./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i -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 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:05:56,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:05:56,520 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:05:56,524 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:05:56,524 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:05:56,578 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:05:56,579 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:05:56,579 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:05:56,580 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:05:56,580 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:05:56,581 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:05:56,581 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:05:56,581 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:05:56,582 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:05:56,582 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:05:56,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:05:56,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:05:56,583 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:05:56,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:05:56,583 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:05:56,584 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:05:56,584 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:05:56,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:05:56,585 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:05:56,585 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:05:56,585 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:05:56,585 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:05:56,586 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:05:56,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:05:56,586 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:05:56,586 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:05:56,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:05:56,587 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:05:56,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:05:56,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:05:56,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:05:56,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:05:56,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:05:56,588 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:05:56,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:05:56,589 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:05:56,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:05:56,591 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:05:56,592 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:05:56,592 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 [2024-11-09 15:05:56,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:05:56,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:05:56,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:05:56,831 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:05:56,831 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:05:56,832 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2024-11-09 15:05:58,097 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:05:58,318 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:05:58,318 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2024-11-09 15:05:58,333 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26aa3bc1a/83ffa9bb438e4d77b6cc237ea5c8ad78/FLAGa2234e07b [2024-11-09 15:05:58,345 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26aa3bc1a/83ffa9bb438e4d77b6cc237ea5c8ad78 [2024-11-09 15:05:58,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:05:58,349 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:05:58,351 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:05:58,351 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:05:58,355 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:05:58,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:05:58" (1/1) ... [2024-11-09 15:05:58,356 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@232064ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:58, skipping insertion in model container [2024-11-09 15:05:58,356 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:05:58" (1/1) ... [2024-11-09 15:05:58,390 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:05:58,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:05:58,836 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:05:58,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:05:58,927 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:05:58,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:58 WrapperNode [2024-11-09 15:05:58,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:05:58,928 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:05:58,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:05:58,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:05:58,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:58" (1/1) ... [2024-11-09 15:05:58,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:58" (1/1) ... [2024-11-09 15:05:58,978 INFO L138 Inliner]: procedures = 272, calls = 110, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 372 [2024-11-09 15:05:58,979 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:05:58,982 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:05:58,983 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:05:58,983 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:05:58,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:58" (1/1) ... [2024-11-09 15:05:58,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:58" (1/1) ... [2024-11-09 15:05:58,998 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:58" (1/1) ... [2024-11-09 15:05:59,023 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 5, 2, 75]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 0, 60]. The 7 writes are split as follows [0, 0, 1, 6]. [2024-11-09 15:05:59,026 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:58" (1/1) ... [2024-11-09 15:05:59,026 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:58" (1/1) ... [2024-11-09 15:05:59,034 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:58" (1/1) ... [2024-11-09 15:05:59,038 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:58" (1/1) ... [2024-11-09 15:05:59,040 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:58" (1/1) ... [2024-11-09 15:05:59,041 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:58" (1/1) ... [2024-11-09 15:05:59,043 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:05:59,048 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:05:59,048 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:05:59,048 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:05:59,049 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:58" (1/1) ... [2024-11-09 15:05:59,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:05:59,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:05:59,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 15:05:59,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 15:05:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 15:05:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 15:05:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 15:05:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:05:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:05:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 15:05:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 15:05:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:05:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:05:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 15:05:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 15:05:59,125 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 15:05:59,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:05:59,125 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-09 15:05:59,125 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-09 15:05:59,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:05:59,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:05:59,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 15:05:59,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 15:05:59,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:05:59,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:05:59,127 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:05:59,259 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:05:59,260 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:05:59,570 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:05:59,570 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:05:59,924 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:05:59,924 INFO L316 CfgBuilder]: Removed 35 assume(true) statements. [2024-11-09 15:05:59,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:05:59 BoogieIcfgContainer [2024-11-09 15:05:59,925 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:05:59,928 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:05:59,928 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:05:59,931 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:05:59,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:05:58" (1/3) ... [2024-11-09 15:05:59,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c25e2a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:05:59, skipping insertion in model container [2024-11-09 15:05:59,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:58" (2/3) ... [2024-11-09 15:05:59,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c25e2a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:05:59, skipping insertion in model container [2024-11-09 15:05:59,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:05:59" (3/3) ... [2024-11-09 15:05:59,934 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2024-11-09 15:05:59,948 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:05:59,948 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-11-09 15:05:59,948 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:05:59,992 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-09 15:06:00,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 166 transitions, 339 flow [2024-11-09 15:06:00,093 INFO L124 PetriNetUnfolderBase]: 60/262 cut-off events. [2024-11-09 15:06:00,094 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 15:06:00,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 262 events. 60/262 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1294 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 151. Up to 8 conditions per place. [2024-11-09 15:06:00,105 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 166 transitions, 339 flow [2024-11-09 15:06:00,111 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 165 transitions, 337 flow [2024-11-09 15:06:00,119 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:06:00,126 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;@2d55f52e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:06:00,126 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-09 15:06:00,128 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:06:00,129 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:06:00,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:06:00,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:00,130 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:06:00,130 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-09 15:06:00,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:00,135 INFO L85 PathProgramCache]: Analyzing trace with hash 945102, now seen corresponding path program 1 times [2024-11-09 15:06:00,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:00,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651201916] [2024-11-09 15:06:00,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:00,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:00,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:00,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:00,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651201916] [2024-11-09 15:06:00,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651201916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:00,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:00,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:06:00,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899928103] [2024-11-09 15:06:00,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:00,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:06:00,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:00,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:06:00,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:06:00,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-11-09 15:06:00,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 165 transitions, 337 flow. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:00,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:00,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-11-09 15:06:00,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:00,828 INFO L124 PetriNetUnfolderBase]: 971/3020 cut-off events. [2024-11-09 15:06:00,828 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 15:06:00,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4877 conditions, 3020 events. 971/3020 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24618 event pairs, 820 based on Foata normal form. 535/3140 useless extension candidates. Maximal degree in co-relation 4727. Up to 1850 conditions per place. [2024-11-09 15:06:00,846 INFO L140 encePairwiseOnDemand]: 130/166 looper letters, 70 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2024-11-09 15:06:00,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 137 transitions, 427 flow [2024-11-09 15:06:00,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:06:00,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:06:00,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 362 transitions. [2024-11-09 15:06:00,859 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5451807228915663 [2024-11-09 15:06:00,860 INFO L175 Difference]: Start difference. First operand has 132 places, 165 transitions, 337 flow. Second operand 4 states and 362 transitions. [2024-11-09 15:06:00,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 137 transitions, 427 flow [2024-11-09 15:06:00,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 137 transitions, 427 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:06:00,868 INFO L231 Difference]: Finished difference. Result has 137 places, 137 transitions, 301 flow [2024-11-09 15:06:00,869 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=137, PETRI_TRANSITIONS=137} [2024-11-09 15:06:00,873 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 5 predicate places. [2024-11-09 15:06:00,873 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 137 transitions, 301 flow [2024-11-09 15:06:00,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:00,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:00,874 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:06:00,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:06:00,874 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-09 15:06:00,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:00,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1908195227, now seen corresponding path program 1 times [2024-11-09 15:06:00,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:00,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706052889] [2024-11-09 15:06:00,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:00,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:01,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:01,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:01,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706052889] [2024-11-09 15:06:01,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706052889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:01,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686721098] [2024-11-09 15:06:01,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:01,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:01,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:01,018 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:06:01,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:06:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:01,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:06:01,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:01,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:01,186 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:06:01,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686721098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:01,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:06:01,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:06:01,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649541617] [2024-11-09 15:06:01,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:01,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:06:01,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:01,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:06:01,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:06:01,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-11-09 15:06:01,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 137 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 64.83333333333333) internal successors, (389), 6 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:01,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:01,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-11-09 15:06:01,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:01,585 INFO L124 PetriNetUnfolderBase]: 971/3019 cut-off events. [2024-11-09 15:06:01,585 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 15:06:01,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4887 conditions, 3019 events. 971/3019 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24617 event pairs, 820 based on Foata normal form. 1/2605 useless extension candidates. Maximal degree in co-relation 4869. Up to 1845 conditions per place. [2024-11-09 15:06:01,599 INFO L140 encePairwiseOnDemand]: 161/166 looper letters, 66 selfloop transitions, 6 changer transitions 0/136 dead transitions. [2024-11-09 15:06:01,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 136 transitions, 441 flow [2024-11-09 15:06:01,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:06:01,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:06:01,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 457 transitions. [2024-11-09 15:06:01,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45883534136546184 [2024-11-09 15:06:01,604 INFO L175 Difference]: Start difference. First operand has 137 places, 137 transitions, 301 flow. Second operand 6 states and 457 transitions. [2024-11-09 15:06:01,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 136 transitions, 441 flow [2024-11-09 15:06:01,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 136 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:06:01,608 INFO L231 Difference]: Finished difference. Result has 140 places, 136 transitions, 307 flow [2024-11-09 15:06:01,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=140, PETRI_TRANSITIONS=136} [2024-11-09 15:06:01,609 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 8 predicate places. [2024-11-09 15:06:01,610 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 136 transitions, 307 flow [2024-11-09 15:06:01,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.83333333333333) internal successors, (389), 6 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:01,611 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:01,611 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:06:01,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 15:06:01,815 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 [2024-11-09 15:06:01,816 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-09 15:06:01,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:01,816 INFO L85 PathProgramCache]: Analyzing trace with hash 975491157, now seen corresponding path program 1 times [2024-11-09 15:06:01,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:01,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267143536] [2024-11-09 15:06:01,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:01,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:06:01,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:01,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267143536] [2024-11-09 15:06:01,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267143536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:01,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:01,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:06:01,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742086834] [2024-11-09 15:06:01,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:01,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:06:01,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:01,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:06:01,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:06:01,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-11-09 15:06:01,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 136 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:01,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:01,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-11-09 15:06:01,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:02,107 INFO L124 PetriNetUnfolderBase]: 971/3018 cut-off events. [2024-11-09 15:06:02,108 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-09 15:06:02,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4889 conditions, 3018 events. 971/3018 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24572 event pairs, 820 based on Foata normal form. 1/2605 useless extension candidates. Maximal degree in co-relation 4865. Up to 1848 conditions per place. [2024-11-09 15:06:02,118 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 67 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2024-11-09 15:06:02,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 135 transitions, 445 flow [2024-11-09 15:06:02,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:06:02,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:06:02,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2024-11-09 15:06:02,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5261044176706827 [2024-11-09 15:06:02,119 INFO L175 Difference]: Start difference. First operand has 140 places, 136 transitions, 307 flow. Second operand 3 states and 262 transitions. [2024-11-09 15:06:02,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 135 transitions, 445 flow [2024-11-09 15:06:02,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 135 transitions, 423 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-09 15:06:02,122 INFO L231 Difference]: Finished difference. Result has 135 places, 135 transitions, 289 flow [2024-11-09 15:06:02,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=135, PETRI_TRANSITIONS=135} [2024-11-09 15:06:02,127 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 3 predicate places. [2024-11-09 15:06:02,127 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 135 transitions, 289 flow [2024-11-09 15:06:02,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:02,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:02,131 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:02,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 15:06:02,131 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-09 15:06:02,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:02,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1141375690, now seen corresponding path program 1 times [2024-11-09 15:06:02,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:02,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172601570] [2024-11-09 15:06:02,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:02,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:02,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:02,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172601570] [2024-11-09 15:06:02,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172601570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:02,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454304574] [2024-11-09 15:06:02,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:02,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:02,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:02,215 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:06:02,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:06:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:02,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:06:02,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:02,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:02,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:06:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:02,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454304574] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:06:02,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:06:02,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-09 15:06:02,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538523027] [2024-11-09 15:06:02,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:06:02,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:06:02,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:02,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:06:02,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:06:02,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-11-09 15:06:02,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 135 transitions, 289 flow. Second operand has 10 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:02,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:02,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-11-09 15:06:02,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:02,688 INFO L124 PetriNetUnfolderBase]: 971/3022 cut-off events. [2024-11-09 15:06:02,688 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-09 15:06:02,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4892 conditions, 3022 events. 971/3022 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24604 event pairs, 820 based on Foata normal form. 2/2611 useless extension candidates. Maximal degree in co-relation 4858. Up to 1846 conditions per place. [2024-11-09 15:06:02,700 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 67 selfloop transitions, 7 changer transitions 0/138 dead transitions. [2024-11-09 15:06:02,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 138 transitions, 452 flow [2024-11-09 15:06:02,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:06:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:06:02,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 524 transitions. [2024-11-09 15:06:02,702 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4509466437177281 [2024-11-09 15:06:02,702 INFO L175 Difference]: Start difference. First operand has 135 places, 135 transitions, 289 flow. Second operand 7 states and 524 transitions. [2024-11-09 15:06:02,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 138 transitions, 452 flow [2024-11-09 15:06:02,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 138 transitions, 438 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:06:02,706 INFO L231 Difference]: Finished difference. Result has 141 places, 138 transitions, 315 flow [2024-11-09 15:06:02,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=315, PETRI_PLACES=141, PETRI_TRANSITIONS=138} [2024-11-09 15:06:02,707 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 9 predicate places. [2024-11-09 15:06:02,708 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 138 transitions, 315 flow [2024-11-09 15:06:02,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:02,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:02,708 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:02,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 15:06:02,908 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,SelfDestructingSolverStorable3 [2024-11-09 15:06:02,911 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-09 15:06:02,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:02,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1298542442, now seen corresponding path program 2 times [2024-11-09 15:06:02,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:02,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191772369] [2024-11-09 15:06:02,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:02,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:02,985 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:06:02,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:02,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191772369] [2024-11-09 15:06:02,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191772369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:02,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:02,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:06:02,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426031530] [2024-11-09 15:06:02,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:02,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:06:02,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:02,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:06:02,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:06:02,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 166 [2024-11-09 15:06:02,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 138 transitions, 315 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:02,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:02,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 166 [2024-11-09 15:06:02,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:03,225 INFO L124 PetriNetUnfolderBase]: 949/2623 cut-off events. [2024-11-09 15:06:03,226 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 15:06:03,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4466 conditions, 2623 events. 949/2623 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 20300 event pairs, 0 based on Foata normal form. 21/2339 useless extension candidates. Maximal degree in co-relation 4427. Up to 1753 conditions per place. [2024-11-09 15:06:03,235 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 115 selfloop transitions, 3 changer transitions 0/179 dead transitions. [2024-11-09 15:06:03,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 179 transitions, 633 flow [2024-11-09 15:06:03,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:06:03,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:06:03,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 368 transitions. [2024-11-09 15:06:03,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5542168674698795 [2024-11-09 15:06:03,237 INFO L175 Difference]: Start difference. First operand has 141 places, 138 transitions, 315 flow. Second operand 4 states and 368 transitions. [2024-11-09 15:06:03,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 179 transitions, 633 flow [2024-11-09 15:06:03,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 179 transitions, 629 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:06:03,239 INFO L231 Difference]: Finished difference. Result has 141 places, 136 transitions, 317 flow [2024-11-09 15:06:03,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=317, PETRI_PLACES=141, PETRI_TRANSITIONS=136} [2024-11-09 15:06:03,240 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 9 predicate places. [2024-11-09 15:06:03,240 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 136 transitions, 317 flow [2024-11-09 15:06:03,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:03,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:03,241 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:03,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:06:03,241 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-09 15:06:03,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:03,242 INFO L85 PathProgramCache]: Analyzing trace with hash 108466708, now seen corresponding path program 1 times [2024-11-09 15:06:03,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:03,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241080724] [2024-11-09 15:06:03,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:03,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:03,321 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:06:03,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:03,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241080724] [2024-11-09 15:06:03,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241080724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:03,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276333355] [2024-11-09 15:06:03,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:03,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:03,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:03,328 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:06:03,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:06:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:03,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 15:06:03,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:03,444 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:06:03,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:06:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:06:03,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276333355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:06:03,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:06:03,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-09 15:06:03,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851527657] [2024-11-09 15:06:03,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:06:03,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 15:06:03,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:03,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 15:06:03,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-09 15:06:03,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-11-09 15:06:03,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 136 transitions, 317 flow. Second operand has 18 states, 18 states have (on average 65.22222222222223) internal successors, (1174), 18 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:03,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:03,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-11-09 15:06:03,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:03,921 INFO L124 PetriNetUnfolderBase]: 968/2905 cut-off events. [2024-11-09 15:06:03,921 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-09 15:06:03,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4815 conditions, 2905 events. 968/2905 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23119 event pairs, 820 based on Foata normal form. 4/2539 useless extension candidates. Maximal degree in co-relation 4740. Up to 1810 conditions per place. [2024-11-09 15:06:03,933 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 67 selfloop transitions, 15 changer transitions 0/144 dead transitions. [2024-11-09 15:06:03,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 144 transitions, 529 flow [2024-11-09 15:06:03,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 15:06:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 15:06:03,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1046 transitions. [2024-11-09 15:06:03,935 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42008032128514056 [2024-11-09 15:06:03,935 INFO L175 Difference]: Start difference. First operand has 141 places, 136 transitions, 317 flow. Second operand 15 states and 1046 transitions. [2024-11-09 15:06:03,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 144 transitions, 529 flow [2024-11-09 15:06:03,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 144 transitions, 523 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:06:03,938 INFO L231 Difference]: Finished difference. Result has 156 places, 144 transitions, 408 flow [2024-11-09 15:06:03,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=408, PETRI_PLACES=156, PETRI_TRANSITIONS=144} [2024-11-09 15:06:03,939 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 24 predicate places. [2024-11-09 15:06:03,939 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 144 transitions, 408 flow [2024-11-09 15:06:03,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 65.22222222222223) internal successors, (1174), 18 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:03,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:03,940 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:03,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:06:04,141 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 [2024-11-09 15:06:04,142 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-09 15:06:04,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:04,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1348475092, now seen corresponding path program 2 times [2024-11-09 15:06:04,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:04,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166461029] [2024-11-09 15:06:04,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:04,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:06:04,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:04,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166461029] [2024-11-09 15:06:04,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166461029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:04,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436334104] [2024-11-09 15:06:04,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:06:04,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:04,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:04,372 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:06:04,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:06:04,472 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 15:06:04,473 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:06:04,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 15:06:04,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:04,529 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:06:04,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:06:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:06:04,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436334104] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:06:04,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:06:04,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-09 15:06:04,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038813165] [2024-11-09 15:06:04,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:06:04,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 15:06:04,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:04,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 15:06:04,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-09 15:06:04,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-11-09 15:06:04,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 144 transitions, 408 flow. Second operand has 23 states, 23 states have (on average 65.21739130434783) internal successors, (1500), 23 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:04,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:04,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-11-09 15:06:04,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:05,143 INFO L124 PetriNetUnfolderBase]: 968/2938 cut-off events. [2024-11-09 15:06:05,143 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-09 15:06:05,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4878 conditions, 2938 events. 968/2938 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 23392 event pairs, 820 based on Foata normal form. 3/2566 useless extension candidates. Maximal degree in co-relation 4743. Up to 1808 conditions per place. [2024-11-09 15:06:05,155 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 67 selfloop transitions, 21 changer transitions 0/150 dead transitions. [2024-11-09 15:06:05,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 150 transitions, 638 flow [2024-11-09 15:06:05,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 15:06:05,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 15:06:05,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1435 transitions. [2024-11-09 15:06:05,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41164658634538154 [2024-11-09 15:06:05,158 INFO L175 Difference]: Start difference. First operand has 156 places, 144 transitions, 408 flow. Second operand 21 states and 1435 transitions. [2024-11-09 15:06:05,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 150 transitions, 638 flow [2024-11-09 15:06:05,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 150 transitions, 628 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 15:06:05,161 INFO L231 Difference]: Finished difference. Result has 175 places, 150 transitions, 509 flow [2024-11-09 15:06:05,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=509, PETRI_PLACES=175, PETRI_TRANSITIONS=150} [2024-11-09 15:06:05,162 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 43 predicate places. [2024-11-09 15:06:05,162 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 150 transitions, 509 flow [2024-11-09 15:06:05,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 65.21739130434783) internal successors, (1500), 23 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:05,163 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:05,163 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:05,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 15:06:05,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:05,364 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-09 15:06:05,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:05,364 INFO L85 PathProgramCache]: Analyzing trace with hash -505648515, now seen corresponding path program 3 times [2024-11-09 15:06:05,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:05,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133788870] [2024-11-09 15:06:05,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:05,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:06:05,394 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:06:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:06:05,459 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:06:05,459 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 15:06:05,460 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-11-09 15:06:05,461 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2024-11-09 15:06:05,461 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2024-11-09 15:06:05,461 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2024-11-09 15:06:05,461 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2024-11-09 15:06:05,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2024-11-09 15:06:05,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2024-11-09 15:06:05,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2024-11-09 15:06:05,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2024-11-09 15:06:05,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2024-11-09 15:06:05,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2024-11-09 15:06:05,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2024-11-09 15:06:05,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2024-11-09 15:06:05,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2024-11-09 15:06:05,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2024-11-09 15:06:05,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2024-11-09 15:06:05,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2024-11-09 15:06:05,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2024-11-09 15:06:05,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2024-11-09 15:06:05,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2024-11-09 15:06:05,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2024-11-09 15:06:05,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2024-11-09 15:06:05,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2024-11-09 15:06:05,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2024-11-09 15:06:05,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2024-11-09 15:06:05,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2024-11-09 15:06:05,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2024-11-09 15:06:05,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2024-11-09 15:06:05,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2024-11-09 15:06:05,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 15:06:05,468 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2024-11-09 15:06:05,474 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 15:06:05,474 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 15:06:05,515 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 15:06:05,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 218 transitions, 452 flow [2024-11-09 15:06:05,562 INFO L124 PetriNetUnfolderBase]: 97/429 cut-off events. [2024-11-09 15:06:05,563 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 15:06:05,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 429 events. 97/429 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2400 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 264. Up to 12 conditions per place. [2024-11-09 15:06:05,569 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 218 transitions, 452 flow [2024-11-09 15:06:05,572 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 218 transitions, 452 flow [2024-11-09 15:06:05,576 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:06:05,577 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;@2d55f52e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:06:05,577 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-11-09 15:06:05,578 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:06:05,578 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:06:05,579 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:06:05,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:05,579 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:06:05,579 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-09 15:06:05,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:05,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1161576, now seen corresponding path program 1 times [2024-11-09 15:06:05,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:05,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378300928] [2024-11-09 15:06:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:05,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:05,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:05,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:05,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378300928] [2024-11-09 15:06:05,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378300928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:05,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:05,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:06:05,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846452497] [2024-11-09 15:06:05,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:05,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:06:05,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:05,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:06:05,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:06:05,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2024-11-09 15:06:05,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 218 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:05,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:05,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2024-11-09 15:06:05,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:11,639 INFO L124 PetriNetUnfolderBase]: 40815/88548 cut-off events. [2024-11-09 15:06:11,639 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-11-09 15:06:11,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148123 conditions, 88548 events. 40815/88548 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 2483. Compared 1023249 event pairs, 35780 based on Foata normal form. 17425/94055 useless extension candidates. Maximal degree in co-relation 110414. Up to 59461 conditions per place. [2024-11-09 15:06:12,128 INFO L140 encePairwiseOnDemand]: 172/218 looper letters, 94 selfloop transitions, 3 changer transitions 0/180 dead transitions. [2024-11-09 15:06:12,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 180 transitions, 570 flow [2024-11-09 15:06:12,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:06:12,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:06:12,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 472 transitions. [2024-11-09 15:06:12,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5412844036697247 [2024-11-09 15:06:12,132 INFO L175 Difference]: Start difference. First operand has 173 places, 218 transitions, 452 flow. Second operand 4 states and 472 transitions. [2024-11-09 15:06:12,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 180 transitions, 570 flow [2024-11-09 15:06:12,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 180 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:06:12,136 INFO L231 Difference]: Finished difference. Result has 178 places, 180 transitions, 396 flow [2024-11-09 15:06:12,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=396, PETRI_PLACES=178, PETRI_TRANSITIONS=180} [2024-11-09 15:06:12,138 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 5 predicate places. [2024-11-09 15:06:12,138 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 180 transitions, 396 flow [2024-11-09 15:06:12,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:12,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:12,139 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:06:12,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 15:06:12,139 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-09 15:06:12,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:12,140 INFO L85 PathProgramCache]: Analyzing trace with hash 246030885, now seen corresponding path program 1 times [2024-11-09 15:06:12,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:12,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303972246] [2024-11-09 15:06:12,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:12,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:12,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:12,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:12,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303972246] [2024-11-09 15:06:12,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303972246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:12,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574980609] [2024-11-09 15:06:12,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:12,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:12,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:12,201 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:06:12,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:06:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:12,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:06:12,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:12,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:12,309 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:06:12,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574980609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:12,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:06:12,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:06:12,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611472025] [2024-11-09 15:06:12,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:12,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:06:12,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:12,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:06:12,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:06:12,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2024-11-09 15:06:12,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 180 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:12,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:12,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2024-11-09 15:06:12,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:17,948 INFO L124 PetriNetUnfolderBase]: 40815/88547 cut-off events. [2024-11-09 15:06:17,949 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-09 15:06:18,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148133 conditions, 88547 events. 40815/88547 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 2483. Compared 1023339 event pairs, 35780 based on Foata normal form. 1/76630 useless extension candidates. Maximal degree in co-relation 148114. Up to 59456 conditions per place. [2024-11-09 15:06:18,489 INFO L140 encePairwiseOnDemand]: 213/218 looper letters, 90 selfloop transitions, 6 changer transitions 0/179 dead transitions. [2024-11-09 15:06:18,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 179 transitions, 584 flow [2024-11-09 15:06:18,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:06:18,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:06:18,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 595 transitions. [2024-11-09 15:06:18,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45489296636085624 [2024-11-09 15:06:18,491 INFO L175 Difference]: Start difference. First operand has 178 places, 180 transitions, 396 flow. Second operand 6 states and 595 transitions. [2024-11-09 15:06:18,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 179 transitions, 584 flow [2024-11-09 15:06:18,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 179 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:06:18,498 INFO L231 Difference]: Finished difference. Result has 181 places, 179 transitions, 402 flow [2024-11-09 15:06:18,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=402, PETRI_PLACES=181, PETRI_TRANSITIONS=179} [2024-11-09 15:06:18,499 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 8 predicate places. [2024-11-09 15:06:18,499 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 179 transitions, 402 flow [2024-11-09 15:06:18,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:18,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:18,500 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:06:18,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 15:06:18,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 15:06:18,701 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-09 15:06:18,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:18,702 INFO L85 PathProgramCache]: Analyzing trace with hash -962975889, now seen corresponding path program 1 times [2024-11-09 15:06:18,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:18,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442230751] [2024-11-09 15:06:18,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:18,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:18,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:06:18,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:18,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442230751] [2024-11-09 15:06:18,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442230751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:18,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:18,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:06:18,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381064542] [2024-11-09 15:06:18,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:18,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:06:18,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:18,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:06:18,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:06:18,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2024-11-09 15:06:18,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 179 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:18,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:18,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2024-11-09 15:06:18,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:24,653 INFO L124 PetriNetUnfolderBase]: 40815/88546 cut-off events. [2024-11-09 15:06:24,654 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2024-11-09 15:06:24,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148135 conditions, 88546 events. 40815/88546 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 2479. Compared 1023303 event pairs, 35780 based on Foata normal form. 1/76630 useless extension candidates. Maximal degree in co-relation 148110. Up to 59459 conditions per place. [2024-11-09 15:06:25,087 INFO L140 encePairwiseOnDemand]: 215/218 looper letters, 91 selfloop transitions, 4 changer transitions 0/178 dead transitions. [2024-11-09 15:06:25,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 178 transitions, 588 flow [2024-11-09 15:06:25,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:06:25,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:06:25,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2024-11-09 15:06:25,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5244648318042814 [2024-11-09 15:06:25,088 INFO L175 Difference]: Start difference. First operand has 181 places, 179 transitions, 402 flow. Second operand 3 states and 343 transitions. [2024-11-09 15:06:25,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 178 transitions, 588 flow [2024-11-09 15:06:25,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 178 transitions, 566 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-09 15:06:25,091 INFO L231 Difference]: Finished difference. Result has 176 places, 178 transitions, 384 flow [2024-11-09 15:06:25,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=176, PETRI_TRANSITIONS=178} [2024-11-09 15:06:25,092 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 3 predicate places. [2024-11-09 15:06:25,092 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 178 transitions, 384 flow [2024-11-09 15:06:25,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:25,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:25,093 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:25,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 15:06:25,093 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-09 15:06:25,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:25,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2004561322, now seen corresponding path program 1 times [2024-11-09 15:06:25,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:25,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637048259] [2024-11-09 15:06:25,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:25,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:25,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:25,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:25,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637048259] [2024-11-09 15:06:25,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637048259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:25,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276811757] [2024-11-09 15:06:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:25,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:25,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:25,135 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:06:25,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:06:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:25,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:06:25,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:25,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:25,233 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:06:25,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:25,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276811757] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:06:25,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:06:25,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-09 15:06:25,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891374783] [2024-11-09 15:06:25,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:06:25,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:06:25,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:25,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:06:25,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:06:25,271 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2024-11-09 15:06:25,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 178 transitions, 384 flow. Second operand has 10 states, 10 states have (on average 84.3) internal successors, (843), 10 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:25,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:25,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2024-11-09 15:06:25,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:30,963 INFO L124 PetriNetUnfolderBase]: 40815/88550 cut-off events. [2024-11-09 15:06:30,964 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-11-09 15:06:31,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148138 conditions, 88550 events. 40815/88550 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 2479. Compared 1023205 event pairs, 35780 based on Foata normal form. 2/76636 useless extension candidates. Maximal degree in co-relation 148103. Up to 59457 conditions per place. [2024-11-09 15:06:31,373 INFO L140 encePairwiseOnDemand]: 214/218 looper letters, 91 selfloop transitions, 7 changer transitions 0/181 dead transitions. [2024-11-09 15:06:31,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 181 transitions, 595 flow [2024-11-09 15:06:31,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:06:31,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:06:31,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 681 transitions. [2024-11-09 15:06:31,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44626474442988207 [2024-11-09 15:06:31,375 INFO L175 Difference]: Start difference. First operand has 176 places, 178 transitions, 384 flow. Second operand 7 states and 681 transitions. [2024-11-09 15:06:31,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 181 transitions, 595 flow [2024-11-09 15:06:31,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 181 transitions, 581 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:06:31,379 INFO L231 Difference]: Finished difference. Result has 182 places, 181 transitions, 410 flow [2024-11-09 15:06:31,379 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=410, PETRI_PLACES=182, PETRI_TRANSITIONS=181} [2024-11-09 15:06:31,380 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 9 predicate places. [2024-11-09 15:06:31,380 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 181 transitions, 410 flow [2024-11-09 15:06:31,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.3) internal successors, (843), 10 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:31,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:31,380 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:31,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 15:06:31,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:31,582 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-09 15:06:31,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:31,583 INFO L85 PathProgramCache]: Analyzing trace with hash -406973130, now seen corresponding path program 2 times [2024-11-09 15:06:31,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:31,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772604329] [2024-11-09 15:06:31,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:31,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:06:31,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:31,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772604329] [2024-11-09 15:06:31,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772604329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:31,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:31,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:06:31,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155800158] [2024-11-09 15:06:31,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:31,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:06:31,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:31,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:06:31,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:06:31,640 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 218 [2024-11-09 15:06:31,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 181 transitions, 410 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:31,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:31,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 218 [2024-11-09 15:06:31,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:37,615 INFO L124 PetriNetUnfolderBase]: 43605/94478 cut-off events. [2024-11-09 15:06:37,615 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-11-09 15:06:37,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158178 conditions, 94478 events. 43605/94478 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 2583. Compared 1100385 event pairs, 24476 based on Foata normal form. 21/81962 useless extension candidates. Maximal degree in co-relation 158138. Up to 63503 conditions per place. [2024-11-09 15:06:38,057 INFO L140 encePairwiseOnDemand]: 212/218 looper letters, 143 selfloop transitions, 3 changer transitions 0/226 dead transitions. [2024-11-09 15:06:38,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 226 transitions, 792 flow [2024-11-09 15:06:38,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:06:38,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:06:38,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 472 transitions. [2024-11-09 15:06:38,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5412844036697247 [2024-11-09 15:06:38,060 INFO L175 Difference]: Start difference. First operand has 182 places, 181 transitions, 410 flow. Second operand 4 states and 472 transitions. [2024-11-09 15:06:38,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 226 transitions, 792 flow [2024-11-09 15:06:38,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 226 transitions, 788 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:06:38,063 INFO L231 Difference]: Finished difference. Result has 185 places, 183 transitions, 430 flow [2024-11-09 15:06:38,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=430, PETRI_PLACES=185, PETRI_TRANSITIONS=183} [2024-11-09 15:06:38,063 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 12 predicate places. [2024-11-09 15:06:38,064 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 183 transitions, 430 flow [2024-11-09 15:06:38,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:38,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:38,064 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:38,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 15:06:38,064 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-09 15:06:38,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:38,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1219599840, now seen corresponding path program 1 times [2024-11-09 15:06:38,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:38,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117087360] [2024-11-09 15:06:38,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:38,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat