./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.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 d05018e114128995041419dca600f2451b0df342be45761a900c0d0704b1b40b --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:46:18,732 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:46:18,825 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:46:18,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:46:18,831 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:46:18,855 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:46:18,856 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:46:18,856 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:46:18,857 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:46:18,857 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:46:18,857 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:46:18,858 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:46:18,858 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:46:18,858 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:46:18,859 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:46:18,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:46:18,860 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:46:18,860 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:46:18,863 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:46:18,863 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:46:18,864 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:46:18,864 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:46:18,865 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:46:18,868 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:46:18,868 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:46:18,869 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:46:18,869 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:46:18,869 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:46:18,869 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:46:18,870 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:46:18,870 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:46:18,870 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:46:18,870 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:46:18,871 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:46:18,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:46:18,874 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:46:18,874 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:46:18,874 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:46:18,875 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:46:18,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:46:18,875 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:46:18,876 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:46:18,876 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:46:18,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:46:18,877 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d05018e114128995041419dca600f2451b0df342be45761a900c0d0704b1b40b [2024-10-14 23:46:19,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:46:19,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:46:19,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:46:19,155 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:46:19,155 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:46:19,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i [2024-10-14 23:46:20,712 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:46:20,944 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:46:20,945 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i [2024-10-14 23:46:20,960 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8694948fd/fc3f9d50db4d43c6beb0bb65fa3e3154/FLAGad0ac97f2 [2024-10-14 23:46:20,979 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8694948fd/fc3f9d50db4d43c6beb0bb65fa3e3154 [2024-10-14 23:46:20,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:46:20,982 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:46:20,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:46:20,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:46:20,989 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:46:20,990 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:46:20" (1/1) ... [2024-10-14 23:46:20,991 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70313f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:46:20, skipping insertion in model container [2024-10-14 23:46:20,991 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:46:20" (1/1) ... [2024-10-14 23:46:21,040 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:46:21,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:46:21,381 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:46:21,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:46:21,487 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:46:21,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:46:21 WrapperNode [2024-10-14 23:46:21,488 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:46:21,489 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:46:21,489 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:46:21,489 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:46:21,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:46:21" (1/1) ... [2024-10-14 23:46:21,509 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:46:21" (1/1) ... [2024-10-14 23:46:21,533 INFO L138 Inliner]: procedures = 173, calls = 28, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 96 [2024-10-14 23:46:21,535 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:46:21,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:46:21,536 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:46:21,536 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:46:21,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:46:21" (1/1) ... [2024-10-14 23:46:21,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:46:21" (1/1) ... [2024-10-14 23:46:21,551 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:46:21" (1/1) ... [2024-10-14 23:46:21,584 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 2 writes are split as follows [0, 2]. [2024-10-14 23:46:21,584 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:46:21" (1/1) ... [2024-10-14 23:46:21,584 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:46:21" (1/1) ... [2024-10-14 23:46:21,593 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:46:21" (1/1) ... [2024-10-14 23:46:21,600 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:46:21" (1/1) ... [2024-10-14 23:46:21,605 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:46:21" (1/1) ... [2024-10-14 23:46:21,610 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:46:21" (1/1) ... [2024-10-14 23:46:21,613 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:46:21,617 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:46:21,617 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:46:21,618 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:46:21,619 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:46:21" (1/1) ... [2024-10-14 23:46:21,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:46:21,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:46:21,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 23:46:21,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 23:46:21,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 23:46:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 23:46:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-14 23:46:21,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-14 23:46:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 23:46:21,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 23:46:21,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 23:46:21,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:46:21,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 23:46:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 23:46:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 23:46:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 23:46:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 23:46:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:46:21,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:46:21,721 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 23:46:21,831 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:46:21,833 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:46:22,030 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:46:22,030 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:46:22,263 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:46:22,263 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 23:46:22,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:46:22 BoogieIcfgContainer [2024-10-14 23:46:22,264 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:46:22,270 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:46:22,270 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:46:22,274 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:46:22,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:46:20" (1/3) ... [2024-10-14 23:46:22,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea82800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:46:22, skipping insertion in model container [2024-10-14 23:46:22,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:46:21" (2/3) ... [2024-10-14 23:46:22,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea82800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:46:22, skipping insertion in model container [2024-10-14 23:46:22,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:46:22" (3/3) ... [2024-10-14 23:46:22,278 INFO L112 eAbstractionObserver]: Analyzing ICFG 37_stack_lock_p0_vs_concur.i [2024-10-14 23:46:22,294 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:46:22,295 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-14 23:46:22,295 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:46:22,352 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:46:22,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 33 transitions, 70 flow [2024-10-14 23:46:22,420 INFO L124 PetriNetUnfolderBase]: 2/35 cut-off events. [2024-10-14 23:46:22,420 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:46:22,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 35 events. 2/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 58 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-10-14 23:46:22,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 33 transitions, 70 flow [2024-10-14 23:46:22,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 33 transitions, 70 flow [2024-10-14 23:46:22,436 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:46:22,444 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;@62d84b59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:46:22,444 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-14 23:46:22,453 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:46:22,453 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-10-14 23:46:22,453 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:46:22,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:46:22,455 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 23:46:22,455 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-14 23:46:22,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:46:22,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1692274168, now seen corresponding path program 1 times [2024-10-14 23:46:22,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:46:22,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56681424] [2024-10-14 23:46:22,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:46:22,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:46:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:46:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:46:22,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:46:22,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56681424] [2024-10-14 23:46:22,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56681424] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:46:22,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:46:22,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 23:46:22,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679594327] [2024-10-14 23:46:22,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:46:22,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:46:22,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:46:22,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:46:22,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:46:22,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-10-14 23:46:22,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:46:22,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:46:22,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-10-14 23:46:22,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:46:22,931 INFO L124 PetriNetUnfolderBase]: 33/107 cut-off events. [2024-10-14 23:46:22,932 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:46:22,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 107 events. 33/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 238 event pairs, 2 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 182. Up to 74 conditions per place. [2024-10-14 23:46:22,936 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 20 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2024-10-14 23:46:22,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 110 flow [2024-10-14 23:46:22,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:46:22,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:46:22,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-10-14 23:46:22,950 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-10-14 23:46:22,952 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 70 flow. Second operand 3 states and 63 transitions. [2024-10-14 23:46:22,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 110 flow [2024-10-14 23:46:22,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 110 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:46:22,960 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 74 flow [2024-10-14 23:46:22,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2024-10-14 23:46:22,966 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2024-10-14 23:46:22,967 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 74 flow [2024-10-14 23:46:22,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:46:22,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:46:22,968 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-14 23:46:22,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 23:46:22,969 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-14 23:46:22,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:46:22,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1692263900, now seen corresponding path program 1 times [2024-10-14 23:46:22,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:46:22,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601174815] [2024-10-14 23:46:22,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:46:22,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:46:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:46:22,997 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 23:46:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:46:23,042 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 23:46:23,044 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 23:46:23,045 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-10-14 23:46:23,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2024-10-14 23:46:23,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2024-10-14 23:46:23,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2024-10-14 23:46:23,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2024-10-14 23:46:23,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2024-10-14 23:46:23,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2024-10-14 23:46:23,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2024-10-14 23:46:23,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2024-10-14 23:46:23,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2024-10-14 23:46:23,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2024-10-14 23:46:23,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2024-10-14 23:46:23,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2024-10-14 23:46:23,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2024-10-14 23:46:23,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2024-10-14 23:46:23,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2024-10-14 23:46:23,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2024-10-14 23:46:23,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2024-10-14 23:46:23,054 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2024-10-14 23:46:23,054 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2024-10-14 23:46:23,054 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2024-10-14 23:46:23,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 23:46:23,055 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 23:46:23,060 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 23:46:23,060 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 23:46:23,105 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:46:23,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 61 transitions, 132 flow [2024-10-14 23:46:23,136 INFO L124 PetriNetUnfolderBase]: 4/66 cut-off events. [2024-10-14 23:46:23,136 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 23:46:23,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 66 events. 4/66 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 185 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 57. Up to 3 conditions per place. [2024-10-14 23:46:23,139 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 61 transitions, 132 flow [2024-10-14 23:46:23,140 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 61 transitions, 132 flow [2024-10-14 23:46:23,143 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:46:23,144 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;@62d84b59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:46:23,145 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-10-14 23:46:23,151 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:46:23,153 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-10-14 23:46:23,153 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 23:46:23,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:46:23,154 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 23:46:23,155 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-10-14 23:46:23,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:46:23,156 INFO L85 PathProgramCache]: Analyzing trace with hash -797271144, now seen corresponding path program 1 times [2024-10-14 23:46:23,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:46:23,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911411103] [2024-10-14 23:46:23,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:46:23,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:46:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:46:23,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:46:23,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:46:23,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911411103] [2024-10-14 23:46:23,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911411103] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:46:23,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:46:23,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 23:46:23,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080768715] [2024-10-14 23:46:23,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:46:23,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:46:23,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:46:23,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:46:23,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:46:23,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-10-14 23:46:23,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:46:23,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:46:23,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-10-14 23:46:23,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:46:23,744 INFO L124 PetriNetUnfolderBase]: 1189/2218 cut-off events. [2024-10-14 23:46:23,745 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-10-14 23:46:23,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4195 conditions, 2218 events. 1189/2218 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 12588 event pairs, 480 based on Foata normal form. 0/1837 useless extension candidates. Maximal degree in co-relation 3639. Up to 1892 conditions per place. [2024-10-14 23:46:23,778 INFO L140 encePairwiseOnDemand]: 41/61 looper letters, 37 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2024-10-14 23:46:23,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 209 flow [2024-10-14 23:46:23,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:46:23,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:46:23,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-10-14 23:46:23,783 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.639344262295082 [2024-10-14 23:46:23,783 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 132 flow. Second operand 3 states and 117 transitions. [2024-10-14 23:46:23,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 209 flow [2024-10-14 23:46:23,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 57 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:46:23,787 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 139 flow [2024-10-14 23:46:23,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-10-14 23:46:23,790 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2024-10-14 23:46:23,791 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 139 flow [2024-10-14 23:46:23,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:46:23,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:46:23,791 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-10-14 23:46:23,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 23:46:23,792 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-10-14 23:46:23,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:46:23,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1438888476, now seen corresponding path program 1 times [2024-10-14 23:46:23,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:46:23,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757394685] [2024-10-14 23:46:23,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:46:23,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:46:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:46:23,813 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 23:46:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:46:23,831 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 23:46:23,834 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 23:46:23,834 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2024-10-14 23:46:23,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2024-10-14 23:46:23,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2024-10-14 23:46:23,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2024-10-14 23:46:23,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2024-10-14 23:46:23,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2024-10-14 23:46:23,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2024-10-14 23:46:23,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2024-10-14 23:46:23,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2024-10-14 23:46:23,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2024-10-14 23:46:23,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2024-10-14 23:46:23,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2024-10-14 23:46:23,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2024-10-14 23:46:23,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2024-10-14 23:46:23,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2024-10-14 23:46:23,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2024-10-14 23:46:23,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2024-10-14 23:46:23,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2024-10-14 23:46:23,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2024-10-14 23:46:23,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2024-10-14 23:46:23,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2024-10-14 23:46:23,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2024-10-14 23:46:23,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2024-10-14 23:46:23,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2024-10-14 23:46:23,840 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2024-10-14 23:46:23,840 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2024-10-14 23:46:23,840 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2024-10-14 23:46:23,840 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2024-10-14 23:46:23,840 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2024-10-14 23:46:23,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2024-10-14 23:46:23,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2024-10-14 23:46:23,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 23:46:23,841 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 23:46:23,842 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 23:46:23,842 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-14 23:46:23,895 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:46:23,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 89 transitions, 196 flow [2024-10-14 23:46:23,914 INFO L124 PetriNetUnfolderBase]: 6/97 cut-off events. [2024-10-14 23:46:23,915 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 23:46:23,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 97 events. 6/97 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 339 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2024-10-14 23:46:23,917 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 89 transitions, 196 flow [2024-10-14 23:46:23,918 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 89 transitions, 196 flow [2024-10-14 23:46:23,920 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:46:23,921 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;@62d84b59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:46:23,924 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-10-14 23:46:23,926 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:46:23,927 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-10-14 23:46:23,927 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 23:46:23,927 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:46:23,927 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 23:46:23,927 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-10-14 23:46:23,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:46:23,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1836460797, now seen corresponding path program 1 times [2024-10-14 23:46:23,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:46:23,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550742142] [2024-10-14 23:46:23,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:46:23,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:46:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:46:23,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:46:23,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:46:23,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550742142] [2024-10-14 23:46:23,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550742142] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:46:23,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:46:23,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 23:46:23,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903812022] [2024-10-14 23:46:23,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:46:23,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:46:23,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:46:23,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:46:23,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:46:23,994 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-10-14 23:46:23,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:46:23,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:46:23,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-10-14 23:46:23,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:46:28,208 INFO L124 PetriNetUnfolderBase]: 28473/43106 cut-off events. [2024-10-14 23:46:28,209 INFO L125 PetriNetUnfolderBase]: For 1424/1424 co-relation queries the response was YES. [2024-10-14 23:46:28,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83426 conditions, 43106 events. 28473/43106 cut-off events. For 1424/1424 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 302911 event pairs, 15869 based on Foata normal form. 0/35400 useless extension candidates. Maximal degree in co-relation 67665. Up to 39266 conditions per place. [2024-10-14 23:46:28,581 INFO L140 encePairwiseOnDemand]: 60/89 looper letters, 54 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2024-10-14 23:46:28,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 83 transitions, 312 flow [2024-10-14 23:46:28,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:46:28,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:46:28,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2024-10-14 23:46:28,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6404494382022472 [2024-10-14 23:46:28,586 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 196 flow. Second operand 3 states and 171 transitions. [2024-10-14 23:46:28,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 83 transitions, 312 flow [2024-10-14 23:46:28,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 83 transitions, 308 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-10-14 23:46:28,593 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 204 flow [2024-10-14 23:46:28,593 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2024-10-14 23:46:28,594 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, -10 predicate places. [2024-10-14 23:46:28,594 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 204 flow [2024-10-14 23:46:28,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:46:28,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:46:28,595 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:46:28,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 23:46:28,595 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-10-14 23:46:28,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:46:28,595 INFO L85 PathProgramCache]: Analyzing trace with hash 710873182, now seen corresponding path program 1 times [2024-10-14 23:46:28,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:46:28,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135939656] [2024-10-14 23:46:28,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:46:28,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:46:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:46:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:46:28,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:46:28,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135939656] [2024-10-14 23:46:28,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135939656] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:46:28,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:46:28,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:46:28,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462770646] [2024-10-14 23:46:28,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:46:28,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:46:28,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:46:28,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:46:28,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:46:28,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 89 [2024-10-14 23:46:28,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:46:28,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:46:28,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 89 [2024-10-14 23:46:28,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:46:33,257 INFO L124 PetriNetUnfolderBase]: 35999/55396 cut-off events. [2024-10-14 23:46:33,257 INFO L125 PetriNetUnfolderBase]: For 3155/3155 co-relation queries the response was YES. [2024-10-14 23:46:33,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116949 conditions, 55396 events. 35999/55396 cut-off events. For 3155/3155 co-relation queries the response was YES. Maximal size of possible extension queue 1523. Compared 417044 event pairs, 11201 based on Foata normal form. 807/45789 useless extension candidates. Maximal degree in co-relation 110441. Up to 45515 conditions per place. [2024-10-14 23:46:33,582 INFO L140 encePairwiseOnDemand]: 80/89 looper letters, 116 selfloop transitions, 12 changer transitions 0/151 dead transitions. [2024-10-14 23:46:33,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 151 transitions, 693 flow [2024-10-14 23:46:33,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:46:33,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:46:33,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 270 transitions. [2024-10-14 23:46:33,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5056179775280899 [2024-10-14 23:46:33,585 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 204 flow. Second operand 6 states and 270 transitions. [2024-10-14 23:46:33,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 151 transitions, 693 flow [2024-10-14 23:46:33,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 151 transitions, 689 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:46:33,594 INFO L231 Difference]: Finished difference. Result has 87 places, 84 transitions, 283 flow [2024-10-14 23:46:33,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=87, PETRI_TRANSITIONS=84} [2024-10-14 23:46:33,596 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, -3 predicate places. [2024-10-14 23:46:33,597 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 84 transitions, 283 flow [2024-10-14 23:46:33,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:46:33,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:46:33,598 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-10-14 23:46:33,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 23:46:33,598 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-10-14 23:46:33,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:46:33,599 INFO L85 PathProgramCache]: Analyzing trace with hash -543112901, now seen corresponding path program 1 times [2024-10-14 23:46:33,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:46:33,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632134648] [2024-10-14 23:46:33,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:46:33,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:46:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:46:33,614 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 23:46:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:46:33,628 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 23:46:33,630 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 23:46:33,630 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2024-10-14 23:46:33,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2024-10-14 23:46:33,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2024-10-14 23:46:33,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2024-10-14 23:46:33,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2024-10-14 23:46:33,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2024-10-14 23:46:33,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2024-10-14 23:46:33,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2024-10-14 23:46:33,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2024-10-14 23:46:33,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2024-10-14 23:46:33,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2024-10-14 23:46:33,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2024-10-14 23:46:33,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2024-10-14 23:46:33,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2024-10-14 23:46:33,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2024-10-14 23:46:33,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2024-10-14 23:46:33,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2024-10-14 23:46:33,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2024-10-14 23:46:33,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2024-10-14 23:46:33,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2024-10-14 23:46:33,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2024-10-14 23:46:33,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2024-10-14 23:46:33,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 41 remaining) [2024-10-14 23:46:33,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 41 remaining) [2024-10-14 23:46:33,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 41 remaining) [2024-10-14 23:46:33,634 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2024-10-14 23:46:33,635 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2024-10-14 23:46:33,635 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2024-10-14 23:46:33,635 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2024-10-14 23:46:33,635 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2024-10-14 23:46:33,635 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2024-10-14 23:46:33,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2024-10-14 23:46:33,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2024-10-14 23:46:33,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2024-10-14 23:46:33,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2024-10-14 23:46:33,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2024-10-14 23:46:33,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2024-10-14 23:46:33,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2024-10-14 23:46:33,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2024-10-14 23:46:33,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2024-10-14 23:46:33,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2024-10-14 23:46:33,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 23:46:33,638 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-14 23:46:33,639 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 23:46:33,639 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-14 23:46:33,703 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:46:33,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 117 transitions, 262 flow [2024-10-14 23:46:33,725 INFO L124 PetriNetUnfolderBase]: 8/128 cut-off events. [2024-10-14 23:46:33,727 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 23:46:33,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 128 events. 8/128 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 503 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 111. Up to 5 conditions per place. [2024-10-14 23:46:33,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 117 transitions, 262 flow [2024-10-14 23:46:33,733 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 117 transitions, 262 flow [2024-10-14 23:46:33,734 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:46:33,734 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;@62d84b59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:46:33,734 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2024-10-14 23:46:33,738 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:46:33,738 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-10-14 23:46:33,739 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 23:46:33,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:46:33,739 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 23:46:33,739 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-14 23:46:33,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:46:33,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1003589021, now seen corresponding path program 1 times [2024-10-14 23:46:33,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:46:33,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625165169] [2024-10-14 23:46:33,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:46:33,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:46:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:46:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:46:33,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:46:33,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625165169] [2024-10-14 23:46:33,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625165169] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:46:33,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:46:33,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 23:46:33,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765132659] [2024-10-14 23:46:33,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:46:33,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:46:33,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:46:33,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:46:33,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:46:33,769 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 117 [2024-10-14 23:46:33,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 117 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:46:33,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:46:33,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 117 [2024-10-14 23:46:33,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand