./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 23:56:00,057 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:56:00,113 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:56:00,117 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:56:00,119 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:56:00,142 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:56:00,146 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:56:00,146 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:56:00,147 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:56:00,147 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:56:00,148 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:56:00,148 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:56:00,148 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:56:00,148 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:56:00,149 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:56:00,149 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:56:00,149 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:56:00,150 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:56:00,150 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:56:00,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:56:00,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:56:00,151 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:56:00,151 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:56:00,152 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:56:00,152 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:56:00,152 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:56:00,152 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:56:00,153 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:56:00,153 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:56:00,153 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:56:00,153 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:56:00,154 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:56:00,155 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:56:00,155 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:56:00,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:56:00,155 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:56:00,156 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:56:00,156 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:56:00,156 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:56:00,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:56:00,156 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:56:00,157 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:56:00,157 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:56:00,158 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:56:00,158 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2024-10-11 23:56:00,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:56:00,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:56:00,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:56:00,384 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:56:00,384 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:56:00,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2024-10-11 23:56:01,609 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:56:01,824 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:56:01,824 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2024-10-11 23:56:01,842 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/afe0b337d/b5619a00c5e240beb01a08db4bc0e9ce/FLAG6f58367b6 [2024-10-11 23:56:02,163 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/afe0b337d/b5619a00c5e240beb01a08db4bc0e9ce [2024-10-11 23:56:02,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:56:02,166 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:56:02,167 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:56:02,167 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:56:02,179 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:56:02,180 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:56:02" (1/1) ... [2024-10-11 23:56:02,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d7491aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:02, skipping insertion in model container [2024-10-11 23:56:02,181 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:56:02" (1/1) ... [2024-10-11 23:56:02,241 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:56:02,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:56:02,669 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:56:02,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:56:02,771 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:56:02,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:02 WrapperNode [2024-10-11 23:56:02,772 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:56:02,773 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:56:02,773 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:56:02,773 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:56:02,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:02" (1/1) ... [2024-10-11 23:56:02,796 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:02" (1/1) ... [2024-10-11 23:56:02,823 INFO L138 Inliner]: procedures = 262, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2024-10-11 23:56:02,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:56:02,824 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:56:02,824 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:56:02,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:56:02,833 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:02" (1/1) ... [2024-10-11 23:56:02,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:02" (1/1) ... [2024-10-11 23:56:02,837 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:02" (1/1) ... [2024-10-11 23:56:02,856 INFO L175 MemorySlicer]: Split 5 memory accesses to 1 slices as follows [5]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 3 writes are split as follows [3]. [2024-10-11 23:56:02,857 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:02" (1/1) ... [2024-10-11 23:56:02,857 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:02" (1/1) ... [2024-10-11 23:56:02,864 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:02" (1/1) ... [2024-10-11 23:56:02,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:02" (1/1) ... [2024-10-11 23:56:02,871 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:02" (1/1) ... [2024-10-11 23:56:02,872 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:02" (1/1) ... [2024-10-11 23:56:02,874 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:56:02,875 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:56:02,875 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:56:02,875 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:56:02,876 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:02" (1/1) ... [2024-10-11 23:56:02,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:56:02,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:02,903 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 23:56:02,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 23:56:02,944 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 23:56:02,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 23:56:02,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 23:56:02,944 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 23:56:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:56:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-11 23:56:02,945 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-11 23:56:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:56:02,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:56:02,947 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 23:56:03,062 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:56:03,064 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:56:03,213 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:56:03,214 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:56:03,280 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:56:03,280 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 23:56:03,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:56:03 BoogieIcfgContainer [2024-10-11 23:56:03,281 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:56:03,283 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:56:03,284 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:56:03,287 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:56:03,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:56:02" (1/3) ... [2024-10-11 23:56:03,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5710f908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:56:03, skipping insertion in model container [2024-10-11 23:56:03,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:02" (2/3) ... [2024-10-11 23:56:03,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5710f908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:56:03, skipping insertion in model container [2024-10-11 23:56:03,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:56:03" (3/3) ... [2024-10-11 23:56:03,290 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2024-10-11 23:56:03,305 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:56:03,306 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-11 23:56:03,306 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:56:03,339 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 23:56:03,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 39 transitions, 82 flow [2024-10-11 23:56:03,402 INFO L124 PetriNetUnfolderBase]: 3/38 cut-off events. [2024-10-11 23:56:03,404 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:56:03,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 3/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-10-11 23:56:03,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 39 transitions, 82 flow [2024-10-11 23:56:03,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 79 flow [2024-10-11 23:56:03,426 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:56:03,433 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;@59250b05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:56:03,434 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-10-11 23:56:03,437 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:56:03,441 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-11 23:56:03,441 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:56:03,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:03,442 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 23:56:03,442 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:03,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:03,448 INFO L85 PathProgramCache]: Analyzing trace with hash 252162, now seen corresponding path program 1 times [2024-10-11 23:56:03,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:03,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609048429] [2024-10-11 23:56:03,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:03,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:03,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:03,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:03,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609048429] [2024-10-11 23:56:03,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609048429] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:03,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:03,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:56:03,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701589569] [2024-10-11 23:56:03,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:03,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:56:03,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:03,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:56:03,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:56:03,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-11 23:56:03,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-10-11 23:56:03,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:03,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-11 23:56:03,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:04,037 INFO L124 PetriNetUnfolderBase]: 83/260 cut-off events. [2024-10-11 23:56:04,038 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:56:04,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 260 events. 83/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1144 event pairs, 64 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 411. Up to 170 conditions per place. [2024-10-11 23:56:04,044 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 24 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2024-10-11 23:56:04,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 137 flow [2024-10-11 23:56:04,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:56:04,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:56:04,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-10-11 23:56:04,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2024-10-11 23:56:04,059 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 79 flow. Second operand 4 states and 86 transitions. [2024-10-11 23:56:04,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 137 flow [2024-10-11 23:56:04,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 40 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:56:04,065 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 102 flow [2024-10-11 23:56:04,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2024-10-11 23:56:04,070 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2024-10-11 23:56:04,070 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 102 flow [2024-10-11 23:56:04,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-10-11 23:56:04,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:04,071 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-11 23:56:04,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 23:56:04,071 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:04,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:04,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1077529093, now seen corresponding path program 1 times [2024-10-11 23:56:04,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:04,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706928721] [2024-10-11 23:56:04,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:04,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:04,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:04,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706928721] [2024-10-11 23:56:04,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706928721] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:04,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401998328] [2024-10-11 23:56:04,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:04,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:04,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:04,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:04,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 23:56:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:04,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:56:04,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:04,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:04,320 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:56:04,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401998328] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:04,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:56:04,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-11 23:56:04,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689090345] [2024-10-11 23:56:04,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:04,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:56:04,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:04,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:56:04,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:04,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-11 23:56:04,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 102 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:04,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:04,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-11 23:56:04,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:04,440 INFO L124 PetriNetUnfolderBase]: 83/259 cut-off events. [2024-10-11 23:56:04,440 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 23:56:04,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 259 events. 83/259 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1140 event pairs, 64 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 428. Up to 165 conditions per place. [2024-10-11 23:56:04,443 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 20 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2024-10-11 23:56:04,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 150 flow [2024-10-11 23:56:04,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:56:04,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:56:04,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-10-11 23:56:04,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-10-11 23:56:04,445 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 102 flow. Second operand 6 states and 111 transitions. [2024-10-11 23:56:04,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 150 flow [2024-10-11 23:56:04,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:56:04,452 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 108 flow [2024-10-11 23:56:04,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-10-11 23:56:04,453 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2024-10-11 23:56:04,453 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 108 flow [2024-10-11 23:56:04,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:04,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:04,453 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-11 23:56:04,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 23:56:04,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:04,654 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:04,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:04,655 INFO L85 PathProgramCache]: Analyzing trace with hash 956336734, now seen corresponding path program 1 times [2024-10-11 23:56:04,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:04,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274403023] [2024-10-11 23:56:04,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:04,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:04,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:56:04,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:04,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274403023] [2024-10-11 23:56:04,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274403023] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:04,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:04,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:56:04,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813022547] [2024-10-11 23:56:04,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:04,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:56:04,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:04,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:56:04,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:56:04,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-11 23:56:04,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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) [2024-10-11 23:56:04,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:04,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-11 23:56:04,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:04,831 INFO L124 PetriNetUnfolderBase]: 83/258 cut-off events. [2024-10-11 23:56:04,832 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 23:56:04,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 258 events. 83/258 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1142 event pairs, 64 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 424. Up to 168 conditions per place. [2024-10-11 23:56:04,836 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 21 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2024-10-11 23:56:04,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 154 flow [2024-10-11 23:56:04,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:56:04,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:56:04,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-10-11 23:56:04,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2024-10-11 23:56:04,838 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 108 flow. Second operand 3 states and 66 transitions. [2024-10-11 23:56:04,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 154 flow [2024-10-11 23:56:04,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 132 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-11 23:56:04,841 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 90 flow [2024-10-11 23:56:04,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2024-10-11 23:56:04,842 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2024-10-11 23:56:04,842 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 90 flow [2024-10-11 23:56:04,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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) [2024-10-11 23:56:04,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:04,843 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:04,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:56:04,843 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:04,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:04,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1232874503, now seen corresponding path program 1 times [2024-10-11 23:56:04,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:04,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216652553] [2024-10-11 23:56:04,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:04,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:04,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:04,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216652553] [2024-10-11 23:56:04,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216652553] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:04,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818914711] [2024-10-11 23:56:04,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:04,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:04,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:04,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:04,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 23:56:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:04,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:56:04,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:05,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:05,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:05,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:05,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818914711] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:05,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:05,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-11 23:56:05,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546569350] [2024-10-11 23:56:05,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:05,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 23:56:05,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:05,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 23:56:05,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 23:56:05,068 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-11 23:56:05,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 90 flow. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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) [2024-10-11 23:56:05,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:05,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-11 23:56:05,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:05,170 INFO L124 PetriNetUnfolderBase]: 83/262 cut-off events. [2024-10-11 23:56:05,170 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-11 23:56:05,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 262 events. 83/262 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1139 event pairs, 64 based on Foata normal form. 2/215 useless extension candidates. Maximal degree in co-relation 417. Up to 166 conditions per place. [2024-10-11 23:56:05,172 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 21 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-10-11 23:56:05,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 161 flow [2024-10-11 23:56:05,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:56:05,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:56:05,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-10-11 23:56:05,175 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46886446886446886 [2024-10-11 23:56:05,175 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 90 flow. Second operand 7 states and 128 transitions. [2024-10-11 23:56:05,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 161 flow [2024-10-11 23:56:05,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 147 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:56:05,177 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 116 flow [2024-10-11 23:56:05,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-10-11 23:56:05,177 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2024-10-11 23:56:05,177 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 116 flow [2024-10-11 23:56:05,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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) [2024-10-11 23:56:05,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:05,178 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:05,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 23:56:05,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:05,384 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:05,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:05,384 INFO L85 PathProgramCache]: Analyzing trace with hash -386914983, now seen corresponding path program 2 times [2024-10-11 23:56:05,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:05,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485487007] [2024-10-11 23:56:05,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:05,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:05,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:05,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:05,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485487007] [2024-10-11 23:56:05,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485487007] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:05,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748512372] [2024-10-11 23:56:05,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 23:56:05,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:05,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:05,506 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:05,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 23:56:05,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 23:56:05,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:56:05,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 23:56:05,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:05,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-11 23:56:05,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-10-11 23:56:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 23:56:05,731 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:56:05,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748512372] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:05,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:56:05,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2024-10-11 23:56:05,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354984339] [2024-10-11 23:56:05,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:05,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:56:05,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:05,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:56:05,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-11 23:56:05,748 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-11 23:56:05,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:05,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:05,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-11 23:56:05,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:05,960 INFO L124 PetriNetUnfolderBase]: 158/395 cut-off events. [2024-10-11 23:56:05,960 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-11 23:56:05,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 395 events. 158/395 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1746 event pairs, 24 based on Foata normal form. 14/331 useless extension candidates. Maximal degree in co-relation 694. Up to 198 conditions per place. [2024-10-11 23:56:05,965 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 57 selfloop transitions, 9 changer transitions 0/77 dead transitions. [2024-10-11 23:56:05,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 320 flow [2024-10-11 23:56:05,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:56:05,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:56:05,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-10-11 23:56:05,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2024-10-11 23:56:05,970 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 116 flow. Second operand 6 states and 147 transitions. [2024-10-11 23:56:05,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 320 flow [2024-10-11 23:56:05,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:56:05,972 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 182 flow [2024-10-11 23:56:05,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=182, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-10-11 23:56:05,973 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 16 predicate places. [2024-10-11 23:56:05,973 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 182 flow [2024-10-11 23:56:05,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:05,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:05,973 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:05,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 23:56:06,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:06,178 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:06,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:06,179 INFO L85 PathProgramCache]: Analyzing trace with hash -365800966, now seen corresponding path program 1 times [2024-10-11 23:56:06,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:06,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100805585] [2024-10-11 23:56:06,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:06,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:06,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:06,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100805585] [2024-10-11 23:56:06,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100805585] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:06,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342339552] [2024-10-11 23:56:06,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:06,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:06,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:06,294 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:06,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 23:56:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:06,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 23:56:06,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:06,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:06,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342339552] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:06,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:06,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-11 23:56:06,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684169768] [2024-10-11 23:56:06,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:06,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 23:56:06,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:06,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 23:56:06,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-11 23:56:06,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-11 23:56:06,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 182 flow. Second operand has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 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) [2024-10-11 23:56:06,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:06,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-11 23:56:06,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:06,696 INFO L124 PetriNetUnfolderBase]: 127/395 cut-off events. [2024-10-11 23:56:06,697 INFO L125 PetriNetUnfolderBase]: For 162/170 co-relation queries the response was YES. [2024-10-11 23:56:06,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 395 events. 127/395 cut-off events. For 162/170 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1873 event pairs, 77 based on Foata normal form. 4/353 useless extension candidates. Maximal degree in co-relation 770. Up to 253 conditions per place. [2024-10-11 23:56:06,699 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 29 selfloop transitions, 15 changer transitions 0/58 dead transitions. [2024-10-11 23:56:06,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 58 transitions, 318 flow [2024-10-11 23:56:06,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:56:06,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:56:06,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 250 transitions. [2024-10-11 23:56:06,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2024-10-11 23:56:06,702 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 182 flow. Second operand 15 states and 250 transitions. [2024-10-11 23:56:06,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 58 transitions, 318 flow [2024-10-11 23:56:06,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 58 transitions, 318 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:56:06,705 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 279 flow [2024-10-11 23:56:06,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=55, 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=15, PETRI_FLOW=279, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2024-10-11 23:56:06,706 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 34 predicate places. [2024-10-11 23:56:06,706 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 279 flow [2024-10-11 23:56:06,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 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) [2024-10-11 23:56:06,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:06,707 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:06,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 23:56:06,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-11 23:56:06,909 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:06,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:06,909 INFO L85 PathProgramCache]: Analyzing trace with hash 558980282, now seen corresponding path program 2 times [2024-10-11 23:56:06,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:06,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213745557] [2024-10-11 23:56:06,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:06,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:07,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:07,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213745557] [2024-10-11 23:56:07,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213745557] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:07,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693838643] [2024-10-11 23:56:07,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 23:56:07,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:07,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:07,199 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:07,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 23:56:07,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 23:56:07,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:56:07,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 23:56:07,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:07,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-11 23:56:07,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-10-11 23:56:07,424 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-11 23:56:07,424 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:56:07,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693838643] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:07,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:56:07,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 19 [2024-10-11 23:56:07,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867136357] [2024-10-11 23:56:07,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:07,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:56:07,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:07,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:56:07,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-10-11 23:56:07,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-11 23:56:07,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 58 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:07,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:07,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-11 23:56:07,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:07,618 INFO L124 PetriNetUnfolderBase]: 170/459 cut-off events. [2024-10-11 23:56:07,618 INFO L125 PetriNetUnfolderBase]: For 241/254 co-relation queries the response was YES. [2024-10-11 23:56:07,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 459 events. 170/459 cut-off events. For 241/254 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2131 event pairs, 30 based on Foata normal form. 14/438 useless extension candidates. Maximal degree in co-relation 949. Up to 218 conditions per place. [2024-10-11 23:56:07,622 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 68 selfloop transitions, 12 changer transitions 0/92 dead transitions. [2024-10-11 23:56:07,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 92 transitions, 545 flow [2024-10-11 23:56:07,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:56:07,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:56:07,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-10-11 23:56:07,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2024-10-11 23:56:07,624 INFO L175 Difference]: Start difference. First operand has 73 places, 58 transitions, 279 flow. Second operand 6 states and 147 transitions. [2024-10-11 23:56:07,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 92 transitions, 545 flow [2024-10-11 23:56:07,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 92 transitions, 535 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-11 23:56:07,629 INFO L231 Difference]: Finished difference. Result has 79 places, 65 transitions, 357 flow [2024-10-11 23:56:07,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=357, PETRI_PLACES=79, PETRI_TRANSITIONS=65} [2024-10-11 23:56:07,630 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 40 predicate places. [2024-10-11 23:56:07,631 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 65 transitions, 357 flow [2024-10-11 23:56:07,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:07,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:07,631 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:07,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 23:56:07,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:07,832 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:07,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:07,832 INFO L85 PathProgramCache]: Analyzing trace with hash -506014735, now seen corresponding path program 1 times [2024-10-11 23:56:07,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:07,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440708888] [2024-10-11 23:56:07,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:07,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-11 23:56:07,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:07,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440708888] [2024-10-11 23:56:07,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440708888] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:07,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:07,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:56:07,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386422100] [2024-10-11 23:56:07,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:07,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:56:07,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:07,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:56:07,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 23:56:07,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-11 23:56:07,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 65 transitions, 357 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:07,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:07,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-11 23:56:07,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:08,134 INFO L124 PetriNetUnfolderBase]: 154/429 cut-off events. [2024-10-11 23:56:08,134 INFO L125 PetriNetUnfolderBase]: For 481/498 co-relation queries the response was YES. [2024-10-11 23:56:08,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 429 events. 154/429 cut-off events. For 481/498 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1982 event pairs, 34 based on Foata normal form. 18/429 useless extension candidates. Maximal degree in co-relation 1019. Up to 236 conditions per place. [2024-10-11 23:56:08,137 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 66 selfloop transitions, 10 changer transitions 0/88 dead transitions. [2024-10-11 23:56:08,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 577 flow [2024-10-11 23:56:08,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:56:08,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:56:08,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-10-11 23:56:08,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-10-11 23:56:08,138 INFO L175 Difference]: Start difference. First operand has 79 places, 65 transitions, 357 flow. Second operand 6 states and 144 transitions. [2024-10-11 23:56:08,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 577 flow [2024-10-11 23:56:08,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 88 transitions, 569 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:56:08,142 INFO L231 Difference]: Finished difference. Result has 83 places, 64 transitions, 365 flow [2024-10-11 23:56:08,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=365, PETRI_PLACES=83, PETRI_TRANSITIONS=64} [2024-10-11 23:56:08,143 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2024-10-11 23:56:08,143 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 64 transitions, 365 flow [2024-10-11 23:56:08,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:08,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:08,144 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:08,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 23:56:08,144 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:08,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:08,144 INFO L85 PathProgramCache]: Analyzing trace with hash 148519831, now seen corresponding path program 1 times [2024-10-11 23:56:08,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:08,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831125992] [2024-10-11 23:56:08,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:08,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:08,231 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-11 23:56:08,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:08,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831125992] [2024-10-11 23:56:08,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831125992] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:08,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:08,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:56:08,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634961403] [2024-10-11 23:56:08,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:08,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:56:08,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:08,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:56:08,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 23:56:08,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-11 23:56:08,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 64 transitions, 365 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:08,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:08,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-11 23:56:08,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:08,361 INFO L124 PetriNetUnfolderBase]: 156/433 cut-off events. [2024-10-11 23:56:08,361 INFO L125 PetriNetUnfolderBase]: For 490/495 co-relation queries the response was YES. [2024-10-11 23:56:08,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 433 events. 156/433 cut-off events. For 490/495 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1974 event pairs, 36 based on Foata normal form. 16/431 useless extension candidates. Maximal degree in co-relation 1054. Up to 238 conditions per place. [2024-10-11 23:56:08,364 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 65 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2024-10-11 23:56:08,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 591 flow [2024-10-11 23:56:08,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:56:08,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:56:08,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-10-11 23:56:08,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-10-11 23:56:08,365 INFO L175 Difference]: Start difference. First operand has 83 places, 64 transitions, 365 flow. Second operand 6 states and 144 transitions. [2024-10-11 23:56:08,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 591 flow [2024-10-11 23:56:08,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 87 transitions, 556 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 23:56:08,369 INFO L231 Difference]: Finished difference. Result has 83 places, 63 transitions, 356 flow [2024-10-11 23:56:08,369 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=83, PETRI_TRANSITIONS=63} [2024-10-11 23:56:08,369 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2024-10-11 23:56:08,369 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 63 transitions, 356 flow [2024-10-11 23:56:08,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:08,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:08,370 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:08,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 23:56:08,370 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:08,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:08,370 INFO L85 PathProgramCache]: Analyzing trace with hash 650480602, now seen corresponding path program 1 times [2024-10-11 23:56:08,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:08,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610660551] [2024-10-11 23:56:08,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:08,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-11 23:56:08,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:08,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610660551] [2024-10-11 23:56:08,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610660551] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:08,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:08,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:56:08,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537279587] [2024-10-11 23:56:08,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:08,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:56:08,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:08,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:56:08,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:56:08,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-11 23:56:08,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 63 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-10-11 23:56:08,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:08,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-11 23:56:08,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:08,552 INFO L124 PetriNetUnfolderBase]: 213/561 cut-off events. [2024-10-11 23:56:08,552 INFO L125 PetriNetUnfolderBase]: For 481/493 co-relation queries the response was YES. [2024-10-11 23:56:08,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1464 conditions, 561 events. 213/561 cut-off events. For 481/493 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2627 event pairs, 68 based on Foata normal form. 24/570 useless extension candidates. Maximal degree in co-relation 1358. Up to 245 conditions per place. [2024-10-11 23:56:08,555 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 80 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2024-10-11 23:56:08,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 94 transitions, 644 flow [2024-10-11 23:56:08,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:56:08,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:56:08,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-10-11 23:56:08,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6987179487179487 [2024-10-11 23:56:08,556 INFO L175 Difference]: Start difference. First operand has 83 places, 63 transitions, 356 flow. Second operand 4 states and 109 transitions. [2024-10-11 23:56:08,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 94 transitions, 644 flow [2024-10-11 23:56:08,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 94 transitions, 611 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 23:56:08,559 INFO L231 Difference]: Finished difference. Result has 83 places, 65 transitions, 357 flow [2024-10-11 23:56:08,560 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=357, PETRI_PLACES=83, PETRI_TRANSITIONS=65} [2024-10-11 23:56:08,560 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2024-10-11 23:56:08,560 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 65 transitions, 357 flow [2024-10-11 23:56:08,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-10-11 23:56:08,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:08,561 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:08,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 23:56:08,561 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:08,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:08,561 INFO L85 PathProgramCache]: Analyzing trace with hash 738242557, now seen corresponding path program 1 times [2024-10-11 23:56:08,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:08,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964949187] [2024-10-11 23:56:08,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:08,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-11 23:56:08,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:08,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964949187] [2024-10-11 23:56:08,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964949187] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:08,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:08,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:56:08,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505026552] [2024-10-11 23:56:08,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:08,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:56:08,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:08,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:56:08,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:56:08,619 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-11 23:56:08,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 65 transitions, 357 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-10-11 23:56:08,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:08,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-11 23:56:08,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:08,750 INFO L124 PetriNetUnfolderBase]: 318/846 cut-off events. [2024-10-11 23:56:08,751 INFO L125 PetriNetUnfolderBase]: For 634/647 co-relation queries the response was YES. [2024-10-11 23:56:08,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2187 conditions, 846 events. 318/846 cut-off events. For 634/647 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4315 event pairs, 152 based on Foata normal form. 33/862 useless extension candidates. Maximal degree in co-relation 2080. Up to 394 conditions per place. [2024-10-11 23:56:08,755 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 86 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2024-10-11 23:56:08,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 100 transitions, 683 flow [2024-10-11 23:56:08,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:56:08,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:56:08,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-10-11 23:56:08,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6987179487179487 [2024-10-11 23:56:08,757 INFO L175 Difference]: Start difference. First operand has 83 places, 65 transitions, 357 flow. Second operand 4 states and 109 transitions. [2024-10-11 23:56:08,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 100 transitions, 683 flow [2024-10-11 23:56:08,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 100 transitions, 677 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:56:08,761 INFO L231 Difference]: Finished difference. Result has 87 places, 67 transitions, 379 flow [2024-10-11 23:56:08,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=379, PETRI_PLACES=87, PETRI_TRANSITIONS=67} [2024-10-11 23:56:08,762 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 48 predicate places. [2024-10-11 23:56:08,762 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 67 transitions, 379 flow [2024-10-11 23:56:08,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-10-11 23:56:08,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:08,763 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:08,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 23:56:08,763 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:08,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:08,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1759261818, now seen corresponding path program 1 times [2024-10-11 23:56:08,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:08,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124144938] [2024-10-11 23:56:08,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:08,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:08,977 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:08,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:08,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124144938] [2024-10-11 23:56:08,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124144938] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:08,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549503237] [2024-10-11 23:56:08,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:08,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:08,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:08,980 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:08,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 23:56:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:09,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 23:56:09,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:09,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:09,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549503237] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:09,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:09,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-10-11 23:56:09,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781146436] [2024-10-11 23:56:09,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:09,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 23:56:09,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:09,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 23:56:09,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-10-11 23:56:09,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-11 23:56:09,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 67 transitions, 379 flow. Second operand has 23 states, 23 states have (on average 15.521739130434783) internal successors, (357), 23 states have internal predecessors, (357), 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) [2024-10-11 23:56:09,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:09,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-11 23:56:09,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:09,546 INFO L124 PetriNetUnfolderBase]: 284/828 cut-off events. [2024-10-11 23:56:09,546 INFO L125 PetriNetUnfolderBase]: For 728/740 co-relation queries the response was YES. [2024-10-11 23:56:09,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 828 events. 284/828 cut-off events. For 728/740 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4373 event pairs, 190 based on Foata normal form. 3/831 useless extension candidates. Maximal degree in co-relation 2113. Up to 564 conditions per place. [2024-10-11 23:56:09,551 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 39 selfloop transitions, 21 changer transitions 0/73 dead transitions. [2024-10-11 23:56:09,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 73 transitions, 553 flow [2024-10-11 23:56:09,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 23:56:09,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 23:56:09,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 339 transitions. [2024-10-11 23:56:09,553 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4139194139194139 [2024-10-11 23:56:09,554 INFO L175 Difference]: Start difference. First operand has 87 places, 67 transitions, 379 flow. Second operand 21 states and 339 transitions. [2024-10-11 23:56:09,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 73 transitions, 553 flow [2024-10-11 23:56:09,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 73 transitions, 551 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:56:09,558 INFO L231 Difference]: Finished difference. Result has 109 places, 73 transitions, 488 flow [2024-10-11 23:56:09,558 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=488, PETRI_PLACES=109, PETRI_TRANSITIONS=73} [2024-10-11 23:56:09,559 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 70 predicate places. [2024-10-11 23:56:09,559 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 73 transitions, 488 flow [2024-10-11 23:56:09,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 15.521739130434783) internal successors, (357), 23 states have internal predecessors, (357), 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) [2024-10-11 23:56:09,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:09,560 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:09,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 23:56:09,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 23:56:09,761 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:09,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:09,761 INFO L85 PathProgramCache]: Analyzing trace with hash 212493913, now seen corresponding path program 2 times [2024-10-11 23:56:09,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:09,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812349519] [2024-10-11 23:56:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:09,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:10,089 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:10,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:10,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812349519] [2024-10-11 23:56:10,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812349519] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:10,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:10,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:10,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962243866] [2024-10-11 23:56:10,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:10,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:10,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:10,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:10,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:10,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-10-11 23:56:10,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 73 transitions, 488 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:10,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:10,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-10-11 23:56:10,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:10,543 INFO L124 PetriNetUnfolderBase]: 512/1260 cut-off events. [2024-10-11 23:56:10,543 INFO L125 PetriNetUnfolderBase]: For 1427/1431 co-relation queries the response was YES. [2024-10-11 23:56:10,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3595 conditions, 1260 events. 512/1260 cut-off events. For 1427/1431 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7035 event pairs, 146 based on Foata normal form. 22/1280 useless extension candidates. Maximal degree in co-relation 3422. Up to 664 conditions per place. [2024-10-11 23:56:10,551 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 106 selfloop transitions, 39 changer transitions 0/154 dead transitions. [2024-10-11 23:56:10,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 154 transitions, 1157 flow [2024-10-11 23:56:10,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:56:10,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:56:10,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 288 transitions. [2024-10-11 23:56:10,553 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2024-10-11 23:56:10,554 INFO L175 Difference]: Start difference. First operand has 109 places, 73 transitions, 488 flow. Second operand 15 states and 288 transitions. [2024-10-11 23:56:10,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 154 transitions, 1157 flow [2024-10-11 23:56:10,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 154 transitions, 1114 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-10-11 23:56:10,563 INFO L231 Difference]: Finished difference. Result has 116 places, 100 transitions, 774 flow [2024-10-11 23:56:10,563 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=774, PETRI_PLACES=116, PETRI_TRANSITIONS=100} [2024-10-11 23:56:10,563 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 77 predicate places. [2024-10-11 23:56:10,563 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 100 transitions, 774 flow [2024-10-11 23:56:10,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:10,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:10,564 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:10,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 23:56:10,564 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:10,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:10,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1464417878, now seen corresponding path program 1 times [2024-10-11 23:56:10,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:10,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815307871] [2024-10-11 23:56:10,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:10,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:10,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:10,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815307871] [2024-10-11 23:56:10,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815307871] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:10,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:10,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:10,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180269428] [2024-10-11 23:56:10,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:10,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:10,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:10,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:10,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:10,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-10-11 23:56:10,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 100 transitions, 774 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:10,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:10,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-10-11 23:56:10,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:11,321 INFO L124 PetriNetUnfolderBase]: 611/1478 cut-off events. [2024-10-11 23:56:11,322 INFO L125 PetriNetUnfolderBase]: For 3475/3477 co-relation queries the response was YES. [2024-10-11 23:56:11,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4857 conditions, 1478 events. 611/1478 cut-off events. For 3475/3477 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8676 event pairs, 163 based on Foata normal form. 20/1497 useless extension candidates. Maximal degree in co-relation 4698. Up to 818 conditions per place. [2024-10-11 23:56:11,329 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 124 selfloop transitions, 46 changer transitions 0/179 dead transitions. [2024-10-11 23:56:11,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 179 transitions, 1583 flow [2024-10-11 23:56:11,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:56:11,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:56:11,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 288 transitions. [2024-10-11 23:56:11,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2024-10-11 23:56:11,331 INFO L175 Difference]: Start difference. First operand has 116 places, 100 transitions, 774 flow. Second operand 15 states and 288 transitions. [2024-10-11 23:56:11,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 179 transitions, 1583 flow [2024-10-11 23:56:11,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 179 transitions, 1537 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-10-11 23:56:11,339 INFO L231 Difference]: Finished difference. Result has 130 places, 121 transitions, 1087 flow [2024-10-11 23:56:11,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1087, PETRI_PLACES=130, PETRI_TRANSITIONS=121} [2024-10-11 23:56:11,340 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 91 predicate places. [2024-10-11 23:56:11,340 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 121 transitions, 1087 flow [2024-10-11 23:56:11,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:11,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:11,341 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:11,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 23:56:11,341 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:11,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:11,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1439148269, now seen corresponding path program 3 times [2024-10-11 23:56:11,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:11,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271607089] [2024-10-11 23:56:11,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:11,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:11,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:11,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271607089] [2024-10-11 23:56:11,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271607089] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:11,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:11,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:11,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663980629] [2024-10-11 23:56:11,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:11,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:11,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:11,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:11,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:11,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-10-11 23:56:11,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 121 transitions, 1087 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:11,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:11,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-10-11 23:56:11,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:11,966 INFO L124 PetriNetUnfolderBase]: 733/1735 cut-off events. [2024-10-11 23:56:11,967 INFO L125 PetriNetUnfolderBase]: For 6660/6665 co-relation queries the response was YES. [2024-10-11 23:56:11,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6449 conditions, 1735 events. 733/1735 cut-off events. For 6660/6665 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 10583 event pairs, 212 based on Foata normal form. 20/1754 useless extension candidates. Maximal degree in co-relation 6286. Up to 965 conditions per place. [2024-10-11 23:56:11,980 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 133 selfloop transitions, 55 changer transitions 0/197 dead transitions. [2024-10-11 23:56:11,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 197 transitions, 1965 flow [2024-10-11 23:56:11,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 23:56:11,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 23:56:11,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 245 transitions. [2024-10-11 23:56:11,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5235042735042735 [2024-10-11 23:56:11,981 INFO L175 Difference]: Start difference. First operand has 130 places, 121 transitions, 1087 flow. Second operand 12 states and 245 transitions. [2024-10-11 23:56:11,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 197 transitions, 1965 flow [2024-10-11 23:56:11,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 197 transitions, 1880 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-10-11 23:56:11,997 INFO L231 Difference]: Finished difference. Result has 138 places, 137 transitions, 1376 flow [2024-10-11 23:56:11,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1376, PETRI_PLACES=138, PETRI_TRANSITIONS=137} [2024-10-11 23:56:11,998 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 99 predicate places. [2024-10-11 23:56:11,998 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 137 transitions, 1376 flow [2024-10-11 23:56:11,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:11,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:11,998 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:11,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 23:56:11,998 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:11,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:11,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1239204962, now seen corresponding path program 2 times [2024-10-11 23:56:11,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:11,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775032249] [2024-10-11 23:56:11,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:11,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:12,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:12,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775032249] [2024-10-11 23:56:12,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775032249] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:12,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:12,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:12,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088052704] [2024-10-11 23:56:12,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:12,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:12,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:12,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:12,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:12,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-10-11 23:56:12,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 137 transitions, 1376 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:12,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:12,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-10-11 23:56:12,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:12,776 INFO L124 PetriNetUnfolderBase]: 826/1927 cut-off events. [2024-10-11 23:56:12,776 INFO L125 PetriNetUnfolderBase]: For 11020/11028 co-relation queries the response was YES. [2024-10-11 23:56:12,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7930 conditions, 1927 events. 826/1927 cut-off events. For 11020/11028 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 12133 event pairs, 236 based on Foata normal form. 20/1945 useless extension candidates. Maximal degree in co-relation 7764. Up to 1033 conditions per place. [2024-10-11 23:56:12,789 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 140 selfloop transitions, 62 changer transitions 0/211 dead transitions. [2024-10-11 23:56:12,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 211 transitions, 2309 flow [2024-10-11 23:56:12,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 23:56:12,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 23:56:12,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 296 transitions. [2024-10-11 23:56:12,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-10-11 23:56:12,790 INFO L175 Difference]: Start difference. First operand has 138 places, 137 transitions, 1376 flow. Second operand 16 states and 296 transitions. [2024-10-11 23:56:12,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 211 transitions, 2309 flow [2024-10-11 23:56:12,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 211 transitions, 2226 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-10-11 23:56:12,815 INFO L231 Difference]: Finished difference. Result has 151 places, 148 transitions, 1644 flow [2024-10-11 23:56:12,816 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1644, PETRI_PLACES=151, PETRI_TRANSITIONS=148} [2024-10-11 23:56:12,816 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 112 predicate places. [2024-10-11 23:56:12,816 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 148 transitions, 1644 flow [2024-10-11 23:56:12,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:12,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:12,816 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:12,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 23:56:12,816 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:12,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:12,817 INFO L85 PathProgramCache]: Analyzing trace with hash -2144273054, now seen corresponding path program 3 times [2024-10-11 23:56:12,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:12,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034836068] [2024-10-11 23:56:12,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:12,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:13,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:13,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034836068] [2024-10-11 23:56:13,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034836068] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:13,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:13,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:13,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598983125] [2024-10-11 23:56:13,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:13,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:13,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:13,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:13,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:13,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-10-11 23:56:13,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 148 transitions, 1644 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:13,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:13,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-10-11 23:56:13,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:13,637 INFO L124 PetriNetUnfolderBase]: 1037/2368 cut-off events. [2024-10-11 23:56:13,637 INFO L125 PetriNetUnfolderBase]: For 18729/18747 co-relation queries the response was YES. [2024-10-11 23:56:13,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10595 conditions, 2368 events. 1037/2368 cut-off events. For 18729/18747 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 15300 event pairs, 102 based on Foata normal form. 57/2425 useless extension candidates. Maximal degree in co-relation 10425. Up to 903 conditions per place. [2024-10-11 23:56:13,658 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 161 selfloop transitions, 107 changer transitions 0/277 dead transitions. [2024-10-11 23:56:13,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 277 transitions, 3291 flow [2024-10-11 23:56:13,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 23:56:13,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 23:56:13,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 320 transitions. [2024-10-11 23:56:13,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-10-11 23:56:13,660 INFO L175 Difference]: Start difference. First operand has 151 places, 148 transitions, 1644 flow. Second operand 16 states and 320 transitions. [2024-10-11 23:56:13,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 277 transitions, 3291 flow [2024-10-11 23:56:13,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 277 transitions, 3231 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-10-11 23:56:13,705 INFO L231 Difference]: Finished difference. Result has 163 places, 185 transitions, 2522 flow [2024-10-11 23:56:13,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2522, PETRI_PLACES=163, PETRI_TRANSITIONS=185} [2024-10-11 23:56:13,706 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 124 predicate places. [2024-10-11 23:56:13,706 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 185 transitions, 2522 flow [2024-10-11 23:56:13,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:13,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:13,706 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:13,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 23:56:13,706 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:13,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:13,707 INFO L85 PathProgramCache]: Analyzing trace with hash -422163023, now seen corresponding path program 4 times [2024-10-11 23:56:13,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:13,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856855525] [2024-10-11 23:56:13,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:13,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:13,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:13,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856855525] [2024-10-11 23:56:13,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856855525] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:13,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:13,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:13,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893350602] [2024-10-11 23:56:13,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:13,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:13,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:13,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:13,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:13,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-10-11 23:56:13,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 185 transitions, 2522 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:13,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:13,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-10-11 23:56:13,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:14,595 INFO L124 PetriNetUnfolderBase]: 1127/2526 cut-off events. [2024-10-11 23:56:14,595 INFO L125 PetriNetUnfolderBase]: For 27477/27496 co-relation queries the response was YES. [2024-10-11 23:56:14,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12750 conditions, 2526 events. 1127/2526 cut-off events. For 27477/27496 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 16513 event pairs, 299 based on Foata normal form. 21/2545 useless extension candidates. Maximal degree in co-relation 12573. Up to 1348 conditions per place. [2024-10-11 23:56:14,623 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 167 selfloop transitions, 104 changer transitions 0/280 dead transitions. [2024-10-11 23:56:14,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 280 transitions, 4099 flow [2024-10-11 23:56:14,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 23:56:14,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 23:56:14,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 295 transitions. [2024-10-11 23:56:14,624 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47275641025641024 [2024-10-11 23:56:14,624 INFO L175 Difference]: Start difference. First operand has 163 places, 185 transitions, 2522 flow. Second operand 16 states and 295 transitions. [2024-10-11 23:56:14,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 280 transitions, 4099 flow [2024-10-11 23:56:14,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 280 transitions, 3912 flow, removed 67 selfloop flow, removed 9 redundant places. [2024-10-11 23:56:14,686 INFO L231 Difference]: Finished difference. Result has 173 places, 200 transitions, 3017 flow [2024-10-11 23:56:14,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2381, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3017, PETRI_PLACES=173, PETRI_TRANSITIONS=200} [2024-10-11 23:56:14,686 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 134 predicate places. [2024-10-11 23:56:14,686 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 200 transitions, 3017 flow [2024-10-11 23:56:14,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:14,687 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:14,687 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:14,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 23:56:14,687 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:14,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:14,687 INFO L85 PathProgramCache]: Analyzing trace with hash -596526863, now seen corresponding path program 5 times [2024-10-11 23:56:14,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:14,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221585419] [2024-10-11 23:56:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:14,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:14,871 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:14,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:14,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221585419] [2024-10-11 23:56:14,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221585419] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:14,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:14,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:14,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328512008] [2024-10-11 23:56:14,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:14,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:14,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:14,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:14,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:14,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-10-11 23:56:14,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 200 transitions, 3017 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:14,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:14,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-10-11 23:56:14,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:15,605 INFO L124 PetriNetUnfolderBase]: 1236/2792 cut-off events. [2024-10-11 23:56:15,605 INFO L125 PetriNetUnfolderBase]: For 36291/36295 co-relation queries the response was YES. [2024-10-11 23:56:15,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14594 conditions, 2792 events. 1236/2792 cut-off events. For 36291/36295 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 18634 event pairs, 160 based on Foata normal form. 54/2846 useless extension candidates. Maximal degree in co-relation 14412. Up to 1067 conditions per place. [2024-10-11 23:56:15,635 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 168 selfloop transitions, 144 changer transitions 0/321 dead transitions. [2024-10-11 23:56:15,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 321 transitions, 4879 flow [2024-10-11 23:56:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 23:56:15,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 23:56:15,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 317 transitions. [2024-10-11 23:56:15,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5080128205128205 [2024-10-11 23:56:15,636 INFO L175 Difference]: Start difference. First operand has 173 places, 200 transitions, 3017 flow. Second operand 16 states and 317 transitions. [2024-10-11 23:56:15,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 321 transitions, 4879 flow [2024-10-11 23:56:15,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 321 transitions, 4759 flow, removed 22 selfloop flow, removed 12 redundant places. [2024-10-11 23:56:15,738 INFO L231 Difference]: Finished difference. Result has 182 places, 226 transitions, 3925 flow [2024-10-11 23:56:15,738 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2909, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3925, PETRI_PLACES=182, PETRI_TRANSITIONS=226} [2024-10-11 23:56:15,739 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 143 predicate places. [2024-10-11 23:56:15,739 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 226 transitions, 3925 flow [2024-10-11 23:56:15,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:15,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:15,740 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:15,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 23:56:15,740 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:15,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:15,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1847685804, now seen corresponding path program 1 times [2024-10-11 23:56:15,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:15,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501290114] [2024-10-11 23:56:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:15,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:16,031 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:16,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:16,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501290114] [2024-10-11 23:56:16,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501290114] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:16,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:16,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:16,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280907926] [2024-10-11 23:56:16,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:16,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:16,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:16,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:16,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:16,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-10-11 23:56:16,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 226 transitions, 3925 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:16,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:16,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-10-11 23:56:16,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:16,930 INFO L124 PetriNetUnfolderBase]: 1215/2697 cut-off events. [2024-10-11 23:56:16,931 INFO L125 PetriNetUnfolderBase]: For 44454/44495 co-relation queries the response was YES. [2024-10-11 23:56:16,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15697 conditions, 2697 events. 1215/2697 cut-off events. For 44454/44495 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 17668 event pairs, 405 based on Foata normal form. 21/2716 useless extension candidates. Maximal degree in co-relation 15508. Up to 2065 conditions per place. [2024-10-11 23:56:16,960 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 230 selfloop transitions, 52 changer transitions 0/291 dead transitions. [2024-10-11 23:56:16,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 291 transitions, 5199 flow [2024-10-11 23:56:16,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:56:16,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:56:16,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 281 transitions. [2024-10-11 23:56:16,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48034188034188036 [2024-10-11 23:56:16,962 INFO L175 Difference]: Start difference. First operand has 182 places, 226 transitions, 3925 flow. Second operand 15 states and 281 transitions. [2024-10-11 23:56:16,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 291 transitions, 5199 flow [2024-10-11 23:56:17,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 291 transitions, 5053 flow, removed 37 selfloop flow, removed 10 redundant places. [2024-10-11 23:56:17,113 INFO L231 Difference]: Finished difference. Result has 187 places, 226 transitions, 3919 flow [2024-10-11 23:56:17,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3785, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3919, PETRI_PLACES=187, PETRI_TRANSITIONS=226} [2024-10-11 23:56:17,114 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 148 predicate places. [2024-10-11 23:56:17,114 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 226 transitions, 3919 flow [2024-10-11 23:56:17,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:17,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:17,115 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:17,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-11 23:56:17,115 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:17,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:17,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1663923652, now seen corresponding path program 1 times [2024-10-11 23:56:17,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:17,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706236012] [2024-10-11 23:56:17,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:17,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:17,383 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:17,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:17,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706236012] [2024-10-11 23:56:17,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706236012] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:17,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:17,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:17,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473378810] [2024-10-11 23:56:17,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:17,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:17,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:17,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:17,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:17,408 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-10-11 23:56:17,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 226 transitions, 3919 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:17,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:17,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-10-11 23:56:17,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:18,067 INFO L124 PetriNetUnfolderBase]: 1194/2684 cut-off events. [2024-10-11 23:56:18,067 INFO L125 PetriNetUnfolderBase]: For 43741/43772 co-relation queries the response was YES. [2024-10-11 23:56:18,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15429 conditions, 2684 events. 1194/2684 cut-off events. For 43741/43772 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 17650 event pairs, 406 based on Foata normal form. 21/2703 useless extension candidates. Maximal degree in co-relation 15239. Up to 2038 conditions per place. [2024-10-11 23:56:18,093 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 212 selfloop transitions, 61 changer transitions 0/282 dead transitions. [2024-10-11 23:56:18,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 282 transitions, 4968 flow [2024-10-11 23:56:18,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 23:56:18,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 23:56:18,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 238 transitions. [2024-10-11 23:56:18,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5085470085470085 [2024-10-11 23:56:18,095 INFO L175 Difference]: Start difference. First operand has 187 places, 226 transitions, 3919 flow. Second operand 12 states and 238 transitions. [2024-10-11 23:56:18,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 282 transitions, 4968 flow [2024-10-11 23:56:18,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 282 transitions, 4874 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-10-11 23:56:18,215 INFO L231 Difference]: Finished difference. Result has 186 places, 225 transitions, 3940 flow [2024-10-11 23:56:18,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3818, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3940, PETRI_PLACES=186, PETRI_TRANSITIONS=225} [2024-10-11 23:56:18,216 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 147 predicate places. [2024-10-11 23:56:18,216 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 225 transitions, 3940 flow [2024-10-11 23:56:18,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:18,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:18,216 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:18,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 23:56:18,217 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:18,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:18,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1308595796, now seen corresponding path program 2 times [2024-10-11 23:56:18,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:18,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917407648] [2024-10-11 23:56:18,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:18,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:18,455 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:18,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:18,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917407648] [2024-10-11 23:56:18,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917407648] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:18,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:18,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:18,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023002015] [2024-10-11 23:56:18,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:18,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:18,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:18,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:18,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:18,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-10-11 23:56:18,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 225 transitions, 3940 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:18,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:18,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-10-11 23:56:18,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:19,150 INFO L124 PetriNetUnfolderBase]: 1173/2641 cut-off events. [2024-10-11 23:56:19,150 INFO L125 PetriNetUnfolderBase]: For 42887/42927 co-relation queries the response was YES. [2024-10-11 23:56:19,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15134 conditions, 2641 events. 1173/2641 cut-off events. For 42887/42927 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 17403 event pairs, 378 based on Foata normal form. 21/2660 useless extension candidates. Maximal degree in co-relation 14945. Up to 1947 conditions per place. [2024-10-11 23:56:19,173 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 208 selfloop transitions, 66 changer transitions 0/283 dead transitions. [2024-10-11 23:56:19,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 283 transitions, 5078 flow [2024-10-11 23:56:19,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 23:56:19,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 23:56:19,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 289 transitions. [2024-10-11 23:56:19,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46314102564102566 [2024-10-11 23:56:19,175 INFO L175 Difference]: Start difference. First operand has 186 places, 225 transitions, 3940 flow. Second operand 16 states and 289 transitions. [2024-10-11 23:56:19,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 283 transitions, 5078 flow [2024-10-11 23:56:19,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 283 transitions, 4987 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-10-11 23:56:19,291 INFO L231 Difference]: Finished difference. Result has 192 places, 224 transitions, 3973 flow [2024-10-11 23:56:19,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3841, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3973, PETRI_PLACES=192, PETRI_TRANSITIONS=224} [2024-10-11 23:56:19,292 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 153 predicate places. [2024-10-11 23:56:19,292 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 224 transitions, 3973 flow [2024-10-11 23:56:19,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:19,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:19,292 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:19,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 23:56:19,292 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:19,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:19,293 INFO L85 PathProgramCache]: Analyzing trace with hash -2047955000, now seen corresponding path program 3 times [2024-10-11 23:56:19,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:19,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234747539] [2024-10-11 23:56:19,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:19,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:19,499 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:19,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:19,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234747539] [2024-10-11 23:56:19,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234747539] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:19,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:19,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:19,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439727539] [2024-10-11 23:56:19,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:19,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:19,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:19,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:19,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:19,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-10-11 23:56:19,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 224 transitions, 3973 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:19,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:19,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-10-11 23:56:19,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:20,107 INFO L124 PetriNetUnfolderBase]: 1152/2604 cut-off events. [2024-10-11 23:56:20,107 INFO L125 PetriNetUnfolderBase]: For 42549/42586 co-relation queries the response was YES. [2024-10-11 23:56:20,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14945 conditions, 2604 events. 1152/2604 cut-off events. For 42549/42586 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 17163 event pairs, 324 based on Foata normal form. 21/2624 useless extension candidates. Maximal degree in co-relation 14757. Up to 1826 conditions per place. [2024-10-11 23:56:20,130 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 214 selfloop transitions, 77 changer transitions 0/300 dead transitions. [2024-10-11 23:56:20,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 300 transitions, 5387 flow [2024-10-11 23:56:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:56:20,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:56:20,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 283 transitions. [2024-10-11 23:56:20,131 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48376068376068376 [2024-10-11 23:56:20,132 INFO L175 Difference]: Start difference. First operand has 192 places, 224 transitions, 3973 flow. Second operand 15 states and 283 transitions. [2024-10-11 23:56:20,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 300 transitions, 5387 flow [2024-10-11 23:56:20,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 300 transitions, 5264 flow, removed 0 selfloop flow, removed 14 redundant places. [2024-10-11 23:56:20,249 INFO L231 Difference]: Finished difference. Result has 196 places, 234 transitions, 4273 flow [2024-10-11 23:56:20,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3850, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4273, PETRI_PLACES=196, PETRI_TRANSITIONS=234} [2024-10-11 23:56:20,250 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 157 predicate places. [2024-10-11 23:56:20,250 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 234 transitions, 4273 flow [2024-10-11 23:56:20,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:20,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:20,250 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:20,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-11 23:56:20,250 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:20,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:20,250 INFO L85 PathProgramCache]: Analyzing trace with hash -293727036, now seen corresponding path program 2 times [2024-10-11 23:56:20,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:20,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184465603] [2024-10-11 23:56:20,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:20,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:20,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:20,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184465603] [2024-10-11 23:56:20,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184465603] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:20,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:20,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:20,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226817361] [2024-10-11 23:56:20,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:20,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:20,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:20,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:20,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:20,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-10-11 23:56:20,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 234 transitions, 4273 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:20,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:20,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-10-11 23:56:20,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:21,168 INFO L124 PetriNetUnfolderBase]: 1131/2585 cut-off events. [2024-10-11 23:56:21,168 INFO L125 PetriNetUnfolderBase]: For 44676/44707 co-relation queries the response was YES. [2024-10-11 23:56:21,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15230 conditions, 2585 events. 1131/2585 cut-off events. For 44676/44707 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 17077 event pairs, 377 based on Foata normal form. 21/2604 useless extension candidates. Maximal degree in co-relation 15038. Up to 1950 conditions per place. [2024-10-11 23:56:21,186 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 222 selfloop transitions, 61 changer transitions 0/292 dead transitions. [2024-10-11 23:56:21,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 292 transitions, 5401 flow [2024-10-11 23:56:21,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:56:21,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:56:21,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 281 transitions. [2024-10-11 23:56:21,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48034188034188036 [2024-10-11 23:56:21,190 INFO L175 Difference]: Start difference. First operand has 196 places, 234 transitions, 4273 flow. Second operand 15 states and 281 transitions. [2024-10-11 23:56:21,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 292 transitions, 5401 flow [2024-10-11 23:56:21,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 292 transitions, 5277 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-10-11 23:56:21,308 INFO L231 Difference]: Finished difference. Result has 199 places, 233 transitions, 4267 flow [2024-10-11 23:56:21,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4145, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4267, PETRI_PLACES=199, PETRI_TRANSITIONS=233} [2024-10-11 23:56:21,309 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 160 predicate places. [2024-10-11 23:56:21,309 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 233 transitions, 4267 flow [2024-10-11 23:56:21,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:21,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:21,309 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:21,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-11 23:56:21,310 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:21,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:21,310 INFO L85 PathProgramCache]: Analyzing trace with hash -202151552, now seen corresponding path program 3 times [2024-10-11 23:56:21,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:21,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900289882] [2024-10-11 23:56:21,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:21,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:21,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:21,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900289882] [2024-10-11 23:56:21,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900289882] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:21,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:21,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:21,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557329464] [2024-10-11 23:56:21,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:21,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:21,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:21,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:21,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:21,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-10-11 23:56:21,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 233 transitions, 4267 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:21,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:21,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-10-11 23:56:21,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:22,181 INFO L124 PetriNetUnfolderBase]: 1110/2578 cut-off events. [2024-10-11 23:56:22,181 INFO L125 PetriNetUnfolderBase]: For 44413/44438 co-relation queries the response was YES. [2024-10-11 23:56:22,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15020 conditions, 2578 events. 1110/2578 cut-off events. For 44413/44438 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 17195 event pairs, 349 based on Foata normal form. 21/2597 useless extension candidates. Maximal degree in co-relation 14829. Up to 1806 conditions per place. [2024-10-11 23:56:22,204 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 189 selfloop transitions, 87 changer transitions 0/285 dead transitions. [2024-10-11 23:56:22,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 285 transitions, 5291 flow [2024-10-11 23:56:22,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 23:56:22,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 23:56:22,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 289 transitions. [2024-10-11 23:56:22,208 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46314102564102566 [2024-10-11 23:56:22,208 INFO L175 Difference]: Start difference. First operand has 199 places, 233 transitions, 4267 flow. Second operand 16 states and 289 transitions. [2024-10-11 23:56:22,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 285 transitions, 5291 flow [2024-10-11 23:56:22,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 285 transitions, 5205 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-10-11 23:56:22,340 INFO L231 Difference]: Finished difference. Result has 202 places, 232 transitions, 4344 flow [2024-10-11 23:56:22,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4170, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4344, PETRI_PLACES=202, PETRI_TRANSITIONS=232} [2024-10-11 23:56:22,341 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 163 predicate places. [2024-10-11 23:56:22,341 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 232 transitions, 4344 flow [2024-10-11 23:56:22,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:22,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:22,341 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:22,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-11 23:56:22,341 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:22,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:22,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1312463296, now seen corresponding path program 4 times [2024-10-11 23:56:22,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:22,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201843913] [2024-10-11 23:56:22,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:22,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:22,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:22,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201843913] [2024-10-11 23:56:22,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201843913] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:22,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:22,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:56:22,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816314542] [2024-10-11 23:56:22,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:22,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:56:22,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:22,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:56:22,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:22,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-10-11 23:56:22,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 232 transitions, 4344 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:22,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:22,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-10-11 23:56:22,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:23,149 INFO L124 PetriNetUnfolderBase]: 1089/2542 cut-off events. [2024-10-11 23:56:23,149 INFO L125 PetriNetUnfolderBase]: For 44471/44493 co-relation queries the response was YES. [2024-10-11 23:56:23,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14945 conditions, 2542 events. 1089/2542 cut-off events. For 44471/44493 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 17004 event pairs, 287 based on Foata normal form. 21/2562 useless extension candidates. Maximal degree in co-relation 14754. Up to 1685 conditions per place. [2024-10-11 23:56:23,169 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 186 selfloop transitions, 100 changer transitions 0/295 dead transitions. [2024-10-11 23:56:23,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 295 transitions, 5518 flow [2024-10-11 23:56:23,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:56:23,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:56:23,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 283 transitions. [2024-10-11 23:56:23,170 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48376068376068376 [2024-10-11 23:56:23,170 INFO L175 Difference]: Start difference. First operand has 202 places, 232 transitions, 4344 flow. Second operand 15 states and 283 transitions. [2024-10-11 23:56:23,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 295 transitions, 5518 flow [2024-10-11 23:56:23,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 295 transitions, 5348 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-10-11 23:56:23,294 INFO L231 Difference]: Finished difference. Result has 207 places, 237 transitions, 4558 flow [2024-10-11 23:56:23,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4174, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4558, PETRI_PLACES=207, PETRI_TRANSITIONS=237} [2024-10-11 23:56:23,294 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 168 predicate places. [2024-10-11 23:56:23,294 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 237 transitions, 4558 flow [2024-10-11 23:56:23,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2024-10-11 23:56:23,295 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:23,295 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:23,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-11 23:56:23,295 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:23,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:23,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1935213108, now seen corresponding path program 1 times [2024-10-11 23:56:23,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:23,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600100840] [2024-10-11 23:56:23,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:23,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:23,491 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:23,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:23,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600100840] [2024-10-11 23:56:23,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600100840] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:23,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519835034] [2024-10-11 23:56:23,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:23,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:23,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:23,493 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:23,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 23:56:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:23,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-11 23:56:23,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:23,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-11 23:56:23,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-10-11 23:56:25,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2024-10-11 23:56:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:25,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:30,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519835034] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:30,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:30,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 22 [2024-10-11 23:56:30,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84961631] [2024-10-11 23:56:30,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:30,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 23:56:30,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:30,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 23:56:30,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=415, Unknown=7, NotChecked=0, Total=552 [2024-10-11 23:56:33,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-10-11 23:56:33,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 237 transitions, 4558 flow. Second operand has 24 states, 24 states have (on average 12.5) internal successors, (300), 24 states have internal predecessors, (300), 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) [2024-10-11 23:56:33,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:33,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-10-11 23:56:33,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:40,626 INFO L124 PetriNetUnfolderBase]: 1401/3123 cut-off events. [2024-10-11 23:56:40,626 INFO L125 PetriNetUnfolderBase]: For 55754/55889 co-relation queries the response was YES. [2024-10-11 23:56:40,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18381 conditions, 3123 events. 1401/3123 cut-off events. For 55754/55889 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 20236 event pairs, 369 based on Foata normal form. 155/3236 useless extension candidates. Maximal degree in co-relation 18187. Up to 1666 conditions per place. [2024-10-11 23:56:40,651 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 280 selfloop transitions, 172 changer transitions 0/460 dead transitions. [2024-10-11 23:56:40,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 460 transitions, 8183 flow [2024-10-11 23:56:40,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 23:56:40,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-11 23:56:40,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 456 transitions. [2024-10-11 23:56:40,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4676923076923077 [2024-10-11 23:56:40,652 INFO L175 Difference]: Start difference. First operand has 207 places, 237 transitions, 4558 flow. Second operand 25 states and 456 transitions. [2024-10-11 23:56:40,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 460 transitions, 8183 flow [2024-10-11 23:56:40,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 460 transitions, 7874 flow, removed 28 selfloop flow, removed 15 redundant places. [2024-10-11 23:56:40,777 INFO L231 Difference]: Finished difference. Result has 223 places, 315 transitions, 6413 flow [2024-10-11 23:56:40,777 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4276, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6413, PETRI_PLACES=223, PETRI_TRANSITIONS=315} [2024-10-11 23:56:40,778 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 184 predicate places. [2024-10-11 23:56:40,778 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 315 transitions, 6413 flow [2024-10-11 23:56:40,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 12.5) internal successors, (300), 24 states have internal predecessors, (300), 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) [2024-10-11 23:56:40,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:40,778 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:40,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 23:56:40,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:40,979 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:56:40,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:40,979 INFO L85 PathProgramCache]: Analyzing trace with hash -417960963, now seen corresponding path program 1 times [2024-10-11 23:56:40,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:40,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678180042] [2024-10-11 23:56:40,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:40,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:41,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:41,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678180042] [2024-10-11 23:56:41,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678180042] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:41,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48551289] [2024-10-11 23:56:41,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:41,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:41,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:41,170 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:41,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 23:56:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:41,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-11 23:56:41,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:41,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-11 23:56:41,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-10-11 23:56:43,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2024-10-11 23:56:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:43,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:47,219 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:56:47,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48551289] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:47,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:47,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 22 [2024-10-11 23:56:47,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177838840] [2024-10-11 23:56:47,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:47,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 23:56:47,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:47,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 23:56:47,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=416, Unknown=6, NotChecked=0, Total=552 [2024-10-11 23:56:48,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 23:56:50,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 23:56:51,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 23:56:51,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-10-11 23:56:51,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 315 transitions, 6413 flow. Second operand has 24 states, 24 states have (on average 12.5) internal successors, (300), 24 states have internal predecessors, (300), 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) [2024-10-11 23:56:51,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:51,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-10-11 23:56:51,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:59,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-11 23:57:04,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 23:57:07,452 INFO L124 PetriNetUnfolderBase]: 1576/3489 cut-off events. [2024-10-11 23:57:07,452 INFO L125 PetriNetUnfolderBase]: For 69205/69543 co-relation queries the response was YES. [2024-10-11 23:57:07,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21627 conditions, 3489 events. 1576/3489 cut-off events. For 69205/69543 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 22834 event pairs, 379 based on Foata normal form. 202/3645 useless extension candidates. Maximal degree in co-relation 21430. Up to 1896 conditions per place. [2024-10-11 23:57:07,477 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 360 selfloop transitions, 208 changer transitions 0/578 dead transitions. [2024-10-11 23:57:07,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 578 transitions, 11378 flow [2024-10-11 23:57:07,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-11 23:57:07,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-11 23:57:07,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 472 transitions. [2024-10-11 23:57:07,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46548323471400394 [2024-10-11 23:57:07,478 INFO L175 Difference]: Start difference. First operand has 223 places, 315 transitions, 6413 flow. Second operand 26 states and 472 transitions. [2024-10-11 23:57:07,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 578 transitions, 11378 flow [2024-10-11 23:57:07,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 578 transitions, 10053 flow, removed 444 selfloop flow, removed 13 redundant places. [2024-10-11 23:57:07,613 INFO L231 Difference]: Finished difference. Result has 245 places, 410 transitions, 8225 flow [2024-10-11 23:57:07,614 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5036, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8225, PETRI_PLACES=245, PETRI_TRANSITIONS=410} [2024-10-11 23:57:07,614 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 206 predicate places. [2024-10-11 23:57:07,614 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 410 transitions, 8225 flow [2024-10-11 23:57:07,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 12.5) internal successors, (300), 24 states have internal predecessors, (300), 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) [2024-10-11 23:57:07,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:07,614 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:07,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 23:57:07,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-11 23:57:07,815 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:57:07,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:07,816 INFO L85 PathProgramCache]: Analyzing trace with hash -587414104, now seen corresponding path program 1 times [2024-10-11 23:57:07,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:07,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766464113] [2024-10-11 23:57:07,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:07,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:57:07,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:07,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766464113] [2024-10-11 23:57:07,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766464113] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:57:07,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157438146] [2024-10-11 23:57:07,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:07,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:57:07,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:57:07,892 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:57:07,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 23:57:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:07,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:57:07,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:57:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:57:08,020 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:57:08,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157438146] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:08,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:57:08,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-11 23:57:08,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077678456] [2024-10-11 23:57:08,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:08,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:57:08,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:08,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:57:08,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:57:08,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-11 23:57:08,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 410 transitions, 8225 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:08,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:08,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-11 23:57:08,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:08,662 INFO L124 PetriNetUnfolderBase]: 1113/2666 cut-off events. [2024-10-11 23:57:08,662 INFO L125 PetriNetUnfolderBase]: For 47436/47673 co-relation queries the response was YES. [2024-10-11 23:57:08,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16813 conditions, 2666 events. 1113/2666 cut-off events. For 47436/47673 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 17575 event pairs, 218 based on Foata normal form. 146/2810 useless extension candidates. Maximal degree in co-relation 16611. Up to 951 conditions per place. [2024-10-11 23:57:08,732 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 469 selfloop transitions, 17 changer transitions 0/503 dead transitions. [2024-10-11 23:57:08,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 503 transitions, 10309 flow [2024-10-11 23:57:08,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:57:08,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:57:08,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-10-11 23:57:08,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6495726495726496 [2024-10-11 23:57:08,733 INFO L175 Difference]: Start difference. First operand has 245 places, 410 transitions, 8225 flow. Second operand 6 states and 152 transitions. [2024-10-11 23:57:08,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 503 transitions, 10309 flow [2024-10-11 23:57:08,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 503 transitions, 9134 flow, removed 478 selfloop flow, removed 9 redundant places. [2024-10-11 23:57:08,862 INFO L231 Difference]: Finished difference. Result has 240 places, 409 transitions, 7245 flow [2024-10-11 23:57:08,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7211, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7245, PETRI_PLACES=240, PETRI_TRANSITIONS=409} [2024-10-11 23:57:08,863 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 201 predicate places. [2024-10-11 23:57:08,863 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 409 transitions, 7245 flow [2024-10-11 23:57:08,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:08,863 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:08,863 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:08,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 23:57:09,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-11 23:57:09,064 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:57:09,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:09,065 INFO L85 PathProgramCache]: Analyzing trace with hash -364615602, now seen corresponding path program 1 times [2024-10-11 23:57:09,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:09,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051256441] [2024-10-11 23:57:09,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:09,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:09,125 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:57:09,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:09,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051256441] [2024-10-11 23:57:09,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051256441] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:57:09,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447580180] [2024-10-11 23:57:09,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:09,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:57:09,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:57:09,128 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:57:09,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 23:57:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:09,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:57:09,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:57:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:57:09,258 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:57:09,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447580180] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:09,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:57:09,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-11 23:57:09,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343809969] [2024-10-11 23:57:09,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:09,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:57:09,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:09,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:57:09,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:57:09,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-11 23:57:09,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 409 transitions, 7245 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:09,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:09,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-11 23:57:09,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:09,861 INFO L124 PetriNetUnfolderBase]: 1116/2645 cut-off events. [2024-10-11 23:57:09,862 INFO L125 PetriNetUnfolderBase]: For 38203/38506 co-relation queries the response was YES. [2024-10-11 23:57:09,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15460 conditions, 2645 events. 1116/2645 cut-off events. For 38203/38506 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 17204 event pairs, 203 based on Foata normal form. 173/2806 useless extension candidates. Maximal degree in co-relation 15261. Up to 854 conditions per place. [2024-10-11 23:57:09,884 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 496 selfloop transitions, 19 changer transitions 0/531 dead transitions. [2024-10-11 23:57:09,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 531 transitions, 9817 flow [2024-10-11 23:57:09,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:57:09,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:57:09,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-10-11 23:57:09,885 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6495726495726496 [2024-10-11 23:57:09,885 INFO L175 Difference]: Start difference. First operand has 240 places, 409 transitions, 7245 flow. Second operand 6 states and 152 transitions. [2024-10-11 23:57:09,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 531 transitions, 9817 flow [2024-10-11 23:57:09,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 531 transitions, 9730 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-11 23:57:10,006 INFO L231 Difference]: Finished difference. Result has 241 places, 408 transitions, 7257 flow [2024-10-11 23:57:10,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7219, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7257, PETRI_PLACES=241, PETRI_TRANSITIONS=408} [2024-10-11 23:57:10,007 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 202 predicate places. [2024-10-11 23:57:10,007 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 408 transitions, 7257 flow [2024-10-11 23:57:10,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:10,007 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:10,007 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:10,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 23:57:10,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:57:10,209 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:57:10,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:10,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1029967761, now seen corresponding path program 1 times [2024-10-11 23:57:10,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:10,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090314679] [2024-10-11 23:57:10,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:10,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-10-11 23:57:10,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:10,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090314679] [2024-10-11 23:57:10,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090314679] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:10,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:57:10,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:57:10,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589166703] [2024-10-11 23:57:10,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:10,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:57:10,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:10,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:57:10,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:57:10,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-11 23:57:10,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 408 transitions, 7257 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:10,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:10,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-11 23:57:10,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:10,738 INFO L124 PetriNetUnfolderBase]: 1071/2591 cut-off events. [2024-10-11 23:57:10,738 INFO L125 PetriNetUnfolderBase]: For 36861/37059 co-relation queries the response was YES. [2024-10-11 23:57:10,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15315 conditions, 2591 events. 1071/2591 cut-off events. For 36861/37059 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 17050 event pairs, 262 based on Foata normal form. 128/2717 useless extension candidates. Maximal degree in co-relation 15116. Up to 1580 conditions per place. [2024-10-11 23:57:10,759 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 439 selfloop transitions, 21 changer transitions 0/476 dead transitions. [2024-10-11 23:57:10,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 476 transitions, 8957 flow [2024-10-11 23:57:10,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:57:10,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:57:10,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-10-11 23:57:10,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-10-11 23:57:10,760 INFO L175 Difference]: Start difference. First operand has 241 places, 408 transitions, 7257 flow. Second operand 4 states and 99 transitions. [2024-10-11 23:57:10,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 476 transitions, 8957 flow [2024-10-11 23:57:10,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 476 transitions, 8848 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-10-11 23:57:10,890 INFO L231 Difference]: Finished difference. Result has 239 places, 408 transitions, 7265 flow [2024-10-11 23:57:10,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7205, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=7265, PETRI_PLACES=239, PETRI_TRANSITIONS=408} [2024-10-11 23:57:10,891 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 200 predicate places. [2024-10-11 23:57:10,891 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 408 transitions, 7265 flow [2024-10-11 23:57:10,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:10,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:10,892 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:10,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-11 23:57:10,892 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:57:10,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:10,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1581818489, now seen corresponding path program 1 times [2024-10-11 23:57:10,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:10,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034215681] [2024-10-11 23:57:10,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:10,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-10-11 23:57:10,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:10,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034215681] [2024-10-11 23:57:10,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034215681] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:10,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:57:10,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:57:10,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655509418] [2024-10-11 23:57:10,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:10,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:57:10,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:10,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:57:10,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:57:10,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-11 23:57:10,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 408 transitions, 7265 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:10,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:10,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-11 23:57:10,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:11,423 INFO L124 PetriNetUnfolderBase]: 1071/2565 cut-off events. [2024-10-11 23:57:11,423 INFO L125 PetriNetUnfolderBase]: For 36681/36870 co-relation queries the response was YES. [2024-10-11 23:57:11,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15248 conditions, 2565 events. 1071/2565 cut-off events. For 36681/36870 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 16703 event pairs, 240 based on Foata normal form. 132/2695 useless extension candidates. Maximal degree in co-relation 15051. Up to 1539 conditions per place. [2024-10-11 23:57:11,442 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 446 selfloop transitions, 20 changer transitions 0/481 dead transitions. [2024-10-11 23:57:11,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 481 transitions, 9122 flow [2024-10-11 23:57:11,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:57:11,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:57:11,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-10-11 23:57:11,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-10-11 23:57:11,443 INFO L175 Difference]: Start difference. First operand has 239 places, 408 transitions, 7265 flow. Second operand 4 states and 99 transitions. [2024-10-11 23:57:11,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 481 transitions, 9122 flow [2024-10-11 23:57:11,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 481 transitions, 9026 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-11 23:57:11,561 INFO L231 Difference]: Finished difference. Result has 239 places, 408 transitions, 7275 flow [2024-10-11 23:57:11,561 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7217, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=7275, PETRI_PLACES=239, PETRI_TRANSITIONS=408} [2024-10-11 23:57:11,561 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 200 predicate places. [2024-10-11 23:57:11,562 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 408 transitions, 7275 flow [2024-10-11 23:57:11,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:11,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:11,562 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:11,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-10-11 23:57:11,562 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:57:11,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:11,562 INFO L85 PathProgramCache]: Analyzing trace with hash 364639461, now seen corresponding path program 1 times [2024-10-11 23:57:11,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:11,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285365943] [2024-10-11 23:57:11,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:11,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:12,048 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:57:12,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:12,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285365943] [2024-10-11 23:57:12,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285365943] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:57:12,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280893874] [2024-10-11 23:57:12,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:12,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:57:12,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:57:12,051 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:57:12,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 23:57:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:12,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-11 23:57:12,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:57:12,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-11 23:57:12,325 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-10-11 23:57:12,325 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:57:12,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280893874] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:12,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:57:12,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 19 [2024-10-11 23:57:12,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25701745] [2024-10-11 23:57:12,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:12,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:57:12,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:12,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:57:12,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-10-11 23:57:12,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-10-11 23:57:12,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 408 transitions, 7275 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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) [2024-10-11 23:57:12,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:12,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-10-11 23:57:12,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:13,057 INFO L124 PetriNetUnfolderBase]: 1218/2892 cut-off events. [2024-10-11 23:57:13,057 INFO L125 PetriNetUnfolderBase]: For 41804/42082 co-relation queries the response was YES. [2024-10-11 23:57:13,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17518 conditions, 2892 events. 1218/2892 cut-off events. For 41804/42082 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 19701 event pairs, 172 based on Foata normal form. 130/3015 useless extension candidates. Maximal degree in co-relation 17321. Up to 1016 conditions per place. [2024-10-11 23:57:13,083 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 568 selfloop transitions, 27 changer transitions 0/610 dead transitions. [2024-10-11 23:57:13,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 610 transitions, 11279 flow [2024-10-11 23:57:13,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 23:57:13,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 23:57:13,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-10-11 23:57:13,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2024-10-11 23:57:13,084 INFO L175 Difference]: Start difference. First operand has 239 places, 408 transitions, 7275 flow. Second operand 8 states and 196 transitions. [2024-10-11 23:57:13,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 610 transitions, 11279 flow [2024-10-11 23:57:13,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 610 transitions, 11169 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:57:13,244 INFO L231 Difference]: Finished difference. Result has 248 places, 419 transitions, 7395 flow [2024-10-11 23:57:13,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7245, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7395, PETRI_PLACES=248, PETRI_TRANSITIONS=419} [2024-10-11 23:57:13,245 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 209 predicate places. [2024-10-11 23:57:13,245 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 419 transitions, 7395 flow [2024-10-11 23:57:13,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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) [2024-10-11 23:57:13,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:13,246 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:13,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-11 23:57:13,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-10-11 23:57:13,446 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:57:13,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:13,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1391404538, now seen corresponding path program 1 times [2024-10-11 23:57:13,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:13,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212599556] [2024-10-11 23:57:13,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:13,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:57:13,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:13,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212599556] [2024-10-11 23:57:13,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212599556] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:57:13,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629216955] [2024-10-11 23:57:13,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:13,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:57:13,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:57:13,894 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:57:13,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 23:57:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:13,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-11 23:57:13,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:57:13,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-11 23:57:14,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2024-10-11 23:57:14,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 32 [2024-10-11 23:57:14,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2024-10-11 23:57:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-11 23:57:14,639 INFO L311 TraceCheckSpWp]: Computing backward predicates...