./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b29ee6f81c7ed2984792cb48e45a380cefe6f3d0c807482de3b6756d33333e4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:05:23,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:05:23,858 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:05:23,863 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:05:23,864 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:05:23,890 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:05:23,891 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:05:23,892 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:05:23,892 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:05:23,893 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:05:23,894 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:05:23,894 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:05:23,895 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:05:23,897 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:05:23,898 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:05:23,898 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:05:23,898 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:05:23,898 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:05:23,898 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:05:23,899 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:05:23,899 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:05:23,899 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:05:23,899 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:05:23,900 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:05:23,900 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:05:23,900 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:05:23,900 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:05:23,900 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:05:23,900 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:05:23,901 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:05:23,901 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:05:23,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:05:23,901 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:05:23,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:05:23,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:05:23,902 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:05:23,902 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:05:23,902 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:05:23,902 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:05:23,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:05:23,903 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:05:23,905 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:05:23,905 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:05:23,905 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:05:23,905 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b29ee6f81c7ed2984792cb48e45a380cefe6f3d0c807482de3b6756d33333e4 [2024-10-12 00:05:24,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:05:24,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:05:24,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:05:24,259 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:05:24,263 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:05:24,264 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2024-10-12 00:05:25,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:05:26,094 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:05:26,094 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2024-10-12 00:05:26,103 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/e30f3fffe/ca76200c0c24414ca6c01c847c7f9766/FLAGafe193bc8 [2024-10-12 00:05:26,121 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/e30f3fffe/ca76200c0c24414ca6c01c847c7f9766 [2024-10-12 00:05:26,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:05:26,125 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:05:26,126 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:05:26,126 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:05:26,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:05:26,140 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:05:26" (1/1) ... [2024-10-12 00:05:26,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fdfa2e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:26, skipping insertion in model container [2024-10-12 00:05:26,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:05:26" (1/1) ... [2024-10-12 00:05:26,162 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:05:26,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:05:26,340 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:05:26,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:05:26,403 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:05:26,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:26 WrapperNode [2024-10-12 00:05:26,409 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:05:26,410 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:05:26,410 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:05:26,410 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:05:26,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:26" (1/1) ... [2024-10-12 00:05:26,437 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:26" (1/1) ... [2024-10-12 00:05:26,479 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 158 [2024-10-12 00:05:26,480 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:05:26,480 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:05:26,480 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:05:26,481 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:05:26,491 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:26" (1/1) ... [2024-10-12 00:05:26,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:26" (1/1) ... [2024-10-12 00:05:26,499 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:26" (1/1) ... [2024-10-12 00:05:26,551 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-12 00:05:26,551 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:26" (1/1) ... [2024-10-12 00:05:26,551 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:26" (1/1) ... [2024-10-12 00:05:26,561 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:26" (1/1) ... [2024-10-12 00:05:26,565 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:26" (1/1) ... [2024-10-12 00:05:26,570 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:26" (1/1) ... [2024-10-12 00:05:26,571 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:26" (1/1) ... [2024-10-12 00:05:26,573 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:05:26,576 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:05:26,576 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:05:26,577 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:05:26,578 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:26" (1/1) ... [2024-10-12 00:05:26,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:05:26,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:26,610 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:05:26,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:05:26,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:05:26,704 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:05:26,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:05:26,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:05:26,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:05:26,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:05:26,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 00:05:26,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 00:05:26,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 00:05:26,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:05:26,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:05:26,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 00:05:26,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:05:26,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:05:26,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 00:05:26,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 00:05:26,709 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:05:26,797 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:05:26,799 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:05:27,009 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:05:27,010 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:05:27,163 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:05:27,164 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-12 00:05:27,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:05:27 BoogieIcfgContainer [2024-10-12 00:05:27,164 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:05:27,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:05:27,168 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:05:27,171 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:05:27,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:05:26" (1/3) ... [2024-10-12 00:05:27,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a3bb8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:05:27, skipping insertion in model container [2024-10-12 00:05:27,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:26" (2/3) ... [2024-10-12 00:05:27,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a3bb8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:05:27, skipping insertion in model container [2024-10-12 00:05:27,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:05:27" (3/3) ... [2024-10-12 00:05:27,174 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-channel-sum.wvr.c [2024-10-12 00:05:27,189 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:05:27,189 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-12 00:05:27,190 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:05:27,245 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-12 00:05:27,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 47 transitions, 108 flow [2024-10-12 00:05:27,315 INFO L124 PetriNetUnfolderBase]: 5/45 cut-off events. [2024-10-12 00:05:27,315 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-12 00:05:27,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 45 events. 5/45 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 108 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-10-12 00:05:27,319 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 47 transitions, 108 flow [2024-10-12 00:05:27,322 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 43 transitions, 95 flow [2024-10-12 00:05:27,335 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:05:27,341 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;@1844a98c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:05:27,341 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-12 00:05:27,344 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:05:27,344 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-12 00:05:27,344 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:05:27,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:27,344 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-12 00:05:27,345 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:05:27,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:27,349 INFO L85 PathProgramCache]: Analyzing trace with hash 465502, now seen corresponding path program 1 times [2024-10-12 00:05:27,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:27,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050860050] [2024-10-12 00:05:27,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:27,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:27,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:27,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:27,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050860050] [2024-10-12 00:05:27,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050860050] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:27,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:27,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:05:27,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892594015] [2024-10-12 00:05:27,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:27,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:27,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:27,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:27,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:27,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-12 00:05:27,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:27,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:27,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-12 00:05:27,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:27,819 INFO L124 PetriNetUnfolderBase]: 219/420 cut-off events. [2024-10-12 00:05:27,819 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-10-12 00:05:27,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 420 events. 219/420 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2182 event pairs, 194 based on Foata normal form. 1/315 useless extension candidates. Maximal degree in co-relation 729. Up to 377 conditions per place. [2024-10-12 00:05:27,863 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 28 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-10-12 00:05:27,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 163 flow [2024-10-12 00:05:27,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:05:27,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:05:27,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-10-12 00:05:27,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-10-12 00:05:27,879 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 95 flow. Second operand 4 states and 95 transitions. [2024-10-12 00:05:27,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 163 flow [2024-10-12 00:05:27,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 158 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:05:27,884 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 117 flow [2024-10-12 00:05:27,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2024-10-12 00:05:27,889 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-10-12 00:05:27,890 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 117 flow [2024-10-12 00:05:27,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:27,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:27,890 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-12 00:05:27,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:05:27,891 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:05:27,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:27,891 INFO L85 PathProgramCache]: Analyzing trace with hash 983330813, now seen corresponding path program 1 times [2024-10-12 00:05:27,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:27,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256243922] [2024-10-12 00:05:27,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:27,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:28,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:28,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:28,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256243922] [2024-10-12 00:05:28,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256243922] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:28,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472582880] [2024-10-12 00:05:28,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:28,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:28,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:28,007 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:28,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:05:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:28,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:05:28,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:28,177 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:05:28,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472582880] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:28,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:05:28,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-12 00:05:28,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484518156] [2024-10-12 00:05:28,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:28,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:05:28,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:28,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:05:28,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:05:28,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-12 00:05:28,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:28,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:28,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-12 00:05:28,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:28,347 INFO L124 PetriNetUnfolderBase]: 219/419 cut-off events. [2024-10-12 00:05:28,347 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-12 00:05:28,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 419 events. 219/419 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2191 event pairs, 194 based on Foata normal form. 1/315 useless extension candidates. Maximal degree in co-relation 796. Up to 372 conditions per place. [2024-10-12 00:05:28,352 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 24 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2024-10-12 00:05:28,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 175 flow [2024-10-12 00:05:28,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:05:28,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:05:28,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-10-12 00:05:28,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4326241134751773 [2024-10-12 00:05:28,355 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 117 flow. Second operand 6 states and 122 transitions. [2024-10-12 00:05:28,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 175 flow [2024-10-12 00:05:28,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:28,357 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 124 flow [2024-10-12 00:05:28,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-10-12 00:05:28,360 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2024-10-12 00:05:28,360 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 124 flow [2024-10-12 00:05:28,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:28,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:28,360 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:28,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 00:05:28,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:28,566 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:05:28,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:28,566 INFO L85 PathProgramCache]: Analyzing trace with hash 484397929, now seen corresponding path program 1 times [2024-10-12 00:05:28,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:28,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112386167] [2024-10-12 00:05:28,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:28,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:28,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:28,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:28,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112386167] [2024-10-12 00:05:28,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112386167] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:28,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:28,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:05:28,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700279101] [2024-10-12 00:05:28,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:28,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:05:28,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:28,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:05:28,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:05:28,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-12 00:05:28,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:28,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:28,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-12 00:05:28,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:28,773 INFO L124 PetriNetUnfolderBase]: 261/514 cut-off events. [2024-10-12 00:05:28,773 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-12 00:05:28,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998 conditions, 514 events. 261/514 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2620 event pairs, 152 based on Foata normal form. 30/404 useless extension candidates. Maximal degree in co-relation 968. Up to 303 conditions per place. [2024-10-12 00:05:28,777 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 46 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-10-12 00:05:28,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 60 transitions, 254 flow [2024-10-12 00:05:28,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:05:28,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:05:28,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-10-12 00:05:28,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6453900709219859 [2024-10-12 00:05:28,778 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 124 flow. Second operand 3 states and 91 transitions. [2024-10-12 00:05:28,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 60 transitions, 254 flow [2024-10-12 00:05:28,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 232 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-12 00:05:28,780 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 104 flow [2024-10-12 00:05:28,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2024-10-12 00:05:28,781 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places. [2024-10-12 00:05:28,781 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 104 flow [2024-10-12 00:05:28,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:28,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:28,781 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-12 00:05:28,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 00:05:28,781 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:05:28,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:28,782 INFO L85 PathProgramCache]: Analyzing trace with hash 418484597, now seen corresponding path program 1 times [2024-10-12 00:05:28,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:28,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919766773] [2024-10-12 00:05:28,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:28,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:28,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:28,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919766773] [2024-10-12 00:05:28,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919766773] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:28,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670937487] [2024-10-12 00:05:28,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:28,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:28,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:28,866 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:28,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:05:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:28,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:05:28,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:28,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:28,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:05:28,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:28,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670937487] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:05:28,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:05:28,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-12 00:05:28,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928923420] [2024-10-12 00:05:28,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:05:28,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:05:28,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:28,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:05:28,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:05:28,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-12 00:05:28,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 104 flow. Second operand has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:28,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:28,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-12 00:05:28,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:29,131 INFO L124 PetriNetUnfolderBase]: 222/430 cut-off events. [2024-10-12 00:05:29,131 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-10-12 00:05:29,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 902 conditions, 430 events. 222/430 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2237 event pairs, 194 based on Foata normal form. 3/355 useless extension candidates. Maximal degree in co-relation 852. Up to 379 conditions per place. [2024-10-12 00:05:29,134 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 27 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-10-12 00:05:29,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 214 flow [2024-10-12 00:05:29,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:05:29,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:05:29,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-10-12 00:05:29,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4106382978723404 [2024-10-12 00:05:29,137 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 104 flow. Second operand 10 states and 193 transitions. [2024-10-12 00:05:29,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 214 flow [2024-10-12 00:05:29,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:05:29,139 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 174 flow [2024-10-12 00:05:29,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=174, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-10-12 00:05:29,140 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 11 predicate places. [2024-10-12 00:05:29,140 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 174 flow [2024-10-12 00:05:29,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:29,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:29,141 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:29,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 00:05:29,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:29,346 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:05:29,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:29,347 INFO L85 PathProgramCache]: Analyzing trace with hash 2131434395, now seen corresponding path program 1 times [2024-10-12 00:05:29,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:29,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249490810] [2024-10-12 00:05:29,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:29,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:29,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:29,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:29,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249490810] [2024-10-12 00:05:29,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249490810] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:29,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:29,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:05:29,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333802560] [2024-10-12 00:05:29,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:29,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:29,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:29,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:29,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:29,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-12 00:05:29,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:29,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:29,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-12 00:05:29,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:29,545 INFO L124 PetriNetUnfolderBase]: 249/494 cut-off events. [2024-10-12 00:05:29,545 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-10-12 00:05:29,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 997 conditions, 494 events. 249/494 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2627 event pairs, 222 based on Foata normal form. 5/390 useless extension candidates. Maximal degree in co-relation 963. Up to 383 conditions per place. [2024-10-12 00:05:29,548 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 36 selfloop transitions, 2 changer transitions 12/63 dead transitions. [2024-10-12 00:05:29,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 300 flow [2024-10-12 00:05:29,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:05:29,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:05:29,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-10-12 00:05:29,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5904255319148937 [2024-10-12 00:05:29,549 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 174 flow. Second operand 4 states and 111 transitions. [2024-10-12 00:05:29,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 300 flow [2024-10-12 00:05:29,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 289 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-12 00:05:29,552 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 168 flow [2024-10-12 00:05:29,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-10-12 00:05:29,552 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 13 predicate places. [2024-10-12 00:05:29,552 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 168 flow [2024-10-12 00:05:29,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:29,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:29,553 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:29,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 00:05:29,553 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:05:29,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:29,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1261080228, now seen corresponding path program 1 times [2024-10-12 00:05:29,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:29,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104652758] [2024-10-12 00:05:29,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:29,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:29,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:29,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:29,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104652758] [2024-10-12 00:05:29,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104652758] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:29,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227081054] [2024-10-12 00:05:29,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:29,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:29,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:29,644 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:29,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 00:05:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:29,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:05:29,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:05:29,722 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:05:29,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227081054] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:29,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:05:29,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-10-12 00:05:29,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502715280] [2024-10-12 00:05:29,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:29,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:29,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:29,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:29,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-12 00:05:29,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-12 00:05:29,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:29,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:29,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-12 00:05:29,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:29,837 INFO L124 PetriNetUnfolderBase]: 219/451 cut-off events. [2024-10-12 00:05:29,837 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-10-12 00:05:29,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 451 events. 219/451 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2286 event pairs, 152 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 904. Up to 310 conditions per place. [2024-10-12 00:05:29,840 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 52 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2024-10-12 00:05:29,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 67 transitions, 314 flow [2024-10-12 00:05:29,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:05:29,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:05:29,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-10-12 00:05:29,841 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2024-10-12 00:05:29,841 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 168 flow. Second operand 4 states and 105 transitions. [2024-10-12 00:05:29,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 67 transitions, 314 flow [2024-10-12 00:05:29,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:05:29,843 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 168 flow [2024-10-12 00:05:29,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-10-12 00:05:29,844 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-10-12 00:05:29,844 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 168 flow [2024-10-12 00:05:29,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:29,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:29,845 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:29,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 00:05:30,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:30,046 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:05:30,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:30,047 INFO L85 PathProgramCache]: Analyzing trace with hash -438780918, now seen corresponding path program 1 times [2024-10-12 00:05:30,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:30,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000028621] [2024-10-12 00:05:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:30,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:30,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:05:30,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:30,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000028621] [2024-10-12 00:05:30,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000028621] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:30,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:30,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:05:30,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68386103] [2024-10-12 00:05:30,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:30,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:30,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:30,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:30,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:30,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-12 00:05:30,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:30,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:30,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-12 00:05:30,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:30,292 INFO L124 PetriNetUnfolderBase]: 426/818 cut-off events. [2024-10-12 00:05:30,292 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2024-10-12 00:05:30,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1709 conditions, 818 events. 426/818 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3890 event pairs, 133 based on Foata normal form. 52/712 useless extension candidates. Maximal degree in co-relation 1680. Up to 402 conditions per place. [2024-10-12 00:05:30,298 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 78 selfloop transitions, 6 changer transitions 6/100 dead transitions. [2024-10-12 00:05:30,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 458 flow [2024-10-12 00:05:30,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:05:30,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:05:30,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-10-12 00:05:30,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6638297872340425 [2024-10-12 00:05:30,300 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 168 flow. Second operand 5 states and 156 transitions. [2024-10-12 00:05:30,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 458 flow [2024-10-12 00:05:30,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 100 transitions, 452 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:05:30,304 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 207 flow [2024-10-12 00:05:30,304 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=207, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-10-12 00:05:30,304 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2024-10-12 00:05:30,305 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 207 flow [2024-10-12 00:05:30,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:30,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:30,305 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:30,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 00:05:30,306 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:05:30,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:30,306 INFO L85 PathProgramCache]: Analyzing trace with hash -237763625, now seen corresponding path program 1 times [2024-10-12 00:05:30,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:30,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600802887] [2024-10-12 00:05:30,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:30,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:30,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:05:30,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:30,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600802887] [2024-10-12 00:05:30,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600802887] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:30,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:30,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:05:30,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55375064] [2024-10-12 00:05:30,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:30,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:05:30,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:30,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:05:30,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:05:30,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-12 00:05:30,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:30,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:30,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-12 00:05:30,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:30,430 INFO L124 PetriNetUnfolderBase]: 319/690 cut-off events. [2024-10-12 00:05:30,431 INFO L125 PetriNetUnfolderBase]: For 430/455 co-relation queries the response was YES. [2024-10-12 00:05:30,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 690 events. 319/690 cut-off events. For 430/455 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3440 event pairs, 234 based on Foata normal form. 25/650 useless extension candidates. Maximal degree in co-relation 1489. Up to 547 conditions per place. [2024-10-12 00:05:30,435 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 39 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2024-10-12 00:05:30,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 53 transitions, 283 flow [2024-10-12 00:05:30,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:05:30,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:05:30,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-10-12 00:05:30,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-10-12 00:05:30,436 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 207 flow. Second operand 3 states and 78 transitions. [2024-10-12 00:05:30,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 53 transitions, 283 flow [2024-10-12 00:05:30,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 53 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:30,438 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 202 flow [2024-10-12 00:05:30,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-10-12 00:05:30,439 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2024-10-12 00:05:30,439 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 202 flow [2024-10-12 00:05:30,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:30,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:30,439 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:30,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 00:05:30,440 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:05:30,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:30,440 INFO L85 PathProgramCache]: Analyzing trace with hash -237763624, now seen corresponding path program 1 times [2024-10-12 00:05:30,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:30,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106980988] [2024-10-12 00:05:30,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:30,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:30,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:30,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:30,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106980988] [2024-10-12 00:05:30,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106980988] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:30,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812494794] [2024-10-12 00:05:30,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:30,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:30,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:30,546 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:30,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 00:05:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:30,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:05:30,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:05:30,651 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:05:30,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812494794] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:30,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:05:30,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-10-12 00:05:30,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429041961] [2024-10-12 00:05:30,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:30,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:30,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:30,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:30,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-12 00:05:30,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-12 00:05:30,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:30,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:30,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-12 00:05:30,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:30,756 INFO L124 PetriNetUnfolderBase]: 263/557 cut-off events. [2024-10-12 00:05:30,756 INFO L125 PetriNetUnfolderBase]: For 337/362 co-relation queries the response was YES. [2024-10-12 00:05:30,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 557 events. 263/557 cut-off events. For 337/362 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2667 event pairs, 114 based on Foata normal form. 63/560 useless extension candidates. Maximal degree in co-relation 1247. Up to 302 conditions per place. [2024-10-12 00:05:30,759 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 32 selfloop transitions, 6 changer transitions 6/57 dead transitions. [2024-10-12 00:05:30,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 305 flow [2024-10-12 00:05:30,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:05:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:05:30,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-10-12 00:05:30,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-10-12 00:05:30,760 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 202 flow. Second operand 4 states and 99 transitions. [2024-10-12 00:05:30,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 305 flow [2024-10-12 00:05:30,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:30,763 INFO L231 Difference]: Finished difference. Result has 60 places, 47 transitions, 192 flow [2024-10-12 00:05:30,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=60, PETRI_TRANSITIONS=47} [2024-10-12 00:05:30,763 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2024-10-12 00:05:30,763 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 47 transitions, 192 flow [2024-10-12 00:05:30,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:30,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:30,764 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-12 00:05:30,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 00:05:30,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-12 00:05:30,965 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:05:30,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:30,966 INFO L85 PathProgramCache]: Analyzing trace with hash -774175756, now seen corresponding path program 2 times [2024-10-12 00:05:30,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:30,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974375389] [2024-10-12 00:05:30,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:30,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:31,071 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:31,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:31,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974375389] [2024-10-12 00:05:31,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974375389] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:31,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377185264] [2024-10-12 00:05:31,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:05:31,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:31,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:31,078 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:31,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 00:05:31,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:05:31,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:05:31,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:05:31,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:05:31,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:05:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:05:31,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377185264] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:05:31,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:05:31,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-12 00:05:31,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592136896] [2024-10-12 00:05:31,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:05:31,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 00:05:31,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:31,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 00:05:31,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-12 00:05:31,243 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-12 00:05:31,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 192 flow. Second operand has 14 states, 14 states have (on average 16.142857142857142) internal successors, (226), 14 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:31,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:31,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-12 00:05:31,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:31,426 INFO L124 PetriNetUnfolderBase]: 125/320 cut-off events. [2024-10-12 00:05:31,426 INFO L125 PetriNetUnfolderBase]: For 391/412 co-relation queries the response was YES. [2024-10-12 00:05:31,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 320 events. 125/320 cut-off events. For 391/412 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1289 event pairs, 82 based on Foata normal form. 23/307 useless extension candidates. Maximal degree in co-relation 751. Up to 208 conditions per place. [2024-10-12 00:05:31,428 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 19 selfloop transitions, 18 changer transitions 0/49 dead transitions. [2024-10-12 00:05:31,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 49 transitions, 272 flow [2024-10-12 00:05:31,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 00:05:31,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-12 00:05:31,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 247 transitions. [2024-10-12 00:05:31,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37537993920972645 [2024-10-12 00:05:31,430 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 192 flow. Second operand 14 states and 247 transitions. [2024-10-12 00:05:31,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 49 transitions, 272 flow [2024-10-12 00:05:31,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 49 transitions, 246 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-10-12 00:05:31,432 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 208 flow [2024-10-12 00:05:31,432 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=208, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-10-12 00:05:31,433 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2024-10-12 00:05:31,433 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 208 flow [2024-10-12 00:05:31,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.142857142857142) internal successors, (226), 14 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:31,433 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:31,433 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:31,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-12 00:05:31,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-12 00:05:31,635 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:05:31,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:31,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1244029632, now seen corresponding path program 1 times [2024-10-12 00:05:31,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:31,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617703802] [2024-10-12 00:05:31,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:31,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:05:31,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:31,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617703802] [2024-10-12 00:05:31,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617703802] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:31,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:31,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:05:31,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964421394] [2024-10-12 00:05:31,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:31,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:05:31,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:31,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:05:31,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:05:31,677 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-12 00:05:31,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:31,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:31,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-12 00:05:31,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:31,728 INFO L124 PetriNetUnfolderBase]: 158/335 cut-off events. [2024-10-12 00:05:31,728 INFO L125 PetriNetUnfolderBase]: For 179/196 co-relation queries the response was YES. [2024-10-12 00:05:31,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 335 events. 158/335 cut-off events. For 179/196 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1340 event pairs, 96 based on Foata normal form. 19/315 useless extension candidates. Maximal degree in co-relation 786. Up to 241 conditions per place. [2024-10-12 00:05:31,731 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 45 selfloop transitions, 2 changer transitions 2/59 dead transitions. [2024-10-12 00:05:31,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 330 flow [2024-10-12 00:05:31,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:05:31,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:05:31,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-10-12 00:05:31,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-10-12 00:05:31,732 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 208 flow. Second operand 3 states and 81 transitions. [2024-10-12 00:05:31,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 330 flow [2024-10-12 00:05:31,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 262 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-10-12 00:05:31,733 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 148 flow [2024-10-12 00:05:31,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2024-10-12 00:05:31,734 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 7 predicate places. [2024-10-12 00:05:31,734 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 148 flow [2024-10-12 00:05:31,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:31,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:31,735 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:31,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 00:05:31,735 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:05:31,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:31,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1175978747, now seen corresponding path program 1 times [2024-10-12 00:05:31,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:31,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101671199] [2024-10-12 00:05:31,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:31,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:32,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:32,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:32,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101671199] [2024-10-12 00:05:32,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101671199] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:32,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739570343] [2024-10-12 00:05:32,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:32,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:32,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:32,106 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:32,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 00:05:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:32,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 00:05:32,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:32,240 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 [2024-10-12 00:05:32,530 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-12 00:05:32,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-10-12 00:05:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:32,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:05:32,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-10-12 00:05:32,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-10-12 00:05:32,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:32,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739570343] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:05:32,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:05:32,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-10-12 00:05:32,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208369021] [2024-10-12 00:05:32,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:05:32,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-12 00:05:32,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:32,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-12 00:05:32,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-10-12 00:05:33,048 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-12 00:05:33,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 148 flow. Second operand has 20 states, 20 states have (on average 14.4) internal successors, (288), 20 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:33,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:33,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-12 00:05:33,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:33,823 INFO L124 PetriNetUnfolderBase]: 486/959 cut-off events. [2024-10-12 00:05:33,824 INFO L125 PetriNetUnfolderBase]: For 454/507 co-relation queries the response was YES. [2024-10-12 00:05:33,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2256 conditions, 959 events. 486/959 cut-off events. For 454/507 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4809 event pairs, 94 based on Foata normal form. 53/895 useless extension candidates. Maximal degree in co-relation 2245. Up to 238 conditions per place. [2024-10-12 00:05:33,832 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 93 selfloop transitions, 26 changer transitions 4/133 dead transitions. [2024-10-12 00:05:33,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 133 transitions, 648 flow [2024-10-12 00:05:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 00:05:33,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-12 00:05:33,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 295 transitions. [2024-10-12 00:05:33,835 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41843971631205673 [2024-10-12 00:05:33,835 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 148 flow. Second operand 15 states and 295 transitions. [2024-10-12 00:05:33,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 133 transitions, 648 flow [2024-10-12 00:05:33,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 133 transitions, 644 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:33,838 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 283 flow [2024-10-12 00:05:33,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=283, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2024-10-12 00:05:33,839 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 26 predicate places. [2024-10-12 00:05:33,841 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 283 flow [2024-10-12 00:05:33,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.4) internal successors, (288), 20 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:33,841 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:33,841 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:33,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-12 00:05:34,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-12 00:05:34,043 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:05:34,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:34,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2095603277, now seen corresponding path program 1 times [2024-10-12 00:05:34,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:34,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786676523] [2024-10-12 00:05:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:34,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:34,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:34,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:34,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786676523] [2024-10-12 00:05:34,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786676523] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:34,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670020289] [2024-10-12 00:05:34,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:34,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:34,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:34,566 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:34,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 00:05:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:34,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-12 00:05:34,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:34,674 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 [2024-10-12 00:05:35,123 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-12 00:05:35,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-10-12 00:05:35,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:35,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:05:35,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-10-12 00:05:35,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-10-12 00:05:35,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:35,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670020289] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:05:35,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:05:35,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 20 [2024-10-12 00:05:35,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153631571] [2024-10-12 00:05:35,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:05:35,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-12 00:05:35,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:35,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-12 00:05:35,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2024-10-12 00:05:36,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-12 00:05:36,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 283 flow. Second operand has 22 states, 22 states have (on average 15.181818181818182) internal successors, (334), 22 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:36,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:36,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-12 00:05:36,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:38,502 INFO L124 PetriNetUnfolderBase]: 499/1070 cut-off events. [2024-10-12 00:05:38,503 INFO L125 PetriNetUnfolderBase]: For 1716/1777 co-relation queries the response was YES. [2024-10-12 00:05:38,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3061 conditions, 1070 events. 499/1070 cut-off events. For 1716/1777 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5749 event pairs, 34 based on Foata normal form. 93/1105 useless extension candidates. Maximal degree in co-relation 3043. Up to 235 conditions per place. [2024-10-12 00:05:38,511 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 140 selfloop transitions, 41 changer transitions 4/197 dead transitions. [2024-10-12 00:05:38,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 197 transitions, 1162 flow [2024-10-12 00:05:38,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-12 00:05:38,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-12 00:05:38,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 492 transitions. [2024-10-12 00:05:38,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43617021276595747 [2024-10-12 00:05:38,513 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 283 flow. Second operand 24 states and 492 transitions. [2024-10-12 00:05:38,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 197 transitions, 1162 flow [2024-10-12 00:05:38,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 197 transitions, 1120 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-12 00:05:38,518 INFO L231 Difference]: Finished difference. Result has 98 places, 76 transitions, 510 flow [2024-10-12 00:05:38,518 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=510, PETRI_PLACES=98, PETRI_TRANSITIONS=76} [2024-10-12 00:05:38,518 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 53 predicate places. [2024-10-12 00:05:38,519 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 76 transitions, 510 flow [2024-10-12 00:05:38,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 15.181818181818182) internal successors, (334), 22 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:38,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:38,519 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:38,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 00:05:38,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:38,721 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:05:38,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:38,721 INFO L85 PathProgramCache]: Analyzing trace with hash 795734115, now seen corresponding path program 2 times [2024-10-12 00:05:38,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:38,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825734651] [2024-10-12 00:05:38,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:38,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:39,641 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:39,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:39,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825734651] [2024-10-12 00:05:39,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825734651] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:39,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126766566] [2024-10-12 00:05:39,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:05:39,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:39,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:39,643 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:39,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 00:05:39,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:05:39,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:05:39,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 00:05:39,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:39,842 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:05:39,842 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:05:39,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126766566] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:39,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:05:39,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 14 [2024-10-12 00:05:39,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577507532] [2024-10-12 00:05:39,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:39,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:05:39,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:39,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:05:39,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-10-12 00:05:39,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-10-12 00:05:39,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 76 transitions, 510 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:39,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:39,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-10-12 00:05:39,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:40,059 INFO L124 PetriNetUnfolderBase]: 561/1276 cut-off events. [2024-10-12 00:05:40,059 INFO L125 PetriNetUnfolderBase]: For 4106/4139 co-relation queries the response was YES. [2024-10-12 00:05:40,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4317 conditions, 1276 events. 561/1276 cut-off events. For 4106/4139 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7487 event pairs, 34 based on Foata normal form. 43/1257 useless extension candidates. Maximal degree in co-relation 4289. Up to 275 conditions per place. [2024-10-12 00:05:40,069 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 83 selfloop transitions, 19 changer transitions 2/117 dead transitions. [2024-10-12 00:05:40,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 117 transitions, 927 flow [2024-10-12 00:05:40,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:05:40,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:05:40,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-10-12 00:05:40,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.541033434650456 [2024-10-12 00:05:40,071 INFO L175 Difference]: Start difference. First operand has 98 places, 76 transitions, 510 flow. Second operand 7 states and 178 transitions. [2024-10-12 00:05:40,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 117 transitions, 927 flow [2024-10-12 00:05:40,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 117 transitions, 832 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-10-12 00:05:40,078 INFO L231 Difference]: Finished difference. Result has 96 places, 79 transitions, 502 flow [2024-10-12 00:05:40,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=502, PETRI_PLACES=96, PETRI_TRANSITIONS=79} [2024-10-12 00:05:40,078 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 51 predicate places. [2024-10-12 00:05:40,079 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 79 transitions, 502 flow [2024-10-12 00:05:40,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:40,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:40,079 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:40,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 00:05:40,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-12 00:05:40,280 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:05:40,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:40,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1523808993, now seen corresponding path program 1 times [2024-10-12 00:05:40,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:40,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150629662] [2024-10-12 00:05:40,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:40,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:40,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:40,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:40,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150629662] [2024-10-12 00:05:40,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150629662] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:40,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902343676] [2024-10-12 00:05:40,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:40,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:40,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:40,609 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:40,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 00:05:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:40,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:05:40,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:40,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:05:41,042 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:41,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902343676] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:05:41,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:05:41,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-10-12 00:05:41,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175741990] [2024-10-12 00:05:41,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:05:41,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-12 00:05:41,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:41,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-12 00:05:41,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-10-12 00:05:41,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-12 00:05:41,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 79 transitions, 502 flow. Second operand has 18 states, 18 states have (on average 14.88888888888889) internal successors, (268), 18 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:41,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:41,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-12 00:05:41,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:41,592 INFO L124 PetriNetUnfolderBase]: 508/1223 cut-off events. [2024-10-12 00:05:41,592 INFO L125 PetriNetUnfolderBase]: For 4700/4714 co-relation queries the response was YES. [2024-10-12 00:05:41,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4238 conditions, 1223 events. 508/1223 cut-off events. For 4700/4714 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7251 event pairs, 278 based on Foata normal form. 24/1187 useless extension candidates. Maximal degree in co-relation 4206. Up to 522 conditions per place. [2024-10-12 00:05:41,600 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 31 selfloop transitions, 12 changer transitions 55/112 dead transitions. [2024-10-12 00:05:41,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 112 transitions, 865 flow [2024-10-12 00:05:41,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 00:05:41,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-12 00:05:41,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-10-12 00:05:41,602 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42789598108747046 [2024-10-12 00:05:41,602 INFO L175 Difference]: Start difference. First operand has 96 places, 79 transitions, 502 flow. Second operand 9 states and 181 transitions. [2024-10-12 00:05:41,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 112 transitions, 865 flow [2024-10-12 00:05:41,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 112 transitions, 840 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-12 00:05:41,612 INFO L231 Difference]: Finished difference. Result has 102 places, 57 transitions, 317 flow [2024-10-12 00:05:41,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=317, PETRI_PLACES=102, PETRI_TRANSITIONS=57} [2024-10-12 00:05:41,613 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 57 predicate places. [2024-10-12 00:05:41,613 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 57 transitions, 317 flow [2024-10-12 00:05:41,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.88888888888889) internal successors, (268), 18 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:41,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:41,613 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:41,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 00:05:41,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:41,814 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:05:41,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:41,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1102045723, now seen corresponding path program 2 times [2024-10-12 00:05:41,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:41,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628960133] [2024-10-12 00:05:41,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:41,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:42,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:42,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628960133] [2024-10-12 00:05:42,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628960133] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:42,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229654130] [2024-10-12 00:05:42,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:05:42,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:42,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:42,431 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:42,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 00:05:42,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:05:42,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:05:42,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:05:42,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:05:42,597 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:05:42,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229654130] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:42,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:05:42,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 14 [2024-10-12 00:05:42,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415904020] [2024-10-12 00:05:42,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:42,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:05:42,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:42,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:05:42,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-10-12 00:05:42,619 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-10-12 00:05:42,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 57 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:42,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:42,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-10-12 00:05:42,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:42,761 INFO L124 PetriNetUnfolderBase]: 330/766 cut-off events. [2024-10-12 00:05:42,762 INFO L125 PetriNetUnfolderBase]: For 2634/2638 co-relation queries the response was YES. [2024-10-12 00:05:42,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2600 conditions, 766 events. 330/766 cut-off events. For 2634/2638 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3870 event pairs, 48 based on Foata normal form. 22/750 useless extension candidates. Maximal degree in co-relation 2568. Up to 262 conditions per place. [2024-10-12 00:05:42,767 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 63 selfloop transitions, 7 changer transitions 2/85 dead transitions. [2024-10-12 00:05:42,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 85 transitions, 598 flow [2024-10-12 00:05:42,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:05:42,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:05:42,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-10-12 00:05:42,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5354609929078015 [2024-10-12 00:05:42,769 INFO L175 Difference]: Start difference. First operand has 102 places, 57 transitions, 317 flow. Second operand 6 states and 151 transitions. [2024-10-12 00:05:42,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 85 transitions, 598 flow [2024-10-12 00:05:42,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 85 transitions, 502 flow, removed 36 selfloop flow, removed 16 redundant places. [2024-10-12 00:05:42,773 INFO L231 Difference]: Finished difference. Result has 77 places, 58 transitions, 294 flow [2024-10-12 00:05:42,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=77, PETRI_TRANSITIONS=58} [2024-10-12 00:05:42,774 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 32 predicate places. [2024-10-12 00:05:42,774 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 58 transitions, 294 flow [2024-10-12 00:05:42,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:42,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:42,775 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:42,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-12 00:05:42,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 00:05:42,976 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:05:42,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:42,976 INFO L85 PathProgramCache]: Analyzing trace with hash 154835784, now seen corresponding path program 2 times [2024-10-12 00:05:42,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:42,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035860184] [2024-10-12 00:05:42,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:42,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:05:43,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:43,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035860184] [2024-10-12 00:05:43,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035860184] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:43,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601532112] [2024-10-12 00:05:43,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:05:43,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:43,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:43,078 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:43,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 00:05:43,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:05:43,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:05:43,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-12 00:05:43,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:43,203 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 [2024-10-12 00:05:43,744 INFO L349 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2024-10-12 00:05:43,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 15 [2024-10-12 00:05:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:43,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:05:44,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2024-10-12 00:05:44,799 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-10-12 00:05:44,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 93 [2024-10-12 00:05:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:45,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601532112] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:05:45,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:05:45,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 12] total 30 [2024-10-12 00:05:45,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11637699] [2024-10-12 00:05:45,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:05:45,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-12 00:05:45,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:45,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-12 00:05:45,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2024-10-12 00:05:46,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 47 [2024-10-12 00:05:46,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 58 transitions, 294 flow. Second operand has 31 states, 31 states have (on average 10.258064516129032) internal successors, (318), 31 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:46,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:46,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 47 [2024-10-12 00:05:46,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:51,622 INFO L124 PetriNetUnfolderBase]: 2835/5267 cut-off events. [2024-10-12 00:05:51,622 INFO L125 PetriNetUnfolderBase]: For 10953/10953 co-relation queries the response was YES. [2024-10-12 00:05:51,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15789 conditions, 5267 events. 2835/5267 cut-off events. For 10953/10953 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 31747 event pairs, 185 based on Foata normal form. 366/5396 useless extension candidates. Maximal degree in co-relation 15767. Up to 966 conditions per place. [2024-10-12 00:05:51,652 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 395 selfloop transitions, 201 changer transitions 154/757 dead transitions. [2024-10-12 00:05:51,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 757 transitions, 4594 flow [2024-10-12 00:05:51,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-10-12 00:05:51,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2024-10-12 00:05:51,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 1557 transitions. [2024-10-12 00:05:51,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3312765957446808 [2024-10-12 00:05:51,657 INFO L175 Difference]: Start difference. First operand has 77 places, 58 transitions, 294 flow. Second operand 100 states and 1557 transitions. [2024-10-12 00:05:51,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 757 transitions, 4594 flow [2024-10-12 00:05:51,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 757 transitions, 4551 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:05:51,679 INFO L231 Difference]: Finished difference. Result has 212 places, 267 transitions, 2346 flow [2024-10-12 00:05:51,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=100, PETRI_FLOW=2346, PETRI_PLACES=212, PETRI_TRANSITIONS=267} [2024-10-12 00:05:51,680 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 167 predicate places. [2024-10-12 00:05:51,680 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 267 transitions, 2346 flow [2024-10-12 00:05:51,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.258064516129032) internal successors, (318), 31 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:51,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:51,681 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:51,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-12 00:05:51,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 00:05:51,885 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:05:51,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:51,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1754624489, now seen corresponding path program 1 times [2024-10-12 00:05:51,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:51,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142561843] [2024-10-12 00:05:51,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:51,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 00:05:51,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:51,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142561843] [2024-10-12 00:05:51,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142561843] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:51,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:51,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:05:51,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339790676] [2024-10-12 00:05:51,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:51,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:51,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:51,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:51,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:51,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-10-12 00:05:51,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 267 transitions, 2346 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:51,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:51,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-10-12 00:05:51,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:52,669 INFO L124 PetriNetUnfolderBase]: 2455/4721 cut-off events. [2024-10-12 00:05:52,670 INFO L125 PetriNetUnfolderBase]: For 50703/51041 co-relation queries the response was YES. [2024-10-12 00:05:52,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22378 conditions, 4721 events. 2455/4721 cut-off events. For 50703/51041 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 30814 event pairs, 272 based on Foata normal form. 178/4665 useless extension candidates. Maximal degree in co-relation 22316. Up to 2236 conditions per place. [2024-10-12 00:05:52,726 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 299 selfloop transitions, 4 changer transitions 0/323 dead transitions. [2024-10-12 00:05:52,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 323 transitions, 3569 flow [2024-10-12 00:05:52,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:05:52,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:05:52,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-10-12 00:05:52,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4946808510638298 [2024-10-12 00:05:52,728 INFO L175 Difference]: Start difference. First operand has 212 places, 267 transitions, 2346 flow. Second operand 4 states and 93 transitions. [2024-10-12 00:05:52,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 323 transitions, 3569 flow [2024-10-12 00:05:52,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 323 transitions, 2858 flow, removed 312 selfloop flow, removed 18 redundant places. [2024-10-12 00:05:52,827 INFO L231 Difference]: Finished difference. Result has 176 places, 256 transitions, 1701 flow [2024-10-12 00:05:52,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1678, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1701, PETRI_PLACES=176, PETRI_TRANSITIONS=256} [2024-10-12 00:05:52,827 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 131 predicate places. [2024-10-12 00:05:52,828 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 256 transitions, 1701 flow [2024-10-12 00:05:52,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:52,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:52,828 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:52,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 00:05:52,828 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:05:52,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:52,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1973371974, now seen corresponding path program 1 times [2024-10-12 00:05:52,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:52,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806946477] [2024-10-12 00:05:52,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:52,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:53,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:53,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806946477] [2024-10-12 00:05:53,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806946477] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:53,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788229867] [2024-10-12 00:05:53,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:53,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:53,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:53,453 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:53,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 00:05:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:53,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 00:05:53,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:53,988 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-12 00:05:53,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-10-12 00:05:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:54,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:05:54,169 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-10-12 00:05:54,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-10-12 00:05:54,792 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:54,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788229867] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:05:54,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:05:54,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2024-10-12 00:05:54,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374750167] [2024-10-12 00:05:54,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:05:54,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-12 00:05:54,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:54,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-12 00:05:54,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1736, Unknown=0, NotChecked=0, Total=1892 [2024-10-12 00:05:55,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-10-12 00:05:55,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 256 transitions, 1701 flow. Second operand has 44 states, 44 states have (on average 12.772727272727273) internal successors, (562), 44 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:55,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:55,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-10-12 00:05:55,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:04,233 INFO L124 PetriNetUnfolderBase]: 7388/14712 cut-off events. [2024-10-12 00:06:04,233 INFO L125 PetriNetUnfolderBase]: For 179645/180065 co-relation queries the response was YES. [2024-10-12 00:06:04,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67232 conditions, 14712 events. 7388/14712 cut-off events. For 179645/180065 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 110382 event pairs, 461 based on Foata normal form. 744/14736 useless extension candidates. Maximal degree in co-relation 67173. Up to 2612 conditions per place. [2024-10-12 00:06:04,433 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 666 selfloop transitions, 588 changer transitions 15/1292 dead transitions. [2024-10-12 00:06:04,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 1292 transitions, 11166 flow [2024-10-12 00:06:04,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-10-12 00:06:04,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2024-10-12 00:06:04,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 1870 transitions. [2024-10-12 00:06:04,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3718433088089083 [2024-10-12 00:06:04,450 INFO L175 Difference]: Start difference. First operand has 176 places, 256 transitions, 1701 flow. Second operand 107 states and 1870 transitions. [2024-10-12 00:06:04,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 1292 transitions, 11166 flow [2024-10-12 00:06:05,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 1292 transitions, 11160 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:05,222 INFO L231 Difference]: Finished difference. Result has 331 places, 841 transitions, 9314 flow [2024-10-12 00:06:05,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1672, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=107, PETRI_FLOW=9314, PETRI_PLACES=331, PETRI_TRANSITIONS=841} [2024-10-12 00:06:05,223 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 286 predicate places. [2024-10-12 00:06:05,224 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 841 transitions, 9314 flow [2024-10-12 00:06:05,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 12.772727272727273) internal successors, (562), 44 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:05,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:05,224 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:05,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-12 00:06:05,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:05,429 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:06:05,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:05,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1642519022, now seen corresponding path program 2 times [2024-10-12 00:06:05,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:05,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515398709] [2024-10-12 00:06:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:05,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:06,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:06,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515398709] [2024-10-12 00:06:06,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515398709] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:06,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414923800] [2024-10-12 00:06:06,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:06:06,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:06,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:06,031 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:06,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 00:06:06,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:06:06,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:06:06,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-12 00:06:06,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:06,179 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 [2024-10-12 00:06:06,526 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-12 00:06:06,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-10-12 00:06:06,556 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:06,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:07,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2024-10-12 00:06:07,364 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-10-12 00:06:07,365 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 55 treesize of output 47 [2024-10-12 00:06:07,539 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:07,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414923800] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:07,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:07,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 40 [2024-10-12 00:06:07,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611623809] [2024-10-12 00:06:07,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:07,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-12 00:06:07,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:07,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-12 00:06:07,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2024-10-12 00:06:08,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-10-12 00:06:08,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 841 transitions, 9314 flow. Second operand has 42 states, 42 states have (on average 12.857142857142858) internal successors, (540), 42 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:08,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:08,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-10-12 00:06:08,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:21,645 INFO L124 PetriNetUnfolderBase]: 10326/20608 cut-off events. [2024-10-12 00:06:21,646 INFO L125 PetriNetUnfolderBase]: For 836590/837234 co-relation queries the response was YES. [2024-10-12 00:06:21,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136975 conditions, 20608 events. 10326/20608 cut-off events. For 836590/837234 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 165072 event pairs, 1308 based on Foata normal form. 338/19940 useless extension candidates. Maximal degree in co-relation 136865. Up to 10192 conditions per place. [2024-10-12 00:06:21,994 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 1041 selfloop transitions, 560 changer transitions 44/1668 dead transitions. [2024-10-12 00:06:21,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 1668 transitions, 22106 flow [2024-10-12 00:06:21,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-10-12 00:06:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2024-10-12 00:06:21,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 1275 transitions. [2024-10-12 00:06:21,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3716117749927135 [2024-10-12 00:06:21,997 INFO L175 Difference]: Start difference. First operand has 331 places, 841 transitions, 9314 flow. Second operand 73 states and 1275 transitions. [2024-10-12 00:06:21,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 1668 transitions, 22106 flow [2024-10-12 00:06:28,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 1668 transitions, 18482 flow, removed 1778 selfloop flow, removed 19 redundant places. [2024-10-12 00:06:28,185 INFO L231 Difference]: Finished difference. Result has 425 places, 1212 transitions, 13708 flow [2024-10-12 00:06:28,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7437, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=13708, PETRI_PLACES=425, PETRI_TRANSITIONS=1212} [2024-10-12 00:06:28,186 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 380 predicate places. [2024-10-12 00:06:28,186 INFO L471 AbstractCegarLoop]: Abstraction has has 425 places, 1212 transitions, 13708 flow [2024-10-12 00:06:28,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 12.857142857142858) internal successors, (540), 42 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:28,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:28,187 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:28,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-12 00:06:28,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:28,388 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:06:28,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:28,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2009883110, now seen corresponding path program 3 times [2024-10-12 00:06:28,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:28,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976775115] [2024-10-12 00:06:28,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:28,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:28,968 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:28,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:28,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976775115] [2024-10-12 00:06:28,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976775115] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:28,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117320905] [2024-10-12 00:06:28,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 00:06:28,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:28,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:28,970 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:28,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 00:06:29,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-12 00:06:29,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:06:29,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 00:06:29,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:29,178 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:06:29,178 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:29,225 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:06:29,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2024-10-12 00:06:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:06:29,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117320905] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:29,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:29,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 22 [2024-10-12 00:06:29,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873402277] [2024-10-12 00:06:29,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:29,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-12 00:06:29,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:29,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-12 00:06:29,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2024-10-12 00:06:29,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-12 00:06:29,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 1212 transitions, 13708 flow. Second operand has 24 states, 24 states have (on average 15.375) internal successors, (369), 24 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:29,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:29,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-12 00:06:29,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:39,953 INFO L124 PetriNetUnfolderBase]: 12825/25455 cut-off events. [2024-10-12 00:06:39,954 INFO L125 PetriNetUnfolderBase]: For 1183224/1183898 co-relation queries the response was YES. [2024-10-12 00:06:40,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164409 conditions, 25455 events. 12825/25455 cut-off events. For 1183224/1183898 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 209722 event pairs, 1865 based on Foata normal form. 310/24465 useless extension candidates. Maximal degree in co-relation 164264. Up to 13207 conditions per place. [2024-10-12 00:06:40,388 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 1323 selfloop transitions, 440 changer transitions 31/1817 dead transitions. [2024-10-12 00:06:40,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1817 transitions, 24296 flow [2024-10-12 00:06:40,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-12 00:06:40,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-10-12 00:06:40,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 697 transitions. [2024-10-12 00:06:40,391 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44938749194068345 [2024-10-12 00:06:40,391 INFO L175 Difference]: Start difference. First operand has 425 places, 1212 transitions, 13708 flow. Second operand 33 states and 697 transitions. [2024-10-12 00:06:40,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1817 transitions, 24296 flow [2024-10-12 00:06:47,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 1817 transitions, 22621 flow, removed 815 selfloop flow, removed 19 redundant places. [2024-10-12 00:06:47,711 INFO L231 Difference]: Finished difference. Result has 447 places, 1450 transitions, 17838 flow [2024-10-12 00:06:47,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=12815, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=856, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=17838, PETRI_PLACES=447, PETRI_TRANSITIONS=1450} [2024-10-12 00:06:47,713 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 402 predicate places. [2024-10-12 00:06:47,713 INFO L471 AbstractCegarLoop]: Abstraction has has 447 places, 1450 transitions, 17838 flow [2024-10-12 00:06:47,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.375) internal successors, (369), 24 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:47,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:47,713 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:47,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-12 00:06:47,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-12 00:06:47,914 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:06:47,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:47,915 INFO L85 PathProgramCache]: Analyzing trace with hash -936414798, now seen corresponding path program 4 times [2024-10-12 00:06:47,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:47,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330696059] [2024-10-12 00:06:47,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:47,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:48,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:48,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330696059] [2024-10-12 00:06:48,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330696059] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:48,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985148133] [2024-10-12 00:06:48,480 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 00:06:48,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:48,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:48,481 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:48,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-12 00:06:48,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 00:06:48,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:06:48,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-12 00:06:48,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:48,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-12 00:06:49,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-12 00:06:49,299 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-12 00:06:49,301 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:06:49,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 15 [2024-10-12 00:06:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:49,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:50,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 70 [2024-10-12 00:06:50,067 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-10-12 00:06:50,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 137 treesize of output 135 [2024-10-12 00:06:50,716 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:50,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985148133] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:50,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:50,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 44 [2024-10-12 00:06:50,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039337321] [2024-10-12 00:06:50,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:50,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-10-12 00:06:50,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:50,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-10-12 00:06:50,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1863, Unknown=0, NotChecked=0, Total=2070 [2024-10-12 00:06:52,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-10-12 00:06:52,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 1450 transitions, 17838 flow. Second operand has 46 states, 46 states have (on average 12.695652173913043) internal successors, (584), 46 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:52,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:52,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-10-12 00:06:52,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand