./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/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.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 0d8fc97f7c37032d6079f8a24b87bc520ff0a9c17c3894514011566166a643e8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:39:55,382 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:39:55,434 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:39:55,437 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:39:55,437 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:39:55,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:39:55,473 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:39:55,474 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:39:55,474 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:39:55,478 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:39:55,478 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:39:55,479 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:39:55,479 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:39:55,479 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:39:55,479 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:39:55,480 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:39:55,480 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:39:55,480 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:39:55,480 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:39:55,480 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:39:55,481 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:39:55,481 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:39:55,481 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:39:55,481 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:39:55,482 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:39:55,482 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:39:55,482 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:39:55,482 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:39:55,482 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:39:55,482 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:39:55,483 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:39:55,483 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:39:55,483 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:39:55,483 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:39:55,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:39:55,483 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:39:55,484 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:39:55,484 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:39:55,484 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:39:55,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:39:55,488 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:39:55,489 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:39:55,489 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:39:55,489 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:39:55,489 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8fc97f7c37032d6079f8a24b87bc520ff0a9c17c3894514011566166a643e8 [2024-10-24 23:39:55,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:39:55,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:39:55,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:39:55,764 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:39:55,765 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:39:55,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2024-10-24 23:39:57,106 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:39:57,269 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:39:57,270 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2024-10-24 23:39:57,285 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c47cabce/7e44ee98af694b028158f471f31182c4/FLAG61ce93564 [2024-10-24 23:39:57,303 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c47cabce/7e44ee98af694b028158f471f31182c4 [2024-10-24 23:39:57,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:39:57,308 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:39:57,310 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:39:57,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:39:57,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:39:57,315 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:39:57" (1/1) ... [2024-10-24 23:39:57,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37cd25cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:57, skipping insertion in model container [2024-10-24 23:39:57,316 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:39:57" (1/1) ... [2024-10-24 23:39:57,342 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:39:57,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:39:57,546 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:39:57,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:39:57,600 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:39:57,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:57 WrapperNode [2024-10-24 23:39:57,601 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:39:57,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:39:57,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:39:57,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:39:57,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:57" (1/1) ... [2024-10-24 23:39:57,615 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:57" (1/1) ... [2024-10-24 23:39:57,635 INFO L138 Inliner]: procedures = 24, calls = 39, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 118 [2024-10-24 23:39:57,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:39:57,636 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:39:57,636 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:39:57,637 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:39:57,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:57" (1/1) ... [2024-10-24 23:39:57,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:57" (1/1) ... [2024-10-24 23:39:57,649 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:57" (1/1) ... [2024-10-24 23:39:57,662 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-24 23:39:57,663 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:57" (1/1) ... [2024-10-24 23:39:57,663 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:57" (1/1) ... [2024-10-24 23:39:57,668 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:57" (1/1) ... [2024-10-24 23:39:57,671 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:57" (1/1) ... [2024-10-24 23:39:57,673 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:57" (1/1) ... [2024-10-24 23:39:57,674 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:57" (1/1) ... [2024-10-24 23:39:57,676 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:39:57,676 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:39:57,677 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:39:57,677 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:39:57,678 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:57" (1/1) ... [2024-10-24 23:39:57,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:39:57,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:39:57,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 23:39:57,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 23:39:57,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:39:57,786 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:39:57,786 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:39:57,786 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:39:57,786 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:39:57,790 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 23:39:57,790 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 23:39:57,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:39:57,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:39:57,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:39:57,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:39:57,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 23:39:57,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 23:39:57,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 23:39:57,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:39:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:39:57,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:39:57,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:39:57,794 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:39:57,953 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:39:57,956 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:39:58,351 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:39:58,352 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:39:58,563 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:39:58,563 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-24 23:39:58,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:39:58 BoogieIcfgContainer [2024-10-24 23:39:58,563 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:39:58,567 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:39:58,567 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:39:58,570 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:39:58,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:39:57" (1/3) ... [2024-10-24 23:39:58,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f9582ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:39:58, skipping insertion in model container [2024-10-24 23:39:58,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:57" (2/3) ... [2024-10-24 23:39:58,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f9582ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:39:58, skipping insertion in model container [2024-10-24 23:39:58,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:39:58" (3/3) ... [2024-10-24 23:39:58,572 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2024-10-24 23:39:58,584 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:39:58,584 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-24 23:39:58,584 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:39:58,623 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 23:39:58,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 47 transitions, 115 flow [2024-10-24 23:39:58,676 INFO L124 PetriNetUnfolderBase]: 3/44 cut-off events. [2024-10-24 23:39:58,678 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 23:39:58,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 3/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-10-24 23:39:58,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 47 transitions, 115 flow [2024-10-24 23:39:58,684 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 41 transitions, 94 flow [2024-10-24 23:39:58,691 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:39:58,696 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;@6530259a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:39:58,696 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-24 23:39:58,698 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:39:58,698 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:39:58,698 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:39:58,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:58,699 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:39:58,699 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-24 23:39:58,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:58,703 INFO L85 PathProgramCache]: Analyzing trace with hash 511311, now seen corresponding path program 1 times [2024-10-24 23:39:58,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:58,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974096249] [2024-10-24 23:39:58,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:58,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:58,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:58,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:58,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974096249] [2024-10-24 23:39:58,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974096249] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:58,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:58,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:39:58,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089001799] [2024-10-24 23:39:58,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:58,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:39:59,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:59,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:39:59,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:39:59,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-10-24 23:39:59,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:59,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:59,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-10-24 23:39:59,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:59,272 INFO L124 PetriNetUnfolderBase]: 374/651 cut-off events. [2024-10-24 23:39:59,273 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-24 23:39:59,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1273 conditions, 651 events. 374/651 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3349 event pairs, 252 based on Foata normal form. 1/565 useless extension candidates. Maximal degree in co-relation 1180. Up to 544 conditions per place. [2024-10-24 23:39:59,283 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 21 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-10-24 23:39:59,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 150 flow [2024-10-24 23:39:59,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:39:59,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:39:59,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-10-24 23:39:59,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6117021276595744 [2024-10-24 23:39:59,295 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 94 flow. Second operand 4 states and 115 transitions. [2024-10-24 23:39:59,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 150 flow [2024-10-24 23:39:59,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 144 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 23:39:59,301 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 117 flow [2024-10-24 23:39:59,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2024-10-24 23:39:59,306 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2024-10-24 23:39:59,306 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 117 flow [2024-10-24 23:39:59,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:59,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:59,307 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-24 23:39:59,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:39:59,307 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-24 23:39:59,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:59,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1946912053, now seen corresponding path program 1 times [2024-10-24 23:39:59,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:59,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477380858] [2024-10-24 23:39:59,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:59,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:59,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:59,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:59,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477380858] [2024-10-24 23:39:59,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477380858] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:39:59,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984637058] [2024-10-24 23:39:59,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:59,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:39:59,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:39:59,449 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:39:59,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:39:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:59,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:39:59,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:39:59,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:59,587 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:39:59,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984637058] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:59,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:39:59,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-24 23:39:59,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587785471] [2024-10-24 23:39:59,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:59,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:39:59,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:59,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:39:59,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:39:59,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-10-24 23:39:59,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:59,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:59,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-10-24 23:39:59,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:59,891 INFO L124 PetriNetUnfolderBase]: 374/650 cut-off events. [2024-10-24 23:39:59,891 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 23:39:59,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1271 conditions, 650 events. 374/650 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3333 event pairs, 252 based on Foata normal form. 1/565 useless extension candidates. Maximal degree in co-relation 1244. Up to 539 conditions per place. [2024-10-24 23:39:59,895 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 17 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-10-24 23:39:59,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 161 flow [2024-10-24 23:39:59,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:39:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:39:59,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-10-24 23:39:59,901 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5567375886524822 [2024-10-24 23:39:59,901 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 117 flow. Second operand 6 states and 157 transitions. [2024-10-24 23:39:59,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 161 flow [2024-10-24 23:39:59,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 43 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:39:59,902 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 124 flow [2024-10-24 23:39:59,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2024-10-24 23:39:59,907 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2024-10-24 23:39:59,907 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 124 flow [2024-10-24 23:39:59,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:59,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:59,908 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-24 23:39:59,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 23:40:00,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:00,109 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-24 23:40:00,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:00,113 INFO L85 PathProgramCache]: Analyzing trace with hash -224731004, now seen corresponding path program 1 times [2024-10-24 23:40:00,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:00,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351349767] [2024-10-24 23:40:00,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:00,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:00,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:00,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:00,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351349767] [2024-10-24 23:40:00,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351349767] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:00,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951656507] [2024-10-24 23:40:00,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:00,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:00,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:00,212 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:00,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:40:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:00,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:40:00,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:00,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:00,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951656507] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:00,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:00,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-24 23:40:00,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564301091] [2024-10-24 23:40:00,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:00,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:40:00,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:00,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:40:00,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:40:00,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-10-24 23:40:00,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 124 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:00,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:00,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-10-24 23:40:00,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:00,456 INFO L124 PetriNetUnfolderBase]: 377/662 cut-off events. [2024-10-24 23:40:00,456 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-24 23:40:00,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1315 conditions, 662 events. 377/662 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3437 event pairs, 252 based on Foata normal form. 3/577 useless extension candidates. Maximal degree in co-relation 1245. Up to 546 conditions per place. [2024-10-24 23:40:00,478 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 20 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-10-24 23:40:00,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 244 flow [2024-10-24 23:40:00,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:40:00,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:40:00,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-10-24 23:40:00,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2024-10-24 23:40:00,482 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 124 flow. Second operand 10 states and 256 transitions. [2024-10-24 23:40:00,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 52 transitions, 244 flow [2024-10-24 23:40:00,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 198 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-24 23:40:00,484 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 176 flow [2024-10-24 23:40:00,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=176, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-10-24 23:40:00,484 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 11 predicate places. [2024-10-24 23:40:00,485 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 176 flow [2024-10-24 23:40:00,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:00,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:00,485 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:00,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 23:40:00,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-24 23:40:00,690 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-24 23:40:00,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:00,691 INFO L85 PathProgramCache]: Analyzing trace with hash -960727794, now seen corresponding path program 1 times [2024-10-24 23:40:00,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:00,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393611699] [2024-10-24 23:40:00,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:00,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:00,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:00,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:00,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393611699] [2024-10-24 23:40:00,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393611699] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:00,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:00,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:40:00,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20356037] [2024-10-24 23:40:00,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:00,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:40:00,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:00,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:40:00,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:40:00,755 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-10-24 23:40:00,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:00,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:00,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-10-24 23:40:00,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:01,013 INFO L124 PetriNetUnfolderBase]: 788/1357 cut-off events. [2024-10-24 23:40:01,014 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-10-24 23:40:01,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 1357 events. 788/1357 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7516 event pairs, 421 based on Foata normal form. 32/1264 useless extension candidates. Maximal degree in co-relation 2652. Up to 858 conditions per place. [2024-10-24 23:40:01,020 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 56 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-10-24 23:40:01,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 352 flow [2024-10-24 23:40:01,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:40:01,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:40:01,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-10-24 23:40:01,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6914893617021277 [2024-10-24 23:40:01,021 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 176 flow. Second operand 4 states and 130 transitions. [2024-10-24 23:40:01,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 352 flow [2024-10-24 23:40:01,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 341 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-24 23:40:01,023 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 194 flow [2024-10-24 23:40:01,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-10-24 23:40:01,024 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 14 predicate places. [2024-10-24 23:40:01,024 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 194 flow [2024-10-24 23:40:01,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:01,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:01,025 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:01,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:40:01,025 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-24 23:40:01,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:01,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1620140299, now seen corresponding path program 1 times [2024-10-24 23:40:01,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:01,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253168676] [2024-10-24 23:40:01,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:01,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:01,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:01,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253168676] [2024-10-24 23:40:01,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253168676] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:01,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:01,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:40:01,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846358369] [2024-10-24 23:40:01,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:01,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:40:01,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:01,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:40:01,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:40:01,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-10-24 23:40:01,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:01,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:01,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-10-24 23:40:01,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:01,259 INFO L124 PetriNetUnfolderBase]: 949/1599 cut-off events. [2024-10-24 23:40:01,260 INFO L125 PetriNetUnfolderBase]: For 304/563 co-relation queries the response was YES. [2024-10-24 23:40:01,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3586 conditions, 1599 events. 949/1599 cut-off events. For 304/563 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 9091 event pairs, 525 based on Foata normal form. 168/1664 useless extension candidates. Maximal degree in co-relation 3550. Up to 1034 conditions per place. [2024-10-24 23:40:01,268 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 60 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2024-10-24 23:40:01,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 81 transitions, 400 flow [2024-10-24 23:40:01,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:40:01,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:40:01,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-10-24 23:40:01,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6808510638297872 [2024-10-24 23:40:01,269 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 194 flow. Second operand 4 states and 128 transitions. [2024-10-24 23:40:01,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 81 transitions, 400 flow [2024-10-24 23:40:01,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 81 transitions, 393 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:40:01,272 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 220 flow [2024-10-24 23:40:01,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-10-24 23:40:01,272 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2024-10-24 23:40:01,272 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 220 flow [2024-10-24 23:40:01,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:01,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:01,273 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-24 23:40:01,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:40:01,273 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-24 23:40:01,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:01,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1689510272, now seen corresponding path program 2 times [2024-10-24 23:40:01,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:01,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027680041] [2024-10-24 23:40:01,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:01,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:01,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:01,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027680041] [2024-10-24 23:40:01,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027680041] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:01,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285830434] [2024-10-24 23:40:01,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:40:01,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:01,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:01,427 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:01,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:40:01,503 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:40:01,503 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:40:01,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:40:01,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:01,553 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:40:01,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:40:01,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285830434] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:01,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:01,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-24 23:40:01,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907017878] [2024-10-24 23:40:01,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:01,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 23:40:01,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:01,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 23:40:01,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-24 23:40:01,603 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-10-24 23:40:01,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 220 flow. Second operand has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:01,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:01,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-10-24 23:40:01,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:01,898 INFO L124 PetriNetUnfolderBase]: 545/953 cut-off events. [2024-10-24 23:40:01,898 INFO L125 PetriNetUnfolderBase]: For 331/544 co-relation queries the response was YES. [2024-10-24 23:40:01,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2299 conditions, 953 events. 545/953 cut-off events. For 331/544 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5246 event pairs, 387 based on Foata normal form. 112/951 useless extension candidates. Maximal degree in co-relation 2254. Up to 786 conditions per place. [2024-10-24 23:40:01,906 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 20 selfloop transitions, 19 changer transitions 0/60 dead transitions. [2024-10-24 23:40:01,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 60 transitions, 304 flow [2024-10-24 23:40:01,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 23:40:01,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 23:40:01,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 345 transitions. [2024-10-24 23:40:01,908 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5243161094224924 [2024-10-24 23:40:01,908 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 220 flow. Second operand 14 states and 345 transitions. [2024-10-24 23:40:01,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 60 transitions, 304 flow [2024-10-24 23:40:01,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 60 transitions, 289 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-24 23:40:01,911 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 249 flow [2024-10-24 23:40:01,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=249, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2024-10-24 23:40:01,912 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 25 predicate places. [2024-10-24 23:40:01,912 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 249 flow [2024-10-24 23:40:01,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:01,913 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:01,913 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:01,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 23:40:02,113 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 [2024-10-24 23:40:02,114 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-24 23:40:02,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:02,115 INFO L85 PathProgramCache]: Analyzing trace with hash -339026072, now seen corresponding path program 1 times [2024-10-24 23:40:02,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:02,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658362506] [2024-10-24 23:40:02,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:02,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:02,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:40:02,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:02,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658362506] [2024-10-24 23:40:02,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658362506] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:02,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:02,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:40:02,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141416559] [2024-10-24 23:40:02,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:02,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:40:02,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:02,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:40:02,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:40:02,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2024-10-24 23:40:02,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:02,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:02,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2024-10-24 23:40:02,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:02,262 INFO L124 PetriNetUnfolderBase]: 544/952 cut-off events. [2024-10-24 23:40:02,262 INFO L125 PetriNetUnfolderBase]: For 316/529 co-relation queries the response was YES. [2024-10-24 23:40:02,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2228 conditions, 952 events. 544/952 cut-off events. For 316/529 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5179 event pairs, 387 based on Foata normal form. 110/945 useless extension candidates. Maximal degree in co-relation 2138. Up to 796 conditions per place. [2024-10-24 23:40:02,267 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 36 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-10-24 23:40:02,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 59 transitions, 320 flow [2024-10-24 23:40:02,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:40:02,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:40:02,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-10-24 23:40:02,268 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6737588652482269 [2024-10-24 23:40:02,268 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 249 flow. Second operand 3 states and 95 transitions. [2024-10-24 23:40:02,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 59 transitions, 320 flow [2024-10-24 23:40:02,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 59 transitions, 252 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-10-24 23:40:02,270 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 180 flow [2024-10-24 23:40:02,270 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-10-24 23:40:02,271 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 15 predicate places. [2024-10-24 23:40:02,271 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 180 flow [2024-10-24 23:40:02,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:02,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:02,271 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:02,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 23:40:02,272 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-24 23:40:02,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:02,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1745681260, now seen corresponding path program 1 times [2024-10-24 23:40:02,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:02,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791387498] [2024-10-24 23:40:02,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:02,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:02,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:40:02,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:02,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791387498] [2024-10-24 23:40:02,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791387498] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:02,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27073106] [2024-10-24 23:40:02,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:02,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:02,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:02,340 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:02,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:40:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:02,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 23:40:02,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:02,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:02,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:02,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27073106] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:02,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:02,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-24 23:40:02,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035721814] [2024-10-24 23:40:02,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:02,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 23:40:02,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:02,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 23:40:02,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-24 23:40:02,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:40:02,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 180 flow. Second operand has 19 states, 19 states have (on average 19.105263157894736) internal successors, (363), 19 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:02,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:02,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:40:02,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:03,341 INFO L124 PetriNetUnfolderBase]: 1684/2744 cut-off events. [2024-10-24 23:40:03,342 INFO L125 PetriNetUnfolderBase]: For 753/1162 co-relation queries the response was YES. [2024-10-24 23:40:03,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6625 conditions, 2744 events. 1684/2744 cut-off events. For 753/1162 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 16405 event pairs, 366 based on Foata normal form. 287/2890 useless extension candidates. Maximal degree in co-relation 6608. Up to 426 conditions per place. [2024-10-24 23:40:03,357 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 118 selfloop transitions, 25 changer transitions 8/166 dead transitions. [2024-10-24 23:40:03,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 166 transitions, 804 flow [2024-10-24 23:40:03,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 23:40:03,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 23:40:03,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 364 transitions. [2024-10-24 23:40:03,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-10-24 23:40:03,359 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 180 flow. Second operand 14 states and 364 transitions. [2024-10-24 23:40:03,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 166 transitions, 804 flow [2024-10-24 23:40:03,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 166 transitions, 800 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:40:03,364 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 248 flow [2024-10-24 23:40:03,364 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=248, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2024-10-24 23:40:03,364 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2024-10-24 23:40:03,365 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 248 flow [2024-10-24 23:40:03,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 19.105263157894736) internal successors, (363), 19 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:03,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:03,365 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:03,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 23:40:03,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:03,566 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-24 23:40:03,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:03,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2112147867, now seen corresponding path program 1 times [2024-10-24 23:40:03,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:03,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581791992] [2024-10-24 23:40:03,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:03,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:40:03,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:03,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581791992] [2024-10-24 23:40:03,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581791992] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:03,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632075638] [2024-10-24 23:40:03,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:03,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:03,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:03,642 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:03,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 23:40:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:03,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 23:40:03,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:03,802 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:03,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:03,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632075638] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:03,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:03,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-24 23:40:03,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283030582] [2024-10-24 23:40:03,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:03,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 23:40:03,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:03,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 23:40:03,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-24 23:40:04,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:40:04,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 248 flow. Second operand has 19 states, 19 states have (on average 19.31578947368421) internal successors, (367), 19 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:04,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:04,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:40:04,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:04,556 INFO L124 PetriNetUnfolderBase]: 1703/2840 cut-off events. [2024-10-24 23:40:04,556 INFO L125 PetriNetUnfolderBase]: For 1888/1960 co-relation queries the response was YES. [2024-10-24 23:40:04,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7362 conditions, 2840 events. 1703/2840 cut-off events. For 1888/1960 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 17674 event pairs, 399 based on Foata normal form. 78/2797 useless extension candidates. Maximal degree in co-relation 4087. Up to 454 conditions per place. [2024-10-24 23:40:04,571 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 77 selfloop transitions, 19 changer transitions 50/160 dead transitions. [2024-10-24 23:40:04,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 160 transitions, 889 flow [2024-10-24 23:40:04,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 23:40:04,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 23:40:04,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 357 transitions. [2024-10-24 23:40:04,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-10-24 23:40:04,573 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 248 flow. Second operand 14 states and 357 transitions. [2024-10-24 23:40:04,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 160 transitions, 889 flow [2024-10-24 23:40:04,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 160 transitions, 812 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-10-24 23:40:04,578 INFO L231 Difference]: Finished difference. Result has 80 places, 56 transitions, 220 flow [2024-10-24 23:40:04,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=220, PETRI_PLACES=80, PETRI_TRANSITIONS=56} [2024-10-24 23:40:04,579 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 32 predicate places. [2024-10-24 23:40:04,579 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 56 transitions, 220 flow [2024-10-24 23:40:04,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 19.31578947368421) internal successors, (367), 19 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:04,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:04,579 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:04,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 23:40:04,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:04,784 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-24 23:40:04,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:04,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1348538838, now seen corresponding path program 1 times [2024-10-24 23:40:04,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:04,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803566798] [2024-10-24 23:40:04,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:04,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:04,868 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:40:04,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:04,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803566798] [2024-10-24 23:40:04,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803566798] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:04,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573141253] [2024-10-24 23:40:04,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:04,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:04,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:04,873 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:04,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 23:40:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:04,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:40:04,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:04,960 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:40:04,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:40:04,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573141253] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:04,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:04,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-24 23:40:04,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294668976] [2024-10-24 23:40:04,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:04,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:40:04,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:04,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:40:04,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:40:05,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-10-24 23:40:05,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 56 transitions, 220 flow. Second operand has 12 states, 12 states have (on average 22.0) internal successors, (264), 12 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:05,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:05,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-10-24 23:40:05,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:05,408 INFO L124 PetriNetUnfolderBase]: 1899/3357 cut-off events. [2024-10-24 23:40:05,408 INFO L125 PetriNetUnfolderBase]: For 2475/2569 co-relation queries the response was YES. [2024-10-24 23:40:05,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8727 conditions, 3357 events. 1899/3357 cut-off events. For 2475/2569 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 20679 event pairs, 635 based on Foata normal form. 132/3363 useless extension candidates. Maximal degree in co-relation 5669. Up to 1261 conditions per place. [2024-10-24 23:40:05,427 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 137 selfloop transitions, 13 changer transitions 0/165 dead transitions. [2024-10-24 23:40:05,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 165 transitions, 922 flow [2024-10-24 23:40:05,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:40:05,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:40:05,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 322 transitions. [2024-10-24 23:40:05,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6851063829787234 [2024-10-24 23:40:05,429 INFO L175 Difference]: Start difference. First operand has 80 places, 56 transitions, 220 flow. Second operand 10 states and 322 transitions. [2024-10-24 23:40:05,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 165 transitions, 922 flow [2024-10-24 23:40:05,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 165 transitions, 817 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-10-24 23:40:05,435 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 249 flow [2024-10-24 23:40:05,435 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=249, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2024-10-24 23:40:05,436 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 27 predicate places. [2024-10-24 23:40:05,436 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 249 flow [2024-10-24 23:40:05,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.0) internal successors, (264), 12 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:05,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:05,437 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:05,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 23:40:05,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:05,637 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-24 23:40:05,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:05,638 INFO L85 PathProgramCache]: Analyzing trace with hash 59469031, now seen corresponding path program 1 times [2024-10-24 23:40:05,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:05,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803297704] [2024-10-24 23:40:05,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:05,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:05,705 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:40:05,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:05,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803297704] [2024-10-24 23:40:05,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803297704] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:05,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486223334] [2024-10-24 23:40:05,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:05,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:05,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:05,707 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:05,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 23:40:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:05,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:40:05,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:40:05,819 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:40:05,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486223334] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:05,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:05,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-24 23:40:05,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431039813] [2024-10-24 23:40:05,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:05,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:40:05,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:05,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:40:05,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:40:05,874 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-10-24 23:40:05,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 249 flow. Second operand has 12 states, 12 states have (on average 22.166666666666668) internal successors, (266), 12 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:05,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:05,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-10-24 23:40:05,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:06,443 INFO L124 PetriNetUnfolderBase]: 3883/6505 cut-off events. [2024-10-24 23:40:06,443 INFO L125 PetriNetUnfolderBase]: For 6919/7156 co-relation queries the response was YES. [2024-10-24 23:40:06,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17048 conditions, 6505 events. 3883/6505 cut-off events. For 6919/7156 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 41701 event pairs, 1191 based on Foata normal form. 246/6602 useless extension candidates. Maximal degree in co-relation 13596. Up to 2419 conditions per place. [2024-10-24 23:40:06,475 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 183 selfloop transitions, 13 changer transitions 0/214 dead transitions. [2024-10-24 23:40:06,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 214 transitions, 1368 flow [2024-10-24 23:40:06,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:40:06,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:40:06,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 314 transitions. [2024-10-24 23:40:06,477 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6680851063829787 [2024-10-24 23:40:06,477 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 249 flow. Second operand 10 states and 314 transitions. [2024-10-24 23:40:06,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 214 transitions, 1368 flow [2024-10-24 23:40:06,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 214 transitions, 1293 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-10-24 23:40:06,483 INFO L231 Difference]: Finished difference. Result has 85 places, 74 transitions, 321 flow [2024-10-24 23:40:06,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=321, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2024-10-24 23:40:06,483 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 37 predicate places. [2024-10-24 23:40:06,483 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 321 flow [2024-10-24 23:40:06,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.166666666666668) internal successors, (266), 12 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:06,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:06,484 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:06,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 23:40:06,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:06,689 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-24 23:40:06,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:06,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1259605956, now seen corresponding path program 2 times [2024-10-24 23:40:06,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:06,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262208570] [2024-10-24 23:40:06,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:06,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:06,835 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-24 23:40:06,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:06,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262208570] [2024-10-24 23:40:06,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262208570] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:06,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362010453] [2024-10-24 23:40:06,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:40:06,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:06,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:06,837 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:06,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 23:40:06,912 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:40:06,912 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:40:06,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:40:06,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:06,974 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-24 23:40:06,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-24 23:40:07,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362010453] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:07,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:07,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2024-10-24 23:40:07,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656466660] [2024-10-24 23:40:07,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:07,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 23:40:07,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:07,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 23:40:07,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-10-24 23:40:07,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:40:07,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 321 flow. Second operand has 13 states, 13 states have (on average 19.46153846153846) internal successors, (253), 13 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:07,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:07,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:40:07,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:08,345 INFO L124 PetriNetUnfolderBase]: 8972/13978 cut-off events. [2024-10-24 23:40:08,346 INFO L125 PetriNetUnfolderBase]: For 18917/19422 co-relation queries the response was YES. [2024-10-24 23:40:08,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40138 conditions, 13978 events. 8972/13978 cut-off events. For 18917/19422 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 94133 event pairs, 1473 based on Foata normal form. 160/13870 useless extension candidates. Maximal degree in co-relation 31862. Up to 2816 conditions per place. [2024-10-24 23:40:08,407 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 142 selfloop transitions, 38 changer transitions 45/242 dead transitions. [2024-10-24 23:40:08,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 242 transitions, 1581 flow [2024-10-24 23:40:08,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 23:40:08,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-24 23:40:08,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 402 transitions. [2024-10-24 23:40:08,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-10-24 23:40:08,409 INFO L175 Difference]: Start difference. First operand has 85 places, 74 transitions, 321 flow. Second operand 16 states and 402 transitions. [2024-10-24 23:40:08,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 242 transitions, 1581 flow [2024-10-24 23:40:08,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 242 transitions, 1486 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-10-24 23:40:08,431 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 459 flow [2024-10-24 23:40:08,431 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=459, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2024-10-24 23:40:08,432 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 47 predicate places. [2024-10-24 23:40:08,432 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 459 flow [2024-10-24 23:40:08,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.46153846153846) internal successors, (253), 13 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:08,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:08,432 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:08,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-24 23:40:08,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-24 23:40:08,636 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-24 23:40:08,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:08,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1668037389, now seen corresponding path program 2 times [2024-10-24 23:40:08,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:08,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352859603] [2024-10-24 23:40:08,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:08,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:08,898 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-24 23:40:08,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:08,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352859603] [2024-10-24 23:40:08,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352859603] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:08,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374892010] [2024-10-24 23:40:08,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:40:08,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:08,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:08,904 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:08,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 23:40:08,985 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:40:08,985 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:40:08,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:40:08,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:09,049 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-24 23:40:09,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-24 23:40:09,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374892010] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:09,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:09,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2024-10-24 23:40:09,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252744798] [2024-10-24 23:40:09,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:09,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 23:40:09,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:09,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 23:40:09,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-10-24 23:40:09,174 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:40:09,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 459 flow. Second operand has 13 states, 13 states have (on average 19.76923076923077) internal successors, (257), 13 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:09,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:09,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:40:09,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:10,292 INFO L124 PetriNetUnfolderBase]: 7989/12693 cut-off events. [2024-10-24 23:40:10,292 INFO L125 PetriNetUnfolderBase]: For 27515/28305 co-relation queries the response was YES. [2024-10-24 23:40:10,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37235 conditions, 12693 events. 7989/12693 cut-off events. For 27515/28305 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 87115 event pairs, 978 based on Foata normal form. 560/13125 useless extension candidates. Maximal degree in co-relation 27748. Up to 2882 conditions per place. [2024-10-24 23:40:10,318 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 0 selfloop transitions, 0 changer transitions 232/232 dead transitions. [2024-10-24 23:40:10,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 232 transitions, 1660 flow [2024-10-24 23:40:10,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 23:40:10,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-24 23:40:10,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 390 transitions. [2024-10-24 23:40:10,320 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-10-24 23:40:10,320 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 459 flow. Second operand 16 states and 390 transitions. [2024-10-24 23:40:10,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 232 transitions, 1660 flow [2024-10-24 23:40:10,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 232 transitions, 1628 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-10-24 23:40:10,343 INFO L231 Difference]: Finished difference. Result has 97 places, 0 transitions, 0 flow [2024-10-24 23:40:10,343 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=97, PETRI_TRANSITIONS=0} [2024-10-24 23:40:10,343 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 49 predicate places. [2024-10-24 23:40:10,344 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 0 transitions, 0 flow [2024-10-24 23:40:10,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.76923076923077) internal successors, (257), 13 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:10,346 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2024-10-24 23:40:10,346 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-10-24 23:40:10,346 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-10-24 23:40:10,346 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-10-24 23:40:10,346 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-10-24 23:40:10,346 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-10-24 23:40:10,347 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2024-10-24 23:40:10,347 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2024-10-24 23:40:10,347 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2024-10-24 23:40:10,347 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-10-24 23:40:10,347 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-10-24 23:40:10,347 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-10-24 23:40:10,347 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-10-24 23:40:10,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 23:40:10,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-24 23:40:10,548 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:10,553 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-24 23:40:10,554 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 23:40:10,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:40:10 BasicIcfg [2024-10-24 23:40:10,558 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 23:40:10,559 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 23:40:10,559 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 23:40:10,559 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 23:40:10,559 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:39:58" (3/4) ... [2024-10-24 23:40:10,560 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 23:40:10,562 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-24 23:40:10,562 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-24 23:40:10,562 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-10-24 23:40:10,569 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 120 nodes and edges [2024-10-24 23:40:10,569 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2024-10-24 23:40:10,570 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-10-24 23:40:10,570 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-24 23:40:10,644 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 23:40:10,645 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 23:40:10,645 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 23:40:10,645 INFO L158 Benchmark]: Toolchain (without parser) took 13337.68ms. Allocated memory was 228.6MB in the beginning and 669.0MB in the end (delta: 440.4MB). Free memory was 160.6MB in the beginning and 346.3MB in the end (delta: -185.7MB). Peak memory consumption was 257.3MB. Max. memory is 16.1GB. [2024-10-24 23:40:10,645 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 123.7MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:40:10,646 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.18ms. Allocated memory is still 228.6MB. Free memory was 160.3MB in the beginning and 146.2MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-24 23:40:10,646 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.90ms. Allocated memory is still 228.6MB. Free memory was 146.2MB in the beginning and 144.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 23:40:10,646 INFO L158 Benchmark]: Boogie Preprocessor took 39.46ms. Allocated memory is still 228.6MB. Free memory was 144.3MB in the beginning and 141.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 23:40:10,646 INFO L158 Benchmark]: RCFGBuilder took 886.82ms. Allocated memory is still 228.6MB. Free memory was 141.8MB in the beginning and 162.5MB in the end (delta: -20.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-24 23:40:10,646 INFO L158 Benchmark]: TraceAbstraction took 11991.63ms. Allocated memory was 228.6MB in the beginning and 669.0MB in the end (delta: 440.4MB). Free memory was 161.6MB in the beginning and 352.1MB in the end (delta: -190.5MB). Peak memory consumption was 405.4MB. Max. memory is 16.1GB. [2024-10-24 23:40:10,647 INFO L158 Benchmark]: Witness Printer took 86.08ms. Allocated memory is still 669.0MB. Free memory was 352.1MB in the beginning and 346.3MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-24 23:40:10,648 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 123.7MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.18ms. Allocated memory is still 228.6MB. Free memory was 160.3MB in the beginning and 146.2MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.90ms. Allocated memory is still 228.6MB. Free memory was 146.2MB in the beginning and 144.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.46ms. Allocated memory is still 228.6MB. Free memory was 144.3MB in the beginning and 141.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 886.82ms. Allocated memory is still 228.6MB. Free memory was 141.8MB in the beginning and 162.5MB in the end (delta: -20.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 11991.63ms. Allocated memory was 228.6MB in the beginning and 669.0MB in the end (delta: 440.4MB). Free memory was 161.6MB in the beginning and 352.1MB in the end (delta: -190.5MB). Peak memory consumption was 405.4MB. Max. memory is 16.1GB. * Witness Printer took 86.08ms. Allocated memory is still 669.0MB. Free memory was 352.1MB in the beginning and 346.3MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 76 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.9s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1186 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1126 mSDsluCounter, 881 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 872 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4350 IncrementalHoareTripleChecker+Invalid, 4404 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 9 mSDtfsCounter, 4350 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 493 GetRequests, 313 SyntacticMatches, 7 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=459occurred in iteration=12, InterpolantAutomatonStates: 125, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 433 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 592 ConstructedInterpolants, 0 QuantifiedInterpolants, 1707 SizeOfPredicates, 29 NumberOfNonLiveVariables, 979 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 30 InterpolantComputations, 5 PerfectInterpolantSequences, 322/527 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-24 23:40:10,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE