./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.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 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:11:30,972 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:11:31,038 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:11:31,042 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:11:31,042 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:11:31,059 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:11:31,059 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:11:31,059 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:11:31,060 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:11:31,060 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:11:31,060 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:11:31,060 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:11:31,061 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:11:31,061 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:11:31,061 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:11:31,061 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:11:31,061 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:11:31,062 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:11:31,062 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:11:31,062 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:11:31,062 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:11:31,063 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:11:31,063 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:11:31,063 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:11:31,063 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:11:31,064 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:11:31,064 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:11:31,064 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:11:31,064 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:11:31,064 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:11:31,065 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:11:31,065 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:11:31,065 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:11:31,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:11:31,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:11:31,065 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:11:31,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:11:31,066 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:11:31,066 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:11:31,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:11:31,066 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:11:31,066 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:11:31,066 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:11:31,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:11:31,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2024-11-09 15:11:31,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:11:31,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:11:31,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:11:31,274 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:11:31,274 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:11:31,275 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-11-09 15:11:31,768 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:11:33,271 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:11:33,272 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-11-09 15:11:33,278 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/101ba0e51/bef84db712174641a19b67ce8852655b/FLAGa43579e84 [2024-11-09 15:11:33,290 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/101ba0e51/bef84db712174641a19b67ce8852655b [2024-11-09 15:11:33,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:11:33,294 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:11:33,295 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:11:33,295 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:11:33,299 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:11:33,299 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:11:33" (1/1) ... [2024-11-09 15:11:33,300 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe6bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:33, skipping insertion in model container [2024-11-09 15:11:33,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:11:33" (1/1) ... [2024-11-09 15:11:33,318 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:11:33,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:11:33,545 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:11:33,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:11:33,595 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:11:33,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:33 WrapperNode [2024-11-09 15:11:33,597 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:11:33,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:11:33,599 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:11:33,599 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:11:33,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:33" (1/1) ... [2024-11-09 15:11:33,612 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:33" (1/1) ... [2024-11-09 15:11:33,640 INFO L138 Inliner]: procedures = 24, calls = 49, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 349 [2024-11-09 15:11:33,640 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:11:33,641 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:11:33,641 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:11:33,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:11:33,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:33" (1/1) ... [2024-11-09 15:11:33,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:33" (1/1) ... [2024-11-09 15:11:33,654 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:33" (1/1) ... [2024-11-09 15:11:33,670 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-09 15:11:33,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:33" (1/1) ... [2024-11-09 15:11:33,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:33" (1/1) ... [2024-11-09 15:11:33,680 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:33" (1/1) ... [2024-11-09 15:11:33,685 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:33" (1/1) ... [2024-11-09 15:11:33,686 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:33" (1/1) ... [2024-11-09 15:11:33,688 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:33" (1/1) ... [2024-11-09 15:11:33,690 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:11:33,691 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:11:33,691 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:11:33,691 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:11:33,692 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:33" (1/1) ... [2024-11-09 15:11:33,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:11:33,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:11:33,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 15:11:33,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 15:11:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:11:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:11:33,753 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:11:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:11:33,753 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:11:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 15:11:33,753 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 15:11:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:11:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:11:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:11:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:11:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 15:11:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 15:11:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:11:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:11:33,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:11:33,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:11:33,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:11:33,755 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:11:33,872 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:11:33,874 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:11:34,266 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:11:34,266 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:11:34,567 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:11:34,567 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-09 15:11:34,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:11:34 BoogieIcfgContainer [2024-11-09 15:11:34,568 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:11:34,569 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:11:34,569 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:11:34,572 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:11:34,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:11:33" (1/3) ... [2024-11-09 15:11:34,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f013fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:11:34, skipping insertion in model container [2024-11-09 15:11:34,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:33" (2/3) ... [2024-11-09 15:11:34,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f013fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:11:34, skipping insertion in model container [2024-11-09 15:11:34,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:11:34" (3/3) ... [2024-11-09 15:11:34,575 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2024-11-09 15:11:34,588 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:11:34,588 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-11-09 15:11:34,588 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:11:34,659 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 15:11:34,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 92 transitions, 205 flow [2024-11-09 15:11:34,713 INFO L124 PetriNetUnfolderBase]: 10/89 cut-off events. [2024-11-09 15:11:34,714 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 15:11:34,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 89 events. 10/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 340 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 69. Up to 3 conditions per place. [2024-11-09 15:11:34,717 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 92 transitions, 205 flow [2024-11-09 15:11:34,720 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 87 transitions, 189 flow [2024-11-09 15:11:34,729 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:11:34,734 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;@4e3e21c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:11:34,735 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-11-09 15:11:34,737 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:11:34,738 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:11:34,738 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:11:34,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:34,738 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:11:34,739 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:11:34,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:34,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1057236, now seen corresponding path program 1 times [2024-11-09 15:11:34,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:34,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680467316] [2024-11-09 15:11:34,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:34,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:34,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:34,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:34,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680467316] [2024-11-09 15:11:34,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680467316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:34,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:11:34,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:11:35,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784590491] [2024-11-09 15:11:35,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:35,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:11:35,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:35,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:11:35,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:11:35,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-11-09 15:11:35,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 189 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) [2024-11-09 15:11:35,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:35,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-11-09 15:11:35,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:36,464 INFO L124 PetriNetUnfolderBase]: 9250/15264 cut-off events. [2024-11-09 15:11:36,464 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2024-11-09 15:11:36,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28354 conditions, 15264 events. 9250/15264 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 118718 event pairs, 8468 based on Foata normal form. 738/9533 useless extension candidates. Maximal degree in co-relation 27581. Up to 12592 conditions per place. [2024-11-09 15:11:36,562 INFO L140 encePairwiseOnDemand]: 68/92 looper letters, 58 selfloop transitions, 10 changer transitions 0/88 dead transitions. [2024-11-09 15:11:36,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 327 flow [2024-11-09 15:11:36,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:11:36,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:11:36,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 174 transitions. [2024-11-09 15:11:36,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2024-11-09 15:11:36,574 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 189 flow. Second operand 4 states and 174 transitions. [2024-11-09 15:11:36,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 327 flow [2024-11-09 15:11:36,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 318 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:11:36,588 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 252 flow [2024-11-09 15:11:36,591 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2024-11-09 15:11:36,595 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, -5 predicate places. [2024-11-09 15:11:36,596 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 252 flow [2024-11-09 15:11:36,596 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) [2024-11-09 15:11:36,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:36,596 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:11:36,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:11:36,596 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:11:36,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:36,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1432422099, now seen corresponding path program 1 times [2024-11-09 15:11:36,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:36,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563226048] [2024-11-09 15:11:36,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:36,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:36,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:36,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563226048] [2024-11-09 15:11:36,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563226048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:11:36,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768984331] [2024-11-09 15:11:36,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:36,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:11:36,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:11:36,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:11:36,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:11:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:36,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:11:36,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:11:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:36,830 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:11:36,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768984331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:36,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:11:36,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:11:36,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405650645] [2024-11-09 15:11:36,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:36,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:11:36,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:36,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:11:36,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:11:36,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-11-09 15:11:36,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:36,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:36,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-11-09 15:11:36,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:37,969 INFO L124 PetriNetUnfolderBase]: 9250/15261 cut-off events. [2024-11-09 15:11:37,969 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-11-09 15:11:37,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28252 conditions, 15261 events. 9250/15261 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 118576 event pairs, 8468 based on Foata normal form. 3/8800 useless extension candidates. Maximal degree in co-relation 28179. Up to 12577 conditions per place. [2024-11-09 15:11:38,047 INFO L140 encePairwiseOnDemand]: 79/92 looper letters, 48 selfloop transitions, 17 changer transitions 0/85 dead transitions. [2024-11-09 15:11:38,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 370 flow [2024-11-09 15:11:38,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:11:38,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:11:38,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-11-09 15:11:38,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37318840579710144 [2024-11-09 15:11:38,049 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 252 flow. Second operand 6 states and 206 transitions. [2024-11-09 15:11:38,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 370 flow [2024-11-09 15:11:38,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 85 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:11:38,053 INFO L231 Difference]: Finished difference. Result has 84 places, 85 transitions, 274 flow [2024-11-09 15:11:38,053 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=84, PETRI_TRANSITIONS=85} [2024-11-09 15:11:38,054 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, -3 predicate places. [2024-11-09 15:11:38,054 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 85 transitions, 274 flow [2024-11-09 15:11:38,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:38,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:38,055 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:11:38,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 15:11:38,255 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 [2024-11-09 15:11:38,256 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:11:38,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:38,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1455413192, now seen corresponding path program 1 times [2024-11-09 15:11:38,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:38,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017821046] [2024-11-09 15:11:38,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:38,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:38,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:38,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017821046] [2024-11-09 15:11:38,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017821046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:11:38,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923235667] [2024-11-09 15:11:38,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:38,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:11:38,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:11:38,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:11:38,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:11:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:38,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:11:38,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:11:38,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:38,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:11:38,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:38,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923235667] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:11:38,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:11:38,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:11:38,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135420810] [2024-11-09 15:11:38,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:11:38,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:11:38,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:38,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:11:38,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:11:38,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-11-09 15:11:38,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 85 transitions, 274 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:38,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:38,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-11-09 15:11:38,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:39,795 INFO L124 PetriNetUnfolderBase]: 9259/15297 cut-off events. [2024-11-09 15:11:39,795 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-11-09 15:11:39,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28393 conditions, 15297 events. 9259/15297 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 118952 event pairs, 8468 based on Foata normal form. 9/8842 useless extension candidates. Maximal degree in co-relation 28181. Up to 12592 conditions per place. [2024-11-09 15:11:39,899 INFO L140 encePairwiseOnDemand]: 79/92 looper letters, 55 selfloop transitions, 37 changer transitions 0/112 dead transitions. [2024-11-09 15:11:39,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 112 transitions, 632 flow [2024-11-09 15:11:39,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:11:39,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:11:39,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2024-11-09 15:11:39,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35978260869565215 [2024-11-09 15:11:39,903 INFO L175 Difference]: Start difference. First operand has 84 places, 85 transitions, 274 flow. Second operand 10 states and 331 transitions. [2024-11-09 15:11:39,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 112 transitions, 632 flow [2024-11-09 15:11:39,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 112 transitions, 549 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-09 15:11:39,907 INFO L231 Difference]: Finished difference. Result has 91 places, 112 transitions, 489 flow [2024-11-09 15:11:39,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=489, PETRI_PLACES=91, PETRI_TRANSITIONS=112} [2024-11-09 15:11:39,909 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 4 predicate places. [2024-11-09 15:11:39,909 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 112 transitions, 489 flow [2024-11-09 15:11:39,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:39,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:39,909 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:11:40,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 15:11:40,233 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 [2024-11-09 15:11:40,233 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:11:40,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:40,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2087349364, now seen corresponding path program 1 times [2024-11-09 15:11:40,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:40,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807564446] [2024-11-09 15:11:40,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:40,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:40,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:40,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:40,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807564446] [2024-11-09 15:11:40,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807564446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:40,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:11:40,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:11:40,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27166658] [2024-11-09 15:11:40,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:40,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:11:40,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:40,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:11:40,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:11:40,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-11-09 15:11:40,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 112 transitions, 489 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:40,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:40,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-11-09 15:11:40,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:41,292 INFO L124 PetriNetUnfolderBase]: 9487/15753 cut-off events. [2024-11-09 15:11:41,292 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2024-11-09 15:11:41,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29341 conditions, 15753 events. 9487/15753 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 122271 event pairs, 8675 based on Foata normal form. 109/9457 useless extension candidates. Maximal degree in co-relation 29183. Up to 12618 conditions per place. [2024-11-09 15:11:41,366 INFO L140 encePairwiseOnDemand]: 80/92 looper letters, 126 selfloop transitions, 10 changer transitions 1/160 dead transitions. [2024-11-09 15:11:41,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 160 transitions, 1015 flow [2024-11-09 15:11:41,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:11:41,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:11:41,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 236 transitions. [2024-11-09 15:11:41,367 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5130434782608696 [2024-11-09 15:11:41,367 INFO L175 Difference]: Start difference. First operand has 91 places, 112 transitions, 489 flow. Second operand 5 states and 236 transitions. [2024-11-09 15:11:41,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 160 transitions, 1015 flow [2024-11-09 15:11:41,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 160 transitions, 955 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-09 15:11:41,371 INFO L231 Difference]: Finished difference. Result has 95 places, 119 transitions, 554 flow [2024-11-09 15:11:41,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=554, PETRI_PLACES=95, PETRI_TRANSITIONS=119} [2024-11-09 15:11:41,372 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 8 predicate places. [2024-11-09 15:11:41,372 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 119 transitions, 554 flow [2024-11-09 15:11:41,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:41,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:41,372 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:11:41,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:11:41,373 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:11:41,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:41,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1121202475, now seen corresponding path program 1 times [2024-11-09 15:11:41,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:41,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897570313] [2024-11-09 15:11:41,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:41,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:41,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:41,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:41,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897570313] [2024-11-09 15:11:41,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897570313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:11:41,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608335243] [2024-11-09 15:11:41,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:41,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:11:41,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:11:41,517 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:11:41,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:11:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:41,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:11:41,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:11:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:11:41,613 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:11:41,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608335243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:41,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:11:41,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-09 15:11:41,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027265616] [2024-11-09 15:11:41,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:41,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:11:41,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:41,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:11:41,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 15:11:41,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-11-09 15:11:41,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 119 transitions, 554 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:41,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:41,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-11-09 15:11:41,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:42,292 INFO L124 PetriNetUnfolderBase]: 8079/13391 cut-off events. [2024-11-09 15:11:42,293 INFO L125 PetriNetUnfolderBase]: For 975/975 co-relation queries the response was YES. [2024-11-09 15:11:42,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25747 conditions, 13391 events. 8079/13391 cut-off events. For 975/975 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 100114 event pairs, 7346 based on Foata normal form. 0/8281 useless extension candidates. Maximal degree in co-relation 25591. Up to 11060 conditions per place. [2024-11-09 15:11:42,355 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 93 selfloop transitions, 1 changer transitions 0/117 dead transitions. [2024-11-09 15:11:42,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 117 transitions, 734 flow [2024-11-09 15:11:42,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:11:42,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:11:42,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-11-09 15:11:42,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-11-09 15:11:42,357 INFO L175 Difference]: Start difference. First operand has 95 places, 119 transitions, 554 flow. Second operand 3 states and 140 transitions. [2024-11-09 15:11:42,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 117 transitions, 734 flow [2024-11-09 15:11:42,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 117 transitions, 730 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 15:11:42,361 INFO L231 Difference]: Finished difference. Result has 94 places, 117 transitions, 544 flow [2024-11-09 15:11:42,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=544, PETRI_PLACES=94, PETRI_TRANSITIONS=117} [2024-11-09 15:11:42,362 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 7 predicate places. [2024-11-09 15:11:42,362 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 117 transitions, 544 flow [2024-11-09 15:11:42,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:42,363 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:42,363 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:11:42,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 15:11:42,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:11:42,564 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:11:42,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:42,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1380648729, now seen corresponding path program 1 times [2024-11-09 15:11:42,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:42,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963559154] [2024-11-09 15:11:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:42,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:42,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:42,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963559154] [2024-11-09 15:11:42,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963559154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:42,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:11:42,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:11:42,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506349630] [2024-11-09 15:11:42,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:42,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:11:42,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:42,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:11:42,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:11:42,612 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-11-09 15:11:42,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 117 transitions, 544 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:42,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:42,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-11-09 15:11:42,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:43,448 INFO L124 PetriNetUnfolderBase]: 7412/11897 cut-off events. [2024-11-09 15:11:43,448 INFO L125 PetriNetUnfolderBase]: For 1052/1052 co-relation queries the response was YES. [2024-11-09 15:11:43,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23900 conditions, 11897 events. 7412/11897 cut-off events. For 1052/1052 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 81871 event pairs, 2706 based on Foata normal form. 192/7543 useless extension candidates. Maximal degree in co-relation 23884. Up to 8609 conditions per place. [2024-11-09 15:11:43,505 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 117 selfloop transitions, 2 changer transitions 1/143 dead transitions. [2024-11-09 15:11:43,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 143 transitions, 845 flow [2024-11-09 15:11:43,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:11:43,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:11:43,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-11-09 15:11:43,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6014492753623188 [2024-11-09 15:11:43,506 INFO L175 Difference]: Start difference. First operand has 94 places, 117 transitions, 544 flow. Second operand 3 states and 166 transitions. [2024-11-09 15:11:43,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 143 transitions, 845 flow [2024-11-09 15:11:43,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 143 transitions, 844 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:11:43,510 INFO L231 Difference]: Finished difference. Result has 96 places, 117 transitions, 548 flow [2024-11-09 15:11:43,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=548, PETRI_PLACES=96, PETRI_TRANSITIONS=117} [2024-11-09 15:11:43,511 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2024-11-09 15:11:43,511 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 117 transitions, 548 flow [2024-11-09 15:11:43,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:43,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:43,511 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:11:43,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 15:11:43,512 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:11:43,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:43,512 INFO L85 PathProgramCache]: Analyzing trace with hash 217816679, now seen corresponding path program 1 times [2024-11-09 15:11:43,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:43,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866819194] [2024-11-09 15:11:43,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:43,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:11:43,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:43,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866819194] [2024-11-09 15:11:43,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866819194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:43,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:11:43,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:11:43,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262527270] [2024-11-09 15:11:43,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:43,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:11:43,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:43,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:11:43,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:11:43,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-11-09 15:11:43,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 117 transitions, 548 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:43,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:43,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-11-09 15:11:43,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:45,440 INFO L124 PetriNetUnfolderBase]: 13317/21454 cut-off events. [2024-11-09 15:11:45,440 INFO L125 PetriNetUnfolderBase]: For 2742/2754 co-relation queries the response was YES. [2024-11-09 15:11:45,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44274 conditions, 21454 events. 13317/21454 cut-off events. For 2742/2754 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 160832 event pairs, 9148 based on Foata normal form. 0/14350 useless extension candidates. Maximal degree in co-relation 44256. Up to 9992 conditions per place. [2024-11-09 15:11:45,585 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 130 selfloop transitions, 2 changer transitions 0/155 dead transitions. [2024-11-09 15:11:45,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 155 transitions, 908 flow [2024-11-09 15:11:45,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:11:45,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:11:45,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2024-11-09 15:11:45,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2024-11-09 15:11:45,586 INFO L175 Difference]: Start difference. First operand has 96 places, 117 transitions, 548 flow. Second operand 3 states and 177 transitions. [2024-11-09 15:11:45,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 155 transitions, 908 flow [2024-11-09 15:11:45,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 155 transitions, 905 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:11:45,590 INFO L231 Difference]: Finished difference. Result has 98 places, 118 transitions, 560 flow [2024-11-09 15:11:45,591 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=560, PETRI_PLACES=98, PETRI_TRANSITIONS=118} [2024-11-09 15:11:45,591 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 11 predicate places. [2024-11-09 15:11:45,591 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 118 transitions, 560 flow [2024-11-09 15:11:45,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:45,591 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:45,592 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:11:45,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 15:11:45,592 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:11:45,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:45,592 INFO L85 PathProgramCache]: Analyzing trace with hash 217816677, now seen corresponding path program 1 times [2024-11-09 15:11:45,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:45,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850066615] [2024-11-09 15:11:45,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:45,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:45,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:11:45,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:45,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850066615] [2024-11-09 15:11:45,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850066615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:45,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:11:45,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:11:45,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671626139] [2024-11-09 15:11:45,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:45,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:11:45,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:45,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:11:45,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:11:45,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-11-09 15:11:45,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 118 transitions, 560 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:45,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:45,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-11-09 15:11:45,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:46,897 INFO L124 PetriNetUnfolderBase]: 12833/20569 cut-off events. [2024-11-09 15:11:46,897 INFO L125 PetriNetUnfolderBase]: For 3687/3717 co-relation queries the response was YES. [2024-11-09 15:11:46,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43543 conditions, 20569 events. 12833/20569 cut-off events. For 3687/3717 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 150496 event pairs, 6590 based on Foata normal form. 0/14467 useless extension candidates. Maximal degree in co-relation 43524. Up to 17452 conditions per place. [2024-11-09 15:11:47,011 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 97 selfloop transitions, 9 changer transitions 0/129 dead transitions. [2024-11-09 15:11:47,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 129 transitions, 806 flow [2024-11-09 15:11:47,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:11:47,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:11:47,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-11-09 15:11:47,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-11-09 15:11:47,012 INFO L175 Difference]: Start difference. First operand has 98 places, 118 transitions, 560 flow. Second operand 3 states and 150 transitions. [2024-11-09 15:11:47,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 129 transitions, 806 flow [2024-11-09 15:11:47,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 129 transitions, 803 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:11:47,016 INFO L231 Difference]: Finished difference. Result has 99 places, 120 transitions, 601 flow [2024-11-09 15:11:47,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=601, PETRI_PLACES=99, PETRI_TRANSITIONS=120} [2024-11-09 15:11:47,017 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 12 predicate places. [2024-11-09 15:11:47,017 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 120 transitions, 601 flow [2024-11-09 15:11:47,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:47,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:47,017 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:11:47,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 15:11:47,018 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:11:47,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:47,018 INFO L85 PathProgramCache]: Analyzing trace with hash 217816678, now seen corresponding path program 1 times [2024-11-09 15:11:47,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:47,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291772425] [2024-11-09 15:11:47,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:47,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:47,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:47,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:47,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291772425] [2024-11-09 15:11:47,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291772425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:11:47,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251654811] [2024-11-09 15:11:47,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:47,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:11:47,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:11:47,102 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:11:47,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:11:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:47,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:11:47,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:11:47,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:11:47,214 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:11:47,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251654811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:47,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:11:47,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-11-09 15:11:47,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315925184] [2024-11-09 15:11:47,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:47,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:11:47,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:47,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:11:47,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 15:11:47,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-11-09 15:11:47,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 120 transitions, 601 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:47,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:47,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-11-09 15:11:47,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:48,511 INFO L124 PetriNetUnfolderBase]: 13695/21447 cut-off events. [2024-11-09 15:11:48,511 INFO L125 PetriNetUnfolderBase]: For 8556/8640 co-relation queries the response was YES. [2024-11-09 15:11:48,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48843 conditions, 21447 events. 13695/21447 cut-off events. For 8556/8640 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 153527 event pairs, 6720 based on Foata normal form. 386/15855 useless extension candidates. Maximal degree in co-relation 48822. Up to 10848 conditions per place. [2024-11-09 15:11:48,612 INFO L140 encePairwiseOnDemand]: 84/92 looper letters, 109 selfloop transitions, 13 changer transitions 0/145 dead transitions. [2024-11-09 15:11:48,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 145 transitions, 918 flow [2024-11-09 15:11:48,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:11:48,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:11:48,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2024-11-09 15:11:48,613 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-11-09 15:11:48,613 INFO L175 Difference]: Start difference. First operand has 99 places, 120 transitions, 601 flow. Second operand 4 states and 191 transitions. [2024-11-09 15:11:48,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 145 transitions, 918 flow [2024-11-09 15:11:48,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 145 transitions, 909 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:11:48,618 INFO L231 Difference]: Finished difference. Result has 102 places, 121 transitions, 657 flow [2024-11-09 15:11:48,619 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=657, PETRI_PLACES=102, PETRI_TRANSITIONS=121} [2024-11-09 15:11:48,619 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 15 predicate places. [2024-11-09 15:11:48,619 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 121 transitions, 657 flow [2024-11-09 15:11:48,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:48,620 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:48,620 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:11:48,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 15:11:48,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:11:48,820 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:11:48,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:48,821 INFO L85 PathProgramCache]: Analyzing trace with hash -39202132, now seen corresponding path program 1 times [2024-11-09 15:11:48,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:48,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073328523] [2024-11-09 15:11:48,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:48,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:11:48,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:48,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073328523] [2024-11-09 15:11:48,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073328523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:48,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:11:48,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:11:48,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107460078] [2024-11-09 15:11:48,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:48,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:11:48,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:48,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:11:48,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:11:48,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-11-09 15:11:48,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 121 transitions, 657 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:48,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:48,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-11-09 15:11:48,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:49,638 INFO L124 PetriNetUnfolderBase]: 8456/13564 cut-off events. [2024-11-09 15:11:49,638 INFO L125 PetriNetUnfolderBase]: For 10891/10945 co-relation queries the response was YES. [2024-11-09 15:11:49,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33130 conditions, 13564 events. 8456/13564 cut-off events. For 10891/10945 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 93305 event pairs, 4540 based on Foata normal form. 58/9824 useless extension candidates. Maximal degree in co-relation 33106. Up to 11149 conditions per place. [2024-11-09 15:11:49,714 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 109 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2024-11-09 15:11:49,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 136 transitions, 926 flow [2024-11-09 15:11:49,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:11:49,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:11:49,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2024-11-09 15:11:49,717 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5579710144927537 [2024-11-09 15:11:49,717 INFO L175 Difference]: Start difference. First operand has 102 places, 121 transitions, 657 flow. Second operand 3 states and 154 transitions. [2024-11-09 15:11:49,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 136 transitions, 926 flow [2024-11-09 15:11:49,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 136 transitions, 925 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:11:49,724 INFO L231 Difference]: Finished difference. Result has 104 places, 121 transitions, 676 flow [2024-11-09 15:11:49,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=676, PETRI_PLACES=104, PETRI_TRANSITIONS=121} [2024-11-09 15:11:49,724 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 17 predicate places. [2024-11-09 15:11:49,724 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 121 transitions, 676 flow [2024-11-09 15:11:49,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:49,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:49,725 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:11:49,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 15:11:49,725 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:11:49,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:49,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1837615395, now seen corresponding path program 1 times [2024-11-09 15:11:49,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:49,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744721820] [2024-11-09 15:11:49,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:49,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:11:49,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:49,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744721820] [2024-11-09 15:11:49,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744721820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:49,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:11:49,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:11:49,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247491657] [2024-11-09 15:11:49,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:49,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:11:49,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:49,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:11:49,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:11:49,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-11-09 15:11:49,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 121 transitions, 676 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:49,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:49,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-11-09 15:11:49,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:51,007 INFO L124 PetriNetUnfolderBase]: 11595/18556 cut-off events. [2024-11-09 15:11:51,007 INFO L125 PetriNetUnfolderBase]: For 19115/19211 co-relation queries the response was YES. [2024-11-09 15:11:51,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47898 conditions, 18556 events. 11595/18556 cut-off events. For 19115/19211 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 130861 event pairs, 9495 based on Foata normal form. 305/13964 useless extension candidates. Maximal degree in co-relation 47872. Up to 11655 conditions per place. [2024-11-09 15:11:51,093 INFO L140 encePairwiseOnDemand]: 81/92 looper letters, 122 selfloop transitions, 12 changer transitions 0/157 dead transitions. [2024-11-09 15:11:51,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 157 transitions, 1121 flow [2024-11-09 15:11:51,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:11:51,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:11:51,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 205 transitions. [2024-11-09 15:11:51,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5570652173913043 [2024-11-09 15:11:51,094 INFO L175 Difference]: Start difference. First operand has 104 places, 121 transitions, 676 flow. Second operand 4 states and 205 transitions. [2024-11-09 15:11:51,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 157 transitions, 1121 flow [2024-11-09 15:11:51,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 157 transitions, 1114 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:11:51,101 INFO L231 Difference]: Finished difference. Result has 107 places, 121 transitions, 713 flow [2024-11-09 15:11:51,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=713, PETRI_PLACES=107, PETRI_TRANSITIONS=121} [2024-11-09 15:11:51,101 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 20 predicate places. [2024-11-09 15:11:51,101 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 121 transitions, 713 flow [2024-11-09 15:11:51,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:51,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:51,102 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-09 15:11:51,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 15:11:51,102 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:11:51,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:51,102 INFO L85 PathProgramCache]: Analyzing trace with hash 625763751, now seen corresponding path program 2 times [2024-11-09 15:11:51,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:51,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351152990] [2024-11-09 15:11:51,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:51,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:51,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:51,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351152990] [2024-11-09 15:11:51,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351152990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:11:51,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859074565] [2024-11-09 15:11:51,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:11:51,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:11:51,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:11:51,224 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:11:51,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:11:51,283 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:11:51,284 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:11:51,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:11:51,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:11:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:11:51,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:11:51,340 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:11:51,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859074565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:11:51,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:11:51,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-09 15:11:51,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101664197] [2024-11-09 15:11:51,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:11:51,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 15:11:51,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:51,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 15:11:51,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-09 15:11:51,380 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-11-09 15:11:51,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 121 transitions, 713 flow. Second operand has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:51,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:51,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-11-09 15:11:51,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:52,706 INFO L124 PetriNetUnfolderBase]: 11627/18620 cut-off events. [2024-11-09 15:11:52,706 INFO L125 PetriNetUnfolderBase]: For 19611/19713 co-relation queries the response was YES. [2024-11-09 15:11:52,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49810 conditions, 18620 events. 11627/18620 cut-off events. For 19611/19713 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 131955 event pairs, 9511 based on Foata normal form. 6/13724 useless extension candidates. Maximal degree in co-relation 49783. Up to 16307 conditions per place. [2024-11-09 15:11:52,824 INFO L140 encePairwiseOnDemand]: 79/92 looper letters, 54 selfloop transitions, 56 changer transitions 0/130 dead transitions. [2024-11-09 15:11:52,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 130 transitions, 1004 flow [2024-11-09 15:11:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 15:11:52,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 15:11:52,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 652 transitions. [2024-11-09 15:11:52,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29528985507246375 [2024-11-09 15:11:52,827 INFO L175 Difference]: Start difference. First operand has 107 places, 121 transitions, 713 flow. Second operand 24 states and 652 transitions. [2024-11-09 15:11:52,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 130 transitions, 1004 flow [2024-11-09 15:11:52,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 130 transitions, 991 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:11:52,839 INFO L231 Difference]: Finished difference. Result has 130 places, 130 transitions, 908 flow [2024-11-09 15:11:52,839 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=908, PETRI_PLACES=130, PETRI_TRANSITIONS=130} [2024-11-09 15:11:52,839 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 43 predicate places. [2024-11-09 15:11:52,840 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 130 transitions, 908 flow [2024-11-09 15:11:52,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:52,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:52,840 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:11:52,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 15:11:53,040 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,SelfDestructingSolverStorable11 [2024-11-09 15:11:53,041 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:11:53,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:53,041 INFO L85 PathProgramCache]: Analyzing trace with hash 572674798, now seen corresponding path program 1 times [2024-11-09 15:11:53,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:53,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518894835] [2024-11-09 15:11:53,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:53,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:11:53,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:53,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518894835] [2024-11-09 15:11:53,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518894835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:53,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:11:53,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:11:53,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071177151] [2024-11-09 15:11:53,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:53,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:11:53,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:53,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:11:53,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:11:53,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-11-09 15:11:53,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 130 transitions, 908 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:53,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:53,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-11-09 15:11:53,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:55,077 INFO L124 PetriNetUnfolderBase]: 13119/21437 cut-off events. [2024-11-09 15:11:55,077 INFO L125 PetriNetUnfolderBase]: For 23439/23535 co-relation queries the response was YES. [2024-11-09 15:11:55,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57802 conditions, 21437 events. 13119/21437 cut-off events. For 23439/23535 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 155434 event pairs, 10766 based on Foata normal form. 352/16527 useless extension candidates. Maximal degree in co-relation 57772. Up to 16364 conditions per place. [2024-11-09 15:11:55,202 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 141 selfloop transitions, 9 changer transitions 7/179 dead transitions. [2024-11-09 15:11:55,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 179 transitions, 1594 flow [2024-11-09 15:11:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:11:55,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:11:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-11-09 15:11:55,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5407608695652174 [2024-11-09 15:11:55,203 INFO L175 Difference]: Start difference. First operand has 130 places, 130 transitions, 908 flow. Second operand 4 states and 199 transitions. [2024-11-09 15:11:55,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 179 transitions, 1594 flow [2024-11-09 15:11:55,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 179 transitions, 1439 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-11-09 15:11:55,214 INFO L231 Difference]: Finished difference. Result has 124 places, 130 transitions, 809 flow [2024-11-09 15:11:55,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=809, PETRI_PLACES=124, PETRI_TRANSITIONS=130} [2024-11-09 15:11:55,215 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 37 predicate places. [2024-11-09 15:11:55,215 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 130 transitions, 809 flow [2024-11-09 15:11:55,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:55,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:55,215 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:11:55,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 15:11:55,215 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:11:55,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:55,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1224080899, now seen corresponding path program 1 times [2024-11-09 15:11:55,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:55,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567717066] [2024-11-09 15:11:55,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:55,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:11:55,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:55,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567717066] [2024-11-09 15:11:55,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567717066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:55,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:11:55,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:11:55,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422552612] [2024-11-09 15:11:55,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:55,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:11:55,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:55,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:11:55,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:11:55,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 92 [2024-11-09 15:11:55,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 130 transitions, 809 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:55,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:55,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 92 [2024-11-09 15:11:55,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:57,399 INFO L124 PetriNetUnfolderBase]: 18894/30436 cut-off events. [2024-11-09 15:11:57,399 INFO L125 PetriNetUnfolderBase]: For 28296/28308 co-relation queries the response was YES. [2024-11-09 15:11:57,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83675 conditions, 30436 events. 18894/30436 cut-off events. For 28296/28308 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 220687 event pairs, 6869 based on Foata normal form. 466/23596 useless extension candidates. Maximal degree in co-relation 83646. Up to 10486 conditions per place. [2024-11-09 15:11:57,557 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 177 selfloop transitions, 6 changer transitions 0/202 dead transitions. [2024-11-09 15:11:57,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 202 transitions, 1472 flow [2024-11-09 15:11:57,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:11:57,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:11:57,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 253 transitions. [2024-11-09 15:11:57,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-09 15:11:57,558 INFO L175 Difference]: Start difference. First operand has 124 places, 130 transitions, 809 flow. Second operand 5 states and 253 transitions. [2024-11-09 15:11:57,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 202 transitions, 1472 flow [2024-11-09 15:11:57,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 202 transitions, 1440 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-09 15:11:57,626 INFO L231 Difference]: Finished difference. Result has 129 places, 135 transitions, 824 flow [2024-11-09 15:11:57,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=824, PETRI_PLACES=129, PETRI_TRANSITIONS=135} [2024-11-09 15:11:57,627 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 42 predicate places. [2024-11-09 15:11:57,627 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 135 transitions, 824 flow [2024-11-09 15:11:57,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:57,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:57,627 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-11-09 15:11:57,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 15:11:57,627 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:11:57,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:57,628 INFO L85 PathProgramCache]: Analyzing trace with hash -2127304649, now seen corresponding path program 1 times [2024-11-09 15:11:57,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:57,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748888559] [2024-11-09 15:11:57,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:57,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:57,759 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:57,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:57,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748888559] [2024-11-09 15:11:57,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748888559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:11:57,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899267368] [2024-11-09 15:11:57,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:57,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:11:57,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:11:57,760 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:11:57,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:11:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:57,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 15:11:57,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:11:57,857 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:57,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:11:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:57,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899267368] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:11:57,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:11:57,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-09 15:11:57,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730221956] [2024-11-09 15:11:57,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:11:57,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 15:11:57,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:57,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 15:11:57,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-09 15:11:58,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-11-09 15:11:58,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 135 transitions, 824 flow. Second operand has 28 states, 28 states have (on average 24.071428571428573) internal successors, (674), 28 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:58,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:58,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-11-09 15:11:58,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:00,132 INFO L124 PetriNetUnfolderBase]: 16229/26706 cut-off events. [2024-11-09 15:12:00,133 INFO L125 PetriNetUnfolderBase]: For 31071/31209 co-relation queries the response was YES. [2024-11-09 15:12:00,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76742 conditions, 26706 events. 16229/26706 cut-off events. For 31071/31209 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 199171 event pairs, 13523 based on Foata normal form. 84/20284 useless extension candidates. Maximal degree in co-relation 76710. Up to 23171 conditions per place. [2024-11-09 15:12:00,574 INFO L140 encePairwiseOnDemand]: 80/92 looper letters, 59 selfloop transitions, 123 changer transitions 0/205 dead transitions. [2024-11-09 15:12:00,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 205 transitions, 1783 flow [2024-11-09 15:12:00,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 15:12:00,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-09 15:12:00,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 771 transitions. [2024-11-09 15:12:00,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32232441471571904 [2024-11-09 15:12:00,576 INFO L175 Difference]: Start difference. First operand has 129 places, 135 transitions, 824 flow. Second operand 26 states and 771 transitions. [2024-11-09 15:12:00,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 205 transitions, 1783 flow [2024-11-09 15:12:00,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 205 transitions, 1783 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:12:00,594 INFO L231 Difference]: Finished difference. Result has 161 places, 205 transitions, 1749 flow [2024-11-09 15:12:00,594 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1749, PETRI_PLACES=161, PETRI_TRANSITIONS=205} [2024-11-09 15:12:00,595 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 74 predicate places. [2024-11-09 15:12:00,595 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 205 transitions, 1749 flow [2024-11-09 15:12:00,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 24.071428571428573) internal successors, (674), 28 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:00,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:00,595 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:00,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 15:12:00,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 15:12:00,796 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:12:00,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:00,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1892108512, now seen corresponding path program 1 times [2024-11-09 15:12:00,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:00,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501117294] [2024-11-09 15:12:00,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:00,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:12:00,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:00,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501117294] [2024-11-09 15:12:00,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501117294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:00,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:12:00,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:12:00,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118435351] [2024-11-09 15:12:00,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:00,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:12:00,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:00,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:12:00,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:12:00,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-11-09 15:12:00,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 205 transitions, 1749 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:00,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:00,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-11-09 15:12:00,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:02,719 INFO L124 PetriNetUnfolderBase]: 15030/24867 cut-off events. [2024-11-09 15:12:02,719 INFO L125 PetriNetUnfolderBase]: For 29505/29643 co-relation queries the response was YES. [2024-11-09 15:12:02,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71200 conditions, 24867 events. 15030/24867 cut-off events. For 29505/29643 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 184316 event pairs, 7538 based on Foata normal form. 42/19315 useless extension candidates. Maximal degree in co-relation 71159. Up to 21246 conditions per place. [2024-11-09 15:12:02,919 INFO L140 encePairwiseOnDemand]: 90/92 looper letters, 185 selfloop transitions, 1 changer transitions 0/211 dead transitions. [2024-11-09 15:12:02,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 211 transitions, 2130 flow [2024-11-09 15:12:02,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:12:02,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:12:02,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-11-09 15:12:02,920 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5181159420289855 [2024-11-09 15:12:02,921 INFO L175 Difference]: Start difference. First operand has 161 places, 205 transitions, 1749 flow. Second operand 3 states and 143 transitions. [2024-11-09 15:12:02,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 211 transitions, 2130 flow [2024-11-09 15:12:02,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 211 transitions, 1789 flow, removed 92 selfloop flow, removed 12 redundant places. [2024-11-09 15:12:02,947 INFO L231 Difference]: Finished difference. Result has 150 places, 204 transitions, 1402 flow [2024-11-09 15:12:02,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1402, PETRI_PLACES=150, PETRI_TRANSITIONS=204} [2024-11-09 15:12:02,948 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 63 predicate places. [2024-11-09 15:12:02,948 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 204 transitions, 1402 flow [2024-11-09 15:12:02,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:02,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:02,949 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:02,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 15:12:02,949 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:12:02,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:02,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1892108513, now seen corresponding path program 1 times [2024-11-09 15:12:02,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:02,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287672544] [2024-11-09 15:12:02,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:02,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:12:03,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:03,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287672544] [2024-11-09 15:12:03,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287672544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:03,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118421103] [2024-11-09 15:12:03,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:03,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:03,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:03,003 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:12:03,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 15:12:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:03,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 15:12:03,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:03,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:12:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:03,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118421103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:12:03,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:12:03,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 15 [2024-11-09 15:12:03,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753076443] [2024-11-09 15:12:03,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:12:03,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 15:12:03,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:03,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 15:12:03,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-09 15:12:03,309 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-11-09 15:12:03,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 204 transitions, 1402 flow. Second operand has 15 states, 15 states have (on average 25.4) internal successors, (381), 15 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:03,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:03,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-11-09 15:12:03,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:08,012 INFO L124 PetriNetUnfolderBase]: 30244/49570 cut-off events. [2024-11-09 15:12:08,012 INFO L125 PetriNetUnfolderBase]: For 65400/65566 co-relation queries the response was YES. [2024-11-09 15:12:08,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140557 conditions, 49570 events. 30244/49570 cut-off events. For 65400/65566 co-relation queries the response was YES. Maximal size of possible extension queue 1141. Compared 398271 event pairs, 13670 based on Foata normal form. 890/39550 useless extension candidates. Maximal degree in co-relation 140518. Up to 18015 conditions per place. [2024-11-09 15:12:08,354 INFO L140 encePairwiseOnDemand]: 77/92 looper letters, 379 selfloop transitions, 95 changer transitions 13/510 dead transitions. [2024-11-09 15:12:08,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 510 transitions, 4248 flow [2024-11-09 15:12:08,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 15:12:08,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 15:12:08,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 623 transitions. [2024-11-09 15:12:08,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3983375959079284 [2024-11-09 15:12:08,356 INFO L175 Difference]: Start difference. First operand has 150 places, 204 transitions, 1402 flow. Second operand 17 states and 623 transitions. [2024-11-09 15:12:08,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 510 transitions, 4248 flow [2024-11-09 15:12:08,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 510 transitions, 4246 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:12:08,396 INFO L231 Difference]: Finished difference. Result has 175 places, 267 transitions, 2375 flow [2024-11-09 15:12:08,397 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2375, PETRI_PLACES=175, PETRI_TRANSITIONS=267} [2024-11-09 15:12:08,397 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 88 predicate places. [2024-11-09 15:12:08,397 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 267 transitions, 2375 flow [2024-11-09 15:12:08,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 25.4) internal successors, (381), 15 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:08,397 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:08,397 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] [2024-11-09 15:12:08,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 15:12:08,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:08,598 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:12:08,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:08,598 INFO L85 PathProgramCache]: Analyzing trace with hash 363202246, now seen corresponding path program 1 times [2024-11-09 15:12:08,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:08,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029582245] [2024-11-09 15:12:08,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:08,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:09,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:12:09,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:09,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029582245] [2024-11-09 15:12:09,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029582245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:09,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114054883] [2024-11-09 15:12:09,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:09,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:09,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:09,006 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:12:09,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 15:12:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:09,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 15:12:09,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:09,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 15:12:09,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 15:12:09,196 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 15:12:09,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 15:12:09,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 15:12:09,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:09,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:12:09,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:12:09,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114054883] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:09,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 15:12:09,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 19 [2024-11-09 15:12:09,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920044238] [2024-11-09 15:12:09,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:09,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:12:09,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:09,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:12:09,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-11-09 15:12:09,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 92 [2024-11-09 15:12:09,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 267 transitions, 2375 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:09,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:09,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 92 [2024-11-09 15:12:09,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:15,166 INFO L124 PetriNetUnfolderBase]: 34453/55012 cut-off events. [2024-11-09 15:12:15,166 INFO L125 PetriNetUnfolderBase]: For 81108/81344 co-relation queries the response was YES. [2024-11-09 15:12:15,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160699 conditions, 55012 events. 34453/55012 cut-off events. For 81108/81344 co-relation queries the response was YES. Maximal size of possible extension queue 1236. Compared 425991 event pairs, 10450 based on Foata normal form. 112/43120 useless extension candidates. Maximal degree in co-relation 160649. Up to 31410 conditions per place. [2024-11-09 15:12:15,919 INFO L140 encePairwiseOnDemand]: 82/92 looper letters, 267 selfloop transitions, 24 changer transitions 0/315 dead transitions. [2024-11-09 15:12:15,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 315 transitions, 3181 flow [2024-11-09 15:12:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:12:15,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:12:15,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-11-09 15:12:15,920 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5679347826086957 [2024-11-09 15:12:15,920 INFO L175 Difference]: Start difference. First operand has 175 places, 267 transitions, 2375 flow. Second operand 4 states and 209 transitions. [2024-11-09 15:12:15,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 315 transitions, 3181 flow [2024-11-09 15:12:15,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 315 transitions, 3153 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-09 15:12:15,989 INFO L231 Difference]: Finished difference. Result has 176 places, 272 transitions, 2466 flow [2024-11-09 15:12:15,989 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2466, PETRI_PLACES=176, PETRI_TRANSITIONS=272} [2024-11-09 15:12:15,989 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 89 predicate places. [2024-11-09 15:12:15,989 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 272 transitions, 2466 flow [2024-11-09 15:12:15,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:15,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:15,990 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] [2024-11-09 15:12:16,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 15:12:16,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 15:12:16,190 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:12:16,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:16,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1729185503, now seen corresponding path program 1 times [2024-11-09 15:12:16,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:16,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548889466] [2024-11-09 15:12:16,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:16,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:16,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:16,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:16,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548889466] [2024-11-09 15:12:16,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548889466] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:16,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261948870] [2024-11-09 15:12:16,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:16,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:16,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:16,503 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:12:16,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 15:12:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:16,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 15:12:16,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:16,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:12:16,655 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:12:16,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261948870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:16,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:12:16,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 11 [2024-11-09 15:12:16,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651295652] [2024-11-09 15:12:16,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:16,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:12:16,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:16,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:12:16,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:12:16,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-09 15:12:16,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 272 transitions, 2466 flow. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:16,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:16,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-09 15:12:16,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:22,445 INFO L124 PetriNetUnfolderBase]: 34960/55411 cut-off events. [2024-11-09 15:12:22,445 INFO L125 PetriNetUnfolderBase]: For 112657/112887 co-relation queries the response was YES. [2024-11-09 15:12:23,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174821 conditions, 55411 events. 34960/55411 cut-off events. For 112657/112887 co-relation queries the response was YES. Maximal size of possible extension queue 1329. Compared 430102 event pairs, 12736 based on Foata normal form. 130/44125 useless extension candidates. Maximal degree in co-relation 174768. Up to 30407 conditions per place. [2024-11-09 15:12:23,225 INFO L140 encePairwiseOnDemand]: 84/92 looper letters, 307 selfloop transitions, 10 changer transitions 0/340 dead transitions. [2024-11-09 15:12:23,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 340 transitions, 3366 flow [2024-11-09 15:12:23,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:12:23,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:12:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 282 transitions. [2024-11-09 15:12:23,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-11-09 15:12:23,226 INFO L175 Difference]: Start difference. First operand has 176 places, 272 transitions, 2466 flow. Second operand 6 states and 282 transitions. [2024-11-09 15:12:23,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 340 transitions, 3366 flow [2024-11-09 15:12:23,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 340 transitions, 3366 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:12:23,298 INFO L231 Difference]: Finished difference. Result has 183 places, 272 transitions, 2492 flow [2024-11-09 15:12:23,299 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=2460, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2492, PETRI_PLACES=183, PETRI_TRANSITIONS=272} [2024-11-09 15:12:23,299 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 96 predicate places. [2024-11-09 15:12:23,299 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 272 transitions, 2492 flow [2024-11-09 15:12:23,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:23,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:23,299 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] [2024-11-09 15:12:23,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 15:12:23,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:23,500 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-09 15:12:23,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:23,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1728637731, now seen corresponding path program 1 times [2024-11-09 15:12:23,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:23,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567093432] [2024-11-09 15:12:23,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:23,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:23,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:12:23,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:23,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567093432] [2024-11-09 15:12:23,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567093432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:23,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982588796] [2024-11-09 15:12:23,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:23,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:23,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:23,640 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:12:23,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 15:12:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:23,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:12:23,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:23,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:12:23,759 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:12:23,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982588796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:23,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:12:23,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-09 15:12:23,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731719599] [2024-11-09 15:12:23,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:23,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:12:23,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:23,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:12:23,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 15:12:23,760 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-11-09 15:12:23,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 272 transitions, 2492 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:23,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:23,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-11-09 15:12:23,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand