./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:41:25,803 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:41:25,852 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:41:25,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:41:25,855 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:41:25,871 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:41:25,872 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:41:25,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:41:25,872 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:41:25,873 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:41:25,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:41:25,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:41:25,874 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:41:25,874 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:41:25,874 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:41:25,874 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:41:25,875 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:41:25,875 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:41:25,875 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:41:25,875 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:41:25,875 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:41:25,879 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:41:25,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:41:25,880 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:41:25,880 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:41:25,880 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:41:25,880 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:41:25,880 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:41:25,880 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:41:25,881 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:41:25,881 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:41:25,881 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:41:25,881 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:41:25,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:41:25,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:41:25,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:41:25,882 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:41:25,882 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:41:25,882 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:41:25,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:41:25,882 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:41:25,887 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:41:25,887 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:41:25,887 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:41:25,887 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2024-10-24 23:41:26,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:41:26,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:41:26,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:41:26,110 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:41:26,111 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:41:26,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-10-24 23:41:27,290 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:41:27,455 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:41:27,456 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-10-24 23:41:27,467 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/747d77273/d3ba0ed30ca44e72ba30fdc667de011b/FLAG5f0cc301c [2024-10-24 23:41:27,850 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/747d77273/d3ba0ed30ca44e72ba30fdc667de011b [2024-10-24 23:41:27,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:41:27,853 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:41:27,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:41:27,854 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:41:27,858 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:41:27,859 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:41:27" (1/1) ... [2024-10-24 23:41:27,859 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c2fe8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:27, skipping insertion in model container [2024-10-24 23:41:27,860 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:41:27" (1/1) ... [2024-10-24 23:41:27,879 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:41:28,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:41:28,074 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:41:28,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:41:28,118 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:41:28,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28 WrapperNode [2024-10-24 23:41:28,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:41:28,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:41:28,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:41:28,120 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:41:28,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,154 INFO L138 Inliner]: procedures = 24, calls = 49, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 349 [2024-10-24 23:41:28,154 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:41:28,157 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:41:28,157 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:41:28,157 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:41:28,166 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,166 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,169 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,190 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-24 23:41:28,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,194 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,204 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,208 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,210 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,211 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,213 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:41:28,214 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:41:28,214 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:41:28,214 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:41:28,215 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:41:28,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:28,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 23:41:28,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 23:41:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:41:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:41:28,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:41:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:41:28,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:41:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 23:41:28,285 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 23:41:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:41:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:41:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:41:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:41:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 23:41:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 23:41:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 23:41:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:41:28,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:41:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:41:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:41:28,288 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:41:28,384 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:41:28,386 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:41:28,744 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:41:28,744 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:41:29,085 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:41:29,085 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-24 23:41:29,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:41:29 BoogieIcfgContainer [2024-10-24 23:41:29,086 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:41:29,088 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:41:29,088 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:41:29,091 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:41:29,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:41:27" (1/3) ... [2024-10-24 23:41:29,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f29df37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:41:29, skipping insertion in model container [2024-10-24 23:41:29,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (2/3) ... [2024-10-24 23:41:29,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f29df37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:41:29, skipping insertion in model container [2024-10-24 23:41:29,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:41:29" (3/3) ... [2024-10-24 23:41:29,093 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2024-10-24 23:41:29,106 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:41:29,106 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-10-24 23:41:29,106 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:41:29,176 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 23:41:29,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 92 transitions, 205 flow [2024-10-24 23:41:29,262 INFO L124 PetriNetUnfolderBase]: 10/89 cut-off events. [2024-10-24 23:41:29,262 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 23:41:29,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 89 events. 10/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 340 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 69. Up to 3 conditions per place. [2024-10-24 23:41:29,268 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 92 transitions, 205 flow [2024-10-24 23:41:29,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 87 transitions, 189 flow [2024-10-24 23:41:29,280 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:41:29,286 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;@213861bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:41:29,286 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-10-24 23:41:29,289 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:41:29,289 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:41:29,289 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:41:29,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:29,290 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:41:29,290 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:29,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:29,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1057236, now seen corresponding path program 1 times [2024-10-24 23:41:29,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:29,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601038898] [2024-10-24 23:41:29,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:29,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:29,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:29,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601038898] [2024-10-24 23:41:29,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601038898] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:29,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:29,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:41:29,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105848227] [2024-10-24 23:41:29,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:29,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:29,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:29,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:29,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:41:29,581 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-10-24 23:41:29,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:29,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:29,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-10-24 23:41:29,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:30,987 INFO L124 PetriNetUnfolderBase]: 9250/15264 cut-off events. [2024-10-24 23:41:30,987 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2024-10-24 23:41:31,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28354 conditions, 15264 events. 9250/15264 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 118718 event pairs, 8468 based on Foata normal form. 738/9533 useless extension candidates. Maximal degree in co-relation 27581. Up to 12592 conditions per place. [2024-10-24 23:41:31,078 INFO L140 encePairwiseOnDemand]: 68/92 looper letters, 58 selfloop transitions, 10 changer transitions 0/88 dead transitions. [2024-10-24 23:41:31,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 327 flow [2024-10-24 23:41:31,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:41:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:41:31,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 174 transitions. [2024-10-24 23:41:31,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2024-10-24 23:41:31,090 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 189 flow. Second operand 4 states and 174 transitions. [2024-10-24 23:41:31,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 327 flow [2024-10-24 23:41:31,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 318 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 23:41:31,109 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 252 flow [2024-10-24 23:41:31,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2024-10-24 23:41:31,115 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, -5 predicate places. [2024-10-24 23:41:31,117 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 252 flow [2024-10-24 23:41:31,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:31,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:31,118 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-24 23:41:31,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:41:31,119 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:31,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:31,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1432422099, now seen corresponding path program 1 times [2024-10-24 23:41:31,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:31,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249657862] [2024-10-24 23:41:31,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:31,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:31,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:31,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:31,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249657862] [2024-10-24 23:41:31,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249657862] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:31,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236776105] [2024-10-24 23:41:31,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:31,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:31,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:31,249 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) [2024-10-24 23:41:31,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:41:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:31,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:41:31,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:31,367 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:41:31,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236776105] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:31,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:41:31,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-24 23:41:31,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886655665] [2024-10-24 23:41:31,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:31,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:41:31,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:31,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:41:31,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:41:31,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-10-24 23:41:31,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:31,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:31,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-10-24 23:41:31,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:32,535 INFO L124 PetriNetUnfolderBase]: 9250/15261 cut-off events. [2024-10-24 23:41:32,535 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-10-24 23:41:32,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28252 conditions, 15261 events. 9250/15261 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 118576 event pairs, 8468 based on Foata normal form. 3/8800 useless extension candidates. Maximal degree in co-relation 28179. Up to 12577 conditions per place. [2024-10-24 23:41:32,595 INFO L140 encePairwiseOnDemand]: 79/92 looper letters, 48 selfloop transitions, 17 changer transitions 0/85 dead transitions. [2024-10-24 23:41:32,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 370 flow [2024-10-24 23:41:32,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:41:32,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:41:32,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-10-24 23:41:32,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37318840579710144 [2024-10-24 23:41:32,597 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 252 flow. Second operand 6 states and 206 transitions. [2024-10-24 23:41:32,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 370 flow [2024-10-24 23:41:32,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 85 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:41:32,599 INFO L231 Difference]: Finished difference. Result has 84 places, 85 transitions, 274 flow [2024-10-24 23:41:32,599 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=84, PETRI_TRANSITIONS=85} [2024-10-24 23:41:32,600 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, -3 predicate places. [2024-10-24 23:41:32,600 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 85 transitions, 274 flow [2024-10-24 23:41:32,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:32,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:32,601 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-24 23:41:32,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 23:41:32,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:32,805 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:32,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:32,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1455413192, now seen corresponding path program 1 times [2024-10-24 23:41:32,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:32,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555326248] [2024-10-24 23:41:32,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:32,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:32,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555326248] [2024-10-24 23:41:32,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555326248] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680297779] [2024-10-24 23:41:32,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:32,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:32,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:32,873 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:32,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:41:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:32,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:41:32,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:32,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:33,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:33,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680297779] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:33,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:33,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-24 23:41:33,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069444153] [2024-10-24 23:41:33,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:33,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:41:33,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:33,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:41:33,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:41:33,038 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-10-24 23:41:33,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 85 transitions, 274 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:33,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:33,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-10-24 23:41:33,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:34,324 INFO L124 PetriNetUnfolderBase]: 9259/15297 cut-off events. [2024-10-24 23:41:34,324 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-10-24 23:41:34,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28393 conditions, 15297 events. 9259/15297 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 118952 event pairs, 8468 based on Foata normal form. 9/8842 useless extension candidates. Maximal degree in co-relation 28181. Up to 12592 conditions per place. [2024-10-24 23:41:34,394 INFO L140 encePairwiseOnDemand]: 79/92 looper letters, 55 selfloop transitions, 37 changer transitions 0/112 dead transitions. [2024-10-24 23:41:34,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 112 transitions, 632 flow [2024-10-24 23:41:34,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:41:34,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:41:34,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2024-10-24 23:41:34,396 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35978260869565215 [2024-10-24 23:41:34,396 INFO L175 Difference]: Start difference. First operand has 84 places, 85 transitions, 274 flow. Second operand 10 states and 331 transitions. [2024-10-24 23:41:34,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 112 transitions, 632 flow [2024-10-24 23:41:34,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 112 transitions, 549 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-10-24 23:41:34,399 INFO L231 Difference]: Finished difference. Result has 91 places, 112 transitions, 489 flow [2024-10-24 23:41:34,399 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=489, PETRI_PLACES=91, PETRI_TRANSITIONS=112} [2024-10-24 23:41:34,400 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 4 predicate places. [2024-10-24 23:41:34,400 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 112 transitions, 489 flow [2024-10-24 23:41:34,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:34,400 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:34,400 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:34,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 23:41:34,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-24 23:41:34,606 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:34,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:34,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2087349364, now seen corresponding path program 1 times [2024-10-24 23:41:34,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:34,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177414060] [2024-10-24 23:41:34,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:34,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:34,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:34,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:34,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177414060] [2024-10-24 23:41:34,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177414060] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:34,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:34,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:41:34,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385367659] [2024-10-24 23:41:34,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:34,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:34,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:34,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:34,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:41:34,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-24 23:41:34,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 112 transitions, 489 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:34,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:34,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-24 23:41:34,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:35,595 INFO L124 PetriNetUnfolderBase]: 9487/15753 cut-off events. [2024-10-24 23:41:35,595 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2024-10-24 23:41:35,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29341 conditions, 15753 events. 9487/15753 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 122271 event pairs, 8675 based on Foata normal form. 109/9457 useless extension candidates. Maximal degree in co-relation 29183. Up to 12618 conditions per place. [2024-10-24 23:41:35,754 INFO L140 encePairwiseOnDemand]: 80/92 looper letters, 126 selfloop transitions, 10 changer transitions 1/160 dead transitions. [2024-10-24 23:41:35,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 160 transitions, 1015 flow [2024-10-24 23:41:35,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:41:35,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:41:35,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 236 transitions. [2024-10-24 23:41:35,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5130434782608696 [2024-10-24 23:41:35,756 INFO L175 Difference]: Start difference. First operand has 91 places, 112 transitions, 489 flow. Second operand 5 states and 236 transitions. [2024-10-24 23:41:35,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 160 transitions, 1015 flow [2024-10-24 23:41:35,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 160 transitions, 955 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-10-24 23:41:35,761 INFO L231 Difference]: Finished difference. Result has 95 places, 119 transitions, 554 flow [2024-10-24 23:41:35,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=554, PETRI_PLACES=95, PETRI_TRANSITIONS=119} [2024-10-24 23:41:35,761 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 8 predicate places. [2024-10-24 23:41:35,762 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 119 transitions, 554 flow [2024-10-24 23:41:35,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:35,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:35,762 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:35,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:41:35,763 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:35,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:35,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1121202475, now seen corresponding path program 1 times [2024-10-24 23:41:35,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:35,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766661854] [2024-10-24 23:41:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:35,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:35,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:35,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:35,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766661854] [2024-10-24 23:41:35,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766661854] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:35,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926210894] [2024-10-24 23:41:35,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:35,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:35,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:35,934 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:35,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:41:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:36,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:41:36,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:36,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:36,030 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:41:36,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926210894] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:36,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:41:36,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-24 23:41:36,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775269997] [2024-10-24 23:41:36,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:36,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:41:36,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:36,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:41:36,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 23:41:36,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-24 23:41:36,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 119 transitions, 554 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:36,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:36,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-24 23:41:36,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:36,863 INFO L124 PetriNetUnfolderBase]: 8079/13391 cut-off events. [2024-10-24 23:41:36,863 INFO L125 PetriNetUnfolderBase]: For 975/975 co-relation queries the response was YES. [2024-10-24 23:41:36,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25747 conditions, 13391 events. 8079/13391 cut-off events. For 975/975 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 100114 event pairs, 7346 based on Foata normal form. 0/8281 useless extension candidates. Maximal degree in co-relation 25591. Up to 11060 conditions per place. [2024-10-24 23:41:36,933 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 93 selfloop transitions, 1 changer transitions 0/117 dead transitions. [2024-10-24 23:41:36,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 117 transitions, 734 flow [2024-10-24 23:41:36,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:41:36,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:41:36,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-10-24 23:41:36,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-10-24 23:41:36,934 INFO L175 Difference]: Start difference. First operand has 95 places, 119 transitions, 554 flow. Second operand 3 states and 140 transitions. [2024-10-24 23:41:36,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 117 transitions, 734 flow [2024-10-24 23:41:36,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 117 transitions, 730 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:36,938 INFO L231 Difference]: Finished difference. Result has 94 places, 117 transitions, 544 flow [2024-10-24 23:41:36,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=544, PETRI_PLACES=94, PETRI_TRANSITIONS=117} [2024-10-24 23:41:36,939 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 7 predicate places. [2024-10-24 23:41:36,939 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 117 transitions, 544 flow [2024-10-24 23:41:36,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:36,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:36,940 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:36,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 23:41:37,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:37,144 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:37,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:37,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1380648729, now seen corresponding path program 1 times [2024-10-24 23:41:37,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:37,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902818987] [2024-10-24 23:41:37,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:37,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:37,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:37,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902818987] [2024-10-24 23:41:37,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902818987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:37,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:37,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:41:37,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480179453] [2024-10-24 23:41:37,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:37,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:41:37,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:37,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:41:37,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:41:37,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-24 23:41:37,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 117 transitions, 544 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:37,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:37,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-24 23:41:37,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:38,224 INFO L124 PetriNetUnfolderBase]: 7412/11897 cut-off events. [2024-10-24 23:41:38,224 INFO L125 PetriNetUnfolderBase]: For 1052/1052 co-relation queries the response was YES. [2024-10-24 23:41:38,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23900 conditions, 11897 events. 7412/11897 cut-off events. For 1052/1052 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 81871 event pairs, 2706 based on Foata normal form. 192/7543 useless extension candidates. Maximal degree in co-relation 23884. Up to 8609 conditions per place. [2024-10-24 23:41:38,290 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 117 selfloop transitions, 2 changer transitions 1/143 dead transitions. [2024-10-24 23:41:38,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 143 transitions, 845 flow [2024-10-24 23:41:38,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:41:38,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:41:38,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-10-24 23:41:38,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6014492753623188 [2024-10-24 23:41:38,292 INFO L175 Difference]: Start difference. First operand has 94 places, 117 transitions, 544 flow. Second operand 3 states and 166 transitions. [2024-10-24 23:41:38,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 143 transitions, 845 flow [2024-10-24 23:41:38,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 143 transitions, 844 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:38,296 INFO L231 Difference]: Finished difference. Result has 96 places, 117 transitions, 548 flow [2024-10-24 23:41:38,296 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=548, PETRI_PLACES=96, PETRI_TRANSITIONS=117} [2024-10-24 23:41:38,296 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2024-10-24 23:41:38,296 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 117 transitions, 548 flow [2024-10-24 23:41:38,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:38,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:38,297 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:38,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:41:38,297 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:38,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:38,298 INFO L85 PathProgramCache]: Analyzing trace with hash 217816679, now seen corresponding path program 1 times [2024-10-24 23:41:38,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:38,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810154441] [2024-10-24 23:41:38,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:38,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:38,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:38,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:38,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810154441] [2024-10-24 23:41:38,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810154441] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:38,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:38,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:41:38,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232057699] [2024-10-24 23:41:38,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:38,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:41:38,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:38,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:41:38,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:41:38,355 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-24 23:41:38,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 117 transitions, 548 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:38,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:38,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-24 23:41:38,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:39,677 INFO L124 PetriNetUnfolderBase]: 13317/21454 cut-off events. [2024-10-24 23:41:39,677 INFO L125 PetriNetUnfolderBase]: For 2742/2754 co-relation queries the response was YES. [2024-10-24 23:41:39,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44274 conditions, 21454 events. 13317/21454 cut-off events. For 2742/2754 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 160832 event pairs, 9148 based on Foata normal form. 0/14350 useless extension candidates. Maximal degree in co-relation 44256. Up to 9992 conditions per place. [2024-10-24 23:41:39,803 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 130 selfloop transitions, 2 changer transitions 0/155 dead transitions. [2024-10-24 23:41:39,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 155 transitions, 908 flow [2024-10-24 23:41:39,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:41:39,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:41:39,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2024-10-24 23:41:39,804 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2024-10-24 23:41:39,804 INFO L175 Difference]: Start difference. First operand has 96 places, 117 transitions, 548 flow. Second operand 3 states and 177 transitions. [2024-10-24 23:41:39,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 155 transitions, 908 flow [2024-10-24 23:41:39,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 155 transitions, 905 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:39,808 INFO L231 Difference]: Finished difference. Result has 98 places, 118 transitions, 560 flow [2024-10-24 23:41:39,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=560, PETRI_PLACES=98, PETRI_TRANSITIONS=118} [2024-10-24 23:41:39,809 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 11 predicate places. [2024-10-24 23:41:39,809 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 118 transitions, 560 flow [2024-10-24 23:41:39,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:39,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:39,809 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:39,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 23:41:39,809 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:39,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:39,810 INFO L85 PathProgramCache]: Analyzing trace with hash 217816677, now seen corresponding path program 1 times [2024-10-24 23:41:39,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:39,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182579247] [2024-10-24 23:41:39,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:39,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:39,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:39,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:39,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182579247] [2024-10-24 23:41:39,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182579247] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:39,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:39,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:41:39,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903982426] [2024-10-24 23:41:39,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:39,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:41:39,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:39,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:41:39,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:41:39,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-24 23:41:39,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 118 transitions, 560 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:39,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:39,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-24 23:41:39,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:40,911 INFO L124 PetriNetUnfolderBase]: 12833/20569 cut-off events. [2024-10-24 23:41:40,911 INFO L125 PetriNetUnfolderBase]: For 3687/3717 co-relation queries the response was YES. [2024-10-24 23:41:40,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43543 conditions, 20569 events. 12833/20569 cut-off events. For 3687/3717 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 150496 event pairs, 6590 based on Foata normal form. 0/14467 useless extension candidates. Maximal degree in co-relation 43524. Up to 17452 conditions per place. [2024-10-24 23:41:41,035 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 97 selfloop transitions, 9 changer transitions 0/129 dead transitions. [2024-10-24 23:41:41,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 129 transitions, 806 flow [2024-10-24 23:41:41,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:41:41,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:41:41,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-10-24 23:41:41,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-10-24 23:41:41,036 INFO L175 Difference]: Start difference. First operand has 98 places, 118 transitions, 560 flow. Second operand 3 states and 150 transitions. [2024-10-24 23:41:41,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 129 transitions, 806 flow [2024-10-24 23:41:41,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 129 transitions, 803 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:41,040 INFO L231 Difference]: Finished difference. Result has 99 places, 120 transitions, 601 flow [2024-10-24 23:41:41,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=601, PETRI_PLACES=99, PETRI_TRANSITIONS=120} [2024-10-24 23:41:41,041 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 12 predicate places. [2024-10-24 23:41:41,041 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 120 transitions, 601 flow [2024-10-24 23:41:41,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:41,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:41,041 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:41,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 23:41:41,041 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:41,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:41,042 INFO L85 PathProgramCache]: Analyzing trace with hash 217816678, now seen corresponding path program 1 times [2024-10-24 23:41:41,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:41,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796309441] [2024-10-24 23:41:41,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:41,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:41,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:41,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796309441] [2024-10-24 23:41:41,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796309441] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:41,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512805312] [2024-10-24 23:41:41,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:41,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:41,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:41,128 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:41,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:41:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:41,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:41:41,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:41,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:41,250 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:41:41,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512805312] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:41,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:41:41,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-10-24 23:41:41,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553591563] [2024-10-24 23:41:41,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:41,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:41,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:41,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:41,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:41:41,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-24 23:41:41,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 120 transitions, 601 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:41,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:41,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-24 23:41:41,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:42,470 INFO L124 PetriNetUnfolderBase]: 13695/21447 cut-off events. [2024-10-24 23:41:42,470 INFO L125 PetriNetUnfolderBase]: For 8556/8640 co-relation queries the response was YES. [2024-10-24 23:41:42,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48843 conditions, 21447 events. 13695/21447 cut-off events. For 8556/8640 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 153527 event pairs, 6720 based on Foata normal form. 386/15855 useless extension candidates. Maximal degree in co-relation 48822. Up to 10848 conditions per place. [2024-10-24 23:41:42,582 INFO L140 encePairwiseOnDemand]: 84/92 looper letters, 109 selfloop transitions, 13 changer transitions 0/145 dead transitions. [2024-10-24 23:41:42,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 145 transitions, 918 flow [2024-10-24 23:41:42,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:41:42,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:41:42,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2024-10-24 23:41:42,583 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-10-24 23:41:42,584 INFO L175 Difference]: Start difference. First operand has 99 places, 120 transitions, 601 flow. Second operand 4 states and 191 transitions. [2024-10-24 23:41:42,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 145 transitions, 918 flow [2024-10-24 23:41:42,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 145 transitions, 909 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:42,588 INFO L231 Difference]: Finished difference. Result has 102 places, 121 transitions, 657 flow [2024-10-24 23:41:42,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=657, PETRI_PLACES=102, PETRI_TRANSITIONS=121} [2024-10-24 23:41:42,589 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 15 predicate places. [2024-10-24 23:41:42,589 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 121 transitions, 657 flow [2024-10-24 23:41:42,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:42,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:42,589 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:42,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 23:41:42,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:42,790 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:42,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:42,790 INFO L85 PathProgramCache]: Analyzing trace with hash -39202132, now seen corresponding path program 1 times [2024-10-24 23:41:42,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:42,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845103576] [2024-10-24 23:41:42,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:42,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:42,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:42,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:42,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845103576] [2024-10-24 23:41:42,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845103576] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:42,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:42,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:41:42,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394311211] [2024-10-24 23:41:42,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:42,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:41:42,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:42,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:41:42,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:41:42,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-24 23:41:42,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 121 transitions, 657 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:42,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:42,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-24 23:41:42,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:43,618 INFO L124 PetriNetUnfolderBase]: 8456/13564 cut-off events. [2024-10-24 23:41:43,618 INFO L125 PetriNetUnfolderBase]: For 10891/10945 co-relation queries the response was YES. [2024-10-24 23:41:43,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33130 conditions, 13564 events. 8456/13564 cut-off events. For 10891/10945 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 93305 event pairs, 4540 based on Foata normal form. 58/9824 useless extension candidates. Maximal degree in co-relation 33106. Up to 11149 conditions per place. [2024-10-24 23:41:43,679 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 109 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2024-10-24 23:41:43,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 136 transitions, 926 flow [2024-10-24 23:41:43,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:41:43,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:41:43,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2024-10-24 23:41:43,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5579710144927537 [2024-10-24 23:41:43,680 INFO L175 Difference]: Start difference. First operand has 102 places, 121 transitions, 657 flow. Second operand 3 states and 154 transitions. [2024-10-24 23:41:43,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 136 transitions, 926 flow [2024-10-24 23:41:43,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 136 transitions, 925 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:43,685 INFO L231 Difference]: Finished difference. Result has 104 places, 121 transitions, 676 flow [2024-10-24 23:41:43,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=676, PETRI_PLACES=104, PETRI_TRANSITIONS=121} [2024-10-24 23:41:43,686 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 17 predicate places. [2024-10-24 23:41:43,686 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 121 transitions, 676 flow [2024-10-24 23:41:43,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:43,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:43,686 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:43,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 23:41:43,687 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:43,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:43,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1837615395, now seen corresponding path program 1 times [2024-10-24 23:41:43,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:43,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956465634] [2024-10-24 23:41:43,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:43,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:43,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:43,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:43,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956465634] [2024-10-24 23:41:43,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956465634] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:43,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:43,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:41:43,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474035522] [2024-10-24 23:41:43,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:43,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:43,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:43,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:43,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:41:43,746 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-24 23:41:43,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 121 transitions, 676 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:43,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:43,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-24 23:41:43,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:44,984 INFO L124 PetriNetUnfolderBase]: 11595/18556 cut-off events. [2024-10-24 23:41:44,984 INFO L125 PetriNetUnfolderBase]: For 19115/19211 co-relation queries the response was YES. [2024-10-24 23:41:45,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47898 conditions, 18556 events. 11595/18556 cut-off events. For 19115/19211 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 130861 event pairs, 9495 based on Foata normal form. 305/13964 useless extension candidates. Maximal degree in co-relation 47872. Up to 11655 conditions per place. [2024-10-24 23:41:45,078 INFO L140 encePairwiseOnDemand]: 81/92 looper letters, 122 selfloop transitions, 12 changer transitions 0/157 dead transitions. [2024-10-24 23:41:45,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 157 transitions, 1121 flow [2024-10-24 23:41:45,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:41:45,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:41:45,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 205 transitions. [2024-10-24 23:41:45,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5570652173913043 [2024-10-24 23:41:45,079 INFO L175 Difference]: Start difference. First operand has 104 places, 121 transitions, 676 flow. Second operand 4 states and 205 transitions. [2024-10-24 23:41:45,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 157 transitions, 1121 flow [2024-10-24 23:41:45,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 157 transitions, 1114 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:45,086 INFO L231 Difference]: Finished difference. Result has 107 places, 121 transitions, 713 flow [2024-10-24 23:41:45,087 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=713, PETRI_PLACES=107, PETRI_TRANSITIONS=121} [2024-10-24 23:41:45,087 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 20 predicate places. [2024-10-24 23:41:45,087 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 121 transitions, 713 flow [2024-10-24 23:41:45,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:45,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:45,088 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-24 23:41:45,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 23:41:45,088 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:45,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:45,088 INFO L85 PathProgramCache]: Analyzing trace with hash 625763751, now seen corresponding path program 2 times [2024-10-24 23:41:45,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:45,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48987875] [2024-10-24 23:41:45,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:45,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:45,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:45,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48987875] [2024-10-24 23:41:45,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48987875] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:45,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738315257] [2024-10-24 23:41:45,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:41:45,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:45,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:45,199 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:45,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 23:41:45,267 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:41:45,268 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:41:45,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:41:45,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:45,300 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:41:45,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:41:45,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738315257] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:45,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:45,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-24 23:41:45,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201803262] [2024-10-24 23:41:45,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:45,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 23:41:45,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:45,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 23:41:45,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-24 23:41:45,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-10-24 23:41:45,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 121 transitions, 713 flow. Second operand has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:45,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:45,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-10-24 23:41:45,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:47,000 INFO L124 PetriNetUnfolderBase]: 11627/18620 cut-off events. [2024-10-24 23:41:47,001 INFO L125 PetriNetUnfolderBase]: For 19611/19713 co-relation queries the response was YES. [2024-10-24 23:41:47,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49810 conditions, 18620 events. 11627/18620 cut-off events. For 19611/19713 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 131955 event pairs, 9511 based on Foata normal form. 6/13724 useless extension candidates. Maximal degree in co-relation 49783. Up to 16307 conditions per place. [2024-10-24 23:41:47,103 INFO L140 encePairwiseOnDemand]: 79/92 looper letters, 54 selfloop transitions, 56 changer transitions 0/130 dead transitions. [2024-10-24 23:41:47,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 130 transitions, 1004 flow [2024-10-24 23:41:47,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 23:41:47,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-24 23:41:47,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 652 transitions. [2024-10-24 23:41:47,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29528985507246375 [2024-10-24 23:41:47,106 INFO L175 Difference]: Start difference. First operand has 107 places, 121 transitions, 713 flow. Second operand 24 states and 652 transitions. [2024-10-24 23:41:47,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 130 transitions, 1004 flow [2024-10-24 23:41:47,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 130 transitions, 991 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:47,119 INFO L231 Difference]: Finished difference. Result has 130 places, 130 transitions, 908 flow [2024-10-24 23:41:47,119 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=908, PETRI_PLACES=130, PETRI_TRANSITIONS=130} [2024-10-24 23:41:47,120 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 43 predicate places. [2024-10-24 23:41:47,120 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 130 transitions, 908 flow [2024-10-24 23:41:47,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:47,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:47,121 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:47,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 23:41:47,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-24 23:41:47,327 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:47,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:47,327 INFO L85 PathProgramCache]: Analyzing trace with hash 572674798, now seen corresponding path program 1 times [2024-10-24 23:41:47,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:47,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642922446] [2024-10-24 23:41:47,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:47,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:47,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:47,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:47,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642922446] [2024-10-24 23:41:47,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642922446] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:47,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:47,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:41:47,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63950242] [2024-10-24 23:41:47,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:47,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:47,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:47,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:47,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:41:47,447 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-24 23:41:47,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 130 transitions, 908 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:47,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:47,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-24 23:41:47,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:49,475 INFO L124 PetriNetUnfolderBase]: 13119/21437 cut-off events. [2024-10-24 23:41:49,475 INFO L125 PetriNetUnfolderBase]: For 23439/23535 co-relation queries the response was YES. [2024-10-24 23:41:49,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57802 conditions, 21437 events. 13119/21437 cut-off events. For 23439/23535 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 155434 event pairs, 10766 based on Foata normal form. 352/16527 useless extension candidates. Maximal degree in co-relation 57772. Up to 16364 conditions per place. [2024-10-24 23:41:49,618 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 141 selfloop transitions, 9 changer transitions 7/179 dead transitions. [2024-10-24 23:41:49,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 179 transitions, 1594 flow [2024-10-24 23:41:49,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:41:49,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:41:49,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-10-24 23:41:49,619 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5407608695652174 [2024-10-24 23:41:49,619 INFO L175 Difference]: Start difference. First operand has 130 places, 130 transitions, 908 flow. Second operand 4 states and 199 transitions. [2024-10-24 23:41:49,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 179 transitions, 1594 flow [2024-10-24 23:41:49,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 179 transitions, 1439 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-10-24 23:41:49,631 INFO L231 Difference]: Finished difference. Result has 124 places, 130 transitions, 809 flow [2024-10-24 23:41:49,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=809, PETRI_PLACES=124, PETRI_TRANSITIONS=130} [2024-10-24 23:41:49,631 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 37 predicate places. [2024-10-24 23:41:49,631 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 130 transitions, 809 flow [2024-10-24 23:41:49,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:49,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:49,632 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:49,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 23:41:49,632 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:49,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:49,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1224080899, now seen corresponding path program 1 times [2024-10-24 23:41:49,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:49,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013937832] [2024-10-24 23:41:49,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:49,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:49,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:41:49,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:49,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013937832] [2024-10-24 23:41:49,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013937832] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:49,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:49,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:41:49,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893538418] [2024-10-24 23:41:49,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:49,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:49,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:49,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:49,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:41:49,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 92 [2024-10-24 23:41:49,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 130 transitions, 809 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:49,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:49,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 92 [2024-10-24 23:41:49,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:51,696 INFO L124 PetriNetUnfolderBase]: 18894/30436 cut-off events. [2024-10-24 23:41:51,697 INFO L125 PetriNetUnfolderBase]: For 28296/28308 co-relation queries the response was YES. [2024-10-24 23:41:51,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83675 conditions, 30436 events. 18894/30436 cut-off events. For 28296/28308 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 220687 event pairs, 6869 based on Foata normal form. 466/23596 useless extension candidates. Maximal degree in co-relation 83646. Up to 10486 conditions per place. [2024-10-24 23:41:51,916 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 177 selfloop transitions, 6 changer transitions 0/202 dead transitions. [2024-10-24 23:41:51,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 202 transitions, 1472 flow [2024-10-24 23:41:51,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:41:51,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:41:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 253 transitions. [2024-10-24 23:41:51,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-10-24 23:41:51,918 INFO L175 Difference]: Start difference. First operand has 124 places, 130 transitions, 809 flow. Second operand 5 states and 253 transitions. [2024-10-24 23:41:51,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 202 transitions, 1472 flow [2024-10-24 23:41:51,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 202 transitions, 1440 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-24 23:41:51,988 INFO L231 Difference]: Finished difference. Result has 129 places, 135 transitions, 824 flow [2024-10-24 23:41:51,989 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=824, PETRI_PLACES=129, PETRI_TRANSITIONS=135} [2024-10-24 23:41:51,989 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 42 predicate places. [2024-10-24 23:41:51,989 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 135 transitions, 824 flow [2024-10-24 23:41:51,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:51,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:51,990 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-24 23:41:51,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 23:41:51,990 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:51,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:51,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2127304649, now seen corresponding path program 1 times [2024-10-24 23:41:51,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:51,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524872109] [2024-10-24 23:41:51,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:51,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:52,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:52,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524872109] [2024-10-24 23:41:52,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524872109] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:52,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93964511] [2024-10-24 23:41:52,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:52,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:52,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:52,153 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:52,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 23:41:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:52,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 23:41:52,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:52,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:52,374 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:52,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93964511] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:52,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:52,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-24 23:41:52,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905779749] [2024-10-24 23:41:52,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:52,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 23:41:52,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:52,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 23:41:52,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-24 23:41:52,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-10-24 23:41:52,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 135 transitions, 824 flow. Second operand has 28 states, 28 states have (on average 24.071428571428573) internal successors, (674), 28 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:52,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:52,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-10-24 23:41:52,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:54,523 INFO L124 PetriNetUnfolderBase]: 16229/26706 cut-off events. [2024-10-24 23:41:54,523 INFO L125 PetriNetUnfolderBase]: For 31071/31209 co-relation queries the response was YES. [2024-10-24 23:41:54,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76742 conditions, 26706 events. 16229/26706 cut-off events. For 31071/31209 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 199171 event pairs, 13523 based on Foata normal form. 84/20284 useless extension candidates. Maximal degree in co-relation 76710. Up to 23171 conditions per place. [2024-10-24 23:41:54,701 INFO L140 encePairwiseOnDemand]: 80/92 looper letters, 59 selfloop transitions, 123 changer transitions 0/205 dead transitions. [2024-10-24 23:41:54,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 205 transitions, 1783 flow [2024-10-24 23:41:54,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 23:41:54,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-24 23:41:54,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 771 transitions. [2024-10-24 23:41:54,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32232441471571904 [2024-10-24 23:41:54,704 INFO L175 Difference]: Start difference. First operand has 129 places, 135 transitions, 824 flow. Second operand 26 states and 771 transitions. [2024-10-24 23:41:54,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 205 transitions, 1783 flow [2024-10-24 23:41:54,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 205 transitions, 1783 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:41:54,724 INFO L231 Difference]: Finished difference. Result has 161 places, 205 transitions, 1749 flow [2024-10-24 23:41:54,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1749, PETRI_PLACES=161, PETRI_TRANSITIONS=205} [2024-10-24 23:41:54,724 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 74 predicate places. [2024-10-24 23:41:54,724 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 205 transitions, 1749 flow [2024-10-24 23:41:54,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 24.071428571428573) internal successors, (674), 28 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:54,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:54,725 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:54,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 23:41:54,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-24 23:41:54,925 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:54,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:54,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1892108512, now seen corresponding path program 1 times [2024-10-24 23:41:54,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:54,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164445808] [2024-10-24 23:41:54,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:54,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:54,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:54,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:54,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164445808] [2024-10-24 23:41:54,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164445808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:54,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:54,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:41:54,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786597165] [2024-10-24 23:41:54,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:54,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:41:54,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:54,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:41:54,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:41:54,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-24 23:41:54,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 205 transitions, 1749 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:54,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:54,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-24 23:41:54,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:56,869 INFO L124 PetriNetUnfolderBase]: 15030/24867 cut-off events. [2024-10-24 23:41:56,869 INFO L125 PetriNetUnfolderBase]: For 29505/29643 co-relation queries the response was YES. [2024-10-24 23:41:56,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71200 conditions, 24867 events. 15030/24867 cut-off events. For 29505/29643 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 184316 event pairs, 7538 based on Foata normal form. 42/19315 useless extension candidates. Maximal degree in co-relation 71159. Up to 21246 conditions per place. [2024-10-24 23:41:57,013 INFO L140 encePairwiseOnDemand]: 90/92 looper letters, 185 selfloop transitions, 1 changer transitions 0/211 dead transitions. [2024-10-24 23:41:57,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 211 transitions, 2130 flow [2024-10-24 23:41:57,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:41:57,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:41:57,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-10-24 23:41:57,014 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5181159420289855 [2024-10-24 23:41:57,014 INFO L175 Difference]: Start difference. First operand has 161 places, 205 transitions, 1749 flow. Second operand 3 states and 143 transitions. [2024-10-24 23:41:57,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 211 transitions, 2130 flow [2024-10-24 23:41:57,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 211 transitions, 1789 flow, removed 92 selfloop flow, removed 12 redundant places. [2024-10-24 23:41:57,036 INFO L231 Difference]: Finished difference. Result has 150 places, 204 transitions, 1402 flow [2024-10-24 23:41:57,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1402, PETRI_PLACES=150, PETRI_TRANSITIONS=204} [2024-10-24 23:41:57,037 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 63 predicate places. [2024-10-24 23:41:57,037 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 204 transitions, 1402 flow [2024-10-24 23:41:57,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:57,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:57,037 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:57,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 23:41:57,037 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:57,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:57,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1892108513, now seen corresponding path program 1 times [2024-10-24 23:41:57,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:57,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249636172] [2024-10-24 23:41:57,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:57,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:57,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:57,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249636172] [2024-10-24 23:41:57,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249636172] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:57,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699934623] [2024-10-24 23:41:57,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:57,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:57,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:57,099 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) [2024-10-24 23:41:57,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 23:41:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:57,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 23:41:57,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:57,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:57,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:57,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:57,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699934623] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:57,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:57,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 15 [2024-10-24 23:41:57,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562947866] [2024-10-24 23:41:57,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:57,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 23:41:57,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:57,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 23:41:57,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-10-24 23:41:57,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-10-24 23:41:57,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 204 transitions, 1402 flow. Second operand has 15 states, 15 states have (on average 25.4) internal successors, (381), 15 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:57,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:57,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-10-24 23:41:57,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:01,973 INFO L124 PetriNetUnfolderBase]: 30244/49570 cut-off events. [2024-10-24 23:42:01,974 INFO L125 PetriNetUnfolderBase]: For 65400/65566 co-relation queries the response was YES. [2024-10-24 23:42:02,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140557 conditions, 49570 events. 30244/49570 cut-off events. For 65400/65566 co-relation queries the response was YES. Maximal size of possible extension queue 1141. Compared 398271 event pairs, 13670 based on Foata normal form. 890/39550 useless extension candidates. Maximal degree in co-relation 140518. Up to 18015 conditions per place. [2024-10-24 23:42:02,593 INFO L140 encePairwiseOnDemand]: 77/92 looper letters, 379 selfloop transitions, 95 changer transitions 13/510 dead transitions. [2024-10-24 23:42:02,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 510 transitions, 4248 flow [2024-10-24 23:42:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 23:42:02,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-24 23:42:02,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 623 transitions. [2024-10-24 23:42:02,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3983375959079284 [2024-10-24 23:42:02,595 INFO L175 Difference]: Start difference. First operand has 150 places, 204 transitions, 1402 flow. Second operand 17 states and 623 transitions. [2024-10-24 23:42:02,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 510 transitions, 4248 flow [2024-10-24 23:42:02,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 510 transitions, 4246 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:42:02,655 INFO L231 Difference]: Finished difference. Result has 175 places, 267 transitions, 2375 flow [2024-10-24 23:42:02,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2375, PETRI_PLACES=175, PETRI_TRANSITIONS=267} [2024-10-24 23:42:02,656 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 88 predicate places. [2024-10-24 23:42:02,656 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 267 transitions, 2375 flow [2024-10-24 23:42:02,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 25.4) internal successors, (381), 15 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:42:02,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:02,656 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:42:02,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 23:42:02,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:02,857 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:42:02,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:02,857 INFO L85 PathProgramCache]: Analyzing trace with hash 363202246, now seen corresponding path program 1 times [2024-10-24 23:42:02,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:02,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866534153] [2024-10-24 23:42:02,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:02,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:03,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:42:03,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:03,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866534153] [2024-10-24 23:42:03,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866534153] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:42:03,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680852018] [2024-10-24 23:42:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:03,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:03,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:42:03,178 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) [2024-10-24 23:42:03,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 23:42:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:03,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-24 23:42:03,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:42:03,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 23:42:03,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-24 23:42:03,371 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:42:03,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-24 23:42:03,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-24 23:42:03,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:03,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:42:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:42:03,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680852018] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 23:42:03,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-24 23:42:03,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 19 [2024-10-24 23:42:03,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151570658] [2024-10-24 23:42:03,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:42:03,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:42:03,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:03,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:42:03,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-10-24 23:42:03,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 92 [2024-10-24 23:42:03,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 267 transitions, 2375 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:42:03,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:03,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 92 [2024-10-24 23:42:03,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:09,763 INFO L124 PetriNetUnfolderBase]: 34453/55012 cut-off events. [2024-10-24 23:42:09,763 INFO L125 PetriNetUnfolderBase]: For 81108/81344 co-relation queries the response was YES. [2024-10-24 23:42:10,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160699 conditions, 55012 events. 34453/55012 cut-off events. For 81108/81344 co-relation queries the response was YES. Maximal size of possible extension queue 1236. Compared 425991 event pairs, 10450 based on Foata normal form. 112/43120 useless extension candidates. Maximal degree in co-relation 160649. Up to 31410 conditions per place. [2024-10-24 23:42:10,453 INFO L140 encePairwiseOnDemand]: 82/92 looper letters, 267 selfloop transitions, 24 changer transitions 0/315 dead transitions. [2024-10-24 23:42:10,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 315 transitions, 3181 flow [2024-10-24 23:42:10,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:42:10,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:42:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-10-24 23:42:10,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5679347826086957 [2024-10-24 23:42:10,454 INFO L175 Difference]: Start difference. First operand has 175 places, 267 transitions, 2375 flow. Second operand 4 states and 209 transitions. [2024-10-24 23:42:10,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 315 transitions, 3181 flow [2024-10-24 23:42:10,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 315 transitions, 3153 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-24 23:42:10,522 INFO L231 Difference]: Finished difference. Result has 176 places, 272 transitions, 2466 flow [2024-10-24 23:42:10,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2466, PETRI_PLACES=176, PETRI_TRANSITIONS=272} [2024-10-24 23:42:10,523 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 89 predicate places. [2024-10-24 23:42:10,523 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 272 transitions, 2466 flow [2024-10-24 23:42:10,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:42:10,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:10,523 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:42:10,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 23:42:10,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-24 23:42:10,724 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:42:10,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:10,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1729185503, now seen corresponding path program 1 times [2024-10-24 23:42:10,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:10,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860831696] [2024-10-24 23:42:10,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:10,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:11,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:11,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860831696] [2024-10-24 23:42:11,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860831696] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:42:11,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798069327] [2024-10-24 23:42:11,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:11,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:11,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:42:11,067 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:42:11,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 23:42:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:11,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 23:42:11,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:42:11,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:42:11,201 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:42:11,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798069327] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:42:11,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:42:11,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 11 [2024-10-24 23:42:11,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507102356] [2024-10-24 23:42:11,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:42:11,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:42:11,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:11,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:42:11,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:42:11,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-10-24 23:42:11,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 272 transitions, 2466 flow. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:42:11,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:11,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-10-24 23:42:11,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:17,134 INFO L124 PetriNetUnfolderBase]: 34960/55411 cut-off events. [2024-10-24 23:42:17,135 INFO L125 PetriNetUnfolderBase]: For 112657/112887 co-relation queries the response was YES. [2024-10-24 23:42:17,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174821 conditions, 55411 events. 34960/55411 cut-off events. For 112657/112887 co-relation queries the response was YES. Maximal size of possible extension queue 1329. Compared 430102 event pairs, 12736 based on Foata normal form. 130/44125 useless extension candidates. Maximal degree in co-relation 174768. Up to 30407 conditions per place. [2024-10-24 23:42:17,769 INFO L140 encePairwiseOnDemand]: 84/92 looper letters, 307 selfloop transitions, 10 changer transitions 0/340 dead transitions. [2024-10-24 23:42:17,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 340 transitions, 3366 flow [2024-10-24 23:42:17,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:42:17,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:42:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 282 transitions. [2024-10-24 23:42:17,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-10-24 23:42:17,771 INFO L175 Difference]: Start difference. First operand has 176 places, 272 transitions, 2466 flow. Second operand 6 states and 282 transitions. [2024-10-24 23:42:17,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 340 transitions, 3366 flow [2024-10-24 23:42:17,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 340 transitions, 3366 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:42:17,841 INFO L231 Difference]: Finished difference. Result has 183 places, 272 transitions, 2492 flow [2024-10-24 23:42:17,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=2460, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2492, PETRI_PLACES=183, PETRI_TRANSITIONS=272} [2024-10-24 23:42:17,842 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 96 predicate places. [2024-10-24 23:42:17,842 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 272 transitions, 2492 flow [2024-10-24 23:42:17,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:42:17,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:17,842 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:42:17,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 23:42:18,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:18,043 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:42:18,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:18,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1728637731, now seen corresponding path program 1 times [2024-10-24 23:42:18,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:18,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600017327] [2024-10-24 23:42:18,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:18,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:42:18,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:18,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600017327] [2024-10-24 23:42:18,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600017327] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:42:18,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284841654] [2024-10-24 23:42:18,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:18,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:18,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:42:18,192 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:42:18,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 23:42:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:18,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:42:18,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:42:18,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:42:18,301 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:42:18,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284841654] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:42:18,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:42:18,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-10-24 23:42:18,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074344497] [2024-10-24 23:42:18,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:42:18,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:42:18,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:18,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:42:18,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 23:42:18,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-24 23:42:18,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 272 transitions, 2492 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:42:18,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:18,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-24 23:42:18,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:22,738 INFO L124 PetriNetUnfolderBase]: 21949/37468 cut-off events. [2024-10-24 23:42:22,738 INFO L125 PetriNetUnfolderBase]: For 91215/91403 co-relation queries the response was YES. [2024-10-24 23:42:22,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121085 conditions, 37468 events. 21949/37468 cut-off events. For 91215/91403 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 302260 event pairs, 18100 based on Foata normal form. 140/32712 useless extension candidates. Maximal degree in co-relation 121028. Up to 31797 conditions per place. [2024-10-24 23:42:23,006 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 242 selfloop transitions, 1 changer transitions 0/269 dead transitions. [2024-10-24 23:42:23,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 269 transitions, 2960 flow [2024-10-24 23:42:23,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:42:23,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:42:23,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-10-24 23:42:23,007 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-10-24 23:42:23,007 INFO L175 Difference]: Start difference. First operand has 183 places, 272 transitions, 2492 flow. Second operand 3 states and 135 transitions. [2024-10-24 23:42:23,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 269 transitions, 2960 flow [2024-10-24 23:42:23,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 269 transitions, 2947 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-24 23:42:23,071 INFO L231 Difference]: Finished difference. Result has 182 places, 269 transitions, 2463 flow [2024-10-24 23:42:23,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=2461, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2463, PETRI_PLACES=182, PETRI_TRANSITIONS=269} [2024-10-24 23:42:23,071 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 95 predicate places. [2024-10-24 23:42:23,071 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 269 transitions, 2463 flow [2024-10-24 23:42:23,072 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) [2024-10-24 23:42:23,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:23,072 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:42:23,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-24 23:42:23,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:23,272 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:42:23,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:23,273 INFO L85 PathProgramCache]: Analyzing trace with hash -2065141840, now seen corresponding path program 1 times [2024-10-24 23:42:23,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:23,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329931747] [2024-10-24 23:42:23,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:23,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:42:23,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:23,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329931747] [2024-10-24 23:42:23,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329931747] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:42:23,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:42:23,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:42:23,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228068293] [2024-10-24 23:42:23,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:42:23,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:42:23,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:23,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:42:23,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:42:23,346 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 92 [2024-10-24 23:42:23,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 269 transitions, 2463 flow. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:42:23,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:23,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 92 [2024-10-24 23:42:23,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand