04:36,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720978159] [2024-10-12 00:04:36,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720978159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:04:36,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:04:36,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:04:36,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602074981] [2024-10-12 00:04:36,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:04:36,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:04:36,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:04:36,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:04:36,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:04:36,702 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 91 [2024-10-12 00:04:36,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-10-12 00:04:36,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:04:36,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 91 [2024-10-12 00:04:36,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:04:41,306 INFO L124 PetriNetUnfolderBase]: 44938/60299 cut-off events. [2024-10-12 00:04:41,307 INFO L125 PetriNetUnfolderBase]: For 508/508 co-relation queries the response was YES. [2024-10-12 00:04:41,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121933 conditions, 60299 events. 44938/60299 cut-off events. For 508/508 co-relation queries the response was YES. Maximal size of possible extension queue 1938. Compared 353239 event pairs, 28644 based on Foata normal form. 0/41192 useless extension candidates. Maximal degree in co-relation 121922. Up to 42056 conditions per place. [2024-10-12 00:04:41,778 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 113 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2024-10-12 00:04:41,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 121 transitions, 557 flow [2024-10-12 00:04:41,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:04:41,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:04:41,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-10-12 00:04:41,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-10-12 00:04:41,780 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 232 flow. Second operand 3 states and 143 transitions. [2024-10-12 00:04:41,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 121 transitions, 557 flow [2024-10-12 00:04:41,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 121 transitions, 546 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-12 00:04:41,784 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 233 flow [2024-10-12 00:04:41,784 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2024-10-12 00:04:41,785 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2024-10-12 00:04:41,785 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 233 flow [2024-10-12 00:04:41,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-10-12 00:04:41,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:04:41,786 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:04:41,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:04:41,786 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:04:41,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:04:41,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2098893595, now seen corresponding path program 1 times [2024-10-12 00:04:41,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:04:41,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745279778] [2024-10-12 00:04:41,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:41,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:04:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:41,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:41,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:04:41,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745279778] [2024-10-12 00:04:41,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745279778] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:04:41,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:04:41,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:04:41,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050622916] [2024-10-12 00:04:41,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:04:41,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:04:41,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:04:41,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:04:41,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:04:41,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 91 [2024-10-12 00:04:41,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-10-12 00:04:41,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:04:41,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 91 [2024-10-12 00:04:41,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:04:47,445 INFO L124 PetriNetUnfolderBase]: 55353/74399 cut-off events. [2024-10-12 00:04:47,445 INFO L125 PetriNetUnfolderBase]: For 5187/5187 co-relation queries the response was YES. [2024-10-12 00:04:47,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155104 conditions, 74399 events. 55353/74399 cut-off events. For 5187/5187 co-relation queries the response was YES. Maximal size of possible extension queue 2369. Compared 444906 event pairs, 28908 based on Foata normal form. 0/52630 useless extension candidates. Maximal degree in co-relation 155091. Up to 60620 conditions per place. [2024-10-12 00:04:48,019 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 107 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2024-10-12 00:04:48,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 116 transitions, 547 flow [2024-10-12 00:04:48,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:04:48,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:04:48,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-10-12 00:04:48,022 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5018315018315018 [2024-10-12 00:04:48,022 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 233 flow. Second operand 3 states and 137 transitions. [2024-10-12 00:04:48,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 116 transitions, 547 flow [2024-10-12 00:04:48,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 116 transitions, 543 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:04:48,047 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 252 flow [2024-10-12 00:04:48,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2024-10-12 00:04:48,049 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2024-10-12 00:04:48,049 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 252 flow [2024-10-12 00:04:48,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-10-12 00:04:48,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:04:48,049 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:04:48,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 00:04:48,050 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-10-12 00:04:48,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:04:48,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1912527504, now seen corresponding path program 1 times [2024-10-12 00:04:48,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:04:48,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658022850] [2024-10-12 00:04:48,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:48,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:04:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:48,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:48,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:04:48,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658022850] [2024-10-12 00:04:48,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658022850] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:04:48,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:04:48,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:04:48,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125793794] [2024-10-12 00:04:48,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:04:48,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:04:48,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:04:48,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:04:48,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:04:48,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 91 [2024-10-12 00:04:48,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 252 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-10-12 00:04:48,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:04:48,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 91 [2024-10-12 00:04:48,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand