./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread.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 e78822126ecf610a8f2b081cd67f0280b0032e707126b95c500c0e8fa18b6e03 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:44:54,911 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:44:54,984 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:44:54,990 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:44:54,991 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:44:55,023 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:44:55,024 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:44:55,024 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:44:55,025 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:44:55,027 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:44:55,027 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:44:55,027 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:44:55,028 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:44:55,028 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:44:55,029 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:44:55,032 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:44:55,032 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:44:55,032 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:44:55,033 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:44:55,033 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:44:55,033 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:44:55,034 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:44:55,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:44:55,034 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:44:55,034 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:44:55,034 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:44:55,035 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:44:55,035 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:44:55,035 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:44:55,035 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:44:55,036 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:44:55,036 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:44:55,036 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:44:55,036 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:44:55,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:44:55,037 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:44:55,037 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:44:55,039 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:44:55,039 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:44:55,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:44:55,040 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:44:55,040 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:44:55,040 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:44:55,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:44:55,041 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e78822126ecf610a8f2b081cd67f0280b0032e707126b95c500c0e8fa18b6e03 [2024-10-14 23:44:55,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:44:55,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:44:55,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:44:55,305 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:44:55,305 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:44:55,307 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread.i [2024-10-14 23:44:56,727 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:44:56,942 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:44:56,943 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread.i [2024-10-14 23:44:56,960 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d129ce64/42855f42c3ae4fd7abb81358da4c8844/FLAG742d02b54 [2024-10-14 23:44:56,973 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d129ce64/42855f42c3ae4fd7abb81358da4c8844 [2024-10-14 23:44:56,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:44:56,977 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:44:56,979 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:44:56,980 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:44:56,985 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:44:56,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:56" (1/1) ... [2024-10-14 23:44:56,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75498567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:56, skipping insertion in model container [2024-10-14 23:44:56,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:56" (1/1) ... [2024-10-14 23:44:57,048 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:44:57,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:44:57,414 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:44:57,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:44:57,517 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:44:57,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57 WrapperNode [2024-10-14 23:44:57,520 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:44:57,521 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:44:57,522 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:44:57,522 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:44:57,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,539 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,563 INFO L138 Inliner]: procedures = 164, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 99 [2024-10-14 23:44:57,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:44:57,567 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:44:57,567 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:44:57,567 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:44:57,575 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,579 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,598 INFO L175 MemorySlicer]: Split 15 memory accesses to 3 slices as follows [2, 5, 8]. 53 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 6]. The 1 writes are split as follows [0, 0, 1]. [2024-10-14 23:44:57,599 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,599 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,604 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,607 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,608 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,609 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,612 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:44:57,613 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:44:57,613 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:44:57,613 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:44:57,614 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:44:57,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:44:57,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 23:44:57,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 23:44:57,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 23:44:57,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 23:44:57,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 23:44:57,696 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-14 23:44:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-14 23:44:57,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 23:44:57,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 23:44:57,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 23:44:57,697 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 23:44:57,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:44:57,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 23:44:57,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 23:44:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 23:44:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 23:44:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:44:57,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:44:57,700 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 23:44:57,844 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:44:57,846 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:44:58,053 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:44:58,053 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:44:58,209 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:44:58,209 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-14 23:44:58,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:58 BoogieIcfgContainer [2024-10-14 23:44:58,210 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:44:58,213 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:44:58,213 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:44:58,218 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:44:58,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:44:56" (1/3) ... [2024-10-14 23:44:58,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d14e871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:58, skipping insertion in model container [2024-10-14 23:44:58,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (2/3) ... [2024-10-14 23:44:58,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d14e871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:58, skipping insertion in model container [2024-10-14 23:44:58,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:58" (3/3) ... [2024-10-14 23:44:58,222 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym-pthread.i [2024-10-14 23:44:58,236 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:44:58,237 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-14 23:44:58,237 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:44:58,272 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:44:58,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 33 transitions, 70 flow [2024-10-14 23:44:58,345 INFO L124 PetriNetUnfolderBase]: 3/35 cut-off events. [2024-10-14 23:44:58,345 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:44:58,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 35 events. 3/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-10-14 23:44:58,348 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 33 transitions, 70 flow [2024-10-14 23:44:58,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 33 transitions, 70 flow [2024-10-14 23:44:58,365 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:44:58,374 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;@5500efc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:44:58,374 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-10-14 23:44:58,378 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:44:58,378 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-14 23:44:58,378 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:44:58,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:44:58,379 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 23:44:58,383 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:44:58,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:44:58,389 INFO L85 PathProgramCache]: Analyzing trace with hash 302535, now seen corresponding path program 1 times [2024-10-14 23:44:58,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:44:58,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029673231] [2024-10-14 23:44:58,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:58,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:44:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:58,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:44:58,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:44:58,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029673231] [2024-10-14 23:44:58,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029673231] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:44:58,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:44:58,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:44:58,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288130842] [2024-10-14 23:44:58,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:44:58,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:44:58,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:44:58,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:44:58,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:44:58,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-14 23:44:58,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:44:58,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:44:58,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-14 23:44:58,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:44:58,916 INFO L124 PetriNetUnfolderBase]: 24/88 cut-off events. [2024-10-14 23:44:58,917 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:44:58,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 88 events. 24/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 185 event pairs, 20 based on Foata normal form. 4/81 useless extension candidates. Maximal degree in co-relation 127. Up to 64 conditions per place. [2024-10-14 23:44:58,920 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 19 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2024-10-14 23:44:58,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 114 flow [2024-10-14 23:44:58,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:44:58,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:44:58,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-10-14 23:44:58,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2024-10-14 23:44:58,936 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 70 flow. Second operand 4 states and 71 transitions. [2024-10-14 23:44:58,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 114 flow [2024-10-14 23:44:58,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 114 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:44:58,940 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 90 flow [2024-10-14 23:44:58,942 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2024-10-14 23:44:58,947 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2024-10-14 23:44:58,949 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 90 flow [2024-10-14 23:44:58,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:44:58,950 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:44:58,950 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-14 23:44:58,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 23:44:58,951 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:44:58,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:44:58,952 INFO L85 PathProgramCache]: Analyzing trace with hash 423187167, now seen corresponding path program 1 times [2024-10-14 23:44:58,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:44:58,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606213339] [2024-10-14 23:44:58,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:58,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:44:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:44:59,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:44:59,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606213339] [2024-10-14 23:44:59,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606213339] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:44:59,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79089472] [2024-10-14 23:44:59,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:59,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:44:59,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:44:59,099 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:44:59,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 23:44:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:59,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:44:59,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:44:59,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:44:59,244 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:44:59,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79089472] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:44:59,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:44:59,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-14 23:44:59,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454023829] [2024-10-14 23:44:59,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:44:59,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:44:59,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:44:59,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:44:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:44:59,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-14 23:44:59,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 90 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 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) [2024-10-14 23:44:59,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:44:59,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-14 23:44:59,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:44:59,358 INFO L124 PetriNetUnfolderBase]: 24/87 cut-off events. [2024-10-14 23:44:59,359 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 23:44:59,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 87 events. 24/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 20 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 150. Up to 59 conditions per place. [2024-10-14 23:44:59,361 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 15 selfloop transitions, 6 changer transitions 0/32 dead transitions. [2024-10-14 23:44:59,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 128 flow [2024-10-14 23:44:59,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:44:59,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:44:59,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-10-14 23:44:59,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-10-14 23:44:59,365 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 90 flow. Second operand 6 states and 88 transitions. [2024-10-14 23:44:59,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 128 flow [2024-10-14 23:44:59,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:44:59,368 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 96 flow [2024-10-14 23:44:59,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-10-14 23:44:59,369 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-10-14 23:44:59,369 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 96 flow [2024-10-14 23:44:59,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 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) [2024-10-14 23:44:59,369 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:44:59,370 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-14 23:44:59,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 23:44:59,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:44:59,571 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:44:59,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:44:59,571 INFO L85 PathProgramCache]: Analyzing trace with hash 233900593, now seen corresponding path program 1 times [2024-10-14 23:44:59,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:44:59,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156992180] [2024-10-14 23:44:59,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:59,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:44:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:59,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:44:59,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:44:59,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156992180] [2024-10-14 23:44:59,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156992180] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:44:59,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:44:59,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:44:59,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376698625] [2024-10-14 23:44:59,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:44:59,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:44:59,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:44:59,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:44:59,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:44:59,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-14 23:44:59,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:44:59,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:44:59,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-14 23:44:59,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:44:59,684 INFO L124 PetriNetUnfolderBase]: 24/86 cut-off events. [2024-10-14 23:44:59,684 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 23:44:59,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 86 events. 24/86 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 20 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 146. Up to 62 conditions per place. [2024-10-14 23:44:59,686 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 16 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2024-10-14 23:44:59,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 132 flow [2024-10-14 23:44:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:44:59,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:44:59,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-10-14 23:44:59,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2024-10-14 23:44:59,687 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 96 flow. Second operand 3 states and 52 transitions. [2024-10-14 23:44:59,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 132 flow [2024-10-14 23:44:59,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 110 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-14 23:44:59,689 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 78 flow [2024-10-14 23:44:59,689 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2024-10-14 23:44:59,690 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-10-14 23:44:59,690 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 78 flow [2024-10-14 23:44:59,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:44:59,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:44:59,690 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:44:59,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 23:44:59,691 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:44:59,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:44:59,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1441491304, now seen corresponding path program 1 times [2024-10-14 23:44:59,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:44:59,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707158474] [2024-10-14 23:44:59,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:59,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:44:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:44:59,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:44:59,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707158474] [2024-10-14 23:44:59,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707158474] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:44:59,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189720771] [2024-10-14 23:44:59,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:59,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:44:59,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:44:59,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:44:59,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 23:44:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:59,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:44:59,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:44:59,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:44:59,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:44:59,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:44:59,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189720771] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:44:59,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:44:59,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-14 23:44:59,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835438338] [2024-10-14 23:44:59,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:44:59,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 23:44:59,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:44:59,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 23:44:59,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 23:44:59,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-14 23:44:59,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 78 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:44:59,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:44:59,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-14 23:44:59,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:00,080 INFO L124 PetriNetUnfolderBase]: 24/90 cut-off events. [2024-10-14 23:45:00,083 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-14 23:45:00,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 90 events. 24/90 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 182 event pairs, 20 based on Foata normal form. 2/83 useless extension candidates. Maximal degree in co-relation 139. Up to 60 conditions per place. [2024-10-14 23:45:00,084 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 16 selfloop transitions, 7 changer transitions 0/34 dead transitions. [2024-10-14 23:45:00,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 139 flow [2024-10-14 23:45:00,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:45:00,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:45:00,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-10-14 23:45:00,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-10-14 23:45:00,086 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 78 flow. Second operand 7 states and 102 transitions. [2024-10-14 23:45:00,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 139 flow [2024-10-14 23:45:00,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 125 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:00,088 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 104 flow [2024-10-14 23:45:00,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=104, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-10-14 23:45:00,093 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2024-10-14 23:45:00,093 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 104 flow [2024-10-14 23:45:00,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:00,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:00,094 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:00,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 23:45:00,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-14 23:45:00,295 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:45:00,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:00,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1254322792, now seen corresponding path program 2 times [2024-10-14 23:45:00,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:00,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102903647] [2024-10-14 23:45:00,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:00,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:00,391 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 23:45:00,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:00,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102903647] [2024-10-14 23:45:00,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102903647] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:00,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:00,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:00,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422917665] [2024-10-14 23:45:00,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:00,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:00,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:00,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:00,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:00,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-14 23:45:00,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:00,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:00,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-14 23:45:00,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:00,449 INFO L124 PetriNetUnfolderBase]: 26/97 cut-off events. [2024-10-14 23:45:00,450 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-14 23:45:00,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 97 events. 26/97 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 199 event pairs, 2 based on Foata normal form. 3/97 useless extension candidates. Maximal degree in co-relation 153. Up to 53 conditions per place. [2024-10-14 23:45:00,451 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 24 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-10-14 23:45:00,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 158 flow [2024-10-14 23:45:00,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:00,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:00,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-10-14 23:45:00,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-10-14 23:45:00,452 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 104 flow. Second operand 3 states and 55 transitions. [2024-10-14 23:45:00,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 158 flow [2024-10-14 23:45:00,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:00,457 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 102 flow [2024-10-14 23:45:00,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-10-14 23:45:00,458 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-10-14 23:45:00,458 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 102 flow [2024-10-14 23:45:00,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:00,458 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:00,459 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-10-14 23:45:00,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 23:45:00,459 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:45:00,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:00,459 INFO L85 PathProgramCache]: Analyzing trace with hash 229275648, now seen corresponding path program 1 times [2024-10-14 23:45:00,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:00,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818241800] [2024-10-14 23:45:00,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:00,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:45:00,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:00,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818241800] [2024-10-14 23:45:00,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818241800] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:45:00,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774322004] [2024-10-14 23:45:00,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:00,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:00,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:45:00,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:45:00,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 23:45:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:00,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 23:45:00,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:45:00,696 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:45:00,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:45:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:45:00,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774322004] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:45:00,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:45:00,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-14 23:45:00,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752401914] [2024-10-14 23:45:00,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:45:00,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 23:45:00,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:00,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 23:45:00,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-14 23:45:00,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-14 23:45:00,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 102 flow. Second operand has 15 states, 15 states have (on average 12.333333333333334) internal successors, (185), 15 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:00,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:00,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-14 23:45:00,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:00,977 INFO L124 PetriNetUnfolderBase]: 24/98 cut-off events. [2024-10-14 23:45:00,977 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-14 23:45:00,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 98 events. 24/98 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 175 event pairs, 20 based on Foata normal form. 3/93 useless extension candidates. Maximal degree in co-relation 146. Up to 60 conditions per place. [2024-10-14 23:45:00,978 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 16 selfloop transitions, 13 changer transitions 0/39 dead transitions. [2024-10-14 23:45:00,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 196 flow [2024-10-14 23:45:00,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 23:45:00,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 23:45:00,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 175 transitions. [2024-10-14 23:45:00,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40792540792540793 [2024-10-14 23:45:00,981 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 102 flow. Second operand 13 states and 175 transitions. [2024-10-14 23:45:00,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 196 flow [2024-10-14 23:45:00,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 39 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:00,985 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 175 flow [2024-10-14 23:45:00,986 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=175, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2024-10-14 23:45:00,987 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2024-10-14 23:45:00,987 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 175 flow [2024-10-14 23:45:00,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.333333333333334) internal successors, (185), 15 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:00,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:00,988 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1] [2024-10-14 23:45:01,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 23:45:01,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:01,193 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:45:01,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:01,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1450152680, now seen corresponding path program 2 times [2024-10-14 23:45:01,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:01,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725299257] [2024-10-14 23:45:01,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:01,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:45:01,228 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 23:45:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:45:01,264 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 23:45:01,264 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 23:45:01,265 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-10-14 23:45:01,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-10-14 23:45:01,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-10-14 23:45:01,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-10-14 23:45:01,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-10-14 23:45:01,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-10-14 23:45:01,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-10-14 23:45:01,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-10-14 23:45:01,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-10-14 23:45:01,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-10-14 23:45:01,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-10-14 23:45:01,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 23:45:01,269 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-10-14 23:45:01,272 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 23:45:01,272 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 23:45:01,298 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:45:01,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 55 transitions, 120 flow [2024-10-14 23:45:01,338 INFO L124 PetriNetUnfolderBase]: 5/60 cut-off events. [2024-10-14 23:45:01,338 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 23:45:01,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 60 events. 5/60 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 113 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 45. Up to 3 conditions per place. [2024-10-14 23:45:01,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 55 transitions, 120 flow [2024-10-14 23:45:01,341 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 55 transitions, 120 flow [2024-10-14 23:45:01,342 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:45:01,343 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;@5500efc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:45:01,346 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-10-14 23:45:01,348 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:45:01,348 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-14 23:45:01,348 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:45:01,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:01,348 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 23:45:01,348 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-14 23:45:01,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:01,349 INFO L85 PathProgramCache]: Analyzing trace with hash 357150, now seen corresponding path program 1 times [2024-10-14 23:45:01,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:01,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993914291] [2024-10-14 23:45:01,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:01,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:01,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:45:01,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:01,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993914291] [2024-10-14 23:45:01,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993914291] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:01,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:01,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:01,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550831826] [2024-10-14 23:45:01,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:01,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:45:01,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:01,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:45:01,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:45:01,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-14 23:45:01,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:01,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:01,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-14 23:45:01,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:01,613 INFO L124 PetriNetUnfolderBase]: 640/1334 cut-off events. [2024-10-14 23:45:01,613 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-10-14 23:45:01,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2417 conditions, 1334 events. 640/1334 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7514 event pairs, 570 based on Foata normal form. 70/1293 useless extension candidates. Maximal degree in co-relation 1594. Up to 1043 conditions per place. [2024-10-14 23:45:01,626 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 31 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-10-14 23:45:01,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 186 flow [2024-10-14 23:45:01,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:45:01,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:45:01,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-10-14 23:45:01,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-10-14 23:45:01,629 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 120 flow. Second operand 4 states and 120 transitions. [2024-10-14 23:45:01,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 186 flow [2024-10-14 23:45:01,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 186 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:45:01,632 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 138 flow [2024-10-14 23:45:01,633 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-10-14 23:45:01,634 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2024-10-14 23:45:01,635 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 138 flow [2024-10-14 23:45:01,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:01,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:01,635 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-14 23:45:01,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 23:45:01,635 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-14 23:45:01,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:01,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2050277247, now seen corresponding path program 1 times [2024-10-14 23:45:01,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:01,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114888409] [2024-10-14 23:45:01,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:01,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:01,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:45:01,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:01,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114888409] [2024-10-14 23:45:01,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114888409] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:45:01,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958111714] [2024-10-14 23:45:01,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:01,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:01,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:45:01,696 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:45:01,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 23:45:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:01,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:45:01,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:45:01,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:45:01,785 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:45:01,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958111714] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:01,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:45:01,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-14 23:45:01,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296963112] [2024-10-14 23:45:01,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:01,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:45:01,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:01,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:45:01,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:45:01,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-14 23:45:01,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:01,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:01,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-14 23:45:01,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:02,000 INFO L124 PetriNetUnfolderBase]: 640/1333 cut-off events. [2024-10-14 23:45:02,001 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-10-14 23:45:02,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2427 conditions, 1333 events. 640/1333 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7536 event pairs, 570 based on Foata normal form. 1/1223 useless extension candidates. Maximal degree in co-relation 2408. Up to 1038 conditions per place. [2024-10-14 23:45:02,010 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 27 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2024-10-14 23:45:02,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 200 flow [2024-10-14 23:45:02,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:45:02,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:45:02,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-10-14 23:45:02,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-10-14 23:45:02,012 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 138 flow. Second operand 6 states and 154 transitions. [2024-10-14 23:45:02,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 200 flow [2024-10-14 23:45:02,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 53 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:45:02,014 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 144 flow [2024-10-14 23:45:02,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2024-10-14 23:45:02,015 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-10-14 23:45:02,015 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 144 flow [2024-10-14 23:45:02,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:02,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:02,015 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-14 23:45:02,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 23:45:02,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:02,216 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-14 23:45:02,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:02,217 INFO L85 PathProgramCache]: Analyzing trace with hash -865914424, now seen corresponding path program 1 times [2024-10-14 23:45:02,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:02,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631433891] [2024-10-14 23:45:02,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:02,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:45:02,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:02,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631433891] [2024-10-14 23:45:02,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631433891] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:02,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:02,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:02,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290718332] [2024-10-14 23:45:02,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:02,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:02,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:02,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:02,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:02,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-14 23:45:02,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:02,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:02,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-14 23:45:02,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:02,400 INFO L124 PetriNetUnfolderBase]: 640/1332 cut-off events. [2024-10-14 23:45:02,400 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-14 23:45:02,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2429 conditions, 1332 events. 640/1332 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7547 event pairs, 570 based on Foata normal form. 1/1223 useless extension candidates. Maximal degree in co-relation 2404. Up to 1041 conditions per place. [2024-10-14 23:45:02,410 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 28 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2024-10-14 23:45:02,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 52 transitions, 204 flow [2024-10-14 23:45:02,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:02,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:02,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-10-14 23:45:02,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5515151515151515 [2024-10-14 23:45:02,412 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 144 flow. Second operand 3 states and 91 transitions. [2024-10-14 23:45:02,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 52 transitions, 204 flow [2024-10-14 23:45:02,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 182 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-14 23:45:02,415 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 126 flow [2024-10-14 23:45:02,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-10-14 23:45:02,416 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-10-14 23:45:02,416 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 126 flow [2024-10-14 23:45:02,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:02,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:02,416 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:02,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 23:45:02,417 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-14 23:45:02,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:02,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1081237396, now seen corresponding path program 1 times [2024-10-14 23:45:02,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:02,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483071365] [2024-10-14 23:45:02,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:02,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:02,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:45:02,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:02,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483071365] [2024-10-14 23:45:02,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483071365] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:45:02,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100060716] [2024-10-14 23:45:02,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:02,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:02,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:45:02,481 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:45:02,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 23:45:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:02,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:45:02,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:45:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:45:02,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:45:02,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:45:02,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100060716] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:45:02,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:45:02,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-14 23:45:02,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679447018] [2024-10-14 23:45:02,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:45:02,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 23:45:02,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:02,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 23:45:02,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 23:45:02,624 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-14 23:45:02,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 126 flow. Second operand has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:02,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:02,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-14 23:45:02,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:02,865 INFO L124 PetriNetUnfolderBase]: 640/1336 cut-off events. [2024-10-14 23:45:02,865 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-10-14 23:45:02,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2432 conditions, 1336 events. 640/1336 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7525 event pairs, 570 based on Foata normal form. 2/1229 useless extension candidates. Maximal degree in co-relation 2397. Up to 1039 conditions per place. [2024-10-14 23:45:02,875 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 28 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-10-14 23:45:02,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 211 flow [2024-10-14 23:45:02,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:45:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:45:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-10-14 23:45:02,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4597402597402597 [2024-10-14 23:45:02,878 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 126 flow. Second operand 7 states and 177 transitions. [2024-10-14 23:45:02,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 211 flow [2024-10-14 23:45:02,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:02,879 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 152 flow [2024-10-14 23:45:02,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=152, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-10-14 23:45:02,881 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-10-14 23:45:02,881 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 152 flow [2024-10-14 23:45:02,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:02,882 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:02,882 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:02,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 23:45:03,082 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,SelfDestructingSolverStorable10 [2024-10-14 23:45:03,083 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-14 23:45:03,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:03,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1750020084, now seen corresponding path program 2 times [2024-10-14 23:45:03,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:03,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555581221] [2024-10-14 23:45:03,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:03,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:03,143 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 23:45:03,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:03,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555581221] [2024-10-14 23:45:03,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555581221] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:03,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:03,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:03,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77701102] [2024-10-14 23:45:03,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:03,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:03,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:03,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:03,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:03,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-14 23:45:03,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:03,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:03,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-14 23:45:03,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:03,333 INFO L124 PetriNetUnfolderBase]: 698/1432 cut-off events. [2024-10-14 23:45:03,334 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-10-14 23:45:03,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 1432 events. 698/1432 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8011 event pairs, 291 based on Foata normal form. 36/1390 useless extension candidates. Maximal degree in co-relation 2592. Up to 976 conditions per place. [2024-10-14 23:45:03,341 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 48 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-10-14 23:45:03,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 68 transitions, 283 flow [2024-10-14 23:45:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:03,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:03,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-10-14 23:45:03,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6424242424242425 [2024-10-14 23:45:03,343 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 152 flow. Second operand 3 states and 106 transitions. [2024-10-14 23:45:03,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 68 transitions, 283 flow [2024-10-14 23:45:03,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 279 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:03,347 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 150 flow [2024-10-14 23:45:03,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-10-14 23:45:03,348 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-10-14 23:45:03,349 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 150 flow [2024-10-14 23:45:03,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:03,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:03,349 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:03,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 23:45:03,349 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-14 23:45:03,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:03,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1583951849, now seen corresponding path program 1 times [2024-10-14 23:45:03,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:03,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507038336] [2024-10-14 23:45:03,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:03,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 23:45:03,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:03,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507038336] [2024-10-14 23:45:03,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507038336] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:03,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:03,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:03,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433494065] [2024-10-14 23:45:03,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:03,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:03,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:03,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:03,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:03,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-14 23:45:03,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:03,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:03,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-14 23:45:03,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:03,570 INFO L124 PetriNetUnfolderBase]: 640/1326 cut-off events. [2024-10-14 23:45:03,570 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-10-14 23:45:03,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2500 conditions, 1326 events. 640/1326 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7250 event pairs, 264 based on Foata normal form. 36/1290 useless extension candidates. Maximal degree in co-relation 2461. Up to 882 conditions per place. [2024-10-14 23:45:03,578 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 47 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-10-14 23:45:03,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 67 transitions, 279 flow [2024-10-14 23:45:03,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:03,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:03,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-10-14 23:45:03,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-10-14 23:45:03,580 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 150 flow. Second operand 3 states and 105 transitions. [2024-10-14 23:45:03,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 67 transitions, 279 flow [2024-10-14 23:45:03,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 67 transitions, 275 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:03,581 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 148 flow [2024-10-14 23:45:03,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-10-14 23:45:03,582 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2024-10-14 23:45:03,582 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 148 flow [2024-10-14 23:45:03,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:03,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:03,583 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:03,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 23:45:03,583 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-14 23:45:03,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:03,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1803873116, now seen corresponding path program 1 times [2024-10-14 23:45:03,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:03,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531378762] [2024-10-14 23:45:03,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:03,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-14 23:45:03,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:03,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531378762] [2024-10-14 23:45:03,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531378762] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:03,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:03,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:03,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073663239] [2024-10-14 23:45:03,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:03,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:03,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:03,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:03,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:03,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-14 23:45:03,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:03,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:03,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-14 23:45:03,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:03,813 INFO L124 PetriNetUnfolderBase]: 695/1416 cut-off events. [2024-10-14 23:45:03,813 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-10-14 23:45:03,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2684 conditions, 1416 events. 695/1416 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7819 event pairs, 102 based on Foata normal form. 33/1401 useless extension candidates. Maximal degree in co-relation 2645. Up to 913 conditions per place. [2024-10-14 23:45:03,820 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 47 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2024-10-14 23:45:03,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 274 flow [2024-10-14 23:45:03,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:03,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-10-14 23:45:03,822 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-10-14 23:45:03,822 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 148 flow. Second operand 3 states and 105 transitions. [2024-10-14 23:45:03,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 274 flow [2024-10-14 23:45:03,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 65 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:03,825 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 146 flow [2024-10-14 23:45:03,825 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-10-14 23:45:03,826 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2024-10-14 23:45:03,827 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 146 flow [2024-10-14 23:45:03,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:03,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:03,827 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-10-14 23:45:03,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 23:45:03,827 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-14 23:45:03,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:03,828 INFO L85 PathProgramCache]: Analyzing trace with hash -85516912, now seen corresponding path program 1 times [2024-10-14 23:45:03,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:03,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226904997] [2024-10-14 23:45:03,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:03,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 23:45:03,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:03,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226904997] [2024-10-14 23:45:03,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226904997] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:45:03,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769902437] [2024-10-14 23:45:03,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:03,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:03,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:45:03,963 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:45:03,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 23:45:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:04,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 23:45:04,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:45:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 23:45:04,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:45:04,148 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 23:45:04,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769902437] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:45:04,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:45:04,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-14 23:45:04,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512290115] [2024-10-14 23:45:04,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:45:04,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 23:45:04,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:04,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 23:45:04,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-14 23:45:04,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-14 23:45:04,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 146 flow. Second operand has 15 states, 15 states have (on average 21.4) internal successors, (321), 15 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:04,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:04,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-14 23:45:04,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:04,449 INFO L124 PetriNetUnfolderBase]: 640/1331 cut-off events. [2024-10-14 23:45:04,450 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-10-14 23:45:04,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2517 conditions, 1331 events. 640/1331 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7403 event pairs, 570 based on Foata normal form. 3/1239 useless extension candidates. Maximal degree in co-relation 2451. Up to 1039 conditions per place. [2024-10-14 23:45:04,458 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 28 selfloop transitions, 13 changer transitions 0/58 dead transitions. [2024-10-14 23:45:04,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 58 transitions, 264 flow [2024-10-14 23:45:04,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 23:45:04,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 23:45:04,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 304 transitions. [2024-10-14 23:45:04,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4251748251748252 [2024-10-14 23:45:04,461 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 146 flow. Second operand 13 states and 304 transitions. [2024-10-14 23:45:04,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 58 transitions, 264 flow [2024-10-14 23:45:04,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 58 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:04,463 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 219 flow [2024-10-14 23:45:04,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=219, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2024-10-14 23:45:04,464 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2024-10-14 23:45:04,465 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 219 flow [2024-10-14 23:45:04,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 21.4) internal successors, (321), 15 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:04,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:04,465 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 3, 2, 1, 1, 1, 1, 1] [2024-10-14 23:45:04,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-14 23:45:04,666 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,SelfDestructingSolverStorable14 [2024-10-14 23:45:04,666 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-14 23:45:04,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:04,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1711516783, now seen corresponding path program 2 times [2024-10-14 23:45:04,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:04,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277468133] [2024-10-14 23:45:04,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:04,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:45:04,692 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 23:45:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:45:04,732 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 23:45:04,735 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 23:45:04,735 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-10-14 23:45:04,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2024-10-14 23:45:04,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2024-10-14 23:45:04,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2024-10-14 23:45:04,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2024-10-14 23:45:04,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2024-10-14 23:45:04,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2024-10-14 23:45:04,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2024-10-14 23:45:04,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2024-10-14 23:45:04,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2024-10-14 23:45:04,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2024-10-14 23:45:04,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2024-10-14 23:45:04,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2024-10-14 23:45:04,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2024-10-14 23:45:04,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2024-10-14 23:45:04,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 23:45:04,738 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2024-10-14 23:45:04,739 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 23:45:04,739 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-14 23:45:04,772 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:45:04,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 77 transitions, 172 flow [2024-10-14 23:45:04,781 INFO L124 PetriNetUnfolderBase]: 7/85 cut-off events. [2024-10-14 23:45:04,781 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 23:45:04,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 85 events. 7/85 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 208 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2024-10-14 23:45:04,782 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 77 transitions, 172 flow [2024-10-14 23:45:04,782 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 77 transitions, 172 flow [2024-10-14 23:45:04,783 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:45:04,784 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;@5500efc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:45:04,784 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-10-14 23:45:04,785 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:45:04,785 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-14 23:45:04,785 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:45:04,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:04,785 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 23:45:04,785 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-14 23:45:04,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:04,786 INFO L85 PathProgramCache]: Analyzing trace with hash 433611, now seen corresponding path program 1 times [2024-10-14 23:45:04,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:04,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750139187] [2024-10-14 23:45:04,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:04,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:04,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:45:04,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:04,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750139187] [2024-10-14 23:45:04,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750139187] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:04,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:04,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:04,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697219012] [2024-10-14 23:45:04,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:04,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:45:04,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:04,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:45:04,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:45:04,841 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-14 23:45:04,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:04,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:04,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-14 23:45:04,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:06,513 INFO L124 PetriNetUnfolderBase]: 11409/19193 cut-off events. [2024-10-14 23:45:06,513 INFO L125 PetriNetUnfolderBase]: For 799/799 co-relation queries the response was YES. [2024-10-14 23:45:06,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35523 conditions, 19193 events. 11409/19193 cut-off events. For 799/799 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146550 event pairs, 10250 based on Foata normal form. 1159/19041 useless extension candidates. Maximal degree in co-relation 15025. Up to 15805 conditions per place. [2024-10-14 23:45:06,645 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 43 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-10-14 23:45:06,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 75 transitions, 260 flow [2024-10-14 23:45:06,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:45:06,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:45:06,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-10-14 23:45:06,648 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5487012987012987 [2024-10-14 23:45:06,648 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 172 flow. Second operand 4 states and 169 transitions. [2024-10-14 23:45:06,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 75 transitions, 260 flow [2024-10-14 23:45:06,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 258 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-14 23:45:06,654 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 186 flow [2024-10-14 23:45:06,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-10-14 23:45:06,655 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-10-14 23:45:06,655 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 186 flow [2024-10-14 23:45:06,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:06,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:06,655 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-14 23:45:06,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 23:45:06,656 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-14 23:45:06,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:06,656 INFO L85 PathProgramCache]: Analyzing trace with hash 33236063, now seen corresponding path program 1 times [2024-10-14 23:45:06,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:06,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868980763] [2024-10-14 23:45:06,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:06,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:06,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:45:06,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:06,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868980763] [2024-10-14 23:45:06,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868980763] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:45:06,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838396473] [2024-10-14 23:45:06,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:06,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:06,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:45:06,743 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:45:06,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 23:45:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:06,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:45:06,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:45:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:45:06,844 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:45:06,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838396473] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:06,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:45:06,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-14 23:45:06,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122537629] [2024-10-14 23:45:06,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:06,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:45:06,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:06,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:45:06,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:45:06,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-14 23:45:06,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:06,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:06,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-14 23:45:06,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:08,533 INFO L124 PetriNetUnfolderBase]: 11409/19192 cut-off events. [2024-10-14 23:45:08,533 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2024-10-14 23:45:08,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35412 conditions, 19192 events. 11409/19192 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146540 event pairs, 10250 based on Foata normal form. 1/17882 useless extension candidates. Maximal degree in co-relation 35392. Up to 15800 conditions per place. [2024-10-14 23:45:08,666 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 39 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2024-10-14 23:45:08,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 74 transitions, 272 flow [2024-10-14 23:45:08,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:45:08,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:45:08,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 220 transitions. [2024-10-14 23:45:08,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-10-14 23:45:08,668 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 186 flow. Second operand 6 states and 220 transitions. [2024-10-14 23:45:08,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 74 transitions, 272 flow [2024-10-14 23:45:08,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 74 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:45:08,671 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 192 flow [2024-10-14 23:45:08,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-10-14 23:45:08,671 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2024-10-14 23:45:08,672 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 192 flow [2024-10-14 23:45:08,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:08,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:08,672 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-14 23:45:08,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 23:45:08,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:08,874 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-14 23:45:08,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:08,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1030318389, now seen corresponding path program 1 times [2024-10-14 23:45:08,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:08,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25593092] [2024-10-14 23:45:08,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:08,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:45:08,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:08,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25593092] [2024-10-14 23:45:08,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25593092] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:08,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:08,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:08,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592669417] [2024-10-14 23:45:08,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:08,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:08,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:08,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:08,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:08,912 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-14 23:45:08,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:08,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:08,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-14 23:45:08,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:10,238 INFO L124 PetriNetUnfolderBase]: 11409/19191 cut-off events. [2024-10-14 23:45:10,239 INFO L125 PetriNetUnfolderBase]: For 447/447 co-relation queries the response was YES. [2024-10-14 23:45:10,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35414 conditions, 19191 events. 11409/19191 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146566 event pairs, 10250 based on Foata normal form. 1/17882 useless extension candidates. Maximal degree in co-relation 35388. Up to 15803 conditions per place. [2024-10-14 23:45:10,350 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 40 selfloop transitions, 4 changer transitions 0/73 dead transitions. [2024-10-14 23:45:10,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 73 transitions, 276 flow [2024-10-14 23:45:10,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:10,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:10,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-10-14 23:45:10,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5627705627705628 [2024-10-14 23:45:10,352 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 192 flow. Second operand 3 states and 130 transitions. [2024-10-14 23:45:10,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 73 transitions, 276 flow [2024-10-14 23:45:10,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 254 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-14 23:45:10,354 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 174 flow [2024-10-14 23:45:10,355 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2024-10-14 23:45:10,355 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2024-10-14 23:45:10,355 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 174 flow [2024-10-14 23:45:10,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:10,356 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:10,356 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:10,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-14 23:45:10,356 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-14 23:45:10,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:10,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2000107466, now seen corresponding path program 1 times [2024-10-14 23:45:10,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:10,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286283817] [2024-10-14 23:45:10,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:10,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:45:10,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:10,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286283817] [2024-10-14 23:45:10,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286283817] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:45:10,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658329486] [2024-10-14 23:45:10,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:10,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:10,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:45:10,418 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:45:10,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 23:45:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:10,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:45:10,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:45:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:45:10,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:45:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:45:10,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658329486] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:45:10,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:45:10,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-14 23:45:10,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303147971] [2024-10-14 23:45:10,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:45:10,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 23:45:10,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:10,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 23:45:10,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 23:45:10,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-14 23:45:10,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 174 flow. Second operand has 10 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:10,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:10,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-14 23:45:10,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:12,116 INFO L124 PetriNetUnfolderBase]: 11409/19195 cut-off events. [2024-10-14 23:45:12,117 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-10-14 23:45:12,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35417 conditions, 19195 events. 11409/19195 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146625 event pairs, 10250 based on Foata normal form. 2/17888 useless extension candidates. Maximal degree in co-relation 35381. Up to 15801 conditions per place. [2024-10-14 23:45:12,234 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 40 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2024-10-14 23:45:12,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 76 transitions, 283 flow [2024-10-14 23:45:12,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:45:12,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:45:12,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 252 transitions. [2024-10-14 23:45:12,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2024-10-14 23:45:12,237 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 174 flow. Second operand 7 states and 252 transitions. [2024-10-14 23:45:12,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 76 transitions, 283 flow [2024-10-14 23:45:12,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 76 transitions, 269 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:12,239 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 200 flow [2024-10-14 23:45:12,239 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-10-14 23:45:12,240 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 8 predicate places. [2024-10-14 23:45:12,240 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 200 flow [2024-10-14 23:45:12,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:12,240 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:12,240 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:12,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 23:45:12,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:12,441 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-14 23:45:12,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:12,442 INFO L85 PathProgramCache]: Analyzing trace with hash -132993098, now seen corresponding path program 2 times [2024-10-14 23:45:12,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:12,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467266219] [2024-10-14 23:45:12,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:12,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:12,503 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 23:45:12,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:12,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467266219] [2024-10-14 23:45:12,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467266219] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:12,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:12,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:12,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252866898] [2024-10-14 23:45:12,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:12,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:12,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:12,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:12,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:12,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-14 23:45:12,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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) [2024-10-14 23:45:12,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:12,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-14 23:45:12,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:13,800 INFO L124 PetriNetUnfolderBase]: 12446/20635 cut-off events. [2024-10-14 23:45:13,801 INFO L125 PetriNetUnfolderBase]: For 463/463 co-relation queries the response was YES. [2024-10-14 23:45:13,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38336 conditions, 20635 events. 12446/20635 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 158626 event pairs, 1538 based on Foata normal form. 399/20377 useless extension candidates. Maximal degree in co-relation 38295. Up to 14759 conditions per place. [2024-10-14 23:45:13,881 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 72 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-10-14 23:45:13,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 101 transitions, 408 flow [2024-10-14 23:45:13,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:13,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:13,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2024-10-14 23:45:13,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6796536796536796 [2024-10-14 23:45:13,882 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 200 flow. Second operand 3 states and 157 transitions. [2024-10-14 23:45:13,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 101 transitions, 408 flow [2024-10-14 23:45:13,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 101 transitions, 404 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:13,885 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 198 flow [2024-10-14 23:45:13,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2024-10-14 23:45:13,886 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2024-10-14 23:45:13,886 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 198 flow [2024-10-14 23:45:13,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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) [2024-10-14 23:45:13,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:13,886 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:13,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-14 23:45:13,887 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-14 23:45:13,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:13,887 INFO L85 PathProgramCache]: Analyzing trace with hash 172181730, now seen corresponding path program 1 times [2024-10-14 23:45:13,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:13,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435381964] [2024-10-14 23:45:13,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:13,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:13,941 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 23:45:13,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:13,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435381964] [2024-10-14 23:45:13,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435381964] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:13,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:13,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:13,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897353106] [2024-10-14 23:45:13,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:13,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:13,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:13,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:13,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:13,950 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-14 23:45:13,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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) [2024-10-14 23:45:13,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:13,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-14 23:45:13,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:15,493 INFO L124 PetriNetUnfolderBase]: 11409/19199 cut-off events. [2024-10-14 23:45:15,494 INFO L125 PetriNetUnfolderBase]: For 1221/1221 co-relation queries the response was YES. [2024-10-14 23:45:15,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36225 conditions, 19199 events. 11409/19199 cut-off events. For 1221/1221 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 148235 event pairs, 1538 based on Foata normal form. 399/18956 useless extension candidates. Maximal degree in co-relation 36185. Up to 13323 conditions per place. [2024-10-14 23:45:15,623 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 71 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2024-10-14 23:45:15,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 100 transitions, 404 flow [2024-10-14 23:45:15,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:15,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:15,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-10-14 23:45:15,624 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6753246753246753 [2024-10-14 23:45:15,624 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 198 flow. Second operand 3 states and 156 transitions. [2024-10-14 23:45:15,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 100 transitions, 404 flow [2024-10-14 23:45:15,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 100 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:15,628 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 196 flow [2024-10-14 23:45:15,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-10-14 23:45:15,628 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2024-10-14 23:45:15,629 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 196 flow [2024-10-14 23:45:15,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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) [2024-10-14 23:45:15,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:15,629 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:15,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-14 23:45:15,629 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-14 23:45:15,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:15,630 INFO L85 PathProgramCache]: Analyzing trace with hash -2081627036, now seen corresponding path program 1 times [2024-10-14 23:45:15,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:15,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302069112] [2024-10-14 23:45:15,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:15,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:45:15,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:15,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302069112] [2024-10-14 23:45:15,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302069112] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:45:15,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434109135] [2024-10-14 23:45:15,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:15,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:15,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:45:15,733 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:45:15,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 23:45:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:15,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 23:45:15,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:45:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:45:15,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:45:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:45:15,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434109135] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:45:15,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:45:15,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-14 23:45:15,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944744338] [2024-10-14 23:45:15,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:45:15,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 23:45:15,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:15,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 23:45:15,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-14 23:45:15,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-14 23:45:15,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 196 flow. Second operand has 15 states, 15 states have (on average 30.466666666666665) internal successors, (457), 15 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:15,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:15,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-14 23:45:15,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:17,324 INFO L124 PetriNetUnfolderBase]: 11409/19208 cut-off events. [2024-10-14 23:45:17,325 INFO L125 PetriNetUnfolderBase]: For 1264/1264 co-relation queries the response was YES. [2024-10-14 23:45:17,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36252 conditions, 19208 events. 11409/19208 cut-off events. For 1264/1264 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146578 event pairs, 10250 based on Foata normal form. 3/17902 useless extension candidates. Maximal degree in co-relation 36185. Up to 15801 conditions per place. [2024-10-14 23:45:17,410 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 40 selfloop transitions, 13 changer transitions 0/80 dead transitions. [2024-10-14 23:45:17,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 80 transitions, 338 flow [2024-10-14 23:45:17,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 23:45:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 23:45:17,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 433 transitions. [2024-10-14 23:45:17,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4325674325674326 [2024-10-14 23:45:17,412 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 196 flow. Second operand 13 states and 433 transitions. [2024-10-14 23:45:17,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 80 transitions, 338 flow [2024-10-14 23:45:17,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 80 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:17,415 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 269 flow [2024-10-14 23:45:17,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=269, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-10-14 23:45:17,416 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 19 predicate places. [2024-10-14 23:45:17,416 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 269 flow [2024-10-14 23:45:17,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 30.466666666666665) internal successors, (457), 15 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:17,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:17,416 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:17,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-14 23:45:17,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:17,617 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-14 23:45:17,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:17,618 INFO L85 PathProgramCache]: Analyzing trace with hash -468022576, now seen corresponding path program 2 times [2024-10-14 23:45:17,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:17,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939285332] [2024-10-14 23:45:17,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:17,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-14 23:45:17,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:17,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939285332] [2024-10-14 23:45:17,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939285332] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:17,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:17,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:17,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803331620] [2024-10-14 23:45:17,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:17,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:17,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:17,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:17,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:17,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-14 23:45:17,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:17,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:17,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-14 23:45:17,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:19,411 INFO L124 PetriNetUnfolderBase]: 12443/20454 cut-off events. [2024-10-14 23:45:19,412 INFO L125 PetriNetUnfolderBase]: For 504/504 co-relation queries the response was YES. [2024-10-14 23:45:19,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38186 conditions, 20454 events. 12443/20454 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 151700 event pairs, 3941 based on Foata normal form. 396/19986 useless extension candidates. Maximal degree in co-relation 38099. Up to 14696 conditions per place. [2024-10-14 23:45:19,495 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 77 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2024-10-14 23:45:19,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 104 transitions, 480 flow [2024-10-14 23:45:19,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:19,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:19,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-10-14 23:45:19,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6753246753246753 [2024-10-14 23:45:19,497 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 269 flow. Second operand 3 states and 156 transitions. [2024-10-14 23:45:19,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 104 transitions, 480 flow [2024-10-14 23:45:19,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 104 transitions, 470 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-14 23:45:19,499 INFO L231 Difference]: Finished difference. Result has 93 places, 79 transitions, 261 flow [2024-10-14 23:45:19,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=93, PETRI_TRANSITIONS=79} [2024-10-14 23:45:19,500 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 16 predicate places. [2024-10-14 23:45:19,500 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 261 flow [2024-10-14 23:45:19,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:19,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:19,500 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:19,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-14 23:45:19,501 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-14 23:45:19,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:19,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1623797475, now seen corresponding path program 1 times [2024-10-14 23:45:19,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:19,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55732150] [2024-10-14 23:45:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:19,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-14 23:45:19,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:19,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55732150] [2024-10-14 23:45:19,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55732150] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:19,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:19,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:19,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866191447] [2024-10-14 23:45:19,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:19,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:19,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:19,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:19,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:19,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-14 23:45:19,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:19,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:19,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-14 23:45:19,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:20,888 INFO L124 PetriNetUnfolderBase]: 11409/18892 cut-off events. [2024-10-14 23:45:20,889 INFO L125 PetriNetUnfolderBase]: For 1252/1252 co-relation queries the response was YES. [2024-10-14 23:45:20,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35949 conditions, 18892 events. 11409/18892 cut-off events. For 1252/1252 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 139055 event pairs, 3644 based on Foata normal form. 396/18475 useless extension candidates. Maximal degree in co-relation 35866. Up to 13266 conditions per place. [2024-10-14 23:45:20,960 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 76 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2024-10-14 23:45:20,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 103 transitions, 470 flow [2024-10-14 23:45:20,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:20,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-10-14 23:45:20,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.670995670995671 [2024-10-14 23:45:20,961 INFO L175 Difference]: Start difference. First operand has 93 places, 79 transitions, 261 flow. Second operand 3 states and 155 transitions. [2024-10-14 23:45:20,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 103 transitions, 470 flow [2024-10-14 23:45:20,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 103 transitions, 466 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:20,965 INFO L231 Difference]: Finished difference. Result has 92 places, 78 transitions, 259 flow [2024-10-14 23:45:20,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=92, PETRI_TRANSITIONS=78} [2024-10-14 23:45:20,966 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2024-10-14 23:45:20,966 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 78 transitions, 259 flow [2024-10-14 23:45:20,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:20,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:20,966 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:20,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-14 23:45:20,967 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-14 23:45:20,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:20,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1460830165, now seen corresponding path program 1 times [2024-10-14 23:45:20,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:20,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881432983] [2024-10-14 23:45:20,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:20,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-14 23:45:21,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:21,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881432983] [2024-10-14 23:45:21,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881432983] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:21,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:21,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:21,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558453456] [2024-10-14 23:45:21,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:21,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:21,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:21,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:21,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:21,049 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-14 23:45:21,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 78 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:21,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:21,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-14 23:45:21,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:22,764 INFO L124 PetriNetUnfolderBase]: 12377/20389 cut-off events. [2024-10-14 23:45:22,764 INFO L125 PetriNetUnfolderBase]: For 1348/1348 co-relation queries the response was YES. [2024-10-14 23:45:22,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38843 conditions, 20389 events. 12377/20389 cut-off events. For 1348/1348 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 152589 event pairs, 2132 based on Foata normal form. 363/20146 useless extension candidates. Maximal degree in co-relation 38760. Up to 13673 conditions per place. [2024-10-14 23:45:22,866 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 76 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-10-14 23:45:22,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 101 transitions, 465 flow [2024-10-14 23:45:22,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:22,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:22,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-10-14 23:45:22,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.670995670995671 [2024-10-14 23:45:22,868 INFO L175 Difference]: Start difference. First operand has 92 places, 78 transitions, 259 flow. Second operand 3 states and 155 transitions. [2024-10-14 23:45:22,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 101 transitions, 465 flow [2024-10-14 23:45:22,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 101 transitions, 457 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:22,871 INFO L231 Difference]: Finished difference. Result has 91 places, 77 transitions, 257 flow [2024-10-14 23:45:22,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=257, PETRI_PLACES=91, PETRI_TRANSITIONS=77} [2024-10-14 23:45:22,872 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 14 predicate places. [2024-10-14 23:45:22,872 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 77 transitions, 257 flow [2024-10-14 23:45:22,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:22,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:22,872 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 4, 3, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:22,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-14 23:45:22,873 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-14 23:45:22,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:22,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1958880075, now seen corresponding path program 1 times [2024-10-14 23:45:22,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:22,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131180769] [2024-10-14 23:45:22,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:22,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:45:22,890 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 23:45:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:45:22,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 23:45:22,907 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 23:45:22,907 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2024-10-14 23:45:22,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2024-10-14 23:45:22,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2024-10-14 23:45:22,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2024-10-14 23:45:22,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2024-10-14 23:45:22,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2024-10-14 23:45:22,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2024-10-14 23:45:22,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2024-10-14 23:45:22,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2024-10-14 23:45:22,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2024-10-14 23:45:22,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2024-10-14 23:45:22,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2024-10-14 23:45:22,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2024-10-14 23:45:22,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2024-10-14 23:45:22,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2024-10-14 23:45:22,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2024-10-14 23:45:22,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2024-10-14 23:45:22,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2024-10-14 23:45:22,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2024-10-14 23:45:22,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-14 23:45:22,910 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:22,911 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 23:45:22,911 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-14 23:45:22,944 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:45:22,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 226 flow [2024-10-14 23:45:22,953 INFO L124 PetriNetUnfolderBase]: 9/110 cut-off events. [2024-10-14 23:45:22,954 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 23:45:22,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 110 events. 9/110 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 314 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 93. Up to 5 conditions per place. [2024-10-14 23:45:22,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 99 transitions, 226 flow [2024-10-14 23:45:22,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 99 transitions, 226 flow [2024-10-14 23:45:22,956 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:45:22,957 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;@5500efc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:45:22,957 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-14 23:45:22,958 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:45:22,958 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-14 23:45:22,958 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:45:22,958 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:22,958 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 23:45:22,958 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-14 23:45:22,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:22,959 INFO L85 PathProgramCache]: Analyzing trace with hash 531918, now seen corresponding path program 1 times [2024-10-14 23:45:22,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:22,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34342453] [2024-10-14 23:45:22,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:22,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:45:22,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:22,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34342453] [2024-10-14 23:45:22,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34342453] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:22,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:22,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:22,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965295871] [2024-10-14 23:45:22,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:22,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:45:22,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:22,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:45:22,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:45:22,992 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 99 [2024-10-14 23:45:22,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 99 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:22,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:22,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 99 [2024-10-14 23:45:22,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand