./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/stack-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f 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/pthread/stack-1.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 a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:26:33,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:26:33,873 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:26:33,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:26:33,877 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:26:33,903 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:26:33,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:26:33,908 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:26:33,908 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:26:33,909 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:26:33,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:26:33,909 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:26:33,909 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:26:33,910 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:26:33,910 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:26:33,911 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:26:33,914 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:26:33,914 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:26:33,915 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:26:33,915 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:26:33,915 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:26:33,918 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:26:33,918 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:26:33,918 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:26:33,918 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:26:33,919 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:26:33,919 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:26:33,919 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:26:33,919 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:26:33,919 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:26:33,920 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:26:33,920 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:26:33,920 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:26:33,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:26:33,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:26:33,921 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:26:33,921 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:26:33,921 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:26:33,921 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:26:33,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:26:33,922 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:26:33,922 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:26:33,922 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:26:33,923 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:26:33,923 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 [2024-11-12 20:26:34,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:26:34,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:26:34,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:26:34,161 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:26:34,162 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:26:34,163 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack-1.i [2024-11-12 20:26:35,481 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:26:35,700 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:26:35,700 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack-1.i [2024-11-12 20:26:35,713 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f6c577d8/ebcc8791a13c4cb68944aac3f4a3225c/FLAG2cee3fb77 [2024-11-12 20:26:35,726 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f6c577d8/ebcc8791a13c4cb68944aac3f4a3225c [2024-11-12 20:26:35,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:26:35,729 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:26:35,730 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:26:35,730 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:26:35,735 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:26:35,736 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:26:35" (1/1) ... [2024-11-12 20:26:35,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f3a4ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:35, skipping insertion in model container [2024-11-12 20:26:35,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:26:35" (1/1) ... [2024-11-12 20:26:35,779 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:26:36,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:26:36,128 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:26:36,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:26:36,293 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:26:36,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:36 WrapperNode [2024-11-12 20:26:36,294 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:26:36,295 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:26:36,295 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:26:36,295 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:26:36,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:36" (1/1) ... [2024-11-12 20:26:36,321 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:36" (1/1) ... [2024-11-12 20:26:36,357 INFO L138 Inliner]: procedures = 277, calls = 36, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 162 [2024-11-12 20:26:36,361 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:26:36,361 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:26:36,361 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:26:36,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:26:36,370 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:36" (1/1) ... [2024-11-12 20:26:36,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:36" (1/1) ... [2024-11-12 20:26:36,373 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:36" (1/1) ... [2024-11-12 20:26:36,398 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 1 writes are split as follows [0, 0, 1]. [2024-11-12 20:26:36,399 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:36" (1/1) ... [2024-11-12 20:26:36,399 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:36" (1/1) ... [2024-11-12 20:26:36,408 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:36" (1/1) ... [2024-11-12 20:26:36,415 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:36" (1/1) ... [2024-11-12 20:26:36,417 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:36" (1/1) ... [2024-11-12 20:26:36,418 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:36" (1/1) ... [2024-11-12 20:26:36,424 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:26:36,425 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:26:36,425 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:26:36,425 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:26:36,426 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:36" (1/1) ... [2024-11-12 20:26:36,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:26:36,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:26:36,464 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) [2024-11-12 20:26:36,470 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 [2024-11-12 20:26:36,517 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-12 20:26:36,518 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-12 20:26:36,518 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-12 20:26:36,518 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-12 20:26:36,518 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 20:26:36,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:26:36,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 20:26:36,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 20:26:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 20:26:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 20:26:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 20:26:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 20:26:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:26:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:26:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:26:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 20:26:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:26:36,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:26:36,525 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:26:36,632 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:26:36,634 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:26:36,887 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:26:36,888 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:26:37,092 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:26:37,092 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 20:26:37,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:26:37 BoogieIcfgContainer [2024-11-12 20:26:37,093 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:26:37,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:26:37,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:26:37,098 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:26:37,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:26:35" (1/3) ... [2024-11-12 20:26:37,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad55b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:26:37, skipping insertion in model container [2024-11-12 20:26:37,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:26:36" (2/3) ... [2024-11-12 20:26:37,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad55b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:26:37, skipping insertion in model container [2024-11-12 20:26:37,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:26:37" (3/3) ... [2024-11-12 20:26:37,103 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2024-11-12 20:26:37,116 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:26:37,117 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-12 20:26:37,117 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:26:37,184 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 20:26:37,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2024-11-12 20:26:37,249 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-11-12 20:26:37,251 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 20:26:37,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 128 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-11-12 20:26:37,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2024-11-12 20:26:37,258 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2024-11-12 20:26:37,264 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:26:37,271 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;@163625b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:26:37,271 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-12 20:26:37,278 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:26:37,278 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2024-11-12 20:26:37,278 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 20:26:37,279 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:37,279 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:37,280 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:26:37,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:37,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1698815092, now seen corresponding path program 1 times [2024-11-12 20:26:37,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:37,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89335270] [2024-11-12 20:26:37,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:37,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:37,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:37,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89335270] [2024-11-12 20:26:37,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89335270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:37,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:37,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:26:37,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017935023] [2024-11-12 20:26:37,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:37,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:26:37,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:37,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:26:37,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:26:37,773 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-12 20:26:37,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-12 20:26:37,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:37,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-12 20:26:37,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:38,020 INFO L124 PetriNetUnfolderBase]: 730/1442 cut-off events. [2024-11-12 20:26:38,020 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-12 20:26:38,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 1442 events. 730/1442 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7590 event pairs, 224 based on Foata normal form. 40/1333 useless extension candidates. Maximal degree in co-relation 2569. Up to 692 conditions per place. [2024-11-12 20:26:38,032 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 58 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-11-12 20:26:38,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 77 transitions, 298 flow [2024-11-12 20:26:38,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:26:38,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:26:38,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-11-12 20:26:38,042 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-12 20:26:38,044 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 4 states and 132 transitions. [2024-11-12 20:26:38,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 77 transitions, 298 flow [2024-11-12 20:26:38,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 289 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:26:38,049 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 128 flow [2024-11-12 20:26:38,051 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2024-11-12 20:26:38,054 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-11-12 20:26:38,054 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 128 flow [2024-11-12 20:26:38,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-12 20:26:38,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:38,055 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:38,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:26:38,055 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:26:38,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:38,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1142909908, now seen corresponding path program 1 times [2024-11-12 20:26:38,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:38,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575717835] [2024-11-12 20:26:38,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:38,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:38,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:38,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575717835] [2024-11-12 20:26:38,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575717835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:38,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:38,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:26:38,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940787671] [2024-11-12 20:26:38,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:38,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:26:38,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:38,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:26:38,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:26:38,121 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-12 20:26:38,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-12 20:26:38,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:38,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-12 20:26:38,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:38,387 INFO L124 PetriNetUnfolderBase]: 1180/2391 cut-off events. [2024-11-12 20:26:38,388 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2024-11-12 20:26:38,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4818 conditions, 2391 events. 1180/2391 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13839 event pairs, 613 based on Foata normal form. 74/2301 useless extension candidates. Maximal degree in co-relation 4166. Up to 1299 conditions per place. [2024-11-12 20:26:38,399 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 71 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2024-11-12 20:26:38,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 88 transitions, 399 flow [2024-11-12 20:26:38,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:26:38,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:26:38,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-11-12 20:26:38,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-12 20:26:38,402 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 128 flow. Second operand 4 states and 132 transitions. [2024-11-12 20:26:38,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 88 transitions, 399 flow [2024-11-12 20:26:38,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 399 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:26:38,404 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 152 flow [2024-11-12 20:26:38,404 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-11-12 20:26:38,405 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2024-11-12 20:26:38,405 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 152 flow [2024-11-12 20:26:38,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-12 20:26:38,405 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:38,406 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:38,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 20:26:38,406 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:26:38,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:38,406 INFO L85 PathProgramCache]: Analyzing trace with hash 108896876, now seen corresponding path program 1 times [2024-11-12 20:26:38,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:38,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694192211] [2024-11-12 20:26:38,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:38,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:38,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:38,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694192211] [2024-11-12 20:26:38,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694192211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:38,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:38,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:26:38,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707859877] [2024-11-12 20:26:38,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:38,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:26:38,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:38,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:26:38,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:26:38,473 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-12 20:26:38,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-12 20:26:38,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:38,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-12 20:26:38,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:38,788 INFO L124 PetriNetUnfolderBase]: 1703/3326 cut-off events. [2024-11-12 20:26:38,788 INFO L125 PetriNetUnfolderBase]: For 993/1035 co-relation queries the response was YES. [2024-11-12 20:26:38,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7360 conditions, 3326 events. 1703/3326 cut-off events. For 993/1035 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21159 event pairs, 837 based on Foata normal form. 82/3289 useless extension candidates. Maximal degree in co-relation 5256. Up to 1936 conditions per place. [2024-11-12 20:26:38,806 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 72 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2024-11-12 20:26:38,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 439 flow [2024-11-12 20:26:38,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:26:38,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:26:38,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-11-12 20:26:38,808 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2024-11-12 20:26:38,808 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 152 flow. Second operand 4 states and 133 transitions. [2024-11-12 20:26:38,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 439 flow [2024-11-12 20:26:38,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:26:38,815 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 174 flow [2024-11-12 20:26:38,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-12 20:26:38,816 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-11-12 20:26:38,817 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 174 flow [2024-11-12 20:26:38,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-12 20:26:38,817 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:38,817 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:38,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 20:26:38,817 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:26:38,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:38,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1398652797, now seen corresponding path program 1 times [2024-11-12 20:26:38,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:38,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030495065] [2024-11-12 20:26:38,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:38,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:38,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:38,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:38,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030495065] [2024-11-12 20:26:38,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030495065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:38,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:38,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:26:38,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199479109] [2024-11-12 20:26:38,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:38,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:26:38,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:38,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:26:38,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:26:38,898 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-12 20:26:38,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-12 20:26:38,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:38,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-12 20:26:38,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:39,105 INFO L124 PetriNetUnfolderBase]: 898/2001 cut-off events. [2024-11-12 20:26:39,106 INFO L125 PetriNetUnfolderBase]: For 983/1079 co-relation queries the response was YES. [2024-11-12 20:26:39,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4745 conditions, 2001 events. 898/2001 cut-off events. For 983/1079 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11991 event pairs, 285 based on Foata normal form. 76/2025 useless extension candidates. Maximal degree in co-relation 3692. Up to 946 conditions per place. [2024-11-12 20:26:39,117 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 46 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-11-12 20:26:39,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 334 flow [2024-11-12 20:26:39,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:26:39,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:26:39,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-12 20:26:39,119 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-12 20:26:39,119 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 174 flow. Second operand 3 states and 96 transitions. [2024-11-12 20:26:39,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 334 flow [2024-11-12 20:26:39,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 328 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-12 20:26:39,124 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 173 flow [2024-11-12 20:26:39,124 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-11-12 20:26:39,125 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2024-11-12 20:26:39,125 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 173 flow [2024-11-12 20:26:39,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-12 20:26:39,126 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:39,126 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:39,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:26:39,126 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:26:39,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:39,127 INFO L85 PathProgramCache]: Analyzing trace with hash -962841024, now seen corresponding path program 1 times [2024-11-12 20:26:39,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:39,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447175629] [2024-11-12 20:26:39,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:39,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:39,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:39,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:39,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447175629] [2024-11-12 20:26:39,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447175629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:26:39,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369610370] [2024-11-12 20:26:39,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:39,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:26:39,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:26:39,213 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) [2024-11-12 20:26:39,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:26:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:39,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:26:39,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:26:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:39,350 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:26:39,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369610370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:39,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:26:39,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-12 20:26:39,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328979194] [2024-11-12 20:26:39,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:39,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:26:39,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:39,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:26:39,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:26:39,359 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-12 20:26:39,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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) [2024-11-12 20:26:39,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:39,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-12 20:26:39,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:39,616 INFO L124 PetriNetUnfolderBase]: 931/2009 cut-off events. [2024-11-12 20:26:39,617 INFO L125 PetriNetUnfolderBase]: For 1022/1128 co-relation queries the response was YES. [2024-11-12 20:26:39,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4977 conditions, 2009 events. 931/2009 cut-off events. For 1022/1128 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11484 event pairs, 189 based on Foata normal form. 70/2022 useless extension candidates. Maximal degree in co-relation 2701. Up to 735 conditions per place. [2024-11-12 20:26:39,626 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 87 selfloop transitions, 9 changer transitions 0/109 dead transitions. [2024-11-12 20:26:39,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 109 transitions, 587 flow [2024-11-12 20:26:39,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 20:26:39,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 20:26:39,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-11-12 20:26:39,628 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-11-12 20:26:39,628 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 173 flow. Second operand 7 states and 188 transitions. [2024-11-12 20:26:39,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 109 transitions, 587 flow [2024-11-12 20:26:39,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 109 transitions, 577 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:26:39,632 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 229 flow [2024-11-12 20:26:39,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2024-11-12 20:26:39,633 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2024-11-12 20:26:39,633 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 229 flow [2024-11-12 20:26:39,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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) [2024-11-12 20:26:39,633 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:39,633 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:39,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 20:26:39,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:26:39,838 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:26:39,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:39,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1142264494, now seen corresponding path program 1 times [2024-11-12 20:26:39,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:39,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110943437] [2024-11-12 20:26:39,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:39,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:39,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:39,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110943437] [2024-11-12 20:26:39,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110943437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:39,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:39,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:26:39,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274103577] [2024-11-12 20:26:39,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:39,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:26:39,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:39,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:26:39,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:26:39,908 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-12 20:26:39,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-11-12 20:26:39,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:39,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-12 20:26:39,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:40,144 INFO L124 PetriNetUnfolderBase]: 1173/2608 cut-off events. [2024-11-12 20:26:40,145 INFO L125 PetriNetUnfolderBase]: For 2099/2217 co-relation queries the response was YES. [2024-11-12 20:26:40,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6746 conditions, 2608 events. 1173/2608 cut-off events. For 2099/2217 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 16508 event pairs, 646 based on Foata normal form. 26/2627 useless extension candidates. Maximal degree in co-relation 5213. Up to 1363 conditions per place. [2024-11-12 20:26:40,160 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 63 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2024-11-12 20:26:40,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 84 transitions, 494 flow [2024-11-12 20:26:40,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:26:40,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:26:40,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-11-12 20:26:40,162 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2024-11-12 20:26:40,162 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 229 flow. Second operand 4 states and 115 transitions. [2024-11-12 20:26:40,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 84 transitions, 494 flow [2024-11-12 20:26:40,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 84 transitions, 486 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-12 20:26:40,168 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 271 flow [2024-11-12 20:26:40,168 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-11-12 20:26:40,168 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 22 predicate places. [2024-11-12 20:26:40,169 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 271 flow [2024-11-12 20:26:40,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-11-12 20:26:40,169 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:40,169 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:40,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 20:26:40,169 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:26:40,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:40,170 INFO L85 PathProgramCache]: Analyzing trace with hash 216699803, now seen corresponding path program 1 times [2024-11-12 20:26:40,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:40,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650088338] [2024-11-12 20:26:40,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:40,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:40,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:40,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:40,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650088338] [2024-11-12 20:26:40,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650088338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:26:40,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775970423] [2024-11-12 20:26:40,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:40,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:26:40,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:26:40,276 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) [2024-11-12 20:26:40,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:26:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:40,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:26:40,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:26:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:40,406 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:26:40,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:40,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775970423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:26:40,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:26:40,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-12 20:26:40,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698683123] [2024-11-12 20:26:40,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:26:40,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:26:40,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:40,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:26:40,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:26:40,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-12 20:26:40,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 271 flow. Second operand has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 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) [2024-11-12 20:26:40,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:40,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-12 20:26:40,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:41,149 INFO L124 PetriNetUnfolderBase]: 2547/5481 cut-off events. [2024-11-12 20:26:41,150 INFO L125 PetriNetUnfolderBase]: For 7148/7564 co-relation queries the response was YES. [2024-11-12 20:26:41,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14866 conditions, 5481 events. 2547/5481 cut-off events. For 7148/7564 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 35580 event pairs, 407 based on Foata normal form. 151/5625 useless extension candidates. Maximal degree in co-relation 7920. Up to 1167 conditions per place. [2024-11-12 20:26:41,179 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 191 selfloop transitions, 33 changer transitions 0/236 dead transitions. [2024-11-12 20:26:41,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 236 transitions, 1518 flow [2024-11-12 20:26:41,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 20:26:41,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-12 20:26:41,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 426 transitions. [2024-11-12 20:26:41,182 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-11-12 20:26:41,182 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 271 flow. Second operand 16 states and 426 transitions. [2024-11-12 20:26:41,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 236 transitions, 1518 flow [2024-11-12 20:26:41,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 236 transitions, 1506 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-12 20:26:41,192 INFO L231 Difference]: Finished difference. Result has 87 places, 86 transitions, 598 flow [2024-11-12 20:26:41,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=598, PETRI_PLACES=87, PETRI_TRANSITIONS=86} [2024-11-12 20:26:41,193 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 41 predicate places. [2024-11-12 20:26:41,193 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 598 flow [2024-11-12 20:26:41,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 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) [2024-11-12 20:26:41,194 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:41,194 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:41,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 20:26:41,394 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,SelfDestructingSolverStorable6 [2024-11-12 20:26:41,395 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:26:41,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:41,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1987919382, now seen corresponding path program 1 times [2024-11-12 20:26:41,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:41,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991509912] [2024-11-12 20:26:41,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:41,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:41,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:41,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991509912] [2024-11-12 20:26:41,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991509912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:26:41,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516144414] [2024-11-12 20:26:41,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:41,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:26:41,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:26:41,476 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) [2024-11-12 20:26:41,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:26:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:41,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:26:41,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:26:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:41,600 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:26:41,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516144414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:41,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:26:41,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-12 20:26:41,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805677941] [2024-11-12 20:26:41,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:41,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:26:41,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:41,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:26:41,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:26:41,610 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-12 20:26:41,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 598 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-12 20:26:41,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:41,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-12 20:26:41,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:42,193 INFO L124 PetriNetUnfolderBase]: 3236/6478 cut-off events. [2024-11-12 20:26:42,193 INFO L125 PetriNetUnfolderBase]: For 10477/10667 co-relation queries the response was YES. [2024-11-12 20:26:42,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18440 conditions, 6478 events. 3236/6478 cut-off events. For 10477/10667 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 41543 event pairs, 624 based on Foata normal form. 204/6476 useless extension candidates. Maximal degree in co-relation 15532. Up to 2915 conditions per place. [2024-11-12 20:26:42,221 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 125 selfloop transitions, 5 changer transitions 0/152 dead transitions. [2024-11-12 20:26:42,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 152 transitions, 1383 flow [2024-11-12 20:26:42,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:26:42,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:26:42,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-12 20:26:42,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-12 20:26:42,222 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 598 flow. Second operand 4 states and 116 transitions. [2024-11-12 20:26:42,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 152 transitions, 1383 flow [2024-11-12 20:26:42,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 152 transitions, 1311 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-11-12 20:26:42,235 INFO L231 Difference]: Finished difference. Result has 86 places, 85 transitions, 564 flow [2024-11-12 20:26:42,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=564, PETRI_PLACES=86, PETRI_TRANSITIONS=85} [2024-11-12 20:26:42,236 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2024-11-12 20:26:42,236 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 85 transitions, 564 flow [2024-11-12 20:26:42,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-12 20:26:42,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:42,236 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:42,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 20:26:42,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:26:42,442 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:26:42,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:42,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1862909711, now seen corresponding path program 1 times [2024-11-12 20:26:42,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:42,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078335209] [2024-11-12 20:26:42,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:42,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:42,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:42,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078335209] [2024-11-12 20:26:42,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078335209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:42,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:42,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:26:42,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219253527] [2024-11-12 20:26:42,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:42,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:26:42,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:42,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:26:42,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:26:42,517 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-12 20:26:42,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 564 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2024-11-12 20:26:42,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:42,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-12 20:26:42,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:43,066 INFO L124 PetriNetUnfolderBase]: 2796/5813 cut-off events. [2024-11-12 20:26:43,067 INFO L125 PetriNetUnfolderBase]: For 11448/11785 co-relation queries the response was YES. [2024-11-12 20:26:43,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17402 conditions, 5813 events. 2796/5813 cut-off events. For 11448/11785 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 37220 event pairs, 564 based on Foata normal form. 39/5851 useless extension candidates. Maximal degree in co-relation 14507. Up to 3403 conditions per place. [2024-11-12 20:26:43,101 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 119 selfloop transitions, 13 changer transitions 0/142 dead transitions. [2024-11-12 20:26:43,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 142 transitions, 1115 flow [2024-11-12 20:26:43,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:26:43,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:26:43,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-11-12 20:26:43,102 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5659722222222222 [2024-11-12 20:26:43,102 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 564 flow. Second operand 6 states and 163 transitions. [2024-11-12 20:26:43,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 142 transitions, 1115 flow [2024-11-12 20:26:43,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 142 transitions, 1075 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:26:43,119 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 653 flow [2024-11-12 20:26:43,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=653, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2024-11-12 20:26:43,120 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 45 predicate places. [2024-11-12 20:26:43,120 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 653 flow [2024-11-12 20:26:43,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2024-11-12 20:26:43,120 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:43,120 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:43,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 20:26:43,120 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:26:43,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:43,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1495958197, now seen corresponding path program 1 times [2024-11-12 20:26:43,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:43,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89607563] [2024-11-12 20:26:43,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:43,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:26:43,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:43,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89607563] [2024-11-12 20:26:43,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89607563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:43,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:43,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:26:43,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937994482] [2024-11-12 20:26:43,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:43,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:26:43,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:43,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:26:43,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:26:43,165 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-12 20:26:43,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 653 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-12 20:26:43,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:43,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-12 20:26:43,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:43,785 INFO L124 PetriNetUnfolderBase]: 3062/6446 cut-off events. [2024-11-12 20:26:43,786 INFO L125 PetriNetUnfolderBase]: For 11345/11483 co-relation queries the response was YES. [2024-11-12 20:26:43,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18211 conditions, 6446 events. 3062/6446 cut-off events. For 11345/11483 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 42720 event pairs, 581 based on Foata normal form. 0/6445 useless extension candidates. Maximal degree in co-relation 15403. Up to 2690 conditions per place. [2024-11-12 20:26:43,821 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 143 selfloop transitions, 6 changer transitions 0/172 dead transitions. [2024-11-12 20:26:43,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 172 transitions, 1615 flow [2024-11-12 20:26:43,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:26:43,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:26:43,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-12 20:26:43,825 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-12 20:26:43,825 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 653 flow. Second operand 4 states and 116 transitions. [2024-11-12 20:26:43,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 172 transitions, 1615 flow [2024-11-12 20:26:43,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 172 transitions, 1605 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:26:43,851 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 665 flow [2024-11-12 20:26:43,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=665, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2024-11-12 20:26:43,853 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-11-12 20:26:43,853 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 665 flow [2024-11-12 20:26:43,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-12 20:26:43,854 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:43,854 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:43,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 20:26:43,854 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:26:43,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:43,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1462794208, now seen corresponding path program 1 times [2024-11-12 20:26:43,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:43,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976334207] [2024-11-12 20:26:43,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:43,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:43,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:43,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976334207] [2024-11-12 20:26:43,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976334207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:26:43,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113174443] [2024-11-12 20:26:43,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:43,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:26:43,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:26:43,938 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) [2024-11-12 20:26:43,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 20:26:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:44,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:26:44,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:26:44,063 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:44,063 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:26:44,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113174443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:44,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:26:44,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-12 20:26:44,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185984832] [2024-11-12 20:26:44,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:44,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:26:44,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:44,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:26:44,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:26:44,071 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-12 20:26:44,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 665 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2024-11-12 20:26:44,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:44,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-12 20:26:44,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:44,768 INFO L124 PetriNetUnfolderBase]: 3167/6166 cut-off events. [2024-11-12 20:26:44,769 INFO L125 PetriNetUnfolderBase]: For 14451/14463 co-relation queries the response was YES. [2024-11-12 20:26:44,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19479 conditions, 6166 events. 3167/6166 cut-off events. For 14451/14463 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 38726 event pairs, 544 based on Foata normal form. 178/6161 useless extension candidates. Maximal degree in co-relation 18617. Up to 3741 conditions per place. [2024-11-12 20:26:44,799 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 96 selfloop transitions, 5 changer transitions 0/123 dead transitions. [2024-11-12 20:26:44,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 123 transitions, 1087 flow [2024-11-12 20:26:44,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:26:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:26:44,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-11-12 20:26:44,801 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-12 20:26:44,801 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 665 flow. Second operand 4 states and 112 transitions. [2024-11-12 20:26:44,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 123 transitions, 1087 flow [2024-11-12 20:26:44,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 123 transitions, 1065 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:26:44,822 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 663 flow [2024-11-12 20:26:44,822 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=663, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-11-12 20:26:44,823 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-11-12 20:26:44,823 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 663 flow [2024-11-12 20:26:44,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2024-11-12 20:26:44,823 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:44,823 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-12 20:26:44,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 20:26:45,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:26:45,028 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:26:45,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:45,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1898020289, now seen corresponding path program 1 times [2024-11-12 20:26:45,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:45,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512843510] [2024-11-12 20:26:45,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:45,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:26:45,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:45,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512843510] [2024-11-12 20:26:45,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512843510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:45,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:45,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:26:45,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260742502] [2024-11-12 20:26:45,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:45,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:26:45,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:45,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:26:45,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:26:45,090 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-12 20:26:45,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 663 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-12 20:26:45,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:45,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-12 20:26:45,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:45,622 INFO L124 PetriNetUnfolderBase]: 2926/5852 cut-off events. [2024-11-12 20:26:45,622 INFO L125 PetriNetUnfolderBase]: For 12701/12726 co-relation queries the response was YES. [2024-11-12 20:26:45,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18203 conditions, 5852 events. 2926/5852 cut-off events. For 12701/12726 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 36757 event pairs, 615 based on Foata normal form. 178/6027 useless extension candidates. Maximal degree in co-relation 15480. Up to 2981 conditions per place. [2024-11-12 20:26:45,647 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 107 selfloop transitions, 6 changer transitions 0/135 dead transitions. [2024-11-12 20:26:45,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 135 transitions, 1215 flow [2024-11-12 20:26:45,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:26:45,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:26:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-12 20:26:45,651 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-12 20:26:45,651 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 663 flow. Second operand 4 states and 116 transitions. [2024-11-12 20:26:45,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 135 transitions, 1215 flow [2024-11-12 20:26:45,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 135 transitions, 1205 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:26:45,672 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 669 flow [2024-11-12 20:26:45,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=669, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-11-12 20:26:45,673 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-11-12 20:26:45,673 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 669 flow [2024-11-12 20:26:45,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-12 20:26:45,673 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:45,673 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:45,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 20:26:45,673 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:26:45,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:45,674 INFO L85 PathProgramCache]: Analyzing trace with hash 436987589, now seen corresponding path program 1 times [2024-11-12 20:26:45,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:45,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278079424] [2024-11-12 20:26:45,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:45,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:45,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:45,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:45,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278079424] [2024-11-12 20:26:45,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278079424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:45,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:45,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:26:45,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658872580] [2024-11-12 20:26:45,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:45,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:26:45,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:45,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:26:45,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:26:45,757 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-12 20:26:45,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 669 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2024-11-12 20:26:45,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:45,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-12 20:26:45,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:46,357 INFO L124 PetriNetUnfolderBase]: 2862/5763 cut-off events. [2024-11-12 20:26:46,357 INFO L125 PetriNetUnfolderBase]: For 14686/14686 co-relation queries the response was YES. [2024-11-12 20:26:46,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18437 conditions, 5763 events. 2862/5763 cut-off events. For 14686/14686 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 36416 event pairs, 455 based on Foata normal form. 104/5862 useless extension candidates. Maximal degree in co-relation 15445. Up to 3054 conditions per place. [2024-11-12 20:26:46,381 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 85 selfloop transitions, 35 changer transitions 0/129 dead transitions. [2024-11-12 20:26:46,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 129 transitions, 1104 flow [2024-11-12 20:26:46,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 20:26:46,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 20:26:46,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-11-12 20:26:46,383 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-11-12 20:26:46,383 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 669 flow. Second operand 7 states and 162 transitions. [2024-11-12 20:26:46,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 129 transitions, 1104 flow [2024-11-12 20:26:46,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 129 transitions, 1080 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-12 20:26:46,405 INFO L231 Difference]: Finished difference. Result has 93 places, 85 transitions, 752 flow [2024-11-12 20:26:46,405 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=752, PETRI_PLACES=93, PETRI_TRANSITIONS=85} [2024-11-12 20:26:46,406 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 47 predicate places. [2024-11-12 20:26:46,406 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 85 transitions, 752 flow [2024-11-12 20:26:46,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2024-11-12 20:26:46,406 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:46,406 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:46,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 20:26:46,407 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:26:46,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:46,407 INFO L85 PathProgramCache]: Analyzing trace with hash -2052643506, now seen corresponding path program 1 times [2024-11-12 20:26:46,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:46,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155423756] [2024-11-12 20:26:46,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:46,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:46,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:46,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:46,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155423756] [2024-11-12 20:26:46,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155423756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:26:46,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:26:46,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 20:26:46,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199296066] [2024-11-12 20:26:46,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:26:46,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 20:26:46,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:46,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 20:26:46,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:26:46,507 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-12 20:26:46,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 85 transitions, 752 flow. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 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) [2024-11-12 20:26:46,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:46,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-12 20:26:46,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:47,234 INFO L124 PetriNetUnfolderBase]: 3126/6310 cut-off events. [2024-11-12 20:26:47,234 INFO L125 PetriNetUnfolderBase]: For 19709/19709 co-relation queries the response was YES. [2024-11-12 20:26:47,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20391 conditions, 6310 events. 3126/6310 cut-off events. For 19709/19709 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 40344 event pairs, 622 based on Foata normal form. 76/6381 useless extension candidates. Maximal degree in co-relation 17363. Up to 3339 conditions per place. [2024-11-12 20:26:47,265 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 132 selfloop transitions, 17 changer transitions 6/164 dead transitions. [2024-11-12 20:26:47,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 164 transitions, 1455 flow [2024-11-12 20:26:47,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 20:26:47,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 20:26:47,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-11-12 20:26:47,269 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-11-12 20:26:47,269 INFO L175 Difference]: Start difference. First operand has 93 places, 85 transitions, 752 flow. Second operand 8 states and 207 transitions. [2024-11-12 20:26:47,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 164 transitions, 1455 flow [2024-11-12 20:26:47,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 164 transitions, 1435 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-12 20:26:47,299 INFO L231 Difference]: Finished difference. Result has 103 places, 90 transitions, 873 flow [2024-11-12 20:26:47,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=873, PETRI_PLACES=103, PETRI_TRANSITIONS=90} [2024-11-12 20:26:47,300 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 57 predicate places. [2024-11-12 20:26:47,300 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 90 transitions, 873 flow [2024-11-12 20:26:47,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 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) [2024-11-12 20:26:47,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:47,300 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:47,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 20:26:47,301 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:26:47,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:47,301 INFO L85 PathProgramCache]: Analyzing trace with hash -6429971, now seen corresponding path program 1 times [2024-11-12 20:26:47,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:47,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516297370] [2024-11-12 20:26:47,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:47,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:47,418 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:47,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:47,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516297370] [2024-11-12 20:26:47,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516297370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:26:47,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201238387] [2024-11-12 20:26:47,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:47,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:26:47,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:26:47,424 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) [2024-11-12 20:26:47,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 20:26:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:47,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 20:26:47,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:26:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:47,564 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:26:47,648 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:47,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201238387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:26:47,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:26:47,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-12 20:26:47,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070132625] [2024-11-12 20:26:47,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:26:47,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 20:26:47,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:47,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 20:26:47,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-12 20:26:47,680 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-12 20:26:47,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 90 transitions, 873 flow. Second operand has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:47,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:47,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-12 20:26:47,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:48,761 INFO L124 PetriNetUnfolderBase]: 3465/7034 cut-off events. [2024-11-12 20:26:48,762 INFO L125 PetriNetUnfolderBase]: For 25302/25302 co-relation queries the response was YES. [2024-11-12 20:26:48,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23112 conditions, 7034 events. 3465/7034 cut-off events. For 25302/25302 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 46595 event pairs, 609 based on Foata normal form. 176/7205 useless extension candidates. Maximal degree in co-relation 20220. Up to 1682 conditions per place. [2024-11-12 20:26:48,812 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 174 selfloop transitions, 58 changer transitions 18/259 dead transitions. [2024-11-12 20:26:48,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 259 transitions, 2200 flow [2024-11-12 20:26:48,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 20:26:48,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-12 20:26:48,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 426 transitions. [2024-11-12 20:26:48,814 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-11-12 20:26:48,814 INFO L175 Difference]: Start difference. First operand has 103 places, 90 transitions, 873 flow. Second operand 18 states and 426 transitions. [2024-11-12 20:26:48,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 259 transitions, 2200 flow [2024-11-12 20:26:48,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 259 transitions, 2178 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-12 20:26:48,861 INFO L231 Difference]: Finished difference. Result has 118 places, 98 transitions, 1115 flow [2024-11-12 20:26:48,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1115, PETRI_PLACES=118, PETRI_TRANSITIONS=98} [2024-11-12 20:26:48,862 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 72 predicate places. [2024-11-12 20:26:48,862 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 98 transitions, 1115 flow [2024-11-12 20:26:48,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:26:48,863 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:48,863 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-11-12 20:26:48,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 20:26:49,067 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,SelfDestructingSolverStorable14 [2024-11-12 20:26:49,068 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:26:49,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:49,069 INFO L85 PathProgramCache]: Analyzing trace with hash -998448409, now seen corresponding path program 2 times [2024-11-12 20:26:49,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:49,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837557879] [2024-11-12 20:26:49,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:49,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:49,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:49,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837557879] [2024-11-12 20:26:49,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837557879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:26:49,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586113605] [2024-11-12 20:26:49,318 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:26:49,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:26:49,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:26:49,320 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) [2024-11-12 20:26:49,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 20:26:49,420 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:26:49,420 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:26:49,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-12 20:26:49,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:26:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:49,491 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:26:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:49,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586113605] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:26:49,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:26:49,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-12 20:26:49,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880157503] [2024-11-12 20:26:49,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:26:49,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-12 20:26:49,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:49,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-12 20:26:49,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-12 20:26:49,661 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-12 20:26:49,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 98 transitions, 1115 flow. Second operand has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 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) [2024-11-12 20:26:49,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:49,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-12 20:26:49,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:51,187 INFO L124 PetriNetUnfolderBase]: 5099/10504 cut-off events. [2024-11-12 20:26:51,187 INFO L125 PetriNetUnfolderBase]: For 45598/45598 co-relation queries the response was YES. [2024-11-12 20:26:51,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36061 conditions, 10504 events. 5099/10504 cut-off events. For 45598/45598 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 64347 event pairs, 929 based on Foata normal form. 208/10707 useless extension candidates. Maximal degree in co-relation 29033. Up to 2336 conditions per place. [2024-11-12 20:26:51,257 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 349 selfloop transitions, 73 changer transitions 0/431 dead transitions. [2024-11-12 20:26:51,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 431 transitions, 4018 flow [2024-11-12 20:26:51,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-12 20:26:51,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-12 20:26:51,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 672 transitions. [2024-11-12 20:26:51,260 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-12 20:26:51,260 INFO L175 Difference]: Start difference. First operand has 118 places, 98 transitions, 1115 flow. Second operand 24 states and 672 transitions. [2024-11-12 20:26:51,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 431 transitions, 4018 flow [2024-11-12 20:26:51,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 431 transitions, 3818 flow, removed 66 selfloop flow, removed 7 redundant places. [2024-11-12 20:26:51,321 INFO L231 Difference]: Finished difference. Result has 138 places, 140 transitions, 1835 flow [2024-11-12 20:26:51,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1835, PETRI_PLACES=138, PETRI_TRANSITIONS=140} [2024-11-12 20:26:51,322 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 92 predicate places. [2024-11-12 20:26:51,322 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 140 transitions, 1835 flow [2024-11-12 20:26:51,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 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) [2024-11-12 20:26:51,323 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:51,323 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:51,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 20:26:51,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-12 20:26:51,524 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:26:51,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:51,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1644919934, now seen corresponding path program 2 times [2024-11-12 20:26:51,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:51,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121567191] [2024-11-12 20:26:51,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:51,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:51,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:51,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121567191] [2024-11-12 20:26:51,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121567191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:26:51,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015961505] [2024-11-12 20:26:51,699 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:26:51,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:26:51,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:26:51,701 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) [2024-11-12 20:26:51,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 20:26:51,798 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:26:51,799 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:26:51,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-12 20:26:51,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:26:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:51,850 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:26:51,943 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:51,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015961505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:26:51,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:26:51,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2024-11-12 20:26:51,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975997144] [2024-11-12 20:26:51,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:26:51,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 20:26:51,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:51,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 20:26:51,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-12 20:26:51,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-12 20:26:51,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 140 transitions, 1835 flow. Second operand has 18 states, 18 states have (on average 17.11111111111111) internal successors, (308), 18 states have internal predecessors, (308), 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) [2024-11-12 20:26:51,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:51,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-12 20:26:51,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:26:53,476 INFO L124 PetriNetUnfolderBase]: 6158/12597 cut-off events. [2024-11-12 20:26:53,476 INFO L125 PetriNetUnfolderBase]: For 62164/62164 co-relation queries the response was YES. [2024-11-12 20:26:53,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43570 conditions, 12597 events. 6158/12597 cut-off events. For 62164/62164 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 80701 event pairs, 735 based on Foata normal form. 72/12664 useless extension candidates. Maximal degree in co-relation 40531. Up to 3367 conditions per place. [2024-11-12 20:26:53,567 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 259 selfloop transitions, 96 changer transitions 0/364 dead transitions. [2024-11-12 20:26:53,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 364 transitions, 3851 flow [2024-11-12 20:26:53,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-12 20:26:53,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-12 20:26:53,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 479 transitions. [2024-11-12 20:26:53,568 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49895833333333334 [2024-11-12 20:26:53,569 INFO L175 Difference]: Start difference. First operand has 138 places, 140 transitions, 1835 flow. Second operand 20 states and 479 transitions. [2024-11-12 20:26:53,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 364 transitions, 3851 flow [2024-11-12 20:26:53,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 364 transitions, 3705 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-11-12 20:26:53,668 INFO L231 Difference]: Finished difference. Result has 155 places, 169 transitions, 2454 flow [2024-11-12 20:26:53,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1722, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2454, PETRI_PLACES=155, PETRI_TRANSITIONS=169} [2024-11-12 20:26:53,669 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 109 predicate places. [2024-11-12 20:26:53,669 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 169 transitions, 2454 flow [2024-11-12 20:26:53,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.11111111111111) internal successors, (308), 18 states have internal predecessors, (308), 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) [2024-11-12 20:26:53,669 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:26:53,670 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:26:53,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-12 20:26:53,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:26:53,871 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-12 20:26:53,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:26:53,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1520658200, now seen corresponding path program 3 times [2024-11-12 20:26:53,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:26:53,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584288347] [2024-11-12 20:26:53,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:26:53,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:26:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:26:54,135 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 52 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:54,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:26:54,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584288347] [2024-11-12 20:26:54,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584288347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:26:54,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079699127] [2024-11-12 20:26:54,136 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 20:26:54,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:26:54,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:26:54,141 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:26:54,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 20:26:54,293 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-12 20:26:54,294 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:26:54,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-12 20:26:54,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:26:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:54,462 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:26:54,694 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:26:54,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079699127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:26:54,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:26:54,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 35 [2024-11-12 20:26:54,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32948848] [2024-11-12 20:26:54,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:26:54,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-12 20:26:54,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:26:54,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-12 20:26:54,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1016, Unknown=0, NotChecked=0, Total=1190 [2024-11-12 20:26:54,804 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-11-12 20:26:54,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 169 transitions, 2454 flow. Second operand has 35 states, 35 states have (on average 14.8) internal successors, (518), 35 states have internal predecessors, (518), 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) [2024-11-12 20:26:54,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:26:54,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-11-12 20:26:54,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:27:00,899 INFO L124 PetriNetUnfolderBase]: 7568/15159 cut-off events. [2024-11-12 20:27:00,899 INFO L125 PetriNetUnfolderBase]: For 70634/70634 co-relation queries the response was YES. [2024-11-12 20:27:00,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51964 conditions, 15159 events. 7568/15159 cut-off events. For 70634/70634 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 110646 event pairs, 163 based on Foata normal form. 416/15573 useless extension candidates. Maximal degree in co-relation 51919. Up to 2807 conditions per place. [2024-11-12 20:27:01,000 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 0 selfloop transitions, 0 changer transitions 1352/1352 dead transitions. [2024-11-12 20:27:01,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 1352 transitions, 12793 flow [2024-11-12 20:27:01,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2024-11-12 20:27:01,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2024-11-12 20:27:01,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 2422 transitions. [2024-11-12 20:27:01,005 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36830900243309 [2024-11-12 20:27:01,005 INFO L175 Difference]: Start difference. First operand has 155 places, 169 transitions, 2454 flow. Second operand 137 states and 2422 transitions. [2024-11-12 20:27:01,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 1352 transitions, 12793 flow [2024-11-12 20:27:01,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 1352 transitions, 12206 flow, removed 93 selfloop flow, removed 25 redundant places. [2024-11-12 20:27:01,121 INFO L231 Difference]: Finished difference. Result has 257 places, 0 transitions, 0 flow [2024-11-12 20:27:01,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=137, PETRI_FLOW=0, PETRI_PLACES=257, PETRI_TRANSITIONS=0} [2024-11-12 20:27:01,121 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 211 predicate places. [2024-11-12 20:27:01,122 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 0 transitions, 0 flow [2024-11-12 20:27:01,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 14.8) internal successors, (518), 35 states have internal predecessors, (518), 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) [2024-11-12 20:27:01,124 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-12 20:27:01,124 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2024-11-12 20:27:01,124 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2024-11-12 20:27:01,124 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2024-11-12 20:27:01,125 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2024-11-12 20:27:01,125 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2024-11-12 20:27:01,125 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2024-11-12 20:27:01,125 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2024-11-12 20:27:01,125 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2024-11-12 20:27:01,125 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2024-11-12 20:27:01,125 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2024-11-12 20:27:01,125 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2024-11-12 20:27:01,125 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2024-11-12 20:27:01,126 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2024-11-12 20:27:01,126 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2024-11-12 20:27:01,126 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2024-11-12 20:27:01,126 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2024-11-12 20:27:01,126 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2024-11-12 20:27:01,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-12 20:27:01,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-12 20:27:01,331 INFO L421 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:27:01,335 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-12 20:27:01,335 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-12 20:27:01,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 08:27:01 BasicIcfg [2024-11-12 20:27:01,340 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-12 20:27:01,340 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 20:27:01,340 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 20:27:01,341 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 20:27:01,341 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:26:37" (3/4) ... [2024-11-12 20:27:01,342 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-12 20:27:01,344 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2024-11-12 20:27:01,346 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2024-11-12 20:27:01,349 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 40 nodes and edges [2024-11-12 20:27:01,350 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-12 20:27:01,350 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-12 20:27:01,350 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-12 20:27:01,420 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-12 20:27:01,423 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-12 20:27:01,423 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 20:27:01,423 INFO L158 Benchmark]: Toolchain (without parser) took 25694.33ms. Allocated memory was 148.9MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 75.8MB in the beginning and 554.5MB in the end (delta: -478.6MB). Peak memory consumption was 750.7MB. Max. memory is 16.1GB. [2024-11-12 20:27:01,424 INFO L158 Benchmark]: CDTParser took 0.95ms. Allocated memory is still 148.9MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:27:01,424 INFO L158 Benchmark]: CACSL2BoogieTranslator took 564.10ms. Allocated memory was 148.9MB in the beginning and 213.9MB in the end (delta: 65.0MB). Free memory was 75.6MB in the beginning and 178.4MB in the end (delta: -102.8MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2024-11-12 20:27:01,424 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.12ms. Allocated memory is still 213.9MB. Free memory was 178.4MB in the beginning and 175.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 20:27:01,424 INFO L158 Benchmark]: Boogie Preprocessor took 62.97ms. Allocated memory is still 213.9MB. Free memory was 175.2MB in the beginning and 172.9MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-12 20:27:01,424 INFO L158 Benchmark]: RCFGBuilder took 667.78ms. Allocated memory is still 213.9MB. Free memory was 171.8MB in the beginning and 131.2MB in the end (delta: 40.6MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-11-12 20:27:01,425 INFO L158 Benchmark]: TraceAbstraction took 24244.66ms. Allocated memory was 213.9MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 131.2MB in the beginning and 559.1MB in the end (delta: -427.9MB). Peak memory consumption was 735.4MB. Max. memory is 16.1GB. [2024-11-12 20:27:01,425 INFO L158 Benchmark]: Witness Printer took 82.65ms. Allocated memory is still 1.4GB. Free memory was 558.0MB in the beginning and 554.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-12 20:27:01,426 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95ms. Allocated memory is still 148.9MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 564.10ms. Allocated memory was 148.9MB in the beginning and 213.9MB in the end (delta: 65.0MB). Free memory was 75.6MB in the beginning and 178.4MB in the end (delta: -102.8MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.12ms. Allocated memory is still 213.9MB. Free memory was 178.4MB in the beginning and 175.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.97ms. Allocated memory is still 213.9MB. Free memory was 175.2MB in the beginning and 172.9MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 667.78ms. Allocated memory is still 213.9MB. Free memory was 171.8MB in the beginning and 131.2MB in the end (delta: 40.6MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * TraceAbstraction took 24244.66ms. Allocated memory was 213.9MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 131.2MB in the beginning and 559.1MB in the end (delta: -427.9MB). Peak memory consumption was 735.4MB. Max. memory is 16.1GB. * Witness Printer took 82.65ms. Allocated memory is still 1.4GB. Free memory was 558.0MB in the beginning and 554.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 81 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 24.1s, OverallIterations: 18, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 18.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2535 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2470 mSDsluCounter, 875 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 864 mSDsCounter, 126 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11971 IncrementalHoareTripleChecker+Invalid, 12097 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 126 mSolverCounterUnsat, 11 mSDtfsCounter, 11971 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 808 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9641 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2454occurred in iteration=17, InterpolantAutomatonStates: 278, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 797 NumberOfCodeBlocks, 797 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1001 ConstructedInterpolants, 0 QuantifiedInterpolants, 2819 SizeOfPredicates, 26 NumberOfNonLiveVariables, 2096 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 31 InterpolantComputations, 13 PerfectInterpolantSequences, 93/624 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-12 20:27:01,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE