./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/chl-chromosome-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 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/chl-chromosome-trans.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 f36f5593156fc25b34b4c706b0d898a2d66ee8bab5f6d91cd69ff9cf3c129193 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:57:55,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:57:55,868 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:57:55,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:57:55,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:57:55,906 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:57:55,906 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:57:55,907 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:57:55,907 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:57:55,908 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:57:55,908 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:57:55,909 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:57:55,910 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:57:55,915 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:57:55,915 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:57:55,915 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:57:55,916 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:57:55,916 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:57:55,916 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:57:55,916 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:57:55,916 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:57:55,919 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:57:55,919 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:57:55,919 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:57:55,919 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:57:55,920 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:57:55,920 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:57:55,920 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:57:55,920 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:57:55,921 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:57:55,921 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:57:55,922 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:57:55,922 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:57:55,922 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:57:55,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:57:55,923 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:57:55,923 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:57:55,923 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:57:55,923 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:57:55,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:57:55,924 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:57:55,924 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:57:55,924 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:57:55,925 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:57:55,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f36f5593156fc25b34b4c706b0d898a2d66ee8bab5f6d91cd69ff9cf3c129193 [2024-10-14 23:57:56,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:57:56,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:57:56,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:57:56,227 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:57:56,228 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:57:56,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2024-10-14 23:57:57,667 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:57:57,889 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:57:57,889 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2024-10-14 23:57:57,897 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6048c2ed/5d370c1848964cad8bec28f27ca9ecf0/FLAG27868c94f [2024-10-14 23:57:57,910 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6048c2ed/5d370c1848964cad8bec28f27ca9ecf0 [2024-10-14 23:57:57,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:57:57,914 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:57:57,916 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:57:57,916 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:57:57,922 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:57:57,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:57:57" (1/1) ... [2024-10-14 23:57:57,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d160350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:57, skipping insertion in model container [2024-10-14 23:57:57,923 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:57:57" (1/1) ... [2024-10-14 23:57:57,949 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:57:58,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:57:58,187 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:57:58,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:57:58,256 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:57:58,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:58 WrapperNode [2024-10-14 23:57:58,257 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:57:58,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:57:58,259 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:57:58,259 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:57:58,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:58" (1/1) ... [2024-10-14 23:57:58,278 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:58" (1/1) ... [2024-10-14 23:57:58,314 INFO L138 Inliner]: procedures = 25, calls = 32, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 323 [2024-10-14 23:57:58,315 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:57:58,315 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:57:58,316 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:57:58,316 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:57:58,328 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:58" (1/1) ... [2024-10-14 23:57:58,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:58" (1/1) ... [2024-10-14 23:57:58,334 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:58" (1/1) ... [2024-10-14 23:57:58,361 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 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]. [2024-10-14 23:57:58,364 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:58" (1/1) ... [2024-10-14 23:57:58,364 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:58" (1/1) ... [2024-10-14 23:57:58,382 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:58" (1/1) ... [2024-10-14 23:57:58,390 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:58" (1/1) ... [2024-10-14 23:57:58,394 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:58" (1/1) ... [2024-10-14 23:57:58,396 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:58" (1/1) ... [2024-10-14 23:57:58,405 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:57:58,406 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:57:58,406 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:57:58,406 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:57:58,407 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:58" (1/1) ... [2024-10-14 23:57:58,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:57:58,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:57:58,446 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) [2024-10-14 23:57:58,450 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 [2024-10-14 23:57:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:57:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 23:57:58,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 23:57:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 23:57:58,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 23:57:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 23:57:58,500 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 23:57:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 23:57:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 23:57:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 23:57:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 23:57:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 23:57:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:57:58,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:57:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 23:57:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 23:57:58,502 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 23:57:58,648 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:57:58,652 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:57:59,193 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:57:59,193 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:57:59,554 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:57:59,558 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-14 23:57:59,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:57:59 BoogieIcfgContainer [2024-10-14 23:57:59,559 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:57:59,562 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:57:59,563 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:57:59,566 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:57:59,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:57:57" (1/3) ... [2024-10-14 23:57:59,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2969e60f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:57:59, skipping insertion in model container [2024-10-14 23:57:59,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:58" (2/3) ... [2024-10-14 23:57:59,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2969e60f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:57:59, skipping insertion in model container [2024-10-14 23:57:59,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:57:59" (3/3) ... [2024-10-14 23:57:59,571 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2024-10-14 23:57:59,589 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:57:59,590 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-10-14 23:57:59,590 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:57:59,705 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 23:57:59,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 107 transitions, 235 flow [2024-10-14 23:57:59,822 INFO L124 PetriNetUnfolderBase]: 12/104 cut-off events. [2024-10-14 23:57:59,823 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 23:57:59,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 104 events. 12/104 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 384 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2024-10-14 23:57:59,831 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 107 transitions, 235 flow [2024-10-14 23:57:59,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 102 transitions, 219 flow [2024-10-14 23:57:59,850 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:57:59,859 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;@56a1d3dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:57:59,859 INFO L334 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2024-10-14 23:57:59,863 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:57:59,864 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-14 23:57:59,864 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:57:59,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:59,865 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 23:57:59,866 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-14 23:57:59,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:59,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1000784, now seen corresponding path program 1 times [2024-10-14 23:57:59,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:59,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336823955] [2024-10-14 23:57:59,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:59,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:00,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:00,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336823955] [2024-10-14 23:58:00,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336823955] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:00,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:58:00,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:58:00,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918056629] [2024-10-14 23:58:00,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:00,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:58:00,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:00,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:58:00,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:58:00,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-10-14 23:58:00,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 102 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-10-14 23:58:00,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:00,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-10-14 23:58:00,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:01,350 INFO L124 PetriNetUnfolderBase]: 4133/8574 cut-off events. [2024-10-14 23:58:01,350 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2024-10-14 23:58:01,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14289 conditions, 8574 events. 4133/8574 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 75082 event pairs, 2732 based on Foata normal form. 3/6721 useless extension candidates. Maximal degree in co-relation 13590. Up to 5489 conditions per place. [2024-10-14 23:58:01,479 INFO L140 encePairwiseOnDemand]: 91/107 looper letters, 50 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2024-10-14 23:58:01,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 111 transitions, 357 flow [2024-10-14 23:58:01,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:58:01,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:58:01,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 282 transitions. [2024-10-14 23:58:01,495 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6588785046728972 [2024-10-14 23:58:01,498 INFO L175 Difference]: Start difference. First operand has 100 places, 102 transitions, 219 flow. Second operand 4 states and 282 transitions. [2024-10-14 23:58:01,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 111 transitions, 357 flow [2024-10-14 23:58:01,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 111 transitions, 348 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 23:58:01,512 INFO L231 Difference]: Finished difference. Result has 101 places, 111 transitions, 298 flow [2024-10-14 23:58:01,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=101, PETRI_TRANSITIONS=111} [2024-10-14 23:58:01,518 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 1 predicate places. [2024-10-14 23:58:01,518 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 111 transitions, 298 flow [2024-10-14 23:58:01,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-10-14 23:58:01,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:01,519 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-14 23:58:01,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 23:58:01,520 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-14 23:58:01,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:01,520 INFO L85 PathProgramCache]: Analyzing trace with hash -249427598, now seen corresponding path program 1 times [2024-10-14 23:58:01,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:01,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293752778] [2024-10-14 23:58:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:01,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:01,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:01,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293752778] [2024-10-14 23:58:01,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293752778] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:58:01,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081284008] [2024-10-14 23:58:01,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:01,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:58:01,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:58:01,676 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) [2024-10-14 23:58:01,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 23:58:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:01,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:58:01,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:58:01,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:01,815 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:58:01,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081284008] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:01,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:58:01,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-14 23:58:01,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024272558] [2024-10-14 23:58:01,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:01,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:58:01,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:01,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:58:01,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:58:01,841 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-10-14 23:58:01,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 111 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 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) [2024-10-14 23:58:01,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:01,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-10-14 23:58:01,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:02,834 INFO L124 PetriNetUnfolderBase]: 4133/8571 cut-off events. [2024-10-14 23:58:02,835 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-10-14 23:58:02,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14235 conditions, 8571 events. 4133/8571 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 75080 event pairs, 2732 based on Foata normal form. 3/6723 useless extension candidates. Maximal degree in co-relation 14162. Up to 5474 conditions per place. [2024-10-14 23:58:02,906 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 40 selfloop transitions, 17 changer transitions 0/108 dead transitions. [2024-10-14 23:58:02,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 108 transitions, 400 flow [2024-10-14 23:58:02,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:58:02,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:58:02,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 384 transitions. [2024-10-14 23:58:02,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5981308411214953 [2024-10-14 23:58:02,911 INFO L175 Difference]: Start difference. First operand has 101 places, 111 transitions, 298 flow. Second operand 6 states and 384 transitions. [2024-10-14 23:58:02,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 108 transitions, 400 flow [2024-10-14 23:58:02,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 108 transitions, 400 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:58:02,915 INFO L231 Difference]: Finished difference. Result has 103 places, 108 transitions, 320 flow [2024-10-14 23:58:02,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=320, PETRI_PLACES=103, PETRI_TRANSITIONS=108} [2024-10-14 23:58:02,916 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 3 predicate places. [2024-10-14 23:58:02,916 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 108 transitions, 320 flow [2024-10-14 23:58:02,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 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) [2024-10-14 23:58:02,917 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:02,917 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-14 23:58:02,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 23:58:03,118 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 [2024-10-14 23:58:03,119 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-14 23:58:03,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:03,120 INFO L85 PathProgramCache]: Analyzing trace with hash 857680047, now seen corresponding path program 1 times [2024-10-14 23:58:03,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:03,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30916223] [2024-10-14 23:58:03,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:03,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:03,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:03,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30916223] [2024-10-14 23:58:03,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30916223] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:58:03,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693128086] [2024-10-14 23:58:03,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:03,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:58:03,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:58:03,234 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) [2024-10-14 23:58:03,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 23:58:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:03,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:58:03,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:58:03,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:03,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:58:03,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:03,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693128086] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:58:03,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:58:03,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-14 23:58:03,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035414031] [2024-10-14 23:58:03,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:58:03,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 23:58:03,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:03,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 23:58:03,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-14 23:58:03,447 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-10-14 23:58:03,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 108 transitions, 320 flow. Second operand has 12 states, 12 states have (on average 55.083333333333336) internal successors, (661), 12 states have internal predecessors, (661), 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) [2024-10-14 23:58:03,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:03,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-10-14 23:58:03,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:04,543 INFO L124 PetriNetUnfolderBase]: 4142/8607 cut-off events. [2024-10-14 23:58:04,544 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-10-14 23:58:04,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14376 conditions, 8607 events. 4142/8607 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 75478 event pairs, 2732 based on Foata normal form. 9/6765 useless extension candidates. Maximal degree in co-relation 14164. Up to 5489 conditions per place. [2024-10-14 23:58:04,620 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 47 selfloop transitions, 37 changer transitions 0/135 dead transitions. [2024-10-14 23:58:04,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 135 transitions, 662 flow [2024-10-14 23:58:04,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 23:58:04,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 23:58:04,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 633 transitions. [2024-10-14 23:58:04,624 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.591588785046729 [2024-10-14 23:58:04,624 INFO L175 Difference]: Start difference. First operand has 103 places, 108 transitions, 320 flow. Second operand 10 states and 633 transitions. [2024-10-14 23:58:04,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 135 transitions, 662 flow [2024-10-14 23:58:04,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 135 transitions, 579 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-10-14 23:58:04,629 INFO L231 Difference]: Finished difference. Result has 110 places, 135 transitions, 535 flow [2024-10-14 23:58:04,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=535, PETRI_PLACES=110, PETRI_TRANSITIONS=135} [2024-10-14 23:58:04,630 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 10 predicate places. [2024-10-14 23:58:04,630 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 135 transitions, 535 flow [2024-10-14 23:58:04,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 55.083333333333336) internal successors, (661), 12 states have internal predecessors, (661), 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) [2024-10-14 23:58:04,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:04,631 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:58:04,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 23:58:04,832 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 [2024-10-14 23:58:04,833 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-14 23:58:04,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:04,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1214103751, now seen corresponding path program 1 times [2024-10-14 23:58:04,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:04,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211213377] [2024-10-14 23:58:04,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:04,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:04,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:04,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211213377] [2024-10-14 23:58:04,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211213377] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:04,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:58:04,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:58:04,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191296740] [2024-10-14 23:58:04,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:04,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:58:04,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:04,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:58:04,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:58:05,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-10-14 23:58:05,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 135 transitions, 535 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2024-10-14 23:58:05,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:05,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-10-14 23:58:05,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:06,397 INFO L124 PetriNetUnfolderBase]: 8073/14774 cut-off events. [2024-10-14 23:58:06,398 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-10-14 23:58:06,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25950 conditions, 14774 events. 8073/14774 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 126510 event pairs, 2473 based on Foata normal form. 364/12263 useless extension candidates. Maximal degree in co-relation 25852. Up to 5062 conditions per place. [2024-10-14 23:58:06,659 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 131 selfloop transitions, 5 changer transitions 0/184 dead transitions. [2024-10-14 23:58:06,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 184 transitions, 911 flow [2024-10-14 23:58:06,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:58:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:58:06,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2024-10-14 23:58:06,661 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7453271028037384 [2024-10-14 23:58:06,661 INFO L175 Difference]: Start difference. First operand has 110 places, 135 transitions, 535 flow. Second operand 4 states and 319 transitions. [2024-10-14 23:58:06,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 184 transitions, 911 flow [2024-10-14 23:58:06,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 184 transitions, 874 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-14 23:58:06,670 INFO L231 Difference]: Finished difference. Result has 113 places, 137 transitions, 532 flow [2024-10-14 23:58:06,672 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=532, PETRI_PLACES=113, PETRI_TRANSITIONS=137} [2024-10-14 23:58:06,673 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 13 predicate places. [2024-10-14 23:58:06,673 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 137 transitions, 532 flow [2024-10-14 23:58:06,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2024-10-14 23:58:06,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:06,674 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:58:06,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 23:58:06,674 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-14 23:58:06,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:06,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1017488303, now seen corresponding path program 1 times [2024-10-14 23:58:06,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:06,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539295543] [2024-10-14 23:58:06,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:06,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:06,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:06,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:06,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539295543] [2024-10-14 23:58:06,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539295543] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:58:06,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:58:06,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:58:06,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373886522] [2024-10-14 23:58:06,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:58:06,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:58:06,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:06,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:58:06,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:58:06,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 107 [2024-10-14 23:58:06,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 137 transitions, 532 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2024-10-14 23:58:06,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:06,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 107 [2024-10-14 23:58:06,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:07,876 INFO L124 PetriNetUnfolderBase]: 5184/10990 cut-off events. [2024-10-14 23:58:07,877 INFO L125 PetriNetUnfolderBase]: For 1932/2198 co-relation queries the response was YES. [2024-10-14 23:58:07,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19701 conditions, 10990 events. 5184/10990 cut-off events. For 1932/2198 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 102048 event pairs, 3504 based on Foata normal form. 138/8944 useless extension candidates. Maximal degree in co-relation 19605. Up to 6912 conditions per place. [2024-10-14 23:58:08,011 INFO L140 encePairwiseOnDemand]: 100/107 looper letters, 68 selfloop transitions, 12 changer transitions 0/134 dead transitions. [2024-10-14 23:58:08,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 134 transitions, 679 flow [2024-10-14 23:58:08,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:58:08,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:58:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2024-10-14 23:58:08,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7289719626168224 [2024-10-14 23:58:08,013 INFO L175 Difference]: Start difference. First operand has 113 places, 137 transitions, 532 flow. Second operand 3 states and 234 transitions. [2024-10-14 23:58:08,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 134 transitions, 679 flow [2024-10-14 23:58:08,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 134 transitions, 667 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:58:08,075 INFO L231 Difference]: Finished difference. Result has 114 places, 134 transitions, 531 flow [2024-10-14 23:58:08,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=531, PETRI_PLACES=114, PETRI_TRANSITIONS=134} [2024-10-14 23:58:08,076 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 14 predicate places. [2024-10-14 23:58:08,077 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 134 transitions, 531 flow [2024-10-14 23:58:08,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2024-10-14 23:58:08,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:08,078 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-14 23:58:08,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 23:58:08,078 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-14 23:58:08,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:08,079 INFO L85 PathProgramCache]: Analyzing trace with hash -2117255407, now seen corresponding path program 2 times [2024-10-14 23:58:08,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:08,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094751477] [2024-10-14 23:58:08,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:08,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:08,262 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:58:08,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:08,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094751477] [2024-10-14 23:58:08,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094751477] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:58:08,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571344295] [2024-10-14 23:58:08,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 23:58:08,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:58:08,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:58:08,267 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) [2024-10-14 23:58:08,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 23:58:08,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 23:58:08,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:58:08,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:58:08,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:58:08,390 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-14 23:58:08,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:58:08,439 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-14 23:58:08,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571344295] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:58:08,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:58:08,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2024-10-14 23:58:08,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71051560] [2024-10-14 23:58:08,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:58:08,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 23:58:08,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:08,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 23:58:08,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-14 23:58:08,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-10-14 23:58:08,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 134 transitions, 531 flow. Second operand has 15 states, 15 states have (on average 55.333333333333336) internal successors, (830), 15 states have internal predecessors, (830), 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) [2024-10-14 23:58:08,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:08,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-10-14 23:58:08,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:09,603 INFO L124 PetriNetUnfolderBase]: 5187/10993 cut-off events. [2024-10-14 23:58:09,604 INFO L125 PetriNetUnfolderBase]: For 1944/2210 co-relation queries the response was YES. [2024-10-14 23:58:09,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19713 conditions, 10993 events. 5187/10993 cut-off events. For 1944/2210 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 102031 event pairs, 3504 based on Foata normal form. 138/8948 useless extension candidates. Maximal degree in co-relation 19608. Up to 6886 conditions per place. [2024-10-14 23:58:09,731 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 37 selfloop transitions, 49 changer transitions 0/137 dead transitions. [2024-10-14 23:58:09,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 137 transitions, 710 flow [2024-10-14 23:58:09,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 23:58:09,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 23:58:09,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 789 transitions. [2024-10-14 23:58:09,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5672178289000719 [2024-10-14 23:58:09,737 INFO L175 Difference]: Start difference. First operand has 114 places, 134 transitions, 531 flow. Second operand 13 states and 789 transitions. [2024-10-14 23:58:09,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 137 transitions, 710 flow [2024-10-14 23:58:09,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 137 transitions, 652 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-14 23:58:09,774 INFO L231 Difference]: Finished difference. Result has 117 places, 137 transitions, 578 flow [2024-10-14 23:58:09,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=578, PETRI_PLACES=117, PETRI_TRANSITIONS=137} [2024-10-14 23:58:09,776 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 17 predicate places. [2024-10-14 23:58:09,776 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 137 transitions, 578 flow [2024-10-14 23:58:09,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 55.333333333333336) internal successors, (830), 15 states have internal predecessors, (830), 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) [2024-10-14 23:58:09,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:09,778 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:58:09,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 23:58:09,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:58:09,980 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-14 23:58:09,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:09,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1237586700, now seen corresponding path program 1 times [2024-10-14 23:58:09,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:09,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306460198] [2024-10-14 23:58:09,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:09,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:58:10,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:10,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306460198] [2024-10-14 23:58:10,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306460198] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:58:10,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808925963] [2024-10-14 23:58:10,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:10,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:58:10,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:58:10,135 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) [2024-10-14 23:58:10,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 23:58:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:10,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 23:58:10,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:58:10,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:58:10,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:58:10,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:58:10,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808925963] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:58:10,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:58:10,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-14 23:58:10,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935144909] [2024-10-14 23:58:10,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:58:10,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 23:58:10,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:10,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 23:58:10,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-14 23:58:10,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-10-14 23:58:10,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 137 transitions, 578 flow. Second operand has 11 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 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) [2024-10-14 23:58:10,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:10,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-10-14 23:58:10,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:11,456 INFO L124 PetriNetUnfolderBase]: 5181/10987 cut-off events. [2024-10-14 23:58:11,456 INFO L125 PetriNetUnfolderBase]: For 1941/2207 co-relation queries the response was YES. [2024-10-14 23:58:11,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19705 conditions, 10987 events. 5181/10987 cut-off events. For 1941/2207 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 101875 event pairs, 3504 based on Foata normal form. 135/8932 useless extension candidates. Maximal degree in co-relation 19481. Up to 6893 conditions per place. [2024-10-14 23:58:11,525 INFO L140 encePairwiseOnDemand]: 97/107 looper letters, 43 selfloop transitions, 37 changer transitions 0/131 dead transitions. [2024-10-14 23:58:11,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 131 transitions, 696 flow [2024-10-14 23:58:11,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:58:11,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:58:11,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 444 transitions. [2024-10-14 23:58:11,529 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5927903871829105 [2024-10-14 23:58:11,529 INFO L175 Difference]: Start difference. First operand has 117 places, 137 transitions, 578 flow. Second operand 7 states and 444 transitions. [2024-10-14 23:58:11,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 131 transitions, 696 flow [2024-10-14 23:58:11,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 131 transitions, 540 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-10-14 23:58:11,561 INFO L231 Difference]: Finished difference. Result has 111 places, 131 transitions, 454 flow [2024-10-14 23:58:11,561 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=454, PETRI_PLACES=111, PETRI_TRANSITIONS=131} [2024-10-14 23:58:11,563 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 11 predicate places. [2024-10-14 23:58:11,563 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 131 transitions, 454 flow [2024-10-14 23:58:11,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 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) [2024-10-14 23:58:11,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:11,564 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:58:11,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 23:58:11,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:58:11,768 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-14 23:58:11,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:11,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1669756116, now seen corresponding path program 2 times [2024-10-14 23:58:11,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:11,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305217524] [2024-10-14 23:58:11,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:11,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:11,991 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-14 23:58:11,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:11,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305217524] [2024-10-14 23:58:11,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305217524] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:58:11,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113709706] [2024-10-14 23:58:11,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 23:58:11,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:58:11,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:58:11,994 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) [2024-10-14 23:58:11,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 23:58:12,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 23:58:12,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:58:12,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 23:58:12,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:58:12,239 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-14 23:58:12,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:58:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-14 23:58:12,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113709706] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:58:12,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:58:12,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-14 23:58:12,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366676041] [2024-10-14 23:58:12,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:58:12,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 23:58:12,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:58:12,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 23:58:12,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-10-14 23:58:12,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-10-14 23:58:12,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 131 transitions, 454 flow. Second operand has 18 states, 18 states have (on average 55.611111111111114) internal successors, (1001), 18 states have internal predecessors, (1001), 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) [2024-10-14 23:58:12,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:58:12,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-10-14 23:58:12,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:58:13,261 INFO L124 PetriNetUnfolderBase]: 5175/10981 cut-off events. [2024-10-14 23:58:13,261 INFO L125 PetriNetUnfolderBase]: For 1905/2171 co-relation queries the response was YES. [2024-10-14 23:58:13,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19645 conditions, 10981 events. 5175/10981 cut-off events. For 1905/2171 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 101702 event pairs, 3504 based on Foata normal form. 137/8935 useless extension candidates. Maximal degree in co-relation 19483. Up to 6885 conditions per place. [2024-10-14 23:58:13,366 INFO L140 encePairwiseOnDemand]: 97/107 looper letters, 41 selfloop transitions, 33 changer transitions 0/125 dead transitions. [2024-10-14 23:58:13,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 125 transitions, 572 flow [2024-10-14 23:58:13,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 23:58:13,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 23:58:13,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 672 transitions. [2024-10-14 23:58:13,369 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5709430756159728 [2024-10-14 23:58:13,369 INFO L175 Difference]: Start difference. First operand has 111 places, 131 transitions, 454 flow. Second operand 11 states and 672 transitions. [2024-10-14 23:58:13,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 125 transitions, 572 flow [2024-10-14 23:58:13,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 125 transitions, 506 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 23:58:13,393 INFO L231 Difference]: Finished difference. Result has 115 places, 125 transitions, 424 flow [2024-10-14 23:58:13,393 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=424, PETRI_PLACES=115, PETRI_TRANSITIONS=125} [2024-10-14 23:58:13,394 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 15 predicate places. [2024-10-14 23:58:13,394 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 125 transitions, 424 flow [2024-10-14 23:58:13,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 55.611111111111114) internal successors, (1001), 18 states have internal predecessors, (1001), 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) [2024-10-14 23:58:13,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:58:13,395 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:58:13,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 23:58:13,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:58:13,596 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-14 23:58:13,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:58:13,597 INFO L85 PathProgramCache]: Analyzing trace with hash -242379596, now seen corresponding path program 3 times [2024-10-14 23:58:13,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:58:13,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539355839] [2024-10-14 23:58:13,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:58:13,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:58:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:58:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-14 23:58:15,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:58:15,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539355839] [2024-10-14 23:58:15,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539355839] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:58:15,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145160810] [2024-10-14 23:58:15,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 23:58:15,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:58:15,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:58:15,154 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) [2024-10-14 23:58:15,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 23:58:15,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-14 23:58:15,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:58:15,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-10-14 23:58:15,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:58:15,459 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 [2024-10-14 23:58:15,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 23:58:15,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-14 23:58:15,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 23:58:15,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-10-14 23:58:15,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 23:58:15,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-10-14 23:58:15,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 23:58:15,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-10-14 23:58:15,868 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-14 23:58:15,869 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 [2024-10-14 23:58:15,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-14 23:58:15,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-14 23:58:15,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-14 23:58:15,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-14 23:58:15,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-14 23:58:15,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-14 23:58:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 9 proven. 52 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-14 23:58:16,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:59:26,006 INFO L349 Elim1Store]: treesize reduction 233, result has 21.0 percent of original size [2024-10-14 23:59:26,007 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 72 [2024-10-14 23:59:26,022 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 23:59:26,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-10-14 23:59:26,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-10-14 23:59:26,123 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 33 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-14 23:59:26,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145160810] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:59:26,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:59:26,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 15] total 43 [2024-10-14 23:59:26,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438324166] [2024-10-14 23:59:26,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:59:26,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-14 23:59:26,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:59:26,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-14 23:59:26,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1628, Unknown=23, NotChecked=0, Total=1892 [2024-10-14 23:59:30,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]