./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_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_71-funloop_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 bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:05:54,723 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:05:54,790 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:05:54,797 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:05:54,798 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:05:54,834 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:05:54,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:05:54,835 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:05:54,835 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:05:54,836 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:05:54,836 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:05:54,836 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:05:54,837 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:05:54,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:05:54,838 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:05:54,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:05:54,839 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:05:54,839 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:05:54,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:05:54,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:05:54,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:05:54,844 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:05:54,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:05:54,845 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:05:54,845 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:05:54,845 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:05:54,846 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:05:54,846 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:05:54,846 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:05:54,846 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:05:54,847 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:05:54,847 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:05:54,847 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:05:54,848 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:05:54,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:05:54,848 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:05:54,848 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:05:54,849 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:05:54,849 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:05:54,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:05:54,849 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:05:54,854 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:05:54,854 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:05:54,854 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:05:54,854 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2024-11-09 15:05:55,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:05:55,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:05:55,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:05:55,149 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:05:55,150 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:05:55,151 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-11-09 15:05:56,648 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:05:56,923 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:05:56,924 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-11-09 15:05:56,940 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b40316e93/bcf7904d6c7b45fe886de86dc4db5e72/FLAG9f6708f33 [2024-11-09 15:05:56,954 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b40316e93/bcf7904d6c7b45fe886de86dc4db5e72 [2024-11-09 15:05:56,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:05:56,958 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:05:56,960 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:05:56,960 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:05:56,965 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:05:56,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:05:56" (1/1) ... [2024-11-09 15:05:56,966 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32d8fbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:56, skipping insertion in model container [2024-11-09 15:05:56,967 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:05:56" (1/1) ... [2024-11-09 15:05:57,015 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:05:57,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:05:57,577 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:05:57,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:05:57,700 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:05:57,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:57 WrapperNode [2024-11-09 15:05:57,701 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:05:57,702 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:05:57,702 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:05:57,702 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:05:57,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:57" (1/1) ... [2024-11-09 15:05:57,737 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:57" (1/1) ... [2024-11-09 15:05:57,784 INFO L138 Inliner]: procedures = 272, calls = 108, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 366 [2024-11-09 15:05:57,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:05:57,787 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:05:57,787 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:05:57,787 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:05:57,798 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:57" (1/1) ... [2024-11-09 15:05:57,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:57" (1/1) ... [2024-11-09 15:05:57,808 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:57" (1/1) ... [2024-11-09 15:05:57,829 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 75, 5, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 60, 5, 0]. The 7 writes are split as follows [0, 6, 0, 1]. [2024-11-09 15:05:57,830 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:57" (1/1) ... [2024-11-09 15:05:57,830 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:57" (1/1) ... [2024-11-09 15:05:57,844 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:57" (1/1) ... [2024-11-09 15:05:57,854 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:57" (1/1) ... [2024-11-09 15:05:57,858 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:57" (1/1) ... [2024-11-09 15:05:57,860 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:57" (1/1) ... [2024-11-09 15:05:57,866 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:05:57,868 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:05:57,868 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:05:57,868 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:05:57,869 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:57" (1/1) ... [2024-11-09 15:05:57,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:05:57,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:05:57,909 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 15:05:57,912 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 15:05:57,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 15:05:57,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 15:05:57,970 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 15:05:57,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:05:57,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:05:57,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 15:05:57,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 15:05:57,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:05:57,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:05:57,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 15:05:57,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 15:05:57,971 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 15:05:57,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:05:57,971 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-09 15:05:57,972 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-09 15:05:57,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:05:57,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:05:57,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 15:05:57,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 15:05:57,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:05:57,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:05:57,974 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 15:05:58,167 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:05:58,170 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:05:58,734 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:05:58,735 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:05:59,179 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:05:59,180 INFO L316 CfgBuilder]: Removed 35 assume(true) statements. [2024-11-09 15:05:59,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:05:59 BoogieIcfgContainer [2024-11-09 15:05:59,180 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:05:59,182 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:05:59,182 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:05:59,187 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:05:59,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:05:56" (1/3) ... [2024-11-09 15:05:59,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215a37df 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 15:05:59,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:05:57" (2/3) ... [2024-11-09 15:05:59,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215a37df 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 15:05:59,189 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 15:05:59,190 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2024-11-09 15:05:59,208 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:05:59,209 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-11-09 15:05:59,209 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:05:59,278 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-09 15:05:59,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 163 transitions, 333 flow [2024-11-09 15:05:59,399 INFO L124 PetriNetUnfolderBase]: 60/256 cut-off events. [2024-11-09 15:05:59,399 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 15:05:59,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 256 events. 60/256 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1281 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 148. Up to 8 conditions per place. [2024-11-09 15:05:59,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 163 transitions, 333 flow [2024-11-09 15:05:59,417 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 162 transitions, 331 flow [2024-11-09 15:05:59,431 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:05:59,438 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;@5aba2605, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:05:59,438 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-09 15:05:59,442 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:05:59,442 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:05:59,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:05:59,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:05:59,443 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:05:59,443 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 15:05:59,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:05:59,449 INFO L85 PathProgramCache]: Analyzing trace with hash 929875, now seen corresponding path program 1 times [2024-11-09 15:05:59,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:05:59,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960726606] [2024-11-09 15:05:59,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:05:59,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:05:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:05:59,804 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 15:05:59,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:05:59,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960726606] [2024-11-09 15:05:59,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960726606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:05:59,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:05:59,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:05:59,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331388376] [2024-11-09 15:05:59,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:05:59,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:05:59,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:05:59,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:05:59,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:05:59,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-11-09 15:05:59,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 162 transitions, 331 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 15:05:59,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:05:59,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-11-09 15:05:59,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:00,447 INFO L124 PetriNetUnfolderBase]: 920/2876 cut-off events. [2024-11-09 15:06:00,448 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 15:06:00,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4618 conditions, 2876 events. 920/2876 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23410 event pairs, 760 based on Foata normal form. 512/2969 useless extension candidates. Maximal degree in co-relation 4474. Up to 1735 conditions per place. [2024-11-09 15:06:00,478 INFO L140 encePairwiseOnDemand]: 127/163 looper letters, 67 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2024-11-09 15:06:00,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 134 transitions, 415 flow [2024-11-09 15:06:00,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:06:00,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:06:00,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 359 transitions. [2024-11-09 15:06:00,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5506134969325154 [2024-11-09 15:06:00,494 INFO L175 Difference]: Start difference. First operand has 129 places, 162 transitions, 331 flow. Second operand 4 states and 359 transitions. [2024-11-09 15:06:00,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 134 transitions, 415 flow [2024-11-09 15:06:00,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 134 transitions, 415 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:06:00,502 INFO L231 Difference]: Finished difference. Result has 134 places, 134 transitions, 295 flow [2024-11-09 15:06:00,504 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=134, PETRI_TRANSITIONS=134} [2024-11-09 15:06:00,508 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 5 predicate places. [2024-11-09 15:06:00,508 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 134 transitions, 295 flow [2024-11-09 15:06:00,508 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 15:06:00,509 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:00,509 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:06:00,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:06:00,509 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 15:06:00,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:00,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1933097572, now seen corresponding path program 1 times [2024-11-09 15:06:00,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:00,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121538790] [2024-11-09 15:06:00,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:00,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:00,665 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 15:06:00,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:00,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121538790] [2024-11-09 15:06:00,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121538790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:00,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663463420] [2024-11-09 15:06:00,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:00,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:00,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:00,669 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 15:06:00,671 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 15:06:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:00,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:06:00,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:00,833 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 15:06:00,834 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:06:00,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663463420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:00,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:06:00,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:06:00,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804679973] [2024-11-09 15:06:00,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:00,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:06:00,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:00,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:06:00,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:06:00,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-11-09 15:06:00,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 134 transitions, 295 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 15:06:00,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:00,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-11-09 15:06:00,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:01,289 INFO L124 PetriNetUnfolderBase]: 920/2875 cut-off events. [2024-11-09 15:06:01,290 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 15:06:01,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4628 conditions, 2875 events. 920/2875 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23420 event pairs, 760 based on Foata normal form. 1/2457 useless extension candidates. Maximal degree in co-relation 4610. Up to 1730 conditions per place. [2024-11-09 15:06:01,309 INFO L140 encePairwiseOnDemand]: 158/163 looper letters, 63 selfloop transitions, 6 changer transitions 0/133 dead transitions. [2024-11-09 15:06:01,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 133 transitions, 429 flow [2024-11-09 15:06:01,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:06:01,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:06:01,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 454 transitions. [2024-11-09 15:06:01,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46421267893660534 [2024-11-09 15:06:01,313 INFO L175 Difference]: Start difference. First operand has 134 places, 134 transitions, 295 flow. Second operand 6 states and 454 transitions. [2024-11-09 15:06:01,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 133 transitions, 429 flow [2024-11-09 15:06:01,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 133 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:06:01,317 INFO L231 Difference]: Finished difference. Result has 137 places, 133 transitions, 301 flow [2024-11-09 15:06:01,317 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=137, PETRI_TRANSITIONS=133} [2024-11-09 15:06:01,318 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 8 predicate places. [2024-11-09 15:06:01,318 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 133 transitions, 301 flow [2024-11-09 15:06:01,319 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 15:06:01,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:01,319 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:06:01,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 15:06:01,519 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 15:06:01,520 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 15:06:01,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:01,521 INFO L85 PathProgramCache]: Analyzing trace with hash -203516408, now seen corresponding path program 1 times [2024-11-09 15:06:01,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:01,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333879776] [2024-11-09 15:06:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:01,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:01,583 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 15:06:01,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:01,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333879776] [2024-11-09 15:06:01,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333879776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:01,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:01,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:06:01,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863027346] [2024-11-09 15:06:01,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:01,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:06:01,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:01,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:06:01,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:06:01,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-11-09 15:06:01,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 133 transitions, 301 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 15:06:01,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:01,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-11-09 15:06:01,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:01,943 INFO L124 PetriNetUnfolderBase]: 920/2874 cut-off events. [2024-11-09 15:06:01,944 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-09 15:06:01,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4630 conditions, 2874 events. 920/2874 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 23381 event pairs, 760 based on Foata normal form. 1/2457 useless extension candidates. Maximal degree in co-relation 4606. Up to 1733 conditions per place. [2024-11-09 15:06:01,962 INFO L140 encePairwiseOnDemand]: 160/163 looper letters, 64 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2024-11-09 15:06:01,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 132 transitions, 433 flow [2024-11-09 15:06:01,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:06:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:06:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2024-11-09 15:06:01,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5296523517382413 [2024-11-09 15:06:01,965 INFO L175 Difference]: Start difference. First operand has 137 places, 133 transitions, 301 flow. Second operand 3 states and 259 transitions. [2024-11-09 15:06:01,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 132 transitions, 433 flow [2024-11-09 15:06:01,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 132 transitions, 411 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-09 15:06:01,969 INFO L231 Difference]: Finished difference. Result has 132 places, 132 transitions, 283 flow [2024-11-09 15:06:01,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=132, PETRI_TRANSITIONS=132} [2024-11-09 15:06:01,970 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 3 predicate places. [2024-11-09 15:06:01,970 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 132 transitions, 283 flow [2024-11-09 15:06:01,971 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 15:06:01,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:01,971 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:01,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 15:06:01,971 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 15:06:01,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:01,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1988465455, now seen corresponding path program 1 times [2024-11-09 15:06:01,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:01,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359787367] [2024-11-09 15:06:01,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:01,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:02,053 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 15:06:02,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:02,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359787367] [2024-11-09 15:06:02,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359787367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:02,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923120007] [2024-11-09 15:06:02,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:02,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:02,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:02,056 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 15:06:02,058 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 15:06:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:02,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:06:02,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:02,171 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 15:06:02,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:06:02,202 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 15:06:02,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923120007] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:06:02,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:06:02,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-09 15:06:02,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784424639] [2024-11-09 15:06:02,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:06:02,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:06:02,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:02,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:06:02,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:06:02,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-11-09 15:06:02,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 132 transitions, 283 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 15:06:02,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:02,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-11-09 15:06:02,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:02,643 INFO L124 PetriNetUnfolderBase]: 920/2878 cut-off events. [2024-11-09 15:06:02,643 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-09 15:06:02,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4633 conditions, 2878 events. 920/2878 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 23395 event pairs, 760 based on Foata normal form. 2/2463 useless extension candidates. Maximal degree in co-relation 4599. Up to 1731 conditions per place. [2024-11-09 15:06:02,663 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 64 selfloop transitions, 7 changer transitions 0/135 dead transitions. [2024-11-09 15:06:02,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 135 transitions, 440 flow [2024-11-09 15:06:02,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:06:02,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:06:02,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 521 transitions. [2024-11-09 15:06:02,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4566170026292726 [2024-11-09 15:06:02,666 INFO L175 Difference]: Start difference. First operand has 132 places, 132 transitions, 283 flow. Second operand 7 states and 521 transitions. [2024-11-09 15:06:02,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 135 transitions, 440 flow [2024-11-09 15:06:02,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 135 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:06:02,670 INFO L231 Difference]: Finished difference. Result has 138 places, 135 transitions, 309 flow [2024-11-09 15:06:02,670 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=138, PETRI_TRANSITIONS=135} [2024-11-09 15:06:02,671 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 9 predicate places. [2024-11-09 15:06:02,671 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 135 transitions, 309 flow [2024-11-09 15:06:02,672 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 15:06:02,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:02,672 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:02,690 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 15:06:02,872 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 15:06:02,873 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 15:06:02,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:02,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1297859983, now seen corresponding path program 2 times [2024-11-09 15:06:02,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:02,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656721827] [2024-11-09 15:06:02,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:02,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:02,943 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 15:06:02,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:02,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656721827] [2024-11-09 15:06:02,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656721827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:02,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:02,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:06:02,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021052570] [2024-11-09 15:06:02,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:02,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:06:02,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:02,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:06:02,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:06:02,953 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 163 [2024-11-09 15:06:02,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 135 transitions, 309 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 15:06:02,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:02,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 163 [2024-11-09 15:06:02,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:03,299 INFO L124 PetriNetUnfolderBase]: 885/2495 cut-off events. [2024-11-09 15:06:03,300 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 15:06:03,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4212 conditions, 2495 events. 885/2495 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 19433 event pairs, 0 based on Foata normal form. 21/2222 useless extension candidates. Maximal degree in co-relation 4173. Up to 1627 conditions per place. [2024-11-09 15:06:03,314 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 112 selfloop transitions, 3 changer transitions 0/176 dead transitions. [2024-11-09 15:06:03,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 176 transitions, 621 flow [2024-11-09 15:06:03,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:06:03,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:06:03,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2024-11-09 15:06:03,316 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5598159509202454 [2024-11-09 15:06:03,316 INFO L175 Difference]: Start difference. First operand has 138 places, 135 transitions, 309 flow. Second operand 4 states and 365 transitions. [2024-11-09 15:06:03,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 176 transitions, 621 flow [2024-11-09 15:06:03,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 176 transitions, 617 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:06:03,321 INFO L231 Difference]: Finished difference. Result has 138 places, 133 transitions, 311 flow [2024-11-09 15:06:03,321 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=311, PETRI_PLACES=138, PETRI_TRANSITIONS=133} [2024-11-09 15:06:03,322 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 9 predicate places. [2024-11-09 15:06:03,322 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 133 transitions, 311 flow [2024-11-09 15:06:03,322 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 15:06:03,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:03,323 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:03,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:06:03,323 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 15:06:03,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:03,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1252195870, now seen corresponding path program 1 times [2024-11-09 15:06:03,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:03,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454747050] [2024-11-09 15:06:03,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:03,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:03,463 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 15:06:03,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:03,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454747050] [2024-11-09 15:06:03,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454747050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:03,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505196198] [2024-11-09 15:06:03,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:03,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:03,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:03,466 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 15:06:03,468 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 15:06:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:03,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 15:06:03,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:03,595 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 15:06:03,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:06:03,683 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 15:06:03,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505196198] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:06:03,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:06:03,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-09 15:06:03,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955253330] [2024-11-09 15:06:03,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:06:03,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 15:06:03,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:03,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 15:06:03,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-09 15:06:03,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-11-09 15:06:03,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 133 transitions, 311 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 15:06:03,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:03,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-11-09 15:06:03,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:04,184 INFO L124 PetriNetUnfolderBase]: 908/2814 cut-off events. [2024-11-09 15:06:04,185 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-09 15:06:04,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4598 conditions, 2814 events. 908/2814 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 22615 event pairs, 760 based on Foata normal form. 4/2444 useless extension candidates. Maximal degree in co-relation 4523. Up to 1684 conditions per place. [2024-11-09 15:06:04,204 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 64 selfloop transitions, 15 changer transitions 0/141 dead transitions. [2024-11-09 15:06:04,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 141 transitions, 517 flow [2024-11-09 15:06:04,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 15:06:04,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 15:06:04,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1043 transitions. [2024-11-09 15:06:04,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4265848670756646 [2024-11-09 15:06:04,207 INFO L175 Difference]: Start difference. First operand has 138 places, 133 transitions, 311 flow. Second operand 15 states and 1043 transitions. [2024-11-09 15:06:04,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 141 transitions, 517 flow [2024-11-09 15:06:04,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 141 transitions, 511 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:06:04,213 INFO L231 Difference]: Finished difference. Result has 153 places, 141 transitions, 402 flow [2024-11-09 15:06:04,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=402, PETRI_PLACES=153, PETRI_TRANSITIONS=141} [2024-11-09 15:06:04,214 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 24 predicate places. [2024-11-09 15:06:04,214 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 141 transitions, 402 flow [2024-11-09 15:06:04,216 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 15:06:04,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:04,216 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:04,234 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 15:06:04,420 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 15:06:04,421 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 15:06:04,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:04,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1365100194, now seen corresponding path program 2 times [2024-11-09 15:06:04,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:04,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285182878] [2024-11-09 15:06:04,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:04,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:04,787 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 15:06:04,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:04,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285182878] [2024-11-09 15:06:04,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285182878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:04,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452033412] [2024-11-09 15:06:04,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:06:04,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:04,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:04,791 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 15:06:04,792 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 15:06:04,905 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 15:06:04,905 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:06:04,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 15:06:04,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:04,975 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 15:06:04,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:06:05,184 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 15:06:05,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452033412] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:06:05,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:06:05,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-09 15:06:05,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191382942] [2024-11-09 15:06:05,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:06:05,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 15:06:05,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:05,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 15:06:05,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-09 15:06:05,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-11-09 15:06:05,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 141 transitions, 402 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 15:06:05,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:05,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-11-09 15:06:05,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:05,860 INFO L124 PetriNetUnfolderBase]: 908/2823 cut-off events. [2024-11-09 15:06:05,861 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-09 15:06:05,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4639 conditions, 2823 events. 908/2823 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 22621 event pairs, 760 based on Foata normal form. 3/2452 useless extension candidates. Maximal degree in co-relation 4504. Up to 1684 conditions per place. [2024-11-09 15:06:05,878 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 64 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2024-11-09 15:06:05,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 147 transitions, 626 flow [2024-11-09 15:06:05,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 15:06:05,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 15:06:05,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1432 transitions. [2024-11-09 15:06:05,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41834647969617295 [2024-11-09 15:06:05,884 INFO L175 Difference]: Start difference. First operand has 153 places, 141 transitions, 402 flow. Second operand 21 states and 1432 transitions. [2024-11-09 15:06:05,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 147 transitions, 626 flow [2024-11-09 15:06:05,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 147 transitions, 616 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 15:06:05,888 INFO L231 Difference]: Finished difference. Result has 172 places, 147 transitions, 503 flow [2024-11-09 15:06:05,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=503, PETRI_PLACES=172, PETRI_TRANSITIONS=147} [2024-11-09 15:06:05,889 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 43 predicate places. [2024-11-09 15:06:05,889 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 147 transitions, 503 flow [2024-11-09 15:06:05,890 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 15:06:05,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:05,890 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:05,909 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 15:06:06,091 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 15:06:06,091 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 15:06:06,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:06,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1930428173, now seen corresponding path program 3 times [2024-11-09 15:06:06,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:06,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027997513] [2024-11-09 15:06:06,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:06,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:06:06,126 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:06:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:06:06,177 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:06:06,178 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 15:06:06,179 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-11-09 15:06:06,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2024-11-09 15:06:06,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2024-11-09 15:06:06,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2024-11-09 15:06:06,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2024-11-09 15:06:06,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2024-11-09 15:06:06,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2024-11-09 15:06:06,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2024-11-09 15:06:06,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2024-11-09 15:06:06,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2024-11-09 15:06:06,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2024-11-09 15:06:06,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2024-11-09 15:06:06,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2024-11-09 15:06:06,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2024-11-09 15:06:06,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2024-11-09 15:06:06,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2024-11-09 15:06:06,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2024-11-09 15:06:06,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2024-11-09 15:06:06,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2024-11-09 15:06:06,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2024-11-09 15:06:06,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2024-11-09 15:06:06,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2024-11-09 15:06:06,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2024-11-09 15:06:06,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2024-11-09 15:06:06,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2024-11-09 15:06:06,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2024-11-09 15:06:06,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2024-11-09 15:06:06,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2024-11-09 15:06:06,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2024-11-09 15:06:06,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 15:06:06,185 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2024-11-09 15:06:06,190 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 15:06:06,190 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 15:06:06,224 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 15:06:06,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 215 transitions, 446 flow [2024-11-09 15:06:06,263 INFO L124 PetriNetUnfolderBase]: 97/420 cut-off events. [2024-11-09 15:06:06,263 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 15:06:06,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 420 events. 97/420 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2402 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 258. Up to 12 conditions per place. [2024-11-09 15:06:06,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 215 transitions, 446 flow [2024-11-09 15:06:06,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 215 transitions, 446 flow [2024-11-09 15:06:06,272 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:06:06,272 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;@5aba2605, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:06:06,272 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-11-09 15:06:06,274 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:06:06,274 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:06:06,274 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:06:06,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:06,275 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:06:06,275 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 15:06:06,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:06,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1143370, now seen corresponding path program 1 times [2024-11-09 15:06:06,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:06,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245569751] [2024-11-09 15:06:06,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:06,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:06,322 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 15:06:06,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:06,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245569751] [2024-11-09 15:06:06,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245569751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:06,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:06,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:06:06,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739544508] [2024-11-09 15:06:06,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:06,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:06:06,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:06,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:06:06,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:06:06,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-11-09 15:06:06,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 215 transitions, 446 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 15:06:06,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:06,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-11-09 15:06:06,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:12,669 INFO L124 PetriNetUnfolderBase]: 38431/83201 cut-off events. [2024-11-09 15:06:12,669 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2024-11-09 15:06:12,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139047 conditions, 83201 events. 38431/83201 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 2457. Compared 959970 event pairs, 33202 based on Foata normal form. 16614/88102 useless extension candidates. Maximal degree in co-relation 103580. Up to 55732 conditions per place. [2024-11-09 15:06:13,234 INFO L140 encePairwiseOnDemand]: 169/215 looper letters, 91 selfloop transitions, 3 changer transitions 0/177 dead transitions. [2024-11-09 15:06:13,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 177 transitions, 558 flow [2024-11-09 15:06:13,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:06:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:06:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 469 transitions. [2024-11-09 15:06:13,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5453488372093023 [2024-11-09 15:06:13,237 INFO L175 Difference]: Start difference. First operand has 170 places, 215 transitions, 446 flow. Second operand 4 states and 469 transitions. [2024-11-09 15:06:13,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 177 transitions, 558 flow [2024-11-09 15:06:13,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 177 transitions, 558 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:06:13,241 INFO L231 Difference]: Finished difference. Result has 175 places, 177 transitions, 390 flow [2024-11-09 15:06:13,241 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=175, PETRI_TRANSITIONS=177} [2024-11-09 15:06:13,242 INFO L277 CegarLoopForPetriNet]: 170 programPoint places, 5 predicate places. [2024-11-09 15:06:13,243 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 177 transitions, 390 flow [2024-11-09 15:06:13,243 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 15:06:13,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:13,244 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:06:13,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 15:06:13,244 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 15:06:13,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:13,244 INFO L85 PathProgramCache]: Analyzing trace with hash -296393980, now seen corresponding path program 1 times [2024-11-09 15:06:13,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:13,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199018738] [2024-11-09 15:06:13,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:13,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:13,314 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 15:06:13,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:13,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199018738] [2024-11-09 15:06:13,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199018738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:13,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102624309] [2024-11-09 15:06:13,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:13,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:13,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:13,319 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 15:06:13,321 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 15:06:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:13,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:06:13,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:13,448 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 15:06:13,449 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:06:13,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102624309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:13,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:06:13,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:06:13,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411048668] [2024-11-09 15:06:13,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:13,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:06:13,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:13,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:06:13,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:06:13,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-11-09 15:06:13,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 177 transitions, 390 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 15:06:13,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:13,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-11-09 15:06:13,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:19,051 INFO L124 PetriNetUnfolderBase]: 38431/83200 cut-off events. [2024-11-09 15:06:19,051 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-11-09 15:06:19,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139057 conditions, 83200 events. 38431/83200 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 2457. Compared 960078 event pairs, 33202 based on Foata normal form. 1/71488 useless extension candidates. Maximal degree in co-relation 139038. Up to 55727 conditions per place. [2024-11-09 15:06:19,795 INFO L140 encePairwiseOnDemand]: 210/215 looper letters, 87 selfloop transitions, 6 changer transitions 0/176 dead transitions. [2024-11-09 15:06:19,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 176 transitions, 572 flow [2024-11-09 15:06:19,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:06:19,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:06:19,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 592 transitions. [2024-11-09 15:06:19,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45891472868217054 [2024-11-09 15:06:19,798 INFO L175 Difference]: Start difference. First operand has 175 places, 177 transitions, 390 flow. Second operand 6 states and 592 transitions. [2024-11-09 15:06:19,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 176 transitions, 572 flow [2024-11-09 15:06:19,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 176 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:06:19,804 INFO L231 Difference]: Finished difference. Result has 178 places, 176 transitions, 396 flow [2024-11-09 15:06:19,804 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=396, PETRI_PLACES=178, PETRI_TRANSITIONS=176} [2024-11-09 15:06:19,805 INFO L277 CegarLoopForPetriNet]: 170 programPoint places, 8 predicate places. [2024-11-09 15:06:19,805 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 176 transitions, 396 flow [2024-11-09 15:06:19,805 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 15:06:19,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:19,808 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:06:19,826 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 15:06:20,011 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 15:06:20,012 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 15:06:20,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:20,012 INFO L85 PathProgramCache]: Analyzing trace with hash -598277569, now seen corresponding path program 1 times [2024-11-09 15:06:20,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:20,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170648089] [2024-11-09 15:06:20,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:20,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:20,060 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 15:06:20,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:20,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170648089] [2024-11-09 15:06:20,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170648089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:20,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:20,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:06:20,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522422504] [2024-11-09 15:06:20,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:20,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:06:20,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:20,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:06:20,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:06:20,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-11-09 15:06:20,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 176 transitions, 396 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 15:06:20,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:20,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-11-09 15:06:20,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:25,528 INFO L124 PetriNetUnfolderBase]: 38431/83199 cut-off events. [2024-11-09 15:06:25,528 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2024-11-09 15:06:25,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139059 conditions, 83199 events. 38431/83199 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 2458. Compared 959691 event pairs, 33202 based on Foata normal form. 1/71488 useless extension candidates. Maximal degree in co-relation 139034. Up to 55730 conditions per place. [2024-11-09 15:06:25,984 INFO L140 encePairwiseOnDemand]: 212/215 looper letters, 88 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2024-11-09 15:06:25,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 175 transitions, 576 flow [2024-11-09 15:06:25,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:06:25,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:06:25,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2024-11-09 15:06:25,986 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5271317829457365 [2024-11-09 15:06:25,986 INFO L175 Difference]: Start difference. First operand has 178 places, 176 transitions, 396 flow. Second operand 3 states and 340 transitions. [2024-11-09 15:06:25,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 175 transitions, 576 flow [2024-11-09 15:06:25,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 175 transitions, 554 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-09 15:06:25,989 INFO L231 Difference]: Finished difference. Result has 173 places, 175 transitions, 378 flow [2024-11-09 15:06:25,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=173, PETRI_TRANSITIONS=175} [2024-11-09 15:06:25,990 INFO L277 CegarLoopForPetriNet]: 170 programPoint places, 3 predicate places. [2024-11-09 15:06:25,990 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 175 transitions, 378 flow [2024-11-09 15:06:25,991 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 15:06:25,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:25,991 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:25,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 15:06:25,991 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 15:06:25,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:25,991 INFO L85 PathProgramCache]: Analyzing trace with hash 580166712, now seen corresponding path program 1 times [2024-11-09 15:06:25,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:25,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229069357] [2024-11-09 15:06:25,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:25,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:26,043 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 15:06:26,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:26,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229069357] [2024-11-09 15:06:26,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229069357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:26,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380994767] [2024-11-09 15:06:26,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:26,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:26,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:26,047 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 15:06:26,052 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 15:06:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:26,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:06:26,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:26,189 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 15:06:26,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:06:26,218 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 15:06:26,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380994767] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:06:26,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:06:26,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-09 15:06:26,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103148954] [2024-11-09 15:06:26,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:06:26,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:06:26,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:26,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:06:26,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:06:26,231 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-11-09 15:06:26,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 175 transitions, 378 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 15:06:26,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:26,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-11-09 15:06:26,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:31,483 INFO L124 PetriNetUnfolderBase]: 38431/83203 cut-off events. [2024-11-09 15:06:31,483 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-11-09 15:06:31,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139062 conditions, 83203 events. 38431/83203 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 2458. Compared 959736 event pairs, 33202 based on Foata normal form. 2/71494 useless extension candidates. Maximal degree in co-relation 139027. Up to 55728 conditions per place. [2024-11-09 15:06:31,898 INFO L140 encePairwiseOnDemand]: 211/215 looper letters, 88 selfloop transitions, 7 changer transitions 0/178 dead transitions. [2024-11-09 15:06:31,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 178 transitions, 583 flow [2024-11-09 15:06:31,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:06:31,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:06:31,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 678 transitions. [2024-11-09 15:06:31,901 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4504983388704319 [2024-11-09 15:06:31,901 INFO L175 Difference]: Start difference. First operand has 173 places, 175 transitions, 378 flow. Second operand 7 states and 678 transitions. [2024-11-09 15:06:31,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 178 transitions, 583 flow [2024-11-09 15:06:31,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 178 transitions, 569 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:06:31,904 INFO L231 Difference]: Finished difference. Result has 179 places, 178 transitions, 404 flow [2024-11-09 15:06:31,904 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=404, PETRI_PLACES=179, PETRI_TRANSITIONS=178} [2024-11-09 15:06:31,905 INFO L277 CegarLoopForPetriNet]: 170 programPoint places, 9 predicate places. [2024-11-09 15:06:31,905 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 178 transitions, 404 flow [2024-11-09 15:06:31,905 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 15:06:31,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:31,906 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:31,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 15:06:32,106 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 15:06:32,107 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 15:06:32,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:32,107 INFO L85 PathProgramCache]: Analyzing trace with hash 502391288, now seen corresponding path program 2 times [2024-11-09 15:06:32,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:32,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167938209] [2024-11-09 15:06:32,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:32,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:32,163 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 15:06:32,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:32,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167938209] [2024-11-09 15:06:32,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167938209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:32,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:32,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:06:32,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215569482] [2024-11-09 15:06:32,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:32,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:06:32,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:32,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:06:32,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:06:32,172 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 215 [2024-11-09 15:06:32,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 178 transitions, 404 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 15:06:32,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:32,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 215 [2024-11-09 15:06:32,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:37,814 INFO L124 PetriNetUnfolderBase]: 40160/83755 cut-off events. [2024-11-09 15:06:37,814 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2024-11-09 15:06:37,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142455 conditions, 83755 events. 40160/83755 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 2356. Compared 936967 event pairs, 17300 based on Foata normal form. 21/72438 useless extension candidates. Maximal degree in co-relation 142415. Up to 58503 conditions per place. [2024-11-09 15:06:38,209 INFO L140 encePairwiseOnDemand]: 209/215 looper letters, 140 selfloop transitions, 3 changer transitions 0/223 dead transitions. [2024-11-09 15:06:38,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 223 transitions, 780 flow [2024-11-09 15:06:38,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:06:38,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:06:38,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 469 transitions. [2024-11-09 15:06:38,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5453488372093023 [2024-11-09 15:06:38,211 INFO L175 Difference]: Start difference. First operand has 179 places, 178 transitions, 404 flow. Second operand 4 states and 469 transitions. [2024-11-09 15:06:38,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 223 transitions, 780 flow [2024-11-09 15:06:38,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 223 transitions, 776 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:06:38,215 INFO L231 Difference]: Finished difference. Result has 182 places, 180 transitions, 424 flow [2024-11-09 15:06:38,216 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=177, 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=424, PETRI_PLACES=182, PETRI_TRANSITIONS=180} [2024-11-09 15:06:38,216 INFO L277 CegarLoopForPetriNet]: 170 programPoint places, 12 predicate places. [2024-11-09 15:06:38,216 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 180 transitions, 424 flow [2024-11-09 15:06:38,216 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 15:06:38,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:38,216 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:38,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 15:06:38,217 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 15:06:38,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:38,217 INFO L85 PathProgramCache]: Analyzing trace with hash -769645055, now seen corresponding path program 1 times [2024-11-09 15:06:38,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:38,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228485395] [2024-11-09 15:06:38,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:38,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:38,331 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 15:06:38,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:38,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228485395] [2024-11-09 15:06:38,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228485395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:38,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703790871] [2024-11-09 15:06:38,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:38,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:38,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:38,334 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:06:38,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 15:06:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:38,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 15:06:38,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:38,466 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 15:06:38,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:06:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 15:06:38,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703790871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:06:38,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:06:38,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-09 15:06:38,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502776979] [2024-11-09 15:06:38,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:06:38,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 15:06:38,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:38,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 15:06:38,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-09 15:06:38,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-11-09 15:06:38,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 180 transitions, 424 flow. Second operand has 18 states, 18 states have (on average 84.27777777777777) internal successors, (1517), 18 states have internal predecessors, (1517), 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 15:06:38,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:38,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-11-09 15:06:38,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand