./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:47:24,760 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:47:24,820 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:47:24,824 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:47:24,826 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:47:24,862 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:47:24,865 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:47:24,865 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:47:24,866 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:47:24,867 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:47:24,868 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:47:24,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:47:24,869 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:47:24,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:47:24,869 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:47:24,871 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:47:24,871 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:47:24,872 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:47:24,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:47:24,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:47:24,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:47:24,877 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:47:24,878 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:47:24,878 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:47:24,878 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:47:24,878 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:47:24,879 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:47:24,879 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:47:24,879 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:47:24,879 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:47:24,879 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:47:24,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:47:24,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:47:24,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:47:24,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:47:24,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:47:24,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:47:24,883 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:47:24,883 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:47:24,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:47:24,884 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:47:24,884 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:47:24,884 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:47:24,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:47:24,885 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 [2024-11-12 20:47:25,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:47:25,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:47:25,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:47:25,180 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:47:25,181 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:47:25,182 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2024-11-12 20:47:26,662 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:47:26,831 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:47:26,832 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2024-11-12 20:47:26,839 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10849f008/60a57c88327741c1b4c640e9d156a35b/FLAG8d2801072 [2024-11-12 20:47:26,852 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10849f008/60a57c88327741c1b4c640e9d156a35b [2024-11-12 20:47:26,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:47:26,855 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:47:26,859 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:47:26,859 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:47:26,864 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:47:26,865 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:47:26" (1/1) ... [2024-11-12 20:47:26,866 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df0c6bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:26, skipping insertion in model container [2024-11-12 20:47:26,866 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:47:26" (1/1) ... [2024-11-12 20:47:26,902 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:47:27,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:47:27,152 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:47:27,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:47:27,210 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:47:27,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:27 WrapperNode [2024-11-12 20:47:27,211 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:47:27,212 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:47:27,212 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:47:27,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:47:27,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:27" (1/1) ... [2024-11-12 20:47:27,228 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:27" (1/1) ... [2024-11-12 20:47:27,249 INFO L138 Inliner]: procedures = 23, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 94 [2024-11-12 20:47:27,250 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:47:27,251 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:47:27,251 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:47:27,251 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:47:27,262 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:27" (1/1) ... [2024-11-12 20:47:27,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:27" (1/1) ... [2024-11-12 20:47:27,265 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:27" (1/1) ... [2024-11-12 20:47:27,283 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 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]. [2024-11-12 20:47:27,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:27" (1/1) ... [2024-11-12 20:47:27,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:27" (1/1) ... [2024-11-12 20:47:27,291 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:27" (1/1) ... [2024-11-12 20:47:27,295 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:27" (1/1) ... [2024-11-12 20:47:27,296 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:27" (1/1) ... [2024-11-12 20:47:27,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:27" (1/1) ... [2024-11-12 20:47:27,302 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:47:27,303 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:47:27,303 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:47:27,303 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:47:27,304 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:27" (1/1) ... [2024-11-12 20:47:27,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:47:27,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:27,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 20:47:27,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 20:47:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:47:27,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 20:47:27,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 20:47:27,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 20:47:27,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 20:47:27,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 20:47:27,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 20:47:27,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:47:27,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:47:27,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 20:47:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 20:47:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 20:47:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:47:27,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:47:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:47:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 20:47:27,414 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:47:27,528 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:47:27,530 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:47:27,841 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:47:27,841 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:47:28,056 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:47:28,056 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-12 20:47:28,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:47:28 BoogieIcfgContainer [2024-11-12 20:47:28,057 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:47:28,060 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:47:28,060 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:47:28,064 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:47:28,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:47:26" (1/3) ... [2024-11-12 20:47:28,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513003aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:47:28, skipping insertion in model container [2024-11-12 20:47:28,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:27" (2/3) ... [2024-11-12 20:47:28,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513003aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:47:28, skipping insertion in model container [2024-11-12 20:47:28,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:47:28" (3/3) ... [2024-11-12 20:47:28,067 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2024-11-12 20:47:28,086 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:47:28,087 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-12 20:47:28,087 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:47:28,167 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 20:47:28,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 74 transitions, 169 flow [2024-11-12 20:47:28,252 INFO L124 PetriNetUnfolderBase]: 9/71 cut-off events. [2024-11-12 20:47:28,253 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 20:47:28,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 71 events. 9/71 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 228 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2024-11-12 20:47:28,259 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 74 transitions, 169 flow [2024-11-12 20:47:28,263 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 69 transitions, 153 flow [2024-11-12 20:47:28,272 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:47:28,278 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;@1fa32bb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:47:28,279 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-11-12 20:47:28,282 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:47:28,283 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-12 20:47:28,283 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:47:28,283 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:28,284 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 20:47:28,284 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:47:28,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:28,291 INFO L85 PathProgramCache]: Analyzing trace with hash 484405, now seen corresponding path program 1 times [2024-11-12 20:47:28,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:28,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53408836] [2024-11-12 20:47:28,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:28,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:28,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:28,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:28,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53408836] [2024-11-12 20:47:28,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53408836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:28,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:28,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:47:28,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297581922] [2024-11-12 20:47:28,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:28,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:47:28,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:28,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:47:28,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:47:28,631 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-12 20:47:28,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:28,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:28,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-12 20:47:28,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:29,265 INFO L124 PetriNetUnfolderBase]: 2215/4004 cut-off events. [2024-11-12 20:47:29,266 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2024-11-12 20:47:29,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7191 conditions, 4004 events. 2215/4004 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 28433 event pairs, 1556 based on Foata normal form. 213/3533 useless extension candidates. Maximal degree in co-relation 6763. Up to 3019 conditions per place. [2024-11-12 20:47:29,314 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 30 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-11-12 20:47:29,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 215 flow [2024-11-12 20:47:29,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:47:29,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:47:29,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-11-12 20:47:29,328 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.597972972972973 [2024-11-12 20:47:29,331 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 153 flow. Second operand 4 states and 177 transitions. [2024-11-12 20:47:29,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 215 flow [2024-11-12 20:47:29,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 206 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-12 20:47:29,348 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 146 flow [2024-11-12 20:47:29,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-11-12 20:47:29,357 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, -3 predicate places. [2024-11-12 20:47:29,358 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 146 flow [2024-11-12 20:47:29,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:29,359 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:29,359 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-12 20:47:29,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:47:29,360 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:47:29,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:29,361 INFO L85 PathProgramCache]: Analyzing trace with hash 15017067, now seen corresponding path program 1 times [2024-11-12 20:47:29,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:29,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093347003] [2024-11-12 20:47:29,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:29,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:29,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:29,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:29,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093347003] [2024-11-12 20:47:29,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093347003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:29,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:29,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:47:29,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719632124] [2024-11-12 20:47:29,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:29,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:47:29,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:29,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:47:29,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:47:29,486 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-12 20:47:29,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:29,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:29,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-12 20:47:29,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:29,938 INFO L124 PetriNetUnfolderBase]: 2216/4008 cut-off events. [2024-11-12 20:47:29,939 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-12 20:47:29,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7139 conditions, 4008 events. 2216/4008 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 28429 event pairs, 1556 based on Foata normal form. 1/3325 useless extension candidates. Maximal degree in co-relation 7111. Up to 3024 conditions per place. [2024-11-12 20:47:29,968 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 33 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2024-11-12 20:47:29,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 232 flow [2024-11-12 20:47:29,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:47:29,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:47:29,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 178 transitions. [2024-11-12 20:47:29,973 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6013513513513513 [2024-11-12 20:47:29,974 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 146 flow. Second operand 4 states and 178 transitions. [2024-11-12 20:47:29,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 232 flow [2024-11-12 20:47:29,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:47:29,978 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 165 flow [2024-11-12 20:47:29,978 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2024-11-12 20:47:29,980 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2024-11-12 20:47:29,980 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 165 flow [2024-11-12 20:47:29,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:29,980 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:29,980 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 20:47:29,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 20:47:29,981 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:47:29,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:29,982 INFO L85 PathProgramCache]: Analyzing trace with hash 465640491, now seen corresponding path program 1 times [2024-11-12 20:47:29,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:29,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823252068] [2024-11-12 20:47:29,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:29,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:30,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:30,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:30,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823252068] [2024-11-12 20:47:30,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823252068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:30,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:30,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:47:30,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374001580] [2024-11-12 20:47:30,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:30,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:47:30,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:30,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:47:30,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:47:30,112 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-12 20:47:30,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:30,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:30,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-12 20:47:30,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:30,650 INFO L124 PetriNetUnfolderBase]: 2824/4943 cut-off events. [2024-11-12 20:47:30,651 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-12 20:47:30,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8926 conditions, 4943 events. 2824/4943 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 35560 event pairs, 2043 based on Foata normal form. 240/4410 useless extension candidates. Maximal degree in co-relation 8900. Up to 3853 conditions per place. [2024-11-12 20:47:30,696 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 36 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-11-12 20:47:30,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 237 flow [2024-11-12 20:47:30,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:47:30,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:47:30,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-11-12 20:47:30,698 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6126126126126126 [2024-11-12 20:47:30,698 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 165 flow. Second operand 3 states and 136 transitions. [2024-11-12 20:47:30,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 237 flow [2024-11-12 20:47:30,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:47:30,703 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 162 flow [2024-11-12 20:47:30,703 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2024-11-12 20:47:30,704 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, -2 predicate places. [2024-11-12 20:47:30,704 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 162 flow [2024-11-12 20:47:30,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:30,705 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:30,705 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 20:47:30,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 20:47:30,705 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:47:30,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:30,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1549953863, now seen corresponding path program 1 times [2024-11-12 20:47:30,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:30,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855367193] [2024-11-12 20:47:30,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:30,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:30,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:30,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855367193] [2024-11-12 20:47:30,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855367193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:30,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:30,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 20:47:30,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188045746] [2024-11-12 20:47:30,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:30,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:47:30,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:30,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:47:30,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:47:30,790 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-12 20:47:30,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:30,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:30,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-12 20:47:30,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:31,133 INFO L124 PetriNetUnfolderBase]: 2216/3936 cut-off events. [2024-11-12 20:47:31,133 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-12 20:47:31,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7072 conditions, 3936 events. 2216/3936 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 27345 event pairs, 1556 based on Foata normal form. 169/3495 useless extension candidates. Maximal degree in co-relation 7046. Up to 3024 conditions per place. [2024-11-12 20:47:31,153 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 35 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2024-11-12 20:47:31,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 65 transitions, 230 flow [2024-11-12 20:47:31,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:47:31,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:47:31,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-11-12 20:47:31,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6036036036036037 [2024-11-12 20:47:31,156 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 162 flow. Second operand 3 states and 134 transitions. [2024-11-12 20:47:31,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 65 transitions, 230 flow [2024-11-12 20:47:31,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:47:31,158 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 158 flow [2024-11-12 20:47:31,158 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2024-11-12 20:47:31,159 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, -3 predicate places. [2024-11-12 20:47:31,159 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 158 flow [2024-11-12 20:47:31,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:31,160 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:31,160 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-12 20:47:31,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:47:31,161 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:47:31,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:31,162 INFO L85 PathProgramCache]: Analyzing trace with hash 697353063, now seen corresponding path program 1 times [2024-11-12 20:47:31,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:31,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026573080] [2024-11-12 20:47:31,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:31,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:31,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:31,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026573080] [2024-11-12 20:47:31,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026573080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:31,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026507408] [2024-11-12 20:47:31,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:31,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:31,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:31,249 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:31,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:47:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:31,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:47:31,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:31,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:31,380 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:31,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026507408] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:31,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:31,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-12 20:47:31,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043078230] [2024-11-12 20:47:31,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:31,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:47:31,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:31,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:47:31,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:47:31,440 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-12 20:47:31,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 158 flow. Second operand has 10 states, 10 states have (on average 36.0) internal successors, (360), 10 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:31,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:31,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-12 20:47:31,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:31,867 INFO L124 PetriNetUnfolderBase]: 2219/3948 cut-off events. [2024-11-12 20:47:31,867 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-12 20:47:31,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7107 conditions, 3948 events. 2219/3948 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 27481 event pairs, 1556 based on Foata normal form. 0/3333 useless extension candidates. Maximal degree in co-relation 7098. Up to 3027 conditions per place. [2024-11-12 20:47:31,891 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 33 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2024-11-12 20:47:31,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 289 flow [2024-11-12 20:47:31,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:47:31,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:47:31,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 399 transitions. [2024-11-12 20:47:31,894 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5391891891891892 [2024-11-12 20:47:31,894 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 158 flow. Second operand 10 states and 399 transitions. [2024-11-12 20:47:31,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 289 flow [2024-11-12 20:47:31,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:47:31,899 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 240 flow [2024-11-12 20:47:31,899 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=240, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2024-11-12 20:47:31,900 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2024-11-12 20:47:31,902 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 240 flow [2024-11-12 20:47:31,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 36.0) internal successors, (360), 10 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:31,903 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:31,903 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:31,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 20:47:32,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:32,104 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:47:32,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:32,105 INFO L85 PathProgramCache]: Analyzing trace with hash -517338320, now seen corresponding path program 1 times [2024-11-12 20:47:32,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:32,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250439894] [2024-11-12 20:47:32,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:32,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:32,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:32,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:32,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250439894] [2024-11-12 20:47:32,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250439894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:32,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:32,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:47:32,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765891047] [2024-11-12 20:47:32,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:32,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:47:32,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:32,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:47:32,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:47:32,164 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-12 20:47:32,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:32,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:32,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-12 20:47:32,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:32,898 INFO L124 PetriNetUnfolderBase]: 4355/7589 cut-off events. [2024-11-12 20:47:32,898 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-11-12 20:47:32,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13717 conditions, 7589 events. 4355/7589 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 53474 event pairs, 1838 based on Foata normal form. 100/6702 useless extension candidates. Maximal degree in co-relation 13704. Up to 4020 conditions per place. [2024-11-12 20:47:32,961 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 69 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-11-12 20:47:32,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 99 transitions, 437 flow [2024-11-12 20:47:32,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:47:32,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:47:32,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 167 transitions. [2024-11-12 20:47:32,963 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7522522522522522 [2024-11-12 20:47:32,963 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 240 flow. Second operand 3 states and 167 transitions. [2024-11-12 20:47:32,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 99 transitions, 437 flow [2024-11-12 20:47:32,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 99 transitions, 407 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-12 20:47:32,968 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 231 flow [2024-11-12 20:47:32,969 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2024-11-12 20:47:32,971 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2024-11-12 20:47:32,972 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 231 flow [2024-11-12 20:47:32,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:32,973 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:32,973 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:32,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 20:47:32,973 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:47:32,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:32,974 INFO L85 PathProgramCache]: Analyzing trace with hash -667442228, now seen corresponding path program 1 times [2024-11-12 20:47:32,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:32,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646624239] [2024-11-12 20:47:32,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:32,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:33,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:33,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646624239] [2024-11-12 20:47:33,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646624239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:33,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:33,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:47:33,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186321190] [2024-11-12 20:47:33,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:33,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:47:33,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:33,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:47:33,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:47:33,037 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-12 20:47:33,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:33,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:33,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-12 20:47:33,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:34,019 INFO L124 PetriNetUnfolderBase]: 7378/12569 cut-off events. [2024-11-12 20:47:34,020 INFO L125 PetriNetUnfolderBase]: For 1448/1448 co-relation queries the response was YES. [2024-11-12 20:47:34,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24160 conditions, 12569 events. 7378/12569 cut-off events. For 1448/1448 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 95092 event pairs, 3209 based on Foata normal form. 187/11198 useless extension candidates. Maximal degree in co-relation 24147. Up to 6545 conditions per place. [2024-11-12 20:47:34,110 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 72 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2024-11-12 20:47:34,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 102 transitions, 449 flow [2024-11-12 20:47:34,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:47:34,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:47:34,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-11-12 20:47:34,112 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7477477477477478 [2024-11-12 20:47:34,112 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 231 flow. Second operand 3 states and 166 transitions. [2024-11-12 20:47:34,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 102 transitions, 449 flow [2024-11-12 20:47:34,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 102 transitions, 443 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:47:34,117 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 249 flow [2024-11-12 20:47:34,117 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2024-11-12 20:47:34,118 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 10 predicate places. [2024-11-12 20:47:34,118 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 249 flow [2024-11-12 20:47:34,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:34,118 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:34,119 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:34,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 20:47:34,119 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:47:34,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:34,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1142380780, now seen corresponding path program 1 times [2024-11-12 20:47:34,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:34,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228059315] [2024-11-12 20:47:34,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:34,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:34,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:34,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228059315] [2024-11-12 20:47:34,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228059315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:34,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:34,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:47:34,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559554009] [2024-11-12 20:47:34,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:34,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:47:34,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:34,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:47:34,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:47:34,185 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-12 20:47:34,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:34,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:34,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-12 20:47:34,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:35,421 INFO L124 PetriNetUnfolderBase]: 8774/14414 cut-off events. [2024-11-12 20:47:35,421 INFO L125 PetriNetUnfolderBase]: For 2828/2828 co-relation queries the response was YES. [2024-11-12 20:47:35,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29733 conditions, 14414 events. 8774/14414 cut-off events. For 2828/2828 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 103700 event pairs, 3895 based on Foata normal form. 388/13888 useless extension candidates. Maximal degree in co-relation 29719. Up to 8380 conditions per place. [2024-11-12 20:47:35,536 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 95 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2024-11-12 20:47:35,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 571 flow [2024-11-12 20:47:35,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:47:35,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:47:35,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 215 transitions. [2024-11-12 20:47:35,538 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7263513513513513 [2024-11-12 20:47:35,538 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 249 flow. Second operand 4 states and 215 transitions. [2024-11-12 20:47:35,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 571 flow [2024-11-12 20:47:35,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 124 transitions, 562 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:47:35,543 INFO L231 Difference]: Finished difference. Result has 84 places, 79 transitions, 267 flow [2024-11-12 20:47:35,544 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=84, PETRI_TRANSITIONS=79} [2024-11-12 20:47:35,544 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 14 predicate places. [2024-11-12 20:47:35,545 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 79 transitions, 267 flow [2024-11-12 20:47:35,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:35,545 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:35,545 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:35,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 20:47:35,546 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:47:35,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:35,546 INFO L85 PathProgramCache]: Analyzing trace with hash 784126942, now seen corresponding path program 1 times [2024-11-12 20:47:35,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:35,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48104762] [2024-11-12 20:47:35,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:35,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:35,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:35,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48104762] [2024-11-12 20:47:35,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48104762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:35,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:35,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:47:35,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966322506] [2024-11-12 20:47:35,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:35,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:47:35,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:35,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:47:35,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:47:35,627 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-12 20:47:35,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 79 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:35,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:35,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-12 20:47:35,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:36,664 INFO L124 PetriNetUnfolderBase]: 8473/13129 cut-off events. [2024-11-12 20:47:36,665 INFO L125 PetriNetUnfolderBase]: For 6051/6051 co-relation queries the response was YES. [2024-11-12 20:47:36,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29889 conditions, 13129 events. 8473/13129 cut-off events. For 6051/6051 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 89388 event pairs, 4257 based on Foata normal form. 398/12963 useless extension candidates. Maximal degree in co-relation 29873. Up to 8077 conditions per place. [2024-11-12 20:47:37,059 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 96 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2024-11-12 20:47:37,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 125 transitions, 615 flow [2024-11-12 20:47:37,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:47:37,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:47:37,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 213 transitions. [2024-11-12 20:47:37,061 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7195945945945946 [2024-11-12 20:47:37,061 INFO L175 Difference]: Start difference. First operand has 84 places, 79 transitions, 267 flow. Second operand 4 states and 213 transitions. [2024-11-12 20:47:37,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 125 transitions, 615 flow [2024-11-12 20:47:37,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 125 transitions, 597 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:47:37,068 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 282 flow [2024-11-12 20:47:37,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2024-11-12 20:47:37,071 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 17 predicate places. [2024-11-12 20:47:37,073 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 282 flow [2024-11-12 20:47:37,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:37,073 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:37,073 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:37,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 20:47:37,075 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:47:37,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:37,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1659467330, now seen corresponding path program 1 times [2024-11-12 20:47:37,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:37,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129258577] [2024-11-12 20:47:37,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:37,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:37,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:37,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129258577] [2024-11-12 20:47:37,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129258577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:37,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:37,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:47:37,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741221740] [2024-11-12 20:47:37,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:37,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:47:37,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:37,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:47:37,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:47:37,149 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-12 20:47:37,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:37,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:37,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-12 20:47:37,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:38,678 INFO L124 PetriNetUnfolderBase]: 13236/21535 cut-off events. [2024-11-12 20:47:38,679 INFO L125 PetriNetUnfolderBase]: For 11701/11701 co-relation queries the response was YES. [2024-11-12 20:47:38,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49443 conditions, 21535 events. 13236/21535 cut-off events. For 11701/11701 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 162624 event pairs, 5536 based on Foata normal form. 301/20241 useless extension candidates. Maximal degree in co-relation 49425. Up to 10740 conditions per place. [2024-11-12 20:47:38,828 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 74 selfloop transitions, 9 changer transitions 0/110 dead transitions. [2024-11-12 20:47:38,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 110 transitions, 554 flow [2024-11-12 20:47:38,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:47:38,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:47:38,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-11-12 20:47:38,946 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-11-12 20:47:38,946 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 282 flow. Second operand 4 states and 200 transitions. [2024-11-12 20:47:38,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 110 transitions, 554 flow [2024-11-12 20:47:39,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 110 transitions, 542 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:47:39,020 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 321 flow [2024-11-12 20:47:39,020 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=321, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-11-12 20:47:39,022 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 20 predicate places. [2024-11-12 20:47:39,022 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 321 flow [2024-11-12 20:47:39,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:39,023 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:39,023 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:39,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 20:47:39,023 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:47:39,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:39,024 INFO L85 PathProgramCache]: Analyzing trace with hash -96120772, now seen corresponding path program 1 times [2024-11-12 20:47:39,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:39,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999365806] [2024-11-12 20:47:39,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:39,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:39,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:39,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:39,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999365806] [2024-11-12 20:47:39,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999365806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:39,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:39,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:47:39,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403557163] [2024-11-12 20:47:39,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:39,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:47:39,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:39,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:47:39,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:47:39,104 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 74 [2024-11-12 20:47:39,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:39,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:39,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 74 [2024-11-12 20:47:39,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:40,522 INFO L124 PetriNetUnfolderBase]: 12036/19437 cut-off events. [2024-11-12 20:47:40,523 INFO L125 PetriNetUnfolderBase]: For 11581/11581 co-relation queries the response was YES. [2024-11-12 20:47:40,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47384 conditions, 19437 events. 12036/19437 cut-off events. For 11581/11581 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 144463 event pairs, 8064 based on Foata normal form. 1/18116 useless extension candidates. Maximal degree in co-relation 47364. Up to 15502 conditions per place. [2024-11-12 20:47:40,663 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 50 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2024-11-12 20:47:40,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 82 transitions, 417 flow [2024-11-12 20:47:40,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:47:40,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:47:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-11-12 20:47:40,665 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6621621621621622 [2024-11-12 20:47:40,665 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 321 flow. Second operand 3 states and 147 transitions. [2024-11-12 20:47:40,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 82 transitions, 417 flow [2024-11-12 20:47:40,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 82 transitions, 413 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:47:40,733 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 313 flow [2024-11-12 20:47:40,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2024-11-12 20:47:40,734 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 21 predicate places. [2024-11-12 20:47:40,734 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 313 flow [2024-11-12 20:47:40,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:40,734 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:40,734 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-12 20:47:40,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 20:47:40,735 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:47:40,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:40,735 INFO L85 PathProgramCache]: Analyzing trace with hash 549183851, now seen corresponding path program 2 times [2024-11-12 20:47:40,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:40,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773025663] [2024-11-12 20:47:40,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:40,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:40,890 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:40,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:40,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773025663] [2024-11-12 20:47:40,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773025663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:40,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119775572] [2024-11-12 20:47:40,891 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:47:40,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:40,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:40,893 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:40,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:47:40,967 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:47:40,967 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:47:40,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 20:47:40,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:41,020 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:47:41,020 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:41,058 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:47:41,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119775572] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:41,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:41,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-12 20:47:41,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230944766] [2024-11-12 20:47:41,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:41,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 20:47:41,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:41,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 20:47:41,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-12 20:47:41,074 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-12 20:47:41,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 82 transitions, 313 flow. Second operand has 14 states, 14 states have (on average 36.142857142857146) internal successors, (506), 14 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:41,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:41,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-12 20:47:41,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:42,770 INFO L124 PetriNetUnfolderBase]: 12037/19440 cut-off events. [2024-11-12 20:47:42,770 INFO L125 PetriNetUnfolderBase]: For 11595/11595 co-relation queries the response was YES. [2024-11-12 20:47:42,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47394 conditions, 19440 events. 12037/19440 cut-off events. For 11595/11595 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 144596 event pairs, 8064 based on Foata normal form. 2/18120 useless extension candidates. Maximal degree in co-relation 47373. Up to 15494 conditions per place. [2024-11-12 20:47:42,901 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 37 selfloop transitions, 18 changer transitions 0/84 dead transitions. [2024-11-12 20:47:42,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 84 transitions, 430 flow [2024-11-12 20:47:42,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 20:47:42,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 20:47:42,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 539 transitions. [2024-11-12 20:47:42,903 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2024-11-12 20:47:42,903 INFO L175 Difference]: Start difference. First operand has 91 places, 82 transitions, 313 flow. Second operand 14 states and 539 transitions. [2024-11-12 20:47:42,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 84 transitions, 430 flow [2024-11-12 20:47:42,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 84 transitions, 414 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-12 20:47:42,967 INFO L231 Difference]: Finished difference. Result has 97 places, 84 transitions, 340 flow [2024-11-12 20:47:42,967 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=340, PETRI_PLACES=97, PETRI_TRANSITIONS=84} [2024-11-12 20:47:42,968 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 27 predicate places. [2024-11-12 20:47:42,968 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 84 transitions, 340 flow [2024-11-12 20:47:42,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 36.142857142857146) internal successors, (506), 14 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:42,969 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:42,969 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:42,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 20:47:43,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-12 20:47:43,176 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:47:43,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:43,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1084449848, now seen corresponding path program 1 times [2024-11-12 20:47:43,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:43,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384821237] [2024-11-12 20:47:43,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:43,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:43,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:47:43,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:43,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384821237] [2024-11-12 20:47:43,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384821237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:43,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:43,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:47:43,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118272031] [2024-11-12 20:47:43,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:43,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:47:43,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:43,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:47:43,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:47:43,265 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-12 20:47:43,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 84 transitions, 340 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:43,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:43,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-12 20:47:43,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:44,612 INFO L124 PetriNetUnfolderBase]: 13530/21870 cut-off events. [2024-11-12 20:47:44,612 INFO L125 PetriNetUnfolderBase]: For 14387/14387 co-relation queries the response was YES. [2024-11-12 20:47:44,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52388 conditions, 21870 events. 13530/21870 cut-off events. For 14387/14387 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 162136 event pairs, 1616 based on Foata normal form. 903/22649 useless extension candidates. Maximal degree in co-relation 52371. Up to 9647 conditions per place. [2024-11-12 20:47:44,726 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 93 selfloop transitions, 11 changer transitions 0/128 dead transitions. [2024-11-12 20:47:44,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 128 transitions, 714 flow [2024-11-12 20:47:44,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:47:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:47:44,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 236 transitions. [2024-11-12 20:47:44,727 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6378378378378379 [2024-11-12 20:47:44,727 INFO L175 Difference]: Start difference. First operand has 97 places, 84 transitions, 340 flow. Second operand 5 states and 236 transitions. [2024-11-12 20:47:44,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 128 transitions, 714 flow [2024-11-12 20:47:44,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 128 transitions, 654 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-11-12 20:47:44,756 INFO L231 Difference]: Finished difference. Result has 88 places, 82 transitions, 296 flow [2024-11-12 20:47:44,757 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=88, PETRI_TRANSITIONS=82} [2024-11-12 20:47:44,757 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 18 predicate places. [2024-11-12 20:47:44,757 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 82 transitions, 296 flow [2024-11-12 20:47:44,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:44,758 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:44,758 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:44,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 20:47:44,758 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:47:44,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:44,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1084450873, now seen corresponding path program 1 times [2024-11-12 20:47:44,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:44,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428928842] [2024-11-12 20:47:44,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:44,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:44,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:44,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:44,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428928842] [2024-11-12 20:47:44,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428928842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:44,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:44,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:47:44,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359231038] [2024-11-12 20:47:44,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:44,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:47:44,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:44,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:47:44,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:47:44,826 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 74 [2024-11-12 20:47:44,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:44,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:44,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 74 [2024-11-12 20:47:44,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:46,462 INFO L124 PetriNetUnfolderBase]: 12229/20152 cut-off events. [2024-11-12 20:47:46,463 INFO L125 PetriNetUnfolderBase]: For 17075/17075 co-relation queries the response was YES. [2024-11-12 20:47:46,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49713 conditions, 20152 events. 12229/20152 cut-off events. For 17075/17075 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 151686 event pairs, 4304 based on Foata normal form. 602/19840 useless extension candidates. Maximal degree in co-relation 49699. Up to 8354 conditions per place. [2024-11-12 20:47:46,568 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 75 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2024-11-12 20:47:46,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 103 transitions, 530 flow [2024-11-12 20:47:46,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:47:46,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:47:46,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2024-11-12 20:47:46,569 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-11-12 20:47:46,569 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 296 flow. Second operand 4 states and 172 transitions. [2024-11-12 20:47:46,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 103 transitions, 530 flow [2024-11-12 20:47:46,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 103 transitions, 492 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-12 20:47:46,612 INFO L231 Difference]: Finished difference. Result has 84 places, 80 transitions, 256 flow [2024-11-12 20:47:46,612 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=84, PETRI_TRANSITIONS=80} [2024-11-12 20:47:46,612 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 14 predicate places. [2024-11-12 20:47:46,612 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 80 transitions, 256 flow [2024-11-12 20:47:46,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:46,613 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:46,613 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:46,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 20:47:46,613 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:47:46,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:46,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1639398897, now seen corresponding path program 1 times [2024-11-12 20:47:46,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:46,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114317662] [2024-11-12 20:47:46,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:46,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:46,670 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:47:46,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:46,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114317662] [2024-11-12 20:47:46,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114317662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:46,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224110921] [2024-11-12 20:47:46,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:46,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:46,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:46,673 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:46,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:47:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:46,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 20:47:46,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:46,829 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:46,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:46,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224110921] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:46,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:46,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 15 [2024-11-12 20:47:46,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770632110] [2024-11-12 20:47:46,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:46,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 20:47:46,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:46,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 20:47:46,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-12 20:47:47,149 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 74 [2024-11-12 20:47:47,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 80 transitions, 256 flow. Second operand has 15 states, 15 states have (on average 29.466666666666665) internal successors, (442), 15 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:47,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:47,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 74 [2024-11-12 20:47:47,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:50,029 INFO L124 PetriNetUnfolderBase]: 23701/36142 cut-off events. [2024-11-12 20:47:50,029 INFO L125 PetriNetUnfolderBase]: For 21939/21939 co-relation queries the response was YES. [2024-11-12 20:47:50,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89137 conditions, 36142 events. 23701/36142 cut-off events. For 21939/21939 co-relation queries the response was YES. Maximal size of possible extension queue 1045. Compared 263706 event pairs, 7241 based on Foata normal form. 648/36330 useless extension candidates. Maximal degree in co-relation 89123. Up to 11837 conditions per place. [2024-11-12 20:47:50,498 INFO L140 encePairwiseOnDemand]: 63/74 looper letters, 194 selfloop transitions, 22 changer transitions 0/237 dead transitions. [2024-11-12 20:47:50,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 237 transitions, 1252 flow [2024-11-12 20:47:50,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 20:47:50,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-12 20:47:50,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 498 transitions. [2024-11-12 20:47:50,501 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5608108108108109 [2024-11-12 20:47:50,501 INFO L175 Difference]: Start difference. First operand has 84 places, 80 transitions, 256 flow. Second operand 12 states and 498 transitions. [2024-11-12 20:47:50,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 237 transitions, 1252 flow [2024-11-12 20:47:50,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 237 transitions, 1208 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:47:50,561 INFO L231 Difference]: Finished difference. Result has 95 places, 85 transitions, 344 flow [2024-11-12 20:47:50,561 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=344, PETRI_PLACES=95, PETRI_TRANSITIONS=85} [2024-11-12 20:47:50,562 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 25 predicate places. [2024-11-12 20:47:50,562 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 85 transitions, 344 flow [2024-11-12 20:47:50,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 29.466666666666665) internal successors, (442), 15 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:50,562 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:50,562 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:50,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 20:47:50,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:50,763 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:47:50,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:50,764 INFO L85 PathProgramCache]: Analyzing trace with hash -741792503, now seen corresponding path program 1 times [2024-11-12 20:47:50,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:50,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131838613] [2024-11-12 20:47:50,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:50,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:50,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:50,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:50,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131838613] [2024-11-12 20:47:50,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131838613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:50,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085572689] [2024-11-12 20:47:50,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:50,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:50,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:50,854 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:50,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 20:47:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:50,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 20:47:50,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:51,056 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:51,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:51,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085572689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:51,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:51,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2024-11-12 20:47:51,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131734334] [2024-11-12 20:47:51,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:51,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 20:47:51,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:51,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 20:47:51,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-11-12 20:47:51,497 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 74 [2024-11-12 20:47:51,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 85 transitions, 344 flow. Second operand has 18 states, 18 states have (on average 28.055555555555557) internal successors, (505), 18 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:51,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:51,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 74 [2024-11-12 20:47:51,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:54,089 INFO L124 PetriNetUnfolderBase]: 22835/35243 cut-off events. [2024-11-12 20:47:54,089 INFO L125 PetriNetUnfolderBase]: For 31485/31485 co-relation queries the response was YES. [2024-11-12 20:47:54,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90898 conditions, 35243 events. 22835/35243 cut-off events. For 31485/31485 co-relation queries the response was YES. Maximal size of possible extension queue 1010. Compared 257990 event pairs, 13919 based on Foata normal form. 0/33339 useless extension candidates. Maximal degree in co-relation 90881. Up to 25296 conditions per place. [2024-11-12 20:47:54,311 INFO L140 encePairwiseOnDemand]: 66/74 looper letters, 95 selfloop transitions, 18 changer transitions 9/146 dead transitions. [2024-11-12 20:47:54,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 146 transitions, 840 flow [2024-11-12 20:47:54,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 20:47:54,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 20:47:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 324 transitions. [2024-11-12 20:47:54,314 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-11-12 20:47:54,314 INFO L175 Difference]: Start difference. First operand has 95 places, 85 transitions, 344 flow. Second operand 9 states and 324 transitions. [2024-11-12 20:47:54,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 146 transitions, 840 flow [2024-11-12 20:47:54,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 146 transitions, 811 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-12 20:47:54,390 INFO L231 Difference]: Finished difference. Result has 100 places, 88 transitions, 392 flow [2024-11-12 20:47:54,390 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=392, PETRI_PLACES=100, PETRI_TRANSITIONS=88} [2024-11-12 20:47:54,390 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 30 predicate places. [2024-11-12 20:47:54,390 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 88 transitions, 392 flow [2024-11-12 20:47:54,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 28.055555555555557) internal successors, (505), 18 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:54,391 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:54,391 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:54,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-12 20:47:54,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-12 20:47:54,592 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:47:54,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:54,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1664079165, now seen corresponding path program 1 times [2024-11-12 20:47:54,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:54,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922714194] [2024-11-12 20:47:54,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:54,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:54,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:47:54,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:54,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922714194] [2024-11-12 20:47:54,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922714194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:54,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571576291] [2024-11-12 20:47:54,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:54,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:54,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:54,654 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:54,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 20:47:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:54,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 20:47:54,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:54,815 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:54,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:54,889 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:54,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571576291] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:54,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:54,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2024-11-12 20:47:54,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719685395] [2024-11-12 20:47:54,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:54,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 20:47:54,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:54,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 20:47:54,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-12 20:47:55,069 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 74 [2024-11-12 20:47:55,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 88 transitions, 392 flow. Second operand has 14 states, 14 states have (on average 28.142857142857142) internal successors, (394), 14 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:55,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:55,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 74 [2024-11-12 20:47:55,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:59,773 INFO L124 PetriNetUnfolderBase]: 37488/58953 cut-off events. [2024-11-12 20:47:59,774 INFO L125 PetriNetUnfolderBase]: For 49526/49526 co-relation queries the response was YES. [2024-11-12 20:47:59,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151411 conditions, 58953 events. 37488/58953 cut-off events. For 49526/49526 co-relation queries the response was YES. Maximal size of possible extension queue 1464. Compared 461578 event pairs, 11179 based on Foata normal form. 470/57398 useless extension candidates. Maximal degree in co-relation 151390. Up to 19253 conditions per place. [2024-11-12 20:48:00,534 INFO L140 encePairwiseOnDemand]: 62/74 looper letters, 236 selfloop transitions, 23 changer transitions 13/293 dead transitions. [2024-11-12 20:48:00,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 293 transitions, 1839 flow [2024-11-12 20:48:00,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 20:48:00,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-12 20:48:00,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 538 transitions. [2024-11-12 20:48:00,536 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5592515592515592 [2024-11-12 20:48:00,536 INFO L175 Difference]: Start difference. First operand has 100 places, 88 transitions, 392 flow. Second operand 13 states and 538 transitions. [2024-11-12 20:48:00,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 293 transitions, 1839 flow [2024-11-12 20:48:00,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 293 transitions, 1824 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 20:48:00,628 INFO L231 Difference]: Finished difference. Result has 111 places, 87 transitions, 429 flow [2024-11-12 20:48:00,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=429, PETRI_PLACES=111, PETRI_TRANSITIONS=87} [2024-11-12 20:48:00,629 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 41 predicate places. [2024-11-12 20:48:00,629 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 87 transitions, 429 flow [2024-11-12 20:48:00,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 28.142857142857142) internal successors, (394), 14 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:00,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:00,630 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:00,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-12 20:48:00,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 20:48:00,831 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:48:00,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:00,831 INFO L85 PathProgramCache]: Analyzing trace with hash -725296379, now seen corresponding path program 2 times [2024-11-12 20:48:00,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:00,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309386348] [2024-11-12 20:48:00,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:00,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:00,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:00,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309386348] [2024-11-12 20:48:00,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309386348] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:00,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176012995] [2024-11-12 20:48:00,991 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:48:00,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:00,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:00,993 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:00,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 20:48:01,057 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 20:48:01,057 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:48:01,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:48:01,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:48:01,101 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:48:01,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176012995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:01,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:48:01,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2024-11-12 20:48:01,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396753020] [2024-11-12 20:48:01,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:01,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:48:01,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:01,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:48:01,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-12 20:48:01,126 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 74 [2024-11-12 20:48:01,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 87 transitions, 429 flow. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:01,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:01,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 74 [2024-11-12 20:48:01,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:05,461 INFO L124 PetriNetUnfolderBase]: 36087/55398 cut-off events. [2024-11-12 20:48:05,461 INFO L125 PetriNetUnfolderBase]: For 61969/61969 co-relation queries the response was YES. [2024-11-12 20:48:05,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152464 conditions, 55398 events. 36087/55398 cut-off events. For 61969/61969 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 413653 event pairs, 15398 based on Foata normal form. 1592/56487 useless extension candidates. Maximal degree in co-relation 152439. Up to 27602 conditions per place. [2024-11-12 20:48:05,822 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 109 selfloop transitions, 5 changer transitions 3/142 dead transitions. [2024-11-12 20:48:05,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 142 transitions, 957 flow [2024-11-12 20:48:05,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:48:05,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:48:05,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 203 transitions. [2024-11-12 20:48:05,823 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5486486486486486 [2024-11-12 20:48:05,823 INFO L175 Difference]: Start difference. First operand has 111 places, 87 transitions, 429 flow. Second operand 5 states and 203 transitions. [2024-11-12 20:48:05,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 142 transitions, 957 flow [2024-11-12 20:48:06,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 142 transitions, 855 flow, removed 14 selfloop flow, removed 14 redundant places. [2024-11-12 20:48:06,288 INFO L231 Difference]: Finished difference. Result has 96 places, 85 transitions, 366 flow [2024-11-12 20:48:06,288 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=366, PETRI_PLACES=96, PETRI_TRANSITIONS=85} [2024-11-12 20:48:06,288 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 26 predicate places. [2024-11-12 20:48:06,289 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 85 transitions, 366 flow [2024-11-12 20:48:06,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:06,289 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:06,289 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:06,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 20:48:06,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-12 20:48:06,490 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:48:06,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:06,491 INFO L85 PathProgramCache]: Analyzing trace with hash -701746091, now seen corresponding path program 1 times [2024-11-12 20:48:06,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:06,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062367848] [2024-11-12 20:48:06,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:06,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:48:06,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:06,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062367848] [2024-11-12 20:48:06,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062367848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:06,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130780816] [2024-11-12 20:48:06,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:06,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:06,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:06,578 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:06,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 20:48:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:06,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-12 20:48:06,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:06,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:06,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130780816] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:06,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:06,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 24 [2024-11-12 20:48:06,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024894334] [2024-11-12 20:48:06,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:06,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-12 20:48:06,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:06,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-12 20:48:06,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2024-11-12 20:48:07,398 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 74 [2024-11-12 20:48:07,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 85 transitions, 366 flow. Second operand has 24 states, 24 states have (on average 28.833333333333332) internal successors, (692), 24 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:07,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:07,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 74 [2024-11-12 20:48:07,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:12,524 INFO L124 PetriNetUnfolderBase]: 39050/59621 cut-off events. [2024-11-12 20:48:12,524 INFO L125 PetriNetUnfolderBase]: For 57244/57244 co-relation queries the response was YES. [2024-11-12 20:48:12,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161121 conditions, 59621 events. 39050/59621 cut-off events. For 57244/57244 co-relation queries the response was YES. Maximal size of possible extension queue 1586. Compared 466257 event pairs, 4292 based on Foata normal form. 1968/61023 useless extension candidates. Maximal degree in co-relation 161101. Up to 15338 conditions per place. [2024-11-12 20:48:12,914 INFO L140 encePairwiseOnDemand]: 63/74 looper letters, 252 selfloop transitions, 27 changer transitions 20/322 dead transitions. [2024-11-12 20:48:12,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 322 transitions, 1944 flow [2024-11-12 20:48:12,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 20:48:12,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 20:48:12,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 682 transitions. [2024-11-12 20:48:12,916 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5421303656597775 [2024-11-12 20:48:12,916 INFO L175 Difference]: Start difference. First operand has 96 places, 85 transitions, 366 flow. Second operand 17 states and 682 transitions. [2024-11-12 20:48:12,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 322 transitions, 1944 flow [2024-11-12 20:48:13,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 322 transitions, 1862 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 20:48:13,609 INFO L231 Difference]: Finished difference. Result has 106 places, 88 transitions, 438 flow [2024-11-12 20:48:13,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=438, PETRI_PLACES=106, PETRI_TRANSITIONS=88} [2024-11-12 20:48:13,609 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 36 predicate places. [2024-11-12 20:48:13,610 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 88 transitions, 438 flow [2024-11-12 20:48:13,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 28.833333333333332) internal successors, (692), 24 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:13,610 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:13,610 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:13,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-12 20:48:13,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:13,811 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-12 20:48:13,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:13,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1280247941, now seen corresponding path program 1 times [2024-11-12 20:48:13,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:13,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990359926] [2024-11-12 20:48:13,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:13,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:13,869 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:48:13,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:13,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990359926] [2024-11-12 20:48:13,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990359926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:13,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725375459] [2024-11-12 20:48:13,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:13,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:13,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:13,872 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:13,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 20:48:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:13,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 20:48:13,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:14,082 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:14,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:14,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725375459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:14,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:14,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 23 [2024-11-12 20:48:14,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479509882] [2024-11-12 20:48:14,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:14,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 20:48:14,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:14,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 20:48:14,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2024-11-12 20:48:14,560 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 74 [2024-11-12 20:48:14,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 88 transitions, 438 flow. Second operand has 23 states, 23 states have (on average 27.608695652173914) internal successors, (635), 23 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:14,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:14,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 74 [2024-11-12 20:48:14,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand