./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_23-idxsense_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:53:08,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:53:08,474 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:53:08,492 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:53:08,493 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:53:08,526 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:53:08,527 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:53:08,528 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:53:08,528 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:53:08,529 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:53:08,530 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:53:08,531 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:53:08,531 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:53:08,532 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:53:08,533 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:53:08,533 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:53:08,533 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:53:08,534 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:53:08,534 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:53:08,534 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:53:08,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:53:08,538 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:53:08,538 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:53:08,538 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:53:08,538 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:53:08,538 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:53:08,539 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:53:08,539 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:53:08,539 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:53:08,540 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:53:08,540 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:53:08,540 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:53:08,540 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:53:08,540 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:53:08,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:53:08,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:53:08,541 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:53:08,541 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:53:08,542 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:53:08,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:53:08,542 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:53:08,543 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:53:08,543 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:53:08,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:53:08,543 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 [2024-10-14 23:53:08,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:53:08,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:53:08,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:53:08,874 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:53:08,874 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:53:08,875 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i [2024-10-14 23:53:10,291 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:53:10,570 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:53:10,571 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i [2024-10-14 23:53:10,591 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa40ac582/57cbac4d7d78459c85c8f703906ca3e6/FLAGed19df6b8 [2024-10-14 23:53:10,609 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa40ac582/57cbac4d7d78459c85c8f703906ca3e6 [2024-10-14 23:53:10,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:53:10,614 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:53:10,615 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:53:10,615 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:53:10,620 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:53:10,621 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:53:10" (1/1) ... [2024-10-14 23:53:10,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d5add71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:10, skipping insertion in model container [2024-10-14 23:53:10,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:53:10" (1/1) ... [2024-10-14 23:53:10,669 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:53:10,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:53:10,972 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:53:11,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:53:11,136 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:53:11,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:11 WrapperNode [2024-10-14 23:53:11,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:53:11,138 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:53:11,139 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:53:11,139 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:53:11,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:11" (1/1) ... [2024-10-14 23:53:11,160 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:11" (1/1) ... [2024-10-14 23:53:11,177 INFO L138 Inliner]: procedures = 161, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2024-10-14 23:53:11,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:53:11,179 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:53:11,179 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:53:11,179 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:53:11,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:11" (1/1) ... [2024-10-14 23:53:11,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:11" (1/1) ... [2024-10-14 23:53:11,196 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:11" (1/1) ... [2024-10-14 23:53:11,221 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [7, 1]. 88 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 5 writes are split as follows [4, 1]. [2024-10-14 23:53:11,221 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:11" (1/1) ... [2024-10-14 23:53:11,221 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:11" (1/1) ... [2024-10-14 23:53:11,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:11" (1/1) ... [2024-10-14 23:53:11,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:11" (1/1) ... [2024-10-14 23:53:11,231 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:11" (1/1) ... [2024-10-14 23:53:11,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:11" (1/1) ... [2024-10-14 23:53:11,234 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:53:11,239 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:53:11,239 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:53:11,240 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:53:11,241 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:11" (1/1) ... [2024-10-14 23:53:11,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:53:11,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:11,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 23:53:11,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 23:53:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 23:53:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 23:53:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 23:53:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 23:53:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 23:53:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:53:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-14 23:53:11,316 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-14 23:53:11,316 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 23:53:11,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:53:11,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:53:11,318 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 23:53:11,440 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:53:11,442 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:53:11,579 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:53:11,579 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:53:11,678 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:53:11,678 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 23:53:11,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:53:11 BoogieIcfgContainer [2024-10-14 23:53:11,679 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:53:11,681 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:53:11,681 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:53:11,684 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:53:11,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:53:10" (1/3) ... [2024-10-14 23:53:11,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b492ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:53:11, skipping insertion in model container [2024-10-14 23:53:11,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:11" (2/3) ... [2024-10-14 23:53:11,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b492ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:53:11, skipping insertion in model container [2024-10-14 23:53:11,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:53:11" (3/3) ... [2024-10-14 23:53:11,687 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_23-idxsense_nr.i [2024-10-14 23:53:11,704 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:53:11,705 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-14 23:53:11,705 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:53:11,750 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:53:11,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 35 transitions, 74 flow [2024-10-14 23:53:11,812 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-10-14 23:53:11,813 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:53:11,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2024-10-14 23:53:11,816 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 35 transitions, 74 flow [2024-10-14 23:53:11,819 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 34 transitions, 71 flow [2024-10-14 23:53:11,828 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:53:11,834 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;@9cc99b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:53:11,834 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-10-14 23:53:11,837 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:53:11,837 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-14 23:53:11,837 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:53:11,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:11,838 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 23:53:11,839 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:53:11,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:11,843 INFO L85 PathProgramCache]: Analyzing trace with hash 207574, now seen corresponding path program 1 times [2024-10-14 23:53:11,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:11,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543991297] [2024-10-14 23:53:11,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:11,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:12,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:12,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543991297] [2024-10-14 23:53:12,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543991297] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:12,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:12,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:53:12,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053372457] [2024-10-14 23:53:12,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:12,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:53:12,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:12,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:53:12,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:53:12,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-14 23:53:12,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:12,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:12,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-14 23:53:12,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:12,320 INFO L124 PetriNetUnfolderBase]: 51/167 cut-off events. [2024-10-14 23:53:12,320 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:53:12,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 167 events. 51/167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 620 event pairs, 50 based on Foata normal form. 1/151 useless extension candidates. Maximal degree in co-relation 275. Up to 118 conditions per place. [2024-10-14 23:53:12,324 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 17 selfloop transitions, 4 changer transitions 0/33 dead transitions. [2024-10-14 23:53:12,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 111 flow [2024-10-14 23:53:12,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:53:12,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:53:12,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-10-14 23:53:12,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-10-14 23:53:12,337 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 71 flow. Second operand 4 states and 74 transitions. [2024-10-14 23:53:12,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 111 flow [2024-10-14 23:53:12,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:53:12,355 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 76 flow [2024-10-14 23:53:12,357 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2024-10-14 23:53:12,361 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2024-10-14 23:53:12,362 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 76 flow [2024-10-14 23:53:12,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:12,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:12,362 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-14 23:53:12,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 23:53:12,363 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:53:12,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:12,364 INFO L85 PathProgramCache]: Analyzing trace with hash 6434990, now seen corresponding path program 1 times [2024-10-14 23:53:12,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:12,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542731204] [2024-10-14 23:53:12,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:12,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:12,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:12,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:12,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542731204] [2024-10-14 23:53:12,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542731204] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:12,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:12,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:53:12,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155292646] [2024-10-14 23:53:12,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:12,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:53:12,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:12,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:53:12,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:53:12,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-14 23:53:12,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:12,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:12,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-14 23:53:12,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:12,587 INFO L124 PetriNetUnfolderBase]: 51/170 cut-off events. [2024-10-14 23:53:12,587 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 23:53:12,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 170 events. 51/170 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 622 event pairs, 50 based on Foata normal form. 1/155 useless extension candidates. Maximal degree in co-relation 279. Up to 122 conditions per place. [2024-10-14 23:53:12,590 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 20 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2024-10-14 23:53:12,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 130 flow [2024-10-14 23:53:12,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:53:12,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:53:12,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-10-14 23:53:12,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-10-14 23:53:12,595 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 76 flow. Second operand 4 states and 77 transitions. [2024-10-14 23:53:12,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 130 flow [2024-10-14 23:53:12,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 118 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:53:12,600 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 90 flow [2024-10-14 23:53:12,600 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2024-10-14 23:53:12,601 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2024-10-14 23:53:12,603 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 90 flow [2024-10-14 23:53:12,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:12,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:12,604 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-14 23:53:12,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 23:53:12,604 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:53:12,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:12,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1568532559, now seen corresponding path program 1 times [2024-10-14 23:53:12,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:12,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211503591] [2024-10-14 23:53:12,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:12,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:12,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:53:12,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:12,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211503591] [2024-10-14 23:53:12,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211503591] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:12,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:12,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:53:12,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374803893] [2024-10-14 23:53:12,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:12,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:53:12,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:12,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:53:12,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:53:12,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-14 23:53:12,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:12,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:12,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-14 23:53:12,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:12,771 INFO L124 PetriNetUnfolderBase]: 51/169 cut-off events. [2024-10-14 23:53:12,771 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 23:53:12,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 169 events. 51/169 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 617 event pairs, 50 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 289. Up to 121 conditions per place. [2024-10-14 23:53:12,774 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 18 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2024-10-14 23:53:12,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 130 flow [2024-10-14 23:53:12,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:53:12,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:53:12,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-10-14 23:53:12,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-10-14 23:53:12,777 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 90 flow. Second operand 3 states and 60 transitions. [2024-10-14 23:53:12,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 130 flow [2024-10-14 23:53:12,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:53:12,779 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 92 flow [2024-10-14 23:53:12,779 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-10-14 23:53:12,781 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2024-10-14 23:53:12,781 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 92 flow [2024-10-14 23:53:12,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:12,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:12,782 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:12,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 23:53:12,782 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:53:12,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:12,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1131268833, now seen corresponding path program 1 times [2024-10-14 23:53:12,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:12,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520000033] [2024-10-14 23:53:12,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:12,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:12,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:12,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520000033] [2024-10-14 23:53:12,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520000033] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:53:12,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706823631] [2024-10-14 23:53:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:12,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:12,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:12,900 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:53:12,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 23:53:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:12,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:53:12,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:53:13,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:13,010 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:53:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:13,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706823631] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:53:13,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:53:13,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-14 23:53:13,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103959579] [2024-10-14 23:53:13,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:53:13,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:53:13,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:13,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:53:13,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:53:13,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-14 23:53:13,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 92 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:13,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:13,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-14 23:53:13,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:13,185 INFO L124 PetriNetUnfolderBase]: 51/173 cut-off events. [2024-10-14 23:53:13,185 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-14 23:53:13,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 173 events. 51/173 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 614 event pairs, 50 based on Foata normal form. 2/160 useless extension candidates. Maximal degree in co-relation 286. Up to 119 conditions per place. [2024-10-14 23:53:13,187 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 18 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2024-10-14 23:53:13,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 37 transitions, 160 flow [2024-10-14 23:53:13,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:53:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:53:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-10-14 23:53:13,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4816326530612245 [2024-10-14 23:53:13,189 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 92 flow. Second operand 7 states and 118 transitions. [2024-10-14 23:53:13,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 37 transitions, 160 flow [2024-10-14 23:53:13,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 37 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:53:13,191 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 121 flow [2024-10-14 23:53:13,191 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=121, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-10-14 23:53:13,192 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2024-10-14 23:53:13,192 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 121 flow [2024-10-14 23:53:13,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:13,193 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:13,193 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:13,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 23:53:13,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:13,398 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:53:13,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:13,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1663528961, now seen corresponding path program 2 times [2024-10-14 23:53:13,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:13,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604414018] [2024-10-14 23:53:13,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:13,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:13,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:13,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604414018] [2024-10-14 23:53:13,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604414018] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:53:13,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966639286] [2024-10-14 23:53:13,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 23:53:13,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:13,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:13,567 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:53:13,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 23:53:13,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 23:53:13,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:53:13,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:53:13,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:53:13,672 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 [2024-10-14 23:53:13,722 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 16 treesize of output 12 [2024-10-14 23:53:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 23:53:13,742 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:53:13,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966639286] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:13,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:53:13,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 10 [2024-10-14 23:53:13,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480370018] [2024-10-14 23:53:13,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:13,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:53:13,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:13,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:53:13,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-14 23:53:13,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-14 23:53:13,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:13,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:13,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-14 23:53:13,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:13,890 INFO L124 PetriNetUnfolderBase]: 80/230 cut-off events. [2024-10-14 23:53:13,891 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 23:53:13,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 230 events. 80/230 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 896 event pairs, 29 based on Foata normal form. 11/212 useless extension candidates. Maximal degree in co-relation 399. Up to 118 conditions per place. [2024-10-14 23:53:13,894 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 40 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-10-14 23:53:13,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 255 flow [2024-10-14 23:53:13,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:53:13,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:53:13,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-10-14 23:53:13,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6228571428571429 [2024-10-14 23:53:13,896 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 121 flow. Second operand 5 states and 109 transitions. [2024-10-14 23:53:13,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 255 flow [2024-10-14 23:53:13,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 241 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-14 23:53:13,899 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 159 flow [2024-10-14 23:53:13,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2024-10-14 23:53:13,904 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2024-10-14 23:53:13,904 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 159 flow [2024-10-14 23:53:13,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:13,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:13,904 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:13,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 23:53:14,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:14,106 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:53:14,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:14,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1663138778, now seen corresponding path program 1 times [2024-10-14 23:53:14,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:14,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954785307] [2024-10-14 23:53:14,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:14,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:14,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:14,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954785307] [2024-10-14 23:53:14,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954785307] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:53:14,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155397601] [2024-10-14 23:53:14,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:14,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:14,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:14,259 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:53:14,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 23:53:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:14,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 23:53:14,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:53:14,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:14,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:53:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:14,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155397601] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:53:14,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:53:14,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-14 23:53:14,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7854416] [2024-10-14 23:53:14,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:53:14,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 23:53:14,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:14,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 23:53:14,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-14 23:53:14,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-14 23:53:14,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 159 flow. Second operand has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:14,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:14,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-14 23:53:14,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:14,684 INFO L124 PetriNetUnfolderBase]: 57/207 cut-off events. [2024-10-14 23:53:14,685 INFO L125 PetriNetUnfolderBase]: For 88/98 co-relation queries the response was YES. [2024-10-14 23:53:14,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 207 events. 57/207 cut-off events. For 88/98 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 768 event pairs, 42 based on Foata normal form. 7/201 useless extension candidates. Maximal degree in co-relation 390. Up to 132 conditions per place. [2024-10-14 23:53:14,687 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 23 selfloop transitions, 15 changer transitions 0/51 dead transitions. [2024-10-14 23:53:14,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 51 transitions, 283 flow [2024-10-14 23:53:14,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 23:53:14,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-14 23:53:14,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 232 transitions. [2024-10-14 23:53:14,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4419047619047619 [2024-10-14 23:53:14,689 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 159 flow. Second operand 15 states and 232 transitions. [2024-10-14 23:53:14,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 51 transitions, 283 flow [2024-10-14 23:53:14,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 51 transitions, 283 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:53:14,693 INFO L231 Difference]: Finished difference. Result has 69 places, 51 transitions, 256 flow [2024-10-14 23:53:14,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=256, PETRI_PLACES=69, PETRI_TRANSITIONS=51} [2024-10-14 23:53:14,694 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2024-10-14 23:53:14,694 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 51 transitions, 256 flow [2024-10-14 23:53:14,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:14,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:14,695 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:14,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 23:53:14,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:14,899 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:53:14,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:14,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1428308454, now seen corresponding path program 2 times [2024-10-14 23:53:14,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:14,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518426969] [2024-10-14 23:53:14,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:14,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:15,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:15,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518426969] [2024-10-14 23:53:15,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518426969] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:53:15,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151869369] [2024-10-14 23:53:15,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 23:53:15,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:15,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:15,165 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:53:15,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 23:53:15,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 23:53:15,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:53:15,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:53:15,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:53:15,233 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 [2024-10-14 23:53:15,304 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 16 treesize of output 12 [2024-10-14 23:53:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-14 23:53:15,328 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:53:15,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151869369] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:15,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:53:15,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [16] total 18 [2024-10-14 23:53:15,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706757441] [2024-10-14 23:53:15,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:15,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:53:15,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:15,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:53:15,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2024-10-14 23:53:15,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-14 23:53:15,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 51 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:15,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:15,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-14 23:53:15,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:15,452 INFO L124 PetriNetUnfolderBase]: 69/225 cut-off events. [2024-10-14 23:53:15,453 INFO L125 PetriNetUnfolderBase]: For 129/140 co-relation queries the response was YES. [2024-10-14 23:53:15,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 225 events. 69/225 cut-off events. For 129/140 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 839 event pairs, 26 based on Foata normal form. 9/226 useless extension candidates. Maximal degree in co-relation 463. Up to 119 conditions per place. [2024-10-14 23:53:15,459 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 44 selfloop transitions, 8 changer transitions 0/63 dead transitions. [2024-10-14 23:53:15,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 63 transitions, 394 flow [2024-10-14 23:53:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:53:15,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:53:15,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-10-14 23:53:15,460 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5942857142857143 [2024-10-14 23:53:15,461 INFO L175 Difference]: Start difference. First operand has 69 places, 51 transitions, 256 flow. Second operand 5 states and 104 transitions. [2024-10-14 23:53:15,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 63 transitions, 394 flow [2024-10-14 23:53:15,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 376 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-14 23:53:15,467 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 294 flow [2024-10-14 23:53:15,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2024-10-14 23:53:15,468 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 36 predicate places. [2024-10-14 23:53:15,468 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 294 flow [2024-10-14 23:53:15,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:15,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:15,469 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:15,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 23:53:15,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:15,673 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:53:15,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:15,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1315793218, now seen corresponding path program 1 times [2024-10-14 23:53:15,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:15,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401436926] [2024-10-14 23:53:15,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:15,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:15,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:15,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401436926] [2024-10-14 23:53:15,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401436926] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:53:15,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473467597] [2024-10-14 23:53:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:15,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:15,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:15,915 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:53:15,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 23:53:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:15,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 23:53:15,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:53:16,047 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:16,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:53:16,262 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:16,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473467597] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:53:16,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:53:16,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 20 [2024-10-14 23:53:16,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810006906] [2024-10-14 23:53:16,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:53:16,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-14 23:53:16,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:16,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-14 23:53:16,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-10-14 23:53:16,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-14 23:53:16,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 294 flow. Second operand has 21 states, 21 states have (on average 14.19047619047619) internal successors, (298), 21 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:16,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:16,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-14 23:53:16,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:16,534 INFO L124 PetriNetUnfolderBase]: 59/225 cut-off events. [2024-10-14 23:53:16,536 INFO L125 PetriNetUnfolderBase]: For 246/260 co-relation queries the response was YES. [2024-10-14 23:53:16,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 225 events. 59/225 cut-off events. For 246/260 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 817 event pairs, 41 based on Foata normal form. 6/224 useless extension candidates. Maximal degree in co-relation 505. Up to 137 conditions per place. [2024-10-14 23:53:16,538 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 26 selfloop transitions, 21 changer transitions 0/61 dead transitions. [2024-10-14 23:53:16,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 61 transitions, 442 flow [2024-10-14 23:53:16,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-14 23:53:16,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-14 23:53:16,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 315 transitions. [2024-10-14 23:53:16,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-10-14 23:53:16,542 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 294 flow. Second operand 21 states and 315 transitions. [2024-10-14 23:53:16,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 61 transitions, 442 flow [2024-10-14 23:53:16,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 61 transitions, 440 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-14 23:53:16,549 INFO L231 Difference]: Finished difference. Result has 96 places, 61 transitions, 403 flow [2024-10-14 23:53:16,550 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=403, PETRI_PLACES=96, PETRI_TRANSITIONS=61} [2024-10-14 23:53:16,552 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 59 predicate places. [2024-10-14 23:53:16,552 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 61 transitions, 403 flow [2024-10-14 23:53:16,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 14.19047619047619) internal successors, (298), 21 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:16,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:16,553 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:16,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-14 23:53:16,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:16,754 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:53:16,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:16,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1557370427, now seen corresponding path program 2 times [2024-10-14 23:53:16,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:16,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644020208] [2024-10-14 23:53:16,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:16,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:16,897 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:16,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:16,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644020208] [2024-10-14 23:53:16,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644020208] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:16,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:16,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:53:16,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715101989] [2024-10-14 23:53:16,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:16,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:53:16,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:16,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:53:16,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:53:16,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-14 23:53:16,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 61 transitions, 403 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:16,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:16,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-14 23:53:16,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:17,019 INFO L124 PetriNetUnfolderBase]: 65/219 cut-off events. [2024-10-14 23:53:17,020 INFO L125 PetriNetUnfolderBase]: For 323/328 co-relation queries the response was YES. [2024-10-14 23:53:17,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 219 events. 65/219 cut-off events. For 323/328 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 740 event pairs, 21 based on Foata normal form. 27/243 useless extension candidates. Maximal degree in co-relation 554. Up to 103 conditions per place. [2024-10-14 23:53:17,022 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 54 selfloop transitions, 8 changer transitions 7/80 dead transitions. [2024-10-14 23:53:17,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 80 transitions, 591 flow [2024-10-14 23:53:17,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:53:17,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:53:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-10-14 23:53:17,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6457142857142857 [2024-10-14 23:53:17,023 INFO L175 Difference]: Start difference. First operand has 96 places, 61 transitions, 403 flow. Second operand 5 states and 113 transitions. [2024-10-14 23:53:17,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 80 transitions, 591 flow [2024-10-14 23:53:17,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 80 transitions, 535 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-10-14 23:53:17,027 INFO L231 Difference]: Finished difference. Result has 89 places, 61 transitions, 384 flow [2024-10-14 23:53:17,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=89, PETRI_TRANSITIONS=61} [2024-10-14 23:53:17,028 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 52 predicate places. [2024-10-14 23:53:17,028 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 61 transitions, 384 flow [2024-10-14 23:53:17,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:17,029 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:17,029 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:17,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 23:53:17,029 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:53:17,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:17,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1545274724, now seen corresponding path program 1 times [2024-10-14 23:53:17,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:17,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090032240] [2024-10-14 23:53:17,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:17,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:17,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:17,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090032240] [2024-10-14 23:53:17,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090032240] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:17,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:17,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:53:17,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117162888] [2024-10-14 23:53:17,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:17,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:53:17,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:17,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:53:17,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:53:17,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-14 23:53:17,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 61 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:17,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:17,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-14 23:53:17,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:17,257 INFO L124 PetriNetUnfolderBase]: 46/191 cut-off events. [2024-10-14 23:53:17,257 INFO L125 PetriNetUnfolderBase]: For 317/319 co-relation queries the response was YES. [2024-10-14 23:53:17,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 191 events. 46/191 cut-off events. For 317/319 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 648 event pairs, 15 based on Foata normal form. 14/198 useless extension candidates. Maximal degree in co-relation 517. Up to 69 conditions per place. [2024-10-14 23:53:17,259 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 48 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2024-10-14 23:53:17,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 65 transitions, 500 flow [2024-10-14 23:53:17,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:53:17,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:53:17,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-10-14 23:53:17,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-14 23:53:17,260 INFO L175 Difference]: Start difference. First operand has 89 places, 61 transitions, 384 flow. Second operand 4 states and 84 transitions. [2024-10-14 23:53:17,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 65 transitions, 500 flow [2024-10-14 23:53:17,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 65 transitions, 467 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-10-14 23:53:17,264 INFO L231 Difference]: Finished difference. Result has 83 places, 58 transitions, 350 flow [2024-10-14 23:53:17,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=350, PETRI_PLACES=83, PETRI_TRANSITIONS=58} [2024-10-14 23:53:17,265 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 46 predicate places. [2024-10-14 23:53:17,265 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 58 transitions, 350 flow [2024-10-14 23:53:17,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:17,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:17,266 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:17,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 23:53:17,266 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:53:17,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:17,266 INFO L85 PathProgramCache]: Analyzing trace with hash 989088603, now seen corresponding path program 1 times [2024-10-14 23:53:17,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:17,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057619810] [2024-10-14 23:53:17,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:17,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:17,446 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:17,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:17,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057619810] [2024-10-14 23:53:17,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057619810] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:17,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:17,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:53:17,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031720293] [2024-10-14 23:53:17,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:17,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:53:17,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:17,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:53:17,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:53:17,454 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-14 23:53:17,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 58 transitions, 350 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:17,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:17,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-14 23:53:17,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:17,552 INFO L124 PetriNetUnfolderBase]: 49/186 cut-off events. [2024-10-14 23:53:17,552 INFO L125 PetriNetUnfolderBase]: For 257/259 co-relation queries the response was YES. [2024-10-14 23:53:17,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 186 events. 49/186 cut-off events. For 257/259 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 582 event pairs, 23 based on Foata normal form. 14/200 useless extension candidates. Maximal degree in co-relation 476. Up to 77 conditions per place. [2024-10-14 23:53:17,554 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 50 selfloop transitions, 7 changer transitions 5/70 dead transitions. [2024-10-14 23:53:17,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 70 transitions, 513 flow [2024-10-14 23:53:17,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:53:17,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:53:17,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-10-14 23:53:17,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-14 23:53:17,556 INFO L175 Difference]: Start difference. First operand has 83 places, 58 transitions, 350 flow. Second operand 5 states and 105 transitions. [2024-10-14 23:53:17,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 70 transitions, 513 flow [2024-10-14 23:53:17,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 70 transitions, 499 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:53:17,560 INFO L231 Difference]: Finished difference. Result has 87 places, 59 transitions, 370 flow [2024-10-14 23:53:17,560 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=370, PETRI_PLACES=87, PETRI_TRANSITIONS=59} [2024-10-14 23:53:17,561 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 50 predicate places. [2024-10-14 23:53:17,561 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 59 transitions, 370 flow [2024-10-14 23:53:17,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:17,561 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:17,561 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:17,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 23:53:17,562 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:53:17,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:17,562 INFO L85 PathProgramCache]: Analyzing trace with hash -506842787, now seen corresponding path program 1 times [2024-10-14 23:53:17,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:17,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54369925] [2024-10-14 23:53:17,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:17,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:17,740 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:17,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:17,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54369925] [2024-10-14 23:53:17,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54369925] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:17,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:17,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:53:17,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285728469] [2024-10-14 23:53:17,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:17,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:53:17,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:17,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:53:17,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:53:17,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-10-14 23:53:17,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 59 transitions, 370 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:17,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:17,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-10-14 23:53:17,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:17,890 INFO L124 PetriNetUnfolderBase]: 60/198 cut-off events. [2024-10-14 23:53:17,890 INFO L125 PetriNetUnfolderBase]: For 260/262 co-relation queries the response was YES. [2024-10-14 23:53:17,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 198 events. 60/198 cut-off events. For 260/262 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 629 event pairs, 24 based on Foata normal form. 8/205 useless extension candidates. Maximal degree in co-relation 563. Up to 99 conditions per place. [2024-10-14 23:53:17,892 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 51 selfloop transitions, 11 changer transitions 3/70 dead transitions. [2024-10-14 23:53:17,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 70 transitions, 527 flow [2024-10-14 23:53:17,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:53:17,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:53:17,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-10-14 23:53:17,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-10-14 23:53:17,894 INFO L175 Difference]: Start difference. First operand has 87 places, 59 transitions, 370 flow. Second operand 6 states and 99 transitions. [2024-10-14 23:53:17,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 70 transitions, 527 flow [2024-10-14 23:53:17,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 70 transitions, 516 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-14 23:53:17,898 INFO L231 Difference]: Finished difference. Result has 86 places, 57 transitions, 369 flow [2024-10-14 23:53:17,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=369, PETRI_PLACES=86, PETRI_TRANSITIONS=57} [2024-10-14 23:53:17,899 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 49 predicate places. [2024-10-14 23:53:17,899 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 57 transitions, 369 flow [2024-10-14 23:53:17,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:17,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:17,899 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:17,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 23:53:17,900 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:53:17,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:17,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1982633493, now seen corresponding path program 1 times [2024-10-14 23:53:17,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:17,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798658250] [2024-10-14 23:53:17,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:17,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:18,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:18,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798658250] [2024-10-14 23:53:18,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798658250] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:18,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:18,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:53:18,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481443547] [2024-10-14 23:53:18,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:18,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:53:18,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:18,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:53:18,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 23:53:18,150 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-10-14 23:53:18,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 57 transitions, 369 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:18,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:18,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-10-14 23:53:18,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:18,266 INFO L124 PetriNetUnfolderBase]: 45/166 cut-off events. [2024-10-14 23:53:18,267 INFO L125 PetriNetUnfolderBase]: For 337/339 co-relation queries the response was YES. [2024-10-14 23:53:18,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 166 events. 45/166 cut-off events. For 337/339 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 480 event pairs, 12 based on Foata normal form. 5/171 useless extension candidates. Maximal degree in co-relation 473. Up to 47 conditions per place. [2024-10-14 23:53:18,268 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 36 selfloop transitions, 3 changer transitions 24/69 dead transitions. [2024-10-14 23:53:18,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 69 transitions, 520 flow [2024-10-14 23:53:18,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:53:18,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:53:18,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-10-14 23:53:18,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4775510204081633 [2024-10-14 23:53:18,269 INFO L175 Difference]: Start difference. First operand has 86 places, 57 transitions, 369 flow. Second operand 7 states and 117 transitions. [2024-10-14 23:53:18,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 69 transitions, 520 flow [2024-10-14 23:53:18,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 69 transitions, 507 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 23:53:18,273 INFO L231 Difference]: Finished difference. Result has 86 places, 43 transitions, 270 flow [2024-10-14 23:53:18,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=270, PETRI_PLACES=86, PETRI_TRANSITIONS=43} [2024-10-14 23:53:18,274 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 49 predicate places. [2024-10-14 23:53:18,274 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 43 transitions, 270 flow [2024-10-14 23:53:18,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:18,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:18,274 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:18,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 23:53:18,275 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:53:18,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:18,275 INFO L85 PathProgramCache]: Analyzing trace with hash 116993513, now seen corresponding path program 1 times [2024-10-14 23:53:18,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:18,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825815949] [2024-10-14 23:53:18,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:18,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:18,539 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:18,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:18,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825815949] [2024-10-14 23:53:18,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825815949] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:18,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:18,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:53:18,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686608389] [2024-10-14 23:53:18,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:18,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:53:18,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:18,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:53:18,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 23:53:18,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-10-14 23:53:18,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 43 transitions, 270 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:18,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:18,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-10-14 23:53:18,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:18,613 INFO L124 PetriNetUnfolderBase]: 13/80 cut-off events. [2024-10-14 23:53:18,613 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-10-14 23:53:18,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 80 events. 13/80 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 6 based on Foata normal form. 3/83 useless extension candidates. Maximal degree in co-relation 242. Up to 43 conditions per place. [2024-10-14 23:53:18,614 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2024-10-14 23:53:18,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 46 transitions, 352 flow [2024-10-14 23:53:18,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:53:18,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:53:18,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-10-14 23:53:18,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-10-14 23:53:18,615 INFO L175 Difference]: Start difference. First operand has 86 places, 43 transitions, 270 flow. Second operand 6 states and 88 transitions. [2024-10-14 23:53:18,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 46 transitions, 352 flow [2024-10-14 23:53:18,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 46 transitions, 326 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-10-14 23:53:18,617 INFO L231 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2024-10-14 23:53:18,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2024-10-14 23:53:18,618 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 30 predicate places. [2024-10-14 23:53:18,618 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2024-10-14 23:53:18,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:18,621 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2024-10-14 23:53:18,622 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-10-14 23:53:18,622 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-10-14 23:53:18,622 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-10-14 23:53:18,622 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-10-14 23:53:18,622 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-10-14 23:53:18,622 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2024-10-14 23:53:18,623 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-10-14 23:53:18,623 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-10-14 23:53:18,623 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-10-14 23:53:18,623 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-10-14 23:53:18,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 23:53:18,623 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:18,628 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-14 23:53:18,628 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 23:53:18,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:53:18 BasicIcfg [2024-10-14 23:53:18,633 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 23:53:18,633 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 23:53:18,633 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 23:53:18,634 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 23:53:18,634 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:53:11" (3/4) ... [2024-10-14 23:53:18,635 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 23:53:18,638 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-14 23:53:18,641 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2024-10-14 23:53:18,641 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-10-14 23:53:18,641 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-14 23:53:18,717 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 23:53:18,717 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 23:53:18,717 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 23:53:18,718 INFO L158 Benchmark]: Toolchain (without parser) took 8104.23ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 104.9MB in the beginning and 142.1MB in the end (delta: -37.2MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. [2024-10-14 23:53:18,718 INFO L158 Benchmark]: CDTParser took 0.93ms. Allocated memory is still 96.5MB. Free memory is still 57.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 23:53:18,718 INFO L158 Benchmark]: CACSL2BoogieTranslator took 522.49ms. Allocated memory is still 161.5MB. Free memory was 104.4MB in the beginning and 125.8MB in the end (delta: -21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-14 23:53:18,719 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.88ms. Allocated memory is still 161.5MB. Free memory was 125.8MB in the beginning and 123.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 23:53:18,719 INFO L158 Benchmark]: Boogie Preprocessor took 55.21ms. Allocated memory is still 161.5MB. Free memory was 123.7MB in the beginning and 121.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 23:53:18,719 INFO L158 Benchmark]: RCFGBuilder took 439.79ms. Allocated memory is still 161.5MB. Free memory was 121.6MB in the beginning and 101.4MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-14 23:53:18,719 INFO L158 Benchmark]: TraceAbstraction took 6951.94ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 100.7MB in the beginning and 146.3MB in the end (delta: -45.6MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2024-10-14 23:53:18,720 INFO L158 Benchmark]: Witness Printer took 84.08ms. Allocated memory is still 234.9MB. Free memory was 145.3MB in the beginning and 142.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 23:53:18,721 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.93ms. Allocated memory is still 96.5MB. Free memory is still 57.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 522.49ms. Allocated memory is still 161.5MB. Free memory was 104.4MB in the beginning and 125.8MB in the end (delta: -21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.88ms. Allocated memory is still 161.5MB. Free memory was 125.8MB in the beginning and 123.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.21ms. Allocated memory is still 161.5MB. Free memory was 123.7MB in the beginning and 121.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 439.79ms. Allocated memory is still 161.5MB. Free memory was 121.6MB in the beginning and 101.4MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 6951.94ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 100.7MB in the beginning and 146.3MB in the end (delta: -45.6MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. * Witness Printer took 84.08ms. Allocated memory is still 234.9MB. Free memory was 145.3MB in the beginning and 142.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 46 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.8s, OverallIterations: 14, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 287 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 242 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 77 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1283 IncrementalHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 9 mSDtfsCounter, 1283 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 130 SyntacticMatches, 11 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=403occurred in iteration=8, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 477 NumberOfCodeBlocks, 447 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 510 ConstructedInterpolants, 2 QuantifiedInterpolants, 2644 SizeOfPredicates, 19 NumberOfNonLiveVariables, 411 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 22 InterpolantComputations, 11 PerfectInterpolantSequences, 955/1286 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-14 23:53:18,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE