./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.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.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 98246e94f9eda6f7b3e0bc779400b495c6030c5dbda65475908661a0361d920c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:44:56,084 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:44:56,121 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:44:56,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:44:56,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:44:56,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:44:56,139 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:44:56,140 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:44:56,140 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:44:56,140 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:44:56,141 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:44:56,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:44:56,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:44:56,142 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:44:56,142 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:44:56,142 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:44:56,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:44:56,143 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:44:56,143 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:44:56,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:44:56,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:44:56,144 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:44:56,145 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:44:56,145 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:44:56,145 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:44:56,146 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:44:56,146 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:44:56,146 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:44:56,146 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:44:56,147 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:44:56,147 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:44:56,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:44:56,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:44:56,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:44:56,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:44:56,148 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:44:56,148 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:44:56,148 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:44:56,149 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:44:56,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:44:56,149 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:44:56,150 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:44:56,150 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:44:56,150 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:44:56,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98246e94f9eda6f7b3e0bc779400b495c6030c5dbda65475908661a0361d920c [2024-10-14 23:44:56,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:44:56,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:44:56,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:44:56,350 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:44:56,350 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:44:56,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2024-10-14 23:44:57,848 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:44:58,033 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:44:58,033 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2024-10-14 23:44:58,043 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dab3ee56e/9b492675b8e846ab9036e5fc5de6ee8c/FLAG50aa623b8 [2024-10-14 23:44:58,053 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dab3ee56e/9b492675b8e846ab9036e5fc5de6ee8c [2024-10-14 23:44:58,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:44:58,056 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:44:58,057 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:44:58,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:44:58,062 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:44:58,062 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:58" (1/1) ... [2024-10-14 23:44:58,063 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14781832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:58, skipping insertion in model container [2024-10-14 23:44:58,064 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:58" (1/1) ... [2024-10-14 23:44:58,097 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:44:58,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:44:58,526 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:44:58,552 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:44:58,577 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:44:58,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:58 WrapperNode [2024-10-14 23:44:58,578 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:44:58,578 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:44:58,579 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:44:58,579 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:44:58,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:58" (1/1) ... [2024-10-14 23:44:58,596 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:58" (1/1) ... [2024-10-14 23:44:58,617 INFO L138 Inliner]: procedures = 170, calls = 25, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 109 [2024-10-14 23:44:58,620 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:44:58,621 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:44:58,621 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:44:58,621 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:44:58,628 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:58" (1/1) ... [2024-10-14 23:44:58,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:58" (1/1) ... [2024-10-14 23:44:58,633 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:58" (1/1) ... [2024-10-14 23:44:58,643 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 1 writes are split as follows [0, 1]. [2024-10-14 23:44:58,643 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:58" (1/1) ... [2024-10-14 23:44:58,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:58" (1/1) ... [2024-10-14 23:44:58,651 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:58" (1/1) ... [2024-10-14 23:44:58,653 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:58" (1/1) ... [2024-10-14 23:44:58,654 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:58" (1/1) ... [2024-10-14 23:44:58,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:58" (1/1) ... [2024-10-14 23:44:58,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:44:58,657 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:44:58,657 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:44:58,658 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:44:58,658 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:58" (1/1) ... [2024-10-14 23:44:58,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:44:58,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:44:58,682 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 23:44:58,683 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 23:44:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 23:44:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 23:44:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-14 23:44:58,720 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-14 23:44:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 23:44:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 23:44:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:44:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 23:44:58,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 23:44:58,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:44:58,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:44:58,722 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 23:44:58,817 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:44:58,818 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:44:58,964 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:44:58,964 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:44:59,051 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:44:59,051 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-14 23:44:59,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:59 BoogieIcfgContainer [2024-10-14 23:44:59,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:44:59,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:44:59,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:44:59,064 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:44:59,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:44:58" (1/3) ... [2024-10-14 23:44:59,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5229b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:59, skipping insertion in model container [2024-10-14 23:44:59,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:58" (2/3) ... [2024-10-14 23:44:59,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5229b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:59, skipping insertion in model container [2024-10-14 23:44:59,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:59" (3/3) ... [2024-10-14 23:44:59,066 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym.i [2024-10-14 23:44:59,096 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:44:59,097 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-14 23:44:59,097 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:44:59,149 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:44:59,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 32 transitions, 68 flow [2024-10-14 23:44:59,247 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2024-10-14 23:44:59,247 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:44:59,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 34 events. 3/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 47 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-10-14 23:44:59,258 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 32 transitions, 68 flow [2024-10-14 23:44:59,265 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 32 transitions, 68 flow [2024-10-14 23:44:59,284 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:44:59,296 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;@42147347, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:44:59,296 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-10-14 23:44:59,307 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:44:59,307 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-14 23:44:59,307 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:44:59,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:44:59,308 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 23:44:59,308 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 23:44:59,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:44:59,321 INFO L85 PathProgramCache]: Analyzing trace with hash 361754, now seen corresponding path program 1 times [2024-10-14 23:44:59,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:44:59,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941783221] [2024-10-14 23:44:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:59,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:44:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:59,605 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 23:44:59,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:44:59,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941783221] [2024-10-14 23:44:59,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941783221] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:44:59,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:44:59,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:44:59,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104233468] [2024-10-14 23:44:59,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:44:59,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:44:59,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:44:59,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:44:59,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:44:59,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-14 23:44:59,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 68 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 23:44:59,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:44:59,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-14 23:44:59,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:44:59,739 INFO L124 PetriNetUnfolderBase]: 22/83 cut-off events. [2024-10-14 23:44:59,740 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:44:59,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 83 events. 22/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 177 event pairs, 18 based on Foata normal form. 4/76 useless extension candidates. Maximal degree in co-relation 117. Up to 59 conditions per place. [2024-10-14 23:44:59,744 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 18 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-10-14 23:44:59,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 110 flow [2024-10-14 23:44:59,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:44:59,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:44:59,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-10-14 23:44:59,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-10-14 23:44:59,754 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 68 flow. Second operand 4 states and 70 transitions. [2024-10-14 23:44:59,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 110 flow [2024-10-14 23:44:59,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 110 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:44:59,761 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 88 flow [2024-10-14 23:44:59,762 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2024-10-14 23:44:59,765 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-10-14 23:44:59,765 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 88 flow [2024-10-14 23:44:59,765 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 23:44:59,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:44:59,766 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-14 23:44:59,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 23:44:59,766 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 23:44:59,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:44:59,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2107551706, now seen corresponding path program 1 times [2024-10-14 23:44:59,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:44:59,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449386565] [2024-10-14 23:44:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:59,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:44:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:59,880 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 23:44:59,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:44:59,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449386565] [2024-10-14 23:44:59,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449386565] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:44:59,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088069849] [2024-10-14 23:44:59,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:59,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:44:59,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:44:59,885 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 23:44:59,887 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 23:44:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:59,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:44:59,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:44:59,987 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 23:44:59,987 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:44:59,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088069849] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:44:59,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:44:59,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-14 23:44:59,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088301514] [2024-10-14 23:44:59,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:44:59,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:44:59,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:44:59,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:44:59,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:44:59,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-14 23:44:59,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 88 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 23:44:59,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:44:59,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-14 23:44:59,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:00,059 INFO L124 PetriNetUnfolderBase]: 22/82 cut-off events. [2024-10-14 23:45:00,060 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 23:45:00,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 82 events. 22/82 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 177 event pairs, 18 based on Foata normal form. 1/72 useless extension candidates. Maximal degree in co-relation 140. Up to 54 conditions per place. [2024-10-14 23:45:00,061 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 14 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2024-10-14 23:45:00,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 31 transitions, 124 flow [2024-10-14 23:45:00,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:45:00,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:45:00,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-10-14 23:45:00,062 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-10-14 23:45:00,062 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 88 flow. Second operand 6 states and 87 transitions. [2024-10-14 23:45:00,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 31 transitions, 124 flow [2024-10-14 23:45:00,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 31 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:45:00,064 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 94 flow [2024-10-14 23:45:00,064 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-10-14 23:45:00,064 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-10-14 23:45:00,064 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 94 flow [2024-10-14 23:45:00,065 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 23:45:00,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:00,065 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-14 23:45:00,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 23:45:00,265 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 23:45:00,267 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 23:45:00,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:00,268 INFO L85 PathProgramCache]: Analyzing trace with hash -909593107, now seen corresponding path program 1 times [2024-10-14 23:45:00,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:00,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827844365] [2024-10-14 23:45:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:00,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:00,308 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 23:45:00,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:00,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827844365] [2024-10-14 23:45:00,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827844365] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:00,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:00,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:00,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042585200] [2024-10-14 23:45:00,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:00,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:00,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:00,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:00,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:00,313 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-14 23:45:00,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 94 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 23:45:00,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:00,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-14 23:45:00,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:00,345 INFO L124 PetriNetUnfolderBase]: 22/81 cut-off events. [2024-10-14 23:45:00,345 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 23:45:00,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 81 events. 22/81 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 177 event pairs, 18 based on Foata normal form. 1/72 useless extension candidates. Maximal degree in co-relation 136. Up to 57 conditions per place. [2024-10-14 23:45:00,346 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 15 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2024-10-14 23:45:00,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 128 flow [2024-10-14 23:45:00,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:00,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:00,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-10-14 23:45:00,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-10-14 23:45:00,348 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 94 flow. Second operand 3 states and 51 transitions. [2024-10-14 23:45:00,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 128 flow [2024-10-14 23:45:00,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 106 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-14 23:45:00,349 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 76 flow [2024-10-14 23:45:00,349 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2024-10-14 23:45:00,350 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2024-10-14 23:45:00,350 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 76 flow [2024-10-14 23:45:00,350 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 23:45:00,350 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:00,350 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:00,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 23:45:00,351 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:45:00,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:00,351 INFO L85 PathProgramCache]: Analyzing trace with hash 2055396482, now seen corresponding path program 1 times [2024-10-14 23:45:00,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:00,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752856922] [2024-10-14 23:45:00,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:00,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:00,400 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 23:45:00,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:00,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752856922] [2024-10-14 23:45:00,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752856922] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:45:00,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116097396] [2024-10-14 23:45:00,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:00,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:00,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:45:00,403 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 23:45:00,404 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 23:45:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:00,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:45:00,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:45:00,472 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 23:45:00,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:45:00,550 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 23:45:00,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116097396] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:45:00,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:45:00,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-14 23:45:00,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846626720] [2024-10-14 23:45:00,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:45:00,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 23:45:00,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:00,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 23:45:00,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 23:45:00,587 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-14 23:45:00,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 76 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 23:45:00,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:00,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-14 23:45:00,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:00,739 INFO L124 PetriNetUnfolderBase]: 22/85 cut-off events. [2024-10-14 23:45:00,739 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-14 23:45:00,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 85 events. 22/85 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 174 event pairs, 18 based on Foata normal form. 2/78 useless extension candidates. Maximal degree in co-relation 129. Up to 55 conditions per place. [2024-10-14 23:45:00,740 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 15 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2024-10-14 23:45:00,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 33 transitions, 135 flow [2024-10-14 23:45:00,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:45:00,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:45:00,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2024-10-14 23:45:00,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45089285714285715 [2024-10-14 23:45:00,742 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 76 flow. Second operand 7 states and 101 transitions. [2024-10-14 23:45:00,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 33 transitions, 135 flow [2024-10-14 23:45:00,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 121 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:00,743 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 102 flow [2024-10-14 23:45:00,743 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=102, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-10-14 23:45:00,744 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2024-10-14 23:45:00,744 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 102 flow [2024-10-14 23:45:00,744 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 23:45:00,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:00,745 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:00,760 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 23:45:00,949 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 23:45:00,950 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:45:00,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:00,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1016008962, now seen corresponding path program 2 times [2024-10-14 23:45:00,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:00,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224387313] [2024-10-14 23:45:00,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:00,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:01,041 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 23:45:01,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:01,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224387313] [2024-10-14 23:45:01,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224387313] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:01,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:01,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:01,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955838612] [2024-10-14 23:45:01,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:01,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:01,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:01,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:01,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:01,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-14 23:45:01,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 102 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 23:45:01,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:01,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-14 23:45:01,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:01,151 INFO L124 PetriNetUnfolderBase]: 24/92 cut-off events. [2024-10-14 23:45:01,152 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-14 23:45:01,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 92 events. 24/92 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 190 event pairs, 2 based on Foata normal form. 3/92 useless extension candidates. Maximal degree in co-relation 143. Up to 48 conditions per place. [2024-10-14 23:45:01,153 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 23 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2024-10-14 23:45:01,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 154 flow [2024-10-14 23:45:01,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:01,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:01,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-10-14 23:45:01,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-10-14 23:45:01,158 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 102 flow. Second operand 3 states and 54 transitions. [2024-10-14 23:45:01,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 154 flow [2024-10-14 23:45:01,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 150 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:01,159 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 100 flow [2024-10-14 23:45:01,160 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2024-10-14 23:45:01,160 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-10-14 23:45:01,160 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 100 flow [2024-10-14 23:45:01,161 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 23:45:01,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:01,161 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-10-14 23:45:01,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 23:45:01,165 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 23:45:01,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:01,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1431501901, now seen corresponding path program 1 times [2024-10-14 23:45:01,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:01,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154518491] [2024-10-14 23:45:01,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:01,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:01,291 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 23:45:01,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:01,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154518491] [2024-10-14 23:45:01,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154518491] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:45:01,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589269692] [2024-10-14 23:45:01,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:01,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:01,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:45:01,296 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 23:45:01,297 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 23:45:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:01,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 23:45:01,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:45:01,412 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 23:45:01,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:45:01,484 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 23:45:01,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589269692] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:45:01,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:45:01,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-14 23:45:01,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009174115] [2024-10-14 23:45:01,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:45:01,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 23:45:01,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:01,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 23:45:01,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-14 23:45:01,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-14 23:45:01,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 100 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 23:45:01,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:01,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-14 23:45:01,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:01,621 INFO L124 PetriNetUnfolderBase]: 22/98 cut-off events. [2024-10-14 23:45:01,622 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-14 23:45:01,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 98 events. 22/98 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 177 event pairs, 18 based on Foata normal form. 3/95 useless extension candidates. Maximal degree in co-relation 141. Up to 55 conditions per place. [2024-10-14 23:45:01,623 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 15 selfloop transitions, 13 changer transitions 0/38 dead transitions. [2024-10-14 23:45:01,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 38 transitions, 192 flow [2024-10-14 23:45:01,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 23:45:01,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 23:45:01,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 174 transitions. [2024-10-14 23:45:01,624 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4182692307692308 [2024-10-14 23:45:01,624 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 100 flow. Second operand 13 states and 174 transitions. [2024-10-14 23:45:01,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 38 transitions, 192 flow [2024-10-14 23:45:01,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 38 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:01,626 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 173 flow [2024-10-14 23:45:01,626 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=173, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2024-10-14 23:45:01,627 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2024-10-14 23:45:01,627 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 173 flow [2024-10-14 23:45:01,627 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 23:45:01,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:01,627 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1] [2024-10-14 23:45:01,643 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 23:45:01,828 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 23:45:01,829 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 23:45:01,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:01,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1110238911, now seen corresponding path program 2 times [2024-10-14 23:45:01,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:01,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131076613] [2024-10-14 23:45:01,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:01,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:45:01,846 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 23:45:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:45:01,869 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 23:45:01,869 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 23:45:01,870 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-10-14 23:45:01,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-10-14 23:45:01,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-10-14 23:45:01,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-10-14 23:45:01,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-10-14 23:45:01,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-10-14 23:45:01,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-10-14 23:45:01,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-10-14 23:45:01,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-10-14 23:45:01,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-10-14 23:45:01,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-10-14 23:45:01,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 23:45:01,873 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-10-14 23:45:01,875 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 23:45:01,875 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 23:45:01,891 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:45:01,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 53 transitions, 116 flow [2024-10-14 23:45:01,897 INFO L124 PetriNetUnfolderBase]: 5/58 cut-off events. [2024-10-14 23:45:01,897 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 23:45:01,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 58 events. 5/58 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2024-10-14 23:45:01,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 53 transitions, 116 flow [2024-10-14 23:45:01,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 53 transitions, 116 flow [2024-10-14 23:45:01,899 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:45:01,900 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;@42147347, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:45:01,900 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-10-14 23:45:01,901 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:45:01,901 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-14 23:45:01,901 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:45:01,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:01,901 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 23:45:01,902 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 23:45:01,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:01,902 INFO L85 PathProgramCache]: Analyzing trace with hash 414383, now seen corresponding path program 1 times [2024-10-14 23:45:01,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:01,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432094091] [2024-10-14 23:45:01,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:01,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:01,922 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 23:45:01,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:01,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432094091] [2024-10-14 23:45:01,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432094091] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:01,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:01,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:01,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470980553] [2024-10-14 23:45:01,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:01,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:45:01,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:01,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:45:01,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:45:01,931 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-10-14 23:45:01,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 116 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 23:45:01,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:01,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-10-14 23:45:01,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:02,066 INFO L124 PetriNetUnfolderBase]: 532/1167 cut-off events. [2024-10-14 23:45:02,067 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-10-14 23:45:02,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2073 conditions, 1167 events. 532/1167 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6668 event pairs, 468 based on Foata normal form. 64/1123 useless extension candidates. Maximal degree in co-relation 1303. Up to 869 conditions per place. [2024-10-14 23:45:02,072 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 29 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2024-10-14 23:45:02,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 178 flow [2024-10-14 23:45:02,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:45:02,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:45:02,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-10-14 23:45:02,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5566037735849056 [2024-10-14 23:45:02,073 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 116 flow. Second operand 4 states and 118 transitions. [2024-10-14 23:45:02,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 178 flow [2024-10-14 23:45:02,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:45:02,074 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 134 flow [2024-10-14 23:45:02,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-10-14 23:45:02,075 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2024-10-14 23:45:02,075 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 134 flow [2024-10-14 23:45:02,075 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 23:45:02,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:02,075 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-14 23:45:02,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 23:45:02,076 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 23:45:02,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:02,076 INFO L85 PathProgramCache]: Analyzing trace with hash -539628538, now seen corresponding path program 1 times [2024-10-14 23:45:02,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:02,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702469304] [2024-10-14 23:45:02,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:02,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:02,109 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 23:45:02,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:02,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702469304] [2024-10-14 23:45:02,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702469304] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:45:02,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936813970] [2024-10-14 23:45:02,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:02,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:02,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:45:02,112 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 23:45:02,119 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 23:45:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:02,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:45:02,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:45:02,189 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 23:45:02,190 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:45:02,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936813970] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:02,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:45:02,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-14 23:45:02,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299547986] [2024-10-14 23:45:02,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:02,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:45:02,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:02,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:45:02,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:45:02,199 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-10-14 23:45:02,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 134 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 23:45:02,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:02,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-10-14 23:45:02,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:02,319 INFO L124 PetriNetUnfolderBase]: 532/1166 cut-off events. [2024-10-14 23:45:02,319 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-10-14 23:45:02,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2083 conditions, 1166 events. 532/1166 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6641 event pairs, 468 based on Foata normal form. 1/1059 useless extension candidates. Maximal degree in co-relation 2064. Up to 864 conditions per place. [2024-10-14 23:45:02,325 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 25 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2024-10-14 23:45:02,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 192 flow [2024-10-14 23:45:02,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:45:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:45:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-10-14 23:45:02,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4779874213836478 [2024-10-14 23:45:02,326 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 134 flow. Second operand 6 states and 152 transitions. [2024-10-14 23:45:02,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 192 flow [2024-10-14 23:45:02,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 51 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:45:02,327 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 140 flow [2024-10-14 23:45:02,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-10-14 23:45:02,328 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2024-10-14 23:45:02,328 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 140 flow [2024-10-14 23:45:02,328 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 23:45:02,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:02,329 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-14 23:45:02,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 23:45:02,529 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 23:45:02,530 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 23:45:02,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:02,530 INFO L85 PathProgramCache]: Analyzing trace with hash 451384898, now seen corresponding path program 1 times [2024-10-14 23:45:02,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:02,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354981833] [2024-10-14 23:45:02,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:02,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:02,548 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 23:45:02,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:02,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354981833] [2024-10-14 23:45:02,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354981833] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:02,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:02,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:02,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36615664] [2024-10-14 23:45:02,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:02,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:02,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:02,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:02,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:02,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-10-14 23:45:02,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 140 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 23:45:02,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:02,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-10-14 23:45:02,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:02,680 INFO L124 PetriNetUnfolderBase]: 532/1165 cut-off events. [2024-10-14 23:45:02,680 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-10-14 23:45:02,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2085 conditions, 1165 events. 532/1165 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6647 event pairs, 468 based on Foata normal form. 1/1059 useless extension candidates. Maximal degree in co-relation 2060. Up to 867 conditions per place. [2024-10-14 23:45:02,692 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 26 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-10-14 23:45:02,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 50 transitions, 196 flow [2024-10-14 23:45:02,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:02,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:02,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-10-14 23:45:02,698 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.559748427672956 [2024-10-14 23:45:02,698 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 140 flow. Second operand 3 states and 89 transitions. [2024-10-14 23:45:02,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 50 transitions, 196 flow [2024-10-14 23:45:02,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 174 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-14 23:45:02,699 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 122 flow [2024-10-14 23:45:02,699 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-10-14 23:45:02,700 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2024-10-14 23:45:02,700 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 122 flow [2024-10-14 23:45:02,700 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 23:45:02,700 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:02,700 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:02,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 23:45:02,700 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-14 23:45:02,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:02,701 INFO L85 PathProgramCache]: Analyzing trace with hash -9744437, now seen corresponding path program 1 times [2024-10-14 23:45:02,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:02,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560124350] [2024-10-14 23:45:02,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:02,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:02,794 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 23:45:02,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:02,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560124350] [2024-10-14 23:45:02,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560124350] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:45:02,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874563460] [2024-10-14 23:45:02,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:02,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:02,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:45:02,796 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 23:45:02,797 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 23:45:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:02,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:45:02,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:45:02,866 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 23:45:02,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:45:02,888 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 23:45:02,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874563460] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:45:02,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:45:02,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-14 23:45:02,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344026668] [2024-10-14 23:45:02,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:45:02,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 23:45:02,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:02,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 23:45:02,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 23:45:02,899 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-10-14 23:45:02,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 122 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 23:45:02,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:02,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-10-14 23:45:02,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:03,041 INFO L124 PetriNetUnfolderBase]: 532/1169 cut-off events. [2024-10-14 23:45:03,041 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-10-14 23:45:03,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2088 conditions, 1169 events. 532/1169 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6656 event pairs, 468 based on Foata normal form. 2/1065 useless extension candidates. Maximal degree in co-relation 2053. Up to 865 conditions per place. [2024-10-14 23:45:03,047 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 26 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-10-14 23:45:03,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 53 transitions, 203 flow [2024-10-14 23:45:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:45:03,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:45:03,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-10-14 23:45:03,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2024-10-14 23:45:03,049 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 122 flow. Second operand 7 states and 175 transitions. [2024-10-14 23:45:03,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 53 transitions, 203 flow [2024-10-14 23:45:03,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 53 transitions, 189 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:03,050 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 148 flow [2024-10-14 23:45:03,051 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=148, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-10-14 23:45:03,051 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2024-10-14 23:45:03,051 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 148 flow [2024-10-14 23:45:03,051 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 23:45:03,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:03,051 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:03,067 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 23:45:03,255 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 23:45:03,256 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-14 23:45:03,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:03,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2118403179, now seen corresponding path program 2 times [2024-10-14 23:45:03,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:03,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200283448] [2024-10-14 23:45:03,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:03,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:03,294 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 23:45:03,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:03,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200283448] [2024-10-14 23:45:03,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200283448] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:03,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:03,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:03,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833646290] [2024-10-14 23:45:03,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:03,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:03,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:03,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:03,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:03,300 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-10-14 23:45:03,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 148 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 23:45:03,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:03,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-10-14 23:45:03,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:03,415 INFO L124 PetriNetUnfolderBase]: 585/1235 cut-off events. [2024-10-14 23:45:03,415 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-10-14 23:45:03,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2250 conditions, 1235 events. 585/1235 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6919 event pairs, 236 based on Foata normal form. 33/1193 useless extension candidates. Maximal degree in co-relation 2210. Up to 807 conditions per place. [2024-10-14 23:45:03,419 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 45 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2024-10-14 23:45:03,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 271 flow [2024-10-14 23:45:03,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:03,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:03,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-10-14 23:45:03,421 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6477987421383647 [2024-10-14 23:45:03,421 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 148 flow. Second operand 3 states and 103 transitions. [2024-10-14 23:45:03,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 271 flow [2024-10-14 23:45:03,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 65 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:03,422 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 146 flow [2024-10-14 23:45:03,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, 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 23:45:03,423 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2024-10-14 23:45:03,423 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 146 flow [2024-10-14 23:45:03,423 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 23:45:03,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:03,423 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:03,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 23:45:03,423 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-14 23:45:03,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:03,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1245989557, now seen corresponding path program 1 times [2024-10-14 23:45:03,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:03,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778586749] [2024-10-14 23:45:03,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:03,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:03,456 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 23:45:03,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:03,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778586749] [2024-10-14 23:45:03,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778586749] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:03,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:03,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:03,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965287233] [2024-10-14 23:45:03,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:03,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:03,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:03,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:03,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:03,468 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-10-14 23:45:03,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 146 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 23:45:03,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:03,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-10-14 23:45:03,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:03,560 INFO L124 PetriNetUnfolderBase]: 532/1161 cut-off events. [2024-10-14 23:45:03,560 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2024-10-14 23:45:03,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2152 conditions, 1161 events. 532/1161 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 6564 event pairs, 68 based on Foata normal form. 33/1143 useless extension candidates. Maximal degree in co-relation 2113. Up to 721 conditions per place. [2024-10-14 23:45:03,565 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 44 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-10-14 23:45:03,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 64 transitions, 267 flow [2024-10-14 23:45:03,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:03,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-10-14 23:45:03,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2024-10-14 23:45:03,566 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 146 flow. Second operand 3 states and 102 transitions. [2024-10-14 23:45:03,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 64 transitions, 267 flow [2024-10-14 23:45:03,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 64 transitions, 263 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:03,567 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 144 flow [2024-10-14 23:45:03,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-10-14 23:45:03,568 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2024-10-14 23:45:03,568 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 144 flow [2024-10-14 23:45:03,568 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 23:45:03,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:03,568 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:03,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 23:45:03,568 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-14 23:45:03,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:03,569 INFO L85 PathProgramCache]: Analyzing trace with hash -923983343, now seen corresponding path program 1 times [2024-10-14 23:45:03,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:03,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269787135] [2024-10-14 23:45:03,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:03,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:03,600 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 23:45:03,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:03,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269787135] [2024-10-14 23:45:03,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269787135] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:03,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:03,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:03,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605439579] [2024-10-14 23:45:03,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:03,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:03,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:03,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:03,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:03,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-10-14 23:45:03,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 144 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 23:45:03,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:03,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-10-14 23:45:03,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:03,702 INFO L124 PetriNetUnfolderBase]: 582/1213 cut-off events. [2024-10-14 23:45:03,702 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-10-14 23:45:03,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2290 conditions, 1213 events. 582/1213 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6646 event pairs, 92 based on Foata normal form. 30/1198 useless extension candidates. Maximal degree in co-relation 2251. Up to 750 conditions per place. [2024-10-14 23:45:03,707 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 44 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2024-10-14 23:45:03,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 262 flow [2024-10-14 23:45:03,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:03,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:03,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-10-14 23:45:03,708 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2024-10-14 23:45:03,708 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 144 flow. Second operand 3 states and 102 transitions. [2024-10-14 23:45:03,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 262 flow [2024-10-14 23:45:03,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:03,710 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 142 flow [2024-10-14 23:45:03,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-10-14 23:45:03,710 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2024-10-14 23:45:03,710 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 142 flow [2024-10-14 23:45:03,711 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 23:45:03,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:03,711 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-10-14 23:45:03,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 23:45:03,711 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 23:45:03,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:03,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1421282663, now seen corresponding path program 1 times [2024-10-14 23:45:03,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:03,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050801672] [2024-10-14 23:45:03,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:03,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:03,795 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 23:45:03,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:03,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050801672] [2024-10-14 23:45:03,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050801672] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:45:03,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005910328] [2024-10-14 23:45:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:03,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:03,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:45:03,798 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 23:45:03,799 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 23:45:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:03,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 23:45:03,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:45:03,881 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 23:45:03,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:45:03,946 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 23:45:03,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005910328] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:45:03,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:45:03,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-14 23:45:03,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082451771] [2024-10-14 23:45:03,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:45:03,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 23:45:03,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:03,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 23:45:03,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-14 23:45:03,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-10-14 23:45:03,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 142 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 23:45:03,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:03,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-10-14 23:45:03,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:04,153 INFO L124 PetriNetUnfolderBase]: 532/1160 cut-off events. [2024-10-14 23:45:04,153 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2024-10-14 23:45:04,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2163 conditions, 1160 events. 532/1160 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6458 event pairs, 468 based on Foata normal form. 3/1075 useless extension candidates. Maximal degree in co-relation 2097. Up to 865 conditions per place. [2024-10-14 23:45:04,159 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 26 selfloop transitions, 13 changer transitions 0/56 dead transitions. [2024-10-14 23:45:04,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 56 transitions, 256 flow [2024-10-14 23:45:04,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 23:45:04,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 23:45:04,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 302 transitions. [2024-10-14 23:45:04,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43831640058055155 [2024-10-14 23:45:04,160 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 142 flow. Second operand 13 states and 302 transitions. [2024-10-14 23:45:04,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 56 transitions, 256 flow [2024-10-14 23:45:04,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 56 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:04,161 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 215 flow [2024-10-14 23:45:04,162 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=215, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2024-10-14 23:45:04,162 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2024-10-14 23:45:04,162 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 215 flow [2024-10-14 23:45:04,162 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 23:45:04,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:04,162 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 3, 2, 1, 1, 1, 1, 1] [2024-10-14 23:45:04,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 23:45:04,366 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 23:45:04,367 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 23:45:04,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:04,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1797216226, now seen corresponding path program 2 times [2024-10-14 23:45:04,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:04,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472073964] [2024-10-14 23:45:04,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:04,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:45:04,387 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 23:45:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:45:04,404 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 23:45:04,405 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 23:45:04,405 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-10-14 23:45:04,405 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2024-10-14 23:45:04,405 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2024-10-14 23:45:04,405 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2024-10-14 23:45:04,406 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2024-10-14 23:45:04,406 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2024-10-14 23:45:04,406 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2024-10-14 23:45:04,406 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2024-10-14 23:45:04,406 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2024-10-14 23:45:04,406 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2024-10-14 23:45:04,406 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2024-10-14 23:45:04,406 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2024-10-14 23:45:04,407 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2024-10-14 23:45:04,407 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2024-10-14 23:45:04,407 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2024-10-14 23:45:04,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 23:45:04,407 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2024-10-14 23:45:04,408 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 23:45:04,408 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-14 23:45:04,431 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:45:04,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 74 transitions, 166 flow [2024-10-14 23:45:04,438 INFO L124 PetriNetUnfolderBase]: 7/82 cut-off events. [2024-10-14 23:45:04,439 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 23:45:04,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 7/82 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 207 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 63. Up to 4 conditions per place. [2024-10-14 23:45:04,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 74 transitions, 166 flow [2024-10-14 23:45:04,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 74 transitions, 166 flow [2024-10-14 23:45:04,441 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:45:04,441 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;@42147347, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:45:04,441 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-10-14 23:45:04,442 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:45:04,442 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-14 23:45:04,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:45:04,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:04,443 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 23:45:04,443 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 23:45:04,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:04,443 INFO L85 PathProgramCache]: Analyzing trace with hash 487865, now seen corresponding path program 1 times [2024-10-14 23:45:04,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:04,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805992499] [2024-10-14 23:45:04,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:04,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:04,463 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 23:45:04,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:04,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805992499] [2024-10-14 23:45:04,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805992499] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:04,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:04,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:04,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951675538] [2024-10-14 23:45:04,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:04,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:45:04,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:04,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:45:04,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:45:04,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 74 [2024-10-14 23:45:04,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 166 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 23:45:04,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:04,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 74 [2024-10-14 23:45:04,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:05,592 INFO L124 PetriNetUnfolderBase]: 8632/15019 cut-off events. [2024-10-14 23:45:05,592 INFO L125 PetriNetUnfolderBase]: For 676/676 co-relation queries the response was YES. [2024-10-14 23:45:05,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27426 conditions, 15019 events. 8632/15019 cut-off events. For 676/676 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 115589 event pairs, 7668 based on Foata normal form. 964/14852 useless extension candidates. Maximal degree in co-relation 10470. Up to 11969 conditions per place. [2024-10-14 23:45:05,668 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 40 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2024-10-14 23:45:05,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 248 flow [2024-10-14 23:45:05,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:45:05,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:45:05,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-10-14 23:45:05,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5608108108108109 [2024-10-14 23:45:05,669 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 166 flow. Second operand 4 states and 166 transitions. [2024-10-14 23:45:05,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 248 flow [2024-10-14 23:45:05,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 246 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-14 23:45:05,671 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 180 flow [2024-10-14 23:45:05,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2024-10-14 23:45:05,672 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 4 predicate places. [2024-10-14 23:45:05,672 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 180 flow [2024-10-14 23:45:05,672 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 23:45:05,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:05,672 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-14 23:45:05,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 23:45:05,672 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 23:45:05,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:05,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1649547206, now seen corresponding path program 1 times [2024-10-14 23:45:05,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:05,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880344106] [2024-10-14 23:45:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:05,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:05,721 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 23:45:05,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:05,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880344106] [2024-10-14 23:45:05,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880344106] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:45:05,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102465314] [2024-10-14 23:45:05,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:05,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:05,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:45:05,724 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 23:45:05,725 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 23:45:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:05,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:45:05,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:45:05,801 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 23:45:05,801 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:45:05,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102465314] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:05,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:45:05,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-14 23:45:05,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028340396] [2024-10-14 23:45:05,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:05,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:45:05,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:05,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:45:05,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:45:05,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 74 [2024-10-14 23:45:05,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 180 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 23:45:05,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:05,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 74 [2024-10-14 23:45:05,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:07,120 INFO L124 PetriNetUnfolderBase]: 8632/15018 cut-off events. [2024-10-14 23:45:07,121 INFO L125 PetriNetUnfolderBase]: For 382/382 co-relation queries the response was YES. [2024-10-14 23:45:07,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27336 conditions, 15018 events. 8632/15018 cut-off events. For 382/382 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 115460 event pairs, 7668 based on Foata normal form. 1/13888 useless extension candidates. Maximal degree in co-relation 27316. Up to 11964 conditions per place. [2024-10-14 23:45:07,201 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 36 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2024-10-14 23:45:07,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 71 transitions, 260 flow [2024-10-14 23:45:07,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:45:07,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:45:07,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-10-14 23:45:07,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48873873873873874 [2024-10-14 23:45:07,203 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 180 flow. Second operand 6 states and 217 transitions. [2024-10-14 23:45:07,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 71 transitions, 260 flow [2024-10-14 23:45:07,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 71 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:45:07,205 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 186 flow [2024-10-14 23:45:07,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2024-10-14 23:45:07,206 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 7 predicate places. [2024-10-14 23:45:07,206 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 186 flow [2024-10-14 23:45:07,206 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 23:45:07,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:07,206 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-14 23:45:07,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-14 23:45:07,407 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 23:45:07,408 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 23:45:07,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:07,408 INFO L85 PathProgramCache]: Analyzing trace with hash -403643700, now seen corresponding path program 1 times [2024-10-14 23:45:07,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:07,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253636966] [2024-10-14 23:45:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:07,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:07,430 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 23:45:07,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:07,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253636966] [2024-10-14 23:45:07,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253636966] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:07,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:07,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:07,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164423252] [2024-10-14 23:45:07,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:07,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:07,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:07,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:07,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:07,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 74 [2024-10-14 23:45:07,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 71 transitions, 186 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 23:45:07,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:07,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 74 [2024-10-14 23:45:07,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:08,427 INFO L124 PetriNetUnfolderBase]: 8632/15017 cut-off events. [2024-10-14 23:45:08,428 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2024-10-14 23:45:08,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27338 conditions, 15017 events. 8632/15017 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 115595 event pairs, 7668 based on Foata normal form. 1/13888 useless extension candidates. Maximal degree in co-relation 27312. Up to 11967 conditions per place. [2024-10-14 23:45:08,594 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 37 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2024-10-14 23:45:08,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 70 transitions, 264 flow [2024-10-14 23:45:08,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:08,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:08,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-10-14 23:45:08,599 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5720720720720721 [2024-10-14 23:45:08,599 INFO L175 Difference]: Start difference. First operand has 81 places, 71 transitions, 186 flow. Second operand 3 states and 127 transitions. [2024-10-14 23:45:08,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 70 transitions, 264 flow [2024-10-14 23:45:08,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 70 transitions, 242 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-14 23:45:08,601 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 168 flow [2024-10-14 23:45:08,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2024-10-14 23:45:08,602 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 2 predicate places. [2024-10-14 23:45:08,602 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 168 flow [2024-10-14 23:45:08,602 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 23:45:08,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:08,606 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:08,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-14 23:45:08,606 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-14 23:45:08,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:08,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1353451991, now seen corresponding path program 1 times [2024-10-14 23:45:08,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:08,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706072591] [2024-10-14 23:45:08,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:08,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:08,674 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 23:45:08,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:08,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706072591] [2024-10-14 23:45:08,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706072591] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:45:08,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851240613] [2024-10-14 23:45:08,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:08,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:08,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:45:08,677 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 23:45:08,679 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 23:45:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:08,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:45:08,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:45:08,760 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 23:45:08,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:45:08,783 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 23:45:08,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851240613] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:45:08,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:45:08,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-14 23:45:08,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349664228] [2024-10-14 23:45:08,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:45:08,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 23:45:08,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:08,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 23:45:08,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 23:45:08,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 74 [2024-10-14 23:45:08,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 168 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 23:45:08,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:08,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 74 [2024-10-14 23:45:08,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:09,656 INFO L124 PetriNetUnfolderBase]: 8632/15021 cut-off events. [2024-10-14 23:45:09,656 INFO L125 PetriNetUnfolderBase]: For 389/389 co-relation queries the response was YES. [2024-10-14 23:45:09,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27341 conditions, 15021 events. 8632/15021 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 115383 event pairs, 7668 based on Foata normal form. 2/13894 useless extension candidates. Maximal degree in co-relation 27305. Up to 11965 conditions per place. [2024-10-14 23:45:09,718 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 37 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2024-10-14 23:45:09,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 73 transitions, 271 flow [2024-10-14 23:45:09,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:45:09,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:45:09,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 249 transitions. [2024-10-14 23:45:09,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4806949806949807 [2024-10-14 23:45:09,719 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 168 flow. Second operand 7 states and 249 transitions. [2024-10-14 23:45:09,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 73 transitions, 271 flow [2024-10-14 23:45:09,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 73 transitions, 257 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:09,721 INFO L231 Difference]: Finished difference. Result has 82 places, 73 transitions, 194 flow [2024-10-14 23:45:09,721 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=194, PETRI_PLACES=82, PETRI_TRANSITIONS=73} [2024-10-14 23:45:09,721 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 8 predicate places. [2024-10-14 23:45:09,721 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 73 transitions, 194 flow [2024-10-14 23:45:09,722 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 23:45:09,722 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:09,722 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:09,739 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 23:45:09,922 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 23:45:09,923 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-14 23:45:09,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:09,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1145435913, now seen corresponding path program 2 times [2024-10-14 23:45:09,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:09,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902688463] [2024-10-14 23:45:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:09,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:09,951 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 23:45:09,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:09,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902688463] [2024-10-14 23:45:09,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902688463] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:09,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:09,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:09,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328351375] [2024-10-14 23:45:09,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:09,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:09,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:09,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:09,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:09,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 74 [2024-10-14 23:45:09,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 194 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 23:45:09,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:09,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 74 [2024-10-14 23:45:09,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:11,054 INFO L124 PetriNetUnfolderBase]: 9495/16091 cut-off events. [2024-10-14 23:45:11,054 INFO L125 PetriNetUnfolderBase]: For 396/396 co-relation queries the response was YES. [2024-10-14 23:45:11,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29647 conditions, 16091 events. 9495/16091 cut-off events. For 396/396 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 123794 event pairs, 1268 based on Foata normal form. 333/15848 useless extension candidates. Maximal degree in co-relation 29606. Up to 11097 conditions per place. [2024-10-14 23:45:11,158 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 67 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-10-14 23:45:11,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 96 transitions, 388 flow [2024-10-14 23:45:11,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:11,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:11,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-10-14 23:45:11,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6846846846846847 [2024-10-14 23:45:11,163 INFO L175 Difference]: Start difference. First operand has 82 places, 73 transitions, 194 flow. Second operand 3 states and 152 transitions. [2024-10-14 23:45:11,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 96 transitions, 388 flow [2024-10-14 23:45:11,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 96 transitions, 384 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:11,165 INFO L231 Difference]: Finished difference. Result has 81 places, 72 transitions, 192 flow [2024-10-14 23:45:11,165 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=81, PETRI_TRANSITIONS=72} [2024-10-14 23:45:11,166 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 7 predicate places. [2024-10-14 23:45:11,166 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 72 transitions, 192 flow [2024-10-14 23:45:11,166 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 23:45:11,166 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:11,166 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:11,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-14 23:45:11,167 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-14 23:45:11,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:11,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1148775457, now seen corresponding path program 1 times [2024-10-14 23:45:11,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:11,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550076480] [2024-10-14 23:45:11,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:11,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:11,202 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 23:45:11,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:11,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550076480] [2024-10-14 23:45:11,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550076480] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:11,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:11,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:11,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210762532] [2024-10-14 23:45:11,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:11,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:11,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:11,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:11,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:11,208 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 74 [2024-10-14 23:45:11,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 72 transitions, 192 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 23:45:11,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:11,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 74 [2024-10-14 23:45:11,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:12,143 INFO L124 PetriNetUnfolderBase]: 8632/14895 cut-off events. [2024-10-14 23:45:12,143 INFO L125 PetriNetUnfolderBase]: For 1025/1025 co-relation queries the response was YES. [2024-10-14 23:45:12,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27887 conditions, 14895 events. 8632/14895 cut-off events. For 1025/1025 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 115277 event pairs, 1268 based on Foata normal form. 333/14667 useless extension candidates. Maximal degree in co-relation 27847. Up to 9901 conditions per place. [2024-10-14 23:45:12,290 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 66 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2024-10-14 23:45:12,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 95 transitions, 384 flow [2024-10-14 23:45:12,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:12,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:12,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2024-10-14 23:45:12,295 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6801801801801802 [2024-10-14 23:45:12,295 INFO L175 Difference]: Start difference. First operand has 81 places, 72 transitions, 192 flow. Second operand 3 states and 151 transitions. [2024-10-14 23:45:12,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 95 transitions, 384 flow [2024-10-14 23:45:12,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 95 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:12,304 INFO L231 Difference]: Finished difference. Result has 80 places, 71 transitions, 190 flow [2024-10-14 23:45:12,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=80, PETRI_TRANSITIONS=71} [2024-10-14 23:45:12,305 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2024-10-14 23:45:12,305 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 190 flow [2024-10-14 23:45:12,305 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 23:45:12,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:12,305 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:12,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-14 23:45:12,306 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-14 23:45:12,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:12,306 INFO L85 PathProgramCache]: Analyzing trace with hash 142569937, now seen corresponding path program 1 times [2024-10-14 23:45:12,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:12,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026289420] [2024-10-14 23:45:12,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:12,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:12,487 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 23:45:12,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:12,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026289420] [2024-10-14 23:45:12,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026289420] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:45:12,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855920957] [2024-10-14 23:45:12,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:12,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:12,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:45:12,493 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 23:45:12,494 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 23:45:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:12,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 23:45:12,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:45:12,613 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 23:45:12,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:45:12,714 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 23:45:12,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855920957] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:45:12,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:45:12,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-14 23:45:12,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960473153] [2024-10-14 23:45:12,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:45:12,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 23:45:12,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:12,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 23:45:12,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-14 23:45:12,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 74 [2024-10-14 23:45:12,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 190 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 23:45:12,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:12,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 74 [2024-10-14 23:45:12,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:13,718 INFO L124 PetriNetUnfolderBase]: 8632/15024 cut-off events. [2024-10-14 23:45:13,718 INFO L125 PetriNetUnfolderBase]: For 1066/1066 co-relation queries the response was YES. [2024-10-14 23:45:13,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28034 conditions, 15024 events. 8632/15024 cut-off events. For 1066/1066 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 115442 event pairs, 7668 based on Foata normal form. 3/13904 useless extension candidates. Maximal degree in co-relation 27967. Up to 11965 conditions per place. [2024-10-14 23:45:13,800 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 37 selfloop transitions, 13 changer transitions 0/77 dead transitions. [2024-10-14 23:45:13,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 77 transitions, 326 flow [2024-10-14 23:45:13,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 23:45:13,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 23:45:13,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 430 transitions. [2024-10-14 23:45:13,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.446985446985447 [2024-10-14 23:45:13,802 INFO L175 Difference]: Start difference. First operand has 80 places, 71 transitions, 190 flow. Second operand 13 states and 430 transitions. [2024-10-14 23:45:13,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 77 transitions, 326 flow [2024-10-14 23:45:13,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 77 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:13,805 INFO L231 Difference]: Finished difference. Result has 93 places, 77 transitions, 263 flow [2024-10-14 23:45:13,805 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=263, PETRI_PLACES=93, PETRI_TRANSITIONS=77} [2024-10-14 23:45:13,805 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2024-10-14 23:45:13,805 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 77 transitions, 263 flow [2024-10-14 23:45:13,806 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 23:45:13,806 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:13,806 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:13,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 23:45:14,006 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 23:45:14,006 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-14 23:45:14,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:14,007 INFO L85 PathProgramCache]: Analyzing trace with hash -2883324, now seen corresponding path program 2 times [2024-10-14 23:45:14,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:14,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844004905] [2024-10-14 23:45:14,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:14,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:14,057 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 23:45:14,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:14,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844004905] [2024-10-14 23:45:14,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844004905] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:14,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:14,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:14,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710179216] [2024-10-14 23:45:14,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:14,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:14,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:14,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:14,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:14,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 74 [2024-10-14 23:45:14,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 77 transitions, 263 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 23:45:14,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:14,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 74 [2024-10-14 23:45:14,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:15,212 INFO L124 PetriNetUnfolderBase]: 9492/15934 cut-off events. [2024-10-14 23:45:15,212 INFO L125 PetriNetUnfolderBase]: For 435/435 co-relation queries the response was YES. [2024-10-14 23:45:15,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29521 conditions, 15934 events. 9492/15934 cut-off events. For 435/435 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 117863 event pairs, 2972 based on Foata normal form. 330/15484 useless extension candidates. Maximal degree in co-relation 29434. Up to 11040 conditions per place. [2024-10-14 23:45:15,340 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 72 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2024-10-14 23:45:15,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 99 transitions, 460 flow [2024-10-14 23:45:15,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:15,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:15,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2024-10-14 23:45:15,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6801801801801802 [2024-10-14 23:45:15,342 INFO L175 Difference]: Start difference. First operand has 93 places, 77 transitions, 263 flow. Second operand 3 states and 151 transitions. [2024-10-14 23:45:15,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 99 transitions, 460 flow [2024-10-14 23:45:15,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 99 transitions, 450 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-14 23:45:15,345 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 255 flow [2024-10-14 23:45:15,346 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2024-10-14 23:45:15,346 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2024-10-14 23:45:15,346 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 255 flow [2024-10-14 23:45:15,346 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 23:45:15,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:15,346 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:15,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-14 23:45:15,347 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-14 23:45:15,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:15,347 INFO L85 PathProgramCache]: Analyzing trace with hash -89382502, now seen corresponding path program 1 times [2024-10-14 23:45:15,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:15,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297967331] [2024-10-14 23:45:15,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:15,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:15,407 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 23:45:15,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:15,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297967331] [2024-10-14 23:45:15,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297967331] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:15,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:15,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:15,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689467017] [2024-10-14 23:45:15,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:15,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:15,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:15,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:15,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:15,414 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 74 [2024-10-14 23:45:15,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 255 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 23:45:15,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:15,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 74 [2024-10-14 23:45:15,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:16,681 INFO L124 PetriNetUnfolderBase]: 8632/14624 cut-off events. [2024-10-14 23:45:16,682 INFO L125 PetriNetUnfolderBase]: For 1054/1054 co-relation queries the response was YES. [2024-10-14 23:45:16,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27647 conditions, 14624 events. 8632/14624 cut-off events. For 1054/1054 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 107228 event pairs, 2732 based on Foata normal form. 330/14222 useless extension candidates. Maximal degree in co-relation 27564. Up to 9850 conditions per place. [2024-10-14 23:45:16,817 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 71 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2024-10-14 23:45:16,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 98 transitions, 450 flow [2024-10-14 23:45:16,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:16,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:16,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-10-14 23:45:16,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-10-14 23:45:16,819 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 255 flow. Second operand 3 states and 150 transitions. [2024-10-14 23:45:16,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 98 transitions, 450 flow [2024-10-14 23:45:16,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 98 transitions, 446 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:16,830 INFO L231 Difference]: Finished difference. Result has 89 places, 75 transitions, 253 flow [2024-10-14 23:45:16,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=87, 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=253, PETRI_PLACES=89, PETRI_TRANSITIONS=75} [2024-10-14 23:45:16,834 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 15 predicate places. [2024-10-14 23:45:16,834 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 75 transitions, 253 flow [2024-10-14 23:45:16,834 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 23:45:16,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:16,834 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:16,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-14 23:45:16,834 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-14 23:45:16,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:16,834 INFO L85 PathProgramCache]: Analyzing trace with hash -40373449, now seen corresponding path program 1 times [2024-10-14 23:45:16,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:16,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521219730] [2024-10-14 23:45:16,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:16,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:16,969 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 23:45:16,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:16,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521219730] [2024-10-14 23:45:16,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521219730] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:16,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:16,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:16,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793626210] [2024-10-14 23:45:16,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:16,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:16,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:16,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:16,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:16,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 74 [2024-10-14 23:45:16,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 75 transitions, 253 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 23:45:16,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:16,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 74 [2024-10-14 23:45:16,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:17,984 INFO L124 PetriNetUnfolderBase]: 9432/15872 cut-off events. [2024-10-14 23:45:17,984 INFO L125 PetriNetUnfolderBase]: For 1144/1144 co-relation queries the response was YES. [2024-10-14 23:45:18,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30055 conditions, 15872 events. 9432/15872 cut-off events. For 1144/1144 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 118249 event pairs, 1748 based on Foata normal form. 300/15653 useless extension candidates. Maximal degree in co-relation 29972. Up to 10200 conditions per place. [2024-10-14 23:45:18,073 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 71 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-10-14 23:45:18,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 96 transitions, 445 flow [2024-10-14 23:45:18,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:18,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:18,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-10-14 23:45:18,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-10-14 23:45:18,074 INFO L175 Difference]: Start difference. First operand has 89 places, 75 transitions, 253 flow. Second operand 3 states and 150 transitions. [2024-10-14 23:45:18,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 96 transitions, 445 flow [2024-10-14 23:45:18,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 96 transitions, 437 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:18,078 INFO L231 Difference]: Finished difference. Result has 88 places, 74 transitions, 251 flow [2024-10-14 23:45:18,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=86, 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=251, PETRI_PLACES=88, PETRI_TRANSITIONS=74} [2024-10-14 23:45:18,079 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 14 predicate places. [2024-10-14 23:45:18,079 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 74 transitions, 251 flow [2024-10-14 23:45:18,079 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 23:45:18,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:18,079 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 4, 3, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:18,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-14 23:45:18,079 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 23:45:18,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:18,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1251581601, now seen corresponding path program 1 times [2024-10-14 23:45:18,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:18,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476661633] [2024-10-14 23:45:18,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:18,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:45:18,091 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 23:45:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:45:18,102 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 23:45:18,102 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 23:45:18,102 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2024-10-14 23:45:18,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2024-10-14 23:45:18,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2024-10-14 23:45:18,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2024-10-14 23:45:18,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2024-10-14 23:45:18,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2024-10-14 23:45:18,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2024-10-14 23:45:18,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2024-10-14 23:45:18,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2024-10-14 23:45:18,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2024-10-14 23:45:18,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2024-10-14 23:45:18,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2024-10-14 23:45:18,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2024-10-14 23:45:18,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2024-10-14 23:45:18,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2024-10-14 23:45:18,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2024-10-14 23:45:18,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2024-10-14 23:45:18,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2024-10-14 23:45:18,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2024-10-14 23:45:18,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-14 23:45:18,104 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:18,104 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 23:45:18,104 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-14 23:45:18,125 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:45:18,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 95 transitions, 218 flow [2024-10-14 23:45:18,132 INFO L124 PetriNetUnfolderBase]: 9/106 cut-off events. [2024-10-14 23:45:18,132 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 23:45:18,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 106 events. 9/106 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 310 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 90. Up to 5 conditions per place. [2024-10-14 23:45:18,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 95 transitions, 218 flow [2024-10-14 23:45:18,133 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 95 transitions, 218 flow [2024-10-14 23:45:18,134 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:45:18,134 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;@42147347, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:45:18,134 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-14 23:45:18,135 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:45:18,135 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-14 23:45:18,135 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:45:18,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:18,135 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 23:45:18,135 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 23:45:18,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:18,136 INFO L85 PathProgramCache]: Analyzing trace with hash 582200, now seen corresponding path program 1 times [2024-10-14 23:45:18,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:18,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528820163] [2024-10-14 23:45:18,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:18,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:18,157 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 23:45:18,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:18,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528820163] [2024-10-14 23:45:18,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528820163] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:18,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:18,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:18,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603201924] [2024-10-14 23:45:18,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:18,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:45:18,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:18,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:45:18,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:45:18,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 95 [2024-10-14 23:45:18,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 95 transitions, 218 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 23:45:18,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:18,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 95 [2024-10-14 23:45:18,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:32,440 INFO L124 PetriNetUnfolderBase]: 119632/184503 cut-off events. [2024-10-14 23:45:32,441 INFO L125 PetriNetUnfolderBase]: For 11496/11496 co-relation queries the response was YES. [2024-10-14 23:45:32,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342911 conditions, 184503 events. 119632/184503 cut-off events. For 11496/11496 co-relation queries the response was YES. Maximal size of possible extension queue 6415. Compared 1652778 event pairs, 106668 based on Foata normal form. 12964/185509 useless extension candidates. Maximal degree in co-relation 39084. Up to 152969 conditions per place. [2024-10-14 23:45:33,741 INFO L140 encePairwiseOnDemand]: 84/95 looper letters, 51 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-10-14 23:45:33,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 92 transitions, 320 flow [2024-10-14 23:45:33,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:45:33,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:45:33,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2024-10-14 23:45:33,743 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5631578947368421 [2024-10-14 23:45:33,743 INFO L175 Difference]: Start difference. First operand has 95 places, 95 transitions, 218 flow. Second operand 4 states and 214 transitions. [2024-10-14 23:45:33,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 92 transitions, 320 flow [2024-10-14 23:45:33,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 92 transitions, 314 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-14 23:45:33,749 INFO L231 Difference]: Finished difference. Result has 99 places, 92 transitions, 226 flow [2024-10-14 23:45:33,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=99, PETRI_TRANSITIONS=92} [2024-10-14 23:45:33,749 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 4 predicate places. [2024-10-14 23:45:33,750 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 92 transitions, 226 flow [2024-10-14 23:45:33,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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 23:45:33,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:33,750 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-14 23:45:33,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-14 23:45:33,750 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-14 23:45:33,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:33,751 INFO L85 PathProgramCache]: Analyzing trace with hash 165008230, now seen corresponding path program 1 times [2024-10-14 23:45:33,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:33,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530058095] [2024-10-14 23:45:33,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:33,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:33,782 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 23:45:33,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:33,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530058095] [2024-10-14 23:45:33,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530058095] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:45:33,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571989206] [2024-10-14 23:45:33,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:33,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:45:33,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:45:33,786 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:45:33,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 23:45:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:33,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:45:33,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:45:33,878 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 23:45:33,878 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:45:33,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571989206] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:33,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:45:33,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-14 23:45:33,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620718155] [2024-10-14 23:45:33,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:33,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:45:33,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:33,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:45:33,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:45:33,885 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 95 [2024-10-14 23:45:33,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 92 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 38.833333333333336) internal successors, (233), 6 states have internal predecessors, (233), 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 23:45:33,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:33,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 95 [2024-10-14 23:45:33,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand