./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/Ackermann01-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/termination-numeric/Ackermann01-1.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/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) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '64bit', '--witnessprinter.graph.data.programhash', '380ed529f726f53285b49ce40e57404dbe066b029b8c3af7ce337366515780a5'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-numeric/Ackermann01-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 64bit --witnessprinter.graph.data.programhash 380ed529f726f53285b49ce40e57404dbe066b029b8c3af7ce337366515780a5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:55:38,340 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:55:38,418 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-07 19:55:38,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:55:38,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:55:38,455 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:55:38,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:55:38,456 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:55:38,457 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:55:38,457 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:55:38,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:55:38,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:55:38,458 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:55:38,458 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:55:38,458 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:55:38,459 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:55:38,459 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 19:55:38,459 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:55:38,459 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:55:38,459 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 19:55:38,459 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:55:38,459 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 19:55:38,459 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:55:38,459 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-07 19:55:38,459 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:55:38,459 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 19:55:38,459 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:55:38,459 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:55:38,459 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:55:38,459 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:55:38,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:55:38,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:55:38,460 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:55:38,460 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:55:38,460 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 19:55:38,460 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:55:38,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:55:38,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:55:38,460 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:55:38,460 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:55:38,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:55:38,460 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 380ed529f726f53285b49ce40e57404dbe066b029b8c3af7ce337366515780a5 [2024-11-07 19:55:38,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:55:38,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:55:38,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:55:38,743 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:55:38,743 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:55:38,744 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/Ackermann01-1.c [2024-11-07 19:55:40,040 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:55:40,276 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:55:40,277 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/termination-numeric/Ackermann01-1.c [2024-11-07 19:55:40,289 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/919da36a6/800ca0579f5649fd949990f2186c68ae/FLAG37a0ef839 [2024-11-07 19:55:40,600 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/919da36a6/800ca0579f5649fd949990f2186c68ae [2024-11-07 19:55:40,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:55:40,604 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:55:40,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:55:40,605 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:55:40,608 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:55:40,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:55:40" (1/1) ... [2024-11-07 19:55:40,609 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b136d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:40, skipping insertion in model container [2024-11-07 19:55:40,609 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:55:40" (1/1) ... [2024-11-07 19:55:40,618 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:55:40,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:55:40,744 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:55:40,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:55:40,765 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:55:40,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:40 WrapperNode [2024-11-07 19:55:40,765 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:55:40,766 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:55:40,766 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:55:40,766 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:55:40,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:40" (1/1) ... [2024-11-07 19:55:40,777 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:40" (1/1) ... [2024-11-07 19:55:40,789 INFO L138 Inliner]: procedures = 13, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2024-11-07 19:55:40,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:55:40,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:55:40,790 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:55:40,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:55:40,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:40" (1/1) ... [2024-11-07 19:55:40,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:40" (1/1) ... [2024-11-07 19:55:40,802 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:40" (1/1) ... [2024-11-07 19:55:40,813 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-07 19:55:40,813 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:40" (1/1) ... [2024-11-07 19:55:40,813 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:40" (1/1) ... [2024-11-07 19:55:40,818 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:40" (1/1) ... [2024-11-07 19:55:40,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:40" (1/1) ... [2024-11-07 19:55:40,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:40" (1/1) ... [2024-11-07 19:55:40,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:40" (1/1) ... [2024-11-07 19:55:40,822 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:55:40,823 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:55:40,823 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:55:40,823 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:55:40,828 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:40" (1/1) ... [2024-11-07 19:55:40,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:55:40,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:55:40,859 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 19:55:40,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 19:55:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:55:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:55:40,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:55:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2024-11-07 19:55:40,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2024-11-07 19:55:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:55:40,946 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:55:40,948 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:55:41,088 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-07 19:55:41,088 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:55:41,095 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:55:41,095 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-07 19:55:41,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:55:41 BoogieIcfgContainer [2024-11-07 19:55:41,096 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:55:41,098 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:55:41,098 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:55:41,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:55:41,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:55:40" (1/3) ... [2024-11-07 19:55:41,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25816d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:55:41, skipping insertion in model container [2024-11-07 19:55:41,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:40" (2/3) ... [2024-11-07 19:55:41,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25816d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:55:41, skipping insertion in model container [2024-11-07 19:55:41,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:55:41" (3/3) ... [2024-11-07 19:55:41,105 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann01-1.c [2024-11-07 19:55:41,118 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:55:41,118 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-07 19:55:41,155 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:55:41,164 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;@348db176, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:55:41,164 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-07 19:55:41,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 25 states have (on average 1.52) internal successors, (38), 33 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 19:55:41,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-07 19:55:41,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:55:41,172 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:55:41,172 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:55:41,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:55:41,176 INFO L85 PathProgramCache]: Analyzing trace with hash 180823785, now seen corresponding path program 1 times [2024-11-07 19:55:41,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:55:41,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854262933] [2024-11-07 19:55:41,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:41,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:55:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:55:41,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:55:41,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854262933] [2024-11-07 19:55:41,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854262933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:55:41,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:55:41,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 19:55:41,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973557254] [2024-11-07 19:55:41,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:55:41,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:55:41,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:55:41,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:55:41,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:55:41,404 INFO L87 Difference]: Start difference. First operand has 39 states, 25 states have (on average 1.52) internal successors, (38), 33 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:55:41,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:55:41,573 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2024-11-07 19:55:41,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:55:41,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-07 19:55:41,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:55:41,581 INFO L225 Difference]: With dead ends: 71 [2024-11-07 19:55:41,581 INFO L226 Difference]: Without dead ends: 59 [2024-11-07 19:55:41,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:55:41,588 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 36 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 19:55:41,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 119 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 19:55:41,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-07 19:55:41,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2024-11-07 19:55:41,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 42 states have internal predecessors, (52), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-07 19:55:41,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2024-11-07 19:55:41,630 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 8 [2024-11-07 19:55:41,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:55:41,630 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2024-11-07 19:55:41,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:55:41,630 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2024-11-07 19:55:41,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-07 19:55:41,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:55:41,631 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:55:41,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:55:41,632 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:55:41,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:55:41,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1310575100, now seen corresponding path program 1 times [2024-11-07 19:55:41,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:55:41,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771096921] [2024-11-07 19:55:41,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:41,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:55:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:41,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:55:41,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:55:41,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771096921] [2024-11-07 19:55:41,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771096921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:55:41,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:55:41,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 19:55:41,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36801223] [2024-11-07 19:55:41,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:55:41,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:55:41,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:55:41,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:55:41,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:55:41,709 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:55:41,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:55:41,809 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2024-11-07 19:55:41,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:55:41,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-07 19:55:41,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:55:41,814 INFO L225 Difference]: With dead ends: 101 [2024-11-07 19:55:41,814 INFO L226 Difference]: Without dead ends: 93 [2024-11-07 19:55:41,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:55:41,815 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 36 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 19:55:41,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 105 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 19:55:41,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-07 19:55:41,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2024-11-07 19:55:41,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.5081967213114753) internal successors, (92), 70 states have internal predecessors, (92), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-07 19:55:41,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 115 transitions. [2024-11-07 19:55:41,836 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 115 transitions. Word has length 9 [2024-11-07 19:55:41,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:55:41,837 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 115 transitions. [2024-11-07 19:55:41,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:55:41,837 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 115 transitions. [2024-11-07 19:55:41,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-07 19:55:41,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:55:41,838 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:55:41,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 19:55:41,838 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:55:41,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:55:41,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1310570103, now seen corresponding path program 1 times [2024-11-07 19:55:41,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:55:41,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307896641] [2024-11-07 19:55:41,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:41,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:55:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:55:41,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:55:41,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307896641] [2024-11-07 19:55:41,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307896641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:55:41,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:55:41,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 19:55:41,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63195600] [2024-11-07 19:55:41,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:55:41,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:55:41,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:55:41,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:55:41,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:55:41,912 INFO L87 Difference]: Start difference. First operand 85 states and 115 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:55:42,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:55:42,005 INFO L93 Difference]: Finished difference Result 118 states and 157 transitions. [2024-11-07 19:55:42,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:55:42,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-07 19:55:42,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:55:42,007 INFO L225 Difference]: With dead ends: 118 [2024-11-07 19:55:42,009 INFO L226 Difference]: Without dead ends: 114 [2024-11-07 19:55:42,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:55:42,011 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 34 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 19:55:42,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 97 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 19:55:42,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-07 19:55:42,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2024-11-07 19:55:42,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 74 states have (on average 1.445945945945946) internal successors, (107), 83 states have internal predecessors, (107), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-07 19:55:42,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 136 transitions. [2024-11-07 19:55:42,029 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 136 transitions. Word has length 9 [2024-11-07 19:55:42,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:55:42,029 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 136 transitions. [2024-11-07 19:55:42,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:55:42,029 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 136 transitions. [2024-11-07 19:55:42,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-07 19:55:42,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:55:42,030 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:55:42,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 19:55:42,030 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ackermannErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:55:42,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:55:42,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1973122508, now seen corresponding path program 1 times [2024-11-07 19:55:42,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:55:42,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250859589] [2024-11-07 19:55:42,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:42,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:55:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:42,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:55:42,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:55:42,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250859589] [2024-11-07 19:55:42,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250859589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:55:42,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:55:42,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 19:55:42,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951857343] [2024-11-07 19:55:42,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:55:42,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:55:42,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:55:42,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:55:42,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:55:42,090 INFO L87 Difference]: Start difference. First operand 102 states and 136 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:55:42,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:55:42,181 INFO L93 Difference]: Finished difference Result 110 states and 153 transitions. [2024-11-07 19:55:42,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:55:42,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-07 19:55:42,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:55:42,183 INFO L225 Difference]: With dead ends: 110 [2024-11-07 19:55:42,183 INFO L226 Difference]: Without dead ends: 108 [2024-11-07 19:55:42,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:55:42,184 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 35 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 19:55:42,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 54 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 19:55:42,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-07 19:55:42,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 100. [2024-11-07 19:55:42,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 81 states have internal predecessors, (97), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-07 19:55:42,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 126 transitions. [2024-11-07 19:55:42,213 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 126 transitions. Word has length 10 [2024-11-07 19:55:42,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:55:42,213 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 126 transitions. [2024-11-07 19:55:42,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:55:42,213 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 126 transitions. [2024-11-07 19:55:42,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-07 19:55:42,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:55:42,213 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:55:42,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 19:55:42,214 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:55:42,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:55:42,214 INFO L85 PathProgramCache]: Analyzing trace with hash -612398535, now seen corresponding path program 1 times [2024-11-07 19:55:42,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:55:42,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734710640] [2024-11-07 19:55:42,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:42,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:55:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:42,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:55:42,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:55:42,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734710640] [2024-11-07 19:55:42,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734710640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:55:42,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:55:42,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 19:55:42,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569376539] [2024-11-07 19:55:42,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:55:42,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:55:42,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:55:42,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:55:42,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:55:42,305 INFO L87 Difference]: Start difference. First operand 100 states and 126 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:55:42,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:55:42,365 INFO L93 Difference]: Finished difference Result 170 states and 225 transitions. [2024-11-07 19:55:42,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:55:42,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-07 19:55:42,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:55:42,367 INFO L225 Difference]: With dead ends: 170 [2024-11-07 19:55:42,367 INFO L226 Difference]: Without dead ends: 99 [2024-11-07 19:55:42,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:55:42,369 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 25 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 19:55:42,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 89 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 19:55:42,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-07 19:55:42,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2024-11-07 19:55:42,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 71 states have (on average 1.295774647887324) internal successors, (92), 78 states have internal predecessors, (92), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-07 19:55:42,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 119 transitions. [2024-11-07 19:55:42,387 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 119 transitions. Word has length 15 [2024-11-07 19:55:42,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:55:42,387 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 119 transitions. [2024-11-07 19:55:42,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:55:42,388 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 119 transitions. [2024-11-07 19:55:42,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-07 19:55:42,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:55:42,388 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:55:42,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 19:55:42,388 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:55:42,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:55:42,389 INFO L85 PathProgramCache]: Analyzing trace with hash -612398311, now seen corresponding path program 1 times [2024-11-07 19:55:42,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:55:42,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969495857] [2024-11-07 19:55:42,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:42,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:55:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:55:42,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:55:42,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969495857] [2024-11-07 19:55:42,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969495857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:55:42,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277139863] [2024-11-07 19:55:42,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:42,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:55:42,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:55:42,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:55:42,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 19:55:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:42,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:55:42,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:55:42,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:55:42,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:55:42,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:55:42,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277139863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:55:42,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:55:42,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-07 19:55:42,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297330013] [2024-11-07 19:55:42,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:55:42,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 19:55:42,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:55:42,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 19:55:42,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-07 19:55:42,649 INFO L87 Difference]: Start difference. First operand 96 states and 119 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:55:42,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:55:42,944 INFO L93 Difference]: Finished difference Result 276 states and 359 transitions. [2024-11-07 19:55:42,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:55:42,945 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-07 19:55:42,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:55:42,950 INFO L225 Difference]: With dead ends: 276 [2024-11-07 19:55:42,950 INFO L226 Difference]: Without dead ends: 274 [2024-11-07 19:55:42,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-07 19:55:42,953 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 215 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 19:55:42,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 206 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 19:55:42,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-07 19:55:43,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 236. [2024-11-07 19:55:43,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 182 states have (on average 1.2637362637362637) internal successors, (230), 189 states have internal predecessors, (230), 36 states have call successors, (36), 13 states have call predecessors, (36), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-07 19:55:43,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 299 transitions. [2024-11-07 19:55:43,008 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 299 transitions. Word has length 15 [2024-11-07 19:55:43,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:55:43,008 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 299 transitions. [2024-11-07 19:55:43,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:55:43,008 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 299 transitions. [2024-11-07 19:55:43,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-07 19:55:43,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:55:43,008 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:55:43,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-07 19:55:43,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:55:43,212 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:55:43,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:55:43,212 INFO L85 PathProgramCache]: Analyzing trace with hash -600892461, now seen corresponding path program 1 times [2024-11-07 19:55:43,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:55:43,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505322592] [2024-11-07 19:55:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:43,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:55:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:43,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:55:43,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:55:43,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505322592] [2024-11-07 19:55:43,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505322592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:55:43,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193610833] [2024-11-07 19:55:43,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:43,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:55:43,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:55:43,279 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:55:43,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 19:55:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:43,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:55:43,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:55:43,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:55:43,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:55:43,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:55:43,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193610833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:55:43,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:55:43,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-07 19:55:43,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534422787] [2024-11-07 19:55:43,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:55:43,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 19:55:43,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:55:43,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 19:55:43,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-07 19:55:43,418 INFO L87 Difference]: Start difference. First operand 236 states and 299 transitions. Second operand has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:55:43,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:55:43,682 INFO L93 Difference]: Finished difference Result 498 states and 669 transitions. [2024-11-07 19:55:43,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 19:55:43,683 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-07 19:55:43,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:55:43,687 INFO L225 Difference]: With dead ends: 498 [2024-11-07 19:55:43,687 INFO L226 Difference]: Without dead ends: 496 [2024-11-07 19:55:43,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-11-07 19:55:43,688 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 142 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 19:55:43,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 162 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 19:55:43,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2024-11-07 19:55:43,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 445. [2024-11-07 19:55:43,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 347 states have (on average 1.2276657060518732) internal successors, (426), 354 states have internal predecessors, (426), 69 states have call successors, (69), 24 states have call predecessors, (69), 23 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-07 19:55:43,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 561 transitions. [2024-11-07 19:55:43,754 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 561 transitions. Word has length 16 [2024-11-07 19:55:43,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:55:43,754 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 561 transitions. [2024-11-07 19:55:43,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:55:43,754 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 561 transitions. [2024-11-07 19:55:43,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-07 19:55:43,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:55:43,755 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:55:43,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 19:55:43,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:55:43,960 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:55:43,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:55:43,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1979487198, now seen corresponding path program 1 times [2024-11-07 19:55:43,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:55:43,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438199385] [2024-11-07 19:55:43,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:43,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:55:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:44,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 19:55:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:44,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:55:44,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:55:44,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438199385] [2024-11-07 19:55:44,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438199385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:55:44,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592374924] [2024-11-07 19:55:44,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:44,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:55:44,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:55:44,120 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:55:44,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 19:55:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:44,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:55:44,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:55:44,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:55:44,225 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:55:44,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592374924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:55:44,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 19:55:44,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-07 19:55:44,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669248269] [2024-11-07 19:55:44,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:55:44,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 19:55:44,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:55:44,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 19:55:44,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-07 19:55:44,227 INFO L87 Difference]: Start difference. First operand 445 states and 561 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 19:55:44,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:55:44,426 INFO L93 Difference]: Finished difference Result 494 states and 650 transitions. [2024-11-07 19:55:44,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:55:44,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-07 19:55:44,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:55:44,432 INFO L225 Difference]: With dead ends: 494 [2024-11-07 19:55:44,435 INFO L226 Difference]: Without dead ends: 493 [2024-11-07 19:55:44,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-07 19:55:44,436 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 45 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 19:55:44,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 139 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 19:55:44,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2024-11-07 19:55:44,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 444. [2024-11-07 19:55:44,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 347 states have (on average 1.2161383285302594) internal successors, (422), 353 states have internal predecessors, (422), 69 states have call successors, (69), 24 states have call predecessors, (69), 23 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-07 19:55:44,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 557 transitions. [2024-11-07 19:55:44,494 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 557 transitions. Word has length 24 [2024-11-07 19:55:44,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:55:44,495 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 557 transitions. [2024-11-07 19:55:44,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 19:55:44,495 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 557 transitions. [2024-11-07 19:55:44,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-07 19:55:44,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:55:44,498 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:55:44,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-07 19:55:44,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:55:44,702 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:55:44,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:55:44,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1234561058, now seen corresponding path program 1 times [2024-11-07 19:55:44,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:55:44,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536846017] [2024-11-07 19:55:44,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:44,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:55:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:44,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 19:55:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:55:44,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:55:44,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536846017] [2024-11-07 19:55:44,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536846017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:55:44,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278260815] [2024-11-07 19:55:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:44,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:55:44,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:55:44,818 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:55:44,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 19:55:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:44,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 19:55:44,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:55:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:55:44,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:55:45,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:55:45,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278260815] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:55:45,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:55:45,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-07 19:55:45,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578126510] [2024-11-07 19:55:45,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:55:45,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 19:55:45,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:55:45,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 19:55:45,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-07 19:55:45,099 INFO L87 Difference]: Start difference. First operand 444 states and 557 transitions. Second operand has 15 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 13 states have internal predecessors, (41), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 19:55:45,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:55:45,503 INFO L93 Difference]: Finished difference Result 807 states and 1179 transitions. [2024-11-07 19:55:45,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-07 19:55:45,504 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 13 states have internal predecessors, (41), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-07 19:55:45,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:55:45,509 INFO L225 Difference]: With dead ends: 807 [2024-11-07 19:55:45,509 INFO L226 Difference]: Without dead ends: 805 [2024-11-07 19:55:45,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2024-11-07 19:55:45,510 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 123 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 19:55:45,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 177 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 19:55:45,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-11-07 19:55:45,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 641. [2024-11-07 19:55:45,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 477 states have (on average 1.2033542976939204) internal successors, (574), 505 states have internal predecessors, (574), 107 states have call successors, (107), 31 states have call predecessors, (107), 52 states have return successors, (194), 104 states have call predecessors, (194), 103 states have call successors, (194) [2024-11-07 19:55:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 875 transitions. [2024-11-07 19:55:45,606 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 875 transitions. Word has length 25 [2024-11-07 19:55:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:55:45,606 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 875 transitions. [2024-11-07 19:55:45,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 13 states have internal predecessors, (41), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 19:55:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 875 transitions. [2024-11-07 19:55:45,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-07 19:55:45,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:55:45,607 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 19:55:45,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 19:55:45,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-07 19:55:45,812 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:55:45,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:55:45,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2137182870, now seen corresponding path program 1 times [2024-11-07 19:55:45,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:55:45,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317081078] [2024-11-07 19:55:45,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:45,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:55:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:55:45,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:55:45,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317081078] [2024-11-07 19:55:45,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317081078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:55:45,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346601029] [2024-11-07 19:55:45,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:45,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:55:45,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:55:45,904 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:55:45,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-07 19:55:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:45,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 19:55:45,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:55:45,987 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:55:45,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:55:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:55:46,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346601029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:55:46,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:55:46,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-07 19:55:46,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661570471] [2024-11-07 19:55:46,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:55:46,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 19:55:46,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:55:46,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 19:55:46,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-07 19:55:46,100 INFO L87 Difference]: Start difference. First operand 641 states and 875 transitions. Second operand has 16 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:55:46,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:55:46,445 INFO L93 Difference]: Finished difference Result 997 states and 1430 transitions. [2024-11-07 19:55:46,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-07 19:55:46,445 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-07 19:55:46,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:55:46,453 INFO L225 Difference]: With dead ends: 997 [2024-11-07 19:55:46,453 INFO L226 Difference]: Without dead ends: 996 [2024-11-07 19:55:46,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2024-11-07 19:55:46,454 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 184 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 19:55:46,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 292 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 19:55:46,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2024-11-07 19:55:46,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 917. [2024-11-07 19:55:46,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 681 states have (on average 1.171806167400881) internal successors, (798), 721 states have internal predecessors, (798), 155 states have call successors, (155), 43 states have call predecessors, (155), 76 states have return successors, (278), 152 states have call predecessors, (278), 151 states have call successors, (278) [2024-11-07 19:55:46,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1231 transitions. [2024-11-07 19:55:46,560 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1231 transitions. Word has length 27 [2024-11-07 19:55:46,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:55:46,561 INFO L471 AbstractCegarLoop]: Abstraction has 917 states and 1231 transitions. [2024-11-07 19:55:46,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:55:46,561 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1231 transitions. [2024-11-07 19:55:46,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-07 19:55:46,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:55:46,563 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:55:46,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-07 19:55:46,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-07 19:55:46,763 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:55:46,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:55:46,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1007222953, now seen corresponding path program 1 times [2024-11-07 19:55:46,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:55:46,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010362697] [2024-11-07 19:55:46,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:46,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:55:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:46,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 19:55:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:46,847 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 19:55:46,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:55:46,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010362697] [2024-11-07 19:55:46,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010362697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:55:46,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230649065] [2024-11-07 19:55:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:46,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:55:46,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:55:46,849 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:55:46,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-07 19:55:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:46,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 19:55:46,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:55:46,940 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 19:55:46,940 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:55:47,078 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 19:55:47,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230649065] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:55:47,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:55:47,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-07 19:55:47,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395949638] [2024-11-07 19:55:47,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:55:47,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 19:55:47,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:55:47,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 19:55:47,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-07 19:55:47,080 INFO L87 Difference]: Start difference. First operand 917 states and 1231 transitions. Second operand has 15 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 13 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 19:55:47,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:55:47,479 INFO L93 Difference]: Finished difference Result 1478 states and 2205 transitions. [2024-11-07 19:55:47,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 19:55:47,480 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 13 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-07 19:55:47,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:55:47,488 INFO L225 Difference]: With dead ends: 1478 [2024-11-07 19:55:47,489 INFO L226 Difference]: Without dead ends: 1473 [2024-11-07 19:55:47,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2024-11-07 19:55:47,491 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 85 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 19:55:47,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 163 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 19:55:47,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2024-11-07 19:55:47,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1080. [2024-11-07 19:55:47,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 804 states have (on average 1.1703980099502487) internal successors, (941), 853 states have internal predecessors, (941), 175 states have call successors, (175), 53 states have call predecessors, (175), 96 states have return successors, (415), 173 states have call predecessors, (415), 170 states have call successors, (415) [2024-11-07 19:55:47,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1531 transitions. [2024-11-07 19:55:47,611 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1531 transitions. Word has length 27 [2024-11-07 19:55:47,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:55:47,612 INFO L471 AbstractCegarLoop]: Abstraction has 1080 states and 1531 transitions. [2024-11-07 19:55:47,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 13 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 19:55:47,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1531 transitions. [2024-11-07 19:55:47,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-07 19:55:47,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:55:47,614 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:55:47,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 19:55:47,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-07 19:55:47,814 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:55:47,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:55:47,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1878013265, now seen corresponding path program 1 times [2024-11-07 19:55:47,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:55:47,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240131983] [2024-11-07 19:55:47,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:47,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:55:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:47,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 19:55:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:47,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 19:55:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:47,935 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:55:47,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:55:47,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240131983] [2024-11-07 19:55:47,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240131983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:55:47,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342491164] [2024-11-07 19:55:47,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:47,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:55:47,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:55:47,938 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:55:47,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-07 19:55:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:47,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 19:55:47,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:55:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:55:48,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:55:48,235 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:55:48,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342491164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:55:48,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:55:48,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-07 19:55:48,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224666815] [2024-11-07 19:55:48,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:55:48,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 19:55:48,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:55:48,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 19:55:48,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-07 19:55:48,237 INFO L87 Difference]: Start difference. First operand 1080 states and 1531 transitions. Second operand has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 14 states have internal predecessors, (43), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-07 19:55:48,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:55:48,824 INFO L93 Difference]: Finished difference Result 1883 states and 3145 transitions. [2024-11-07 19:55:48,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 19:55:48,824 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 14 states have internal predecessors, (43), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2024-11-07 19:55:48,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:55:48,840 INFO L225 Difference]: With dead ends: 1883 [2024-11-07 19:55:48,840 INFO L226 Difference]: Without dead ends: 1869 [2024-11-07 19:55:48,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2024-11-07 19:55:48,843 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 108 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 19:55:48,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 179 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 19:55:48,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2024-11-07 19:55:49,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1577. [2024-11-07 19:55:49,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1149 states have (on average 1.162750217580505) internal successors, (1336), 1210 states have internal predecessors, (1336), 271 states have call successors, (271), 73 states have call predecessors, (271), 152 states have return successors, (774), 293 states have call predecessors, (774), 263 states have call successors, (774) [2024-11-07 19:55:49,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2381 transitions. [2024-11-07 19:55:49,052 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2381 transitions. Word has length 34 [2024-11-07 19:55:49,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:55:49,052 INFO L471 AbstractCegarLoop]: Abstraction has 1577 states and 2381 transitions. [2024-11-07 19:55:49,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 14 states have internal predecessors, (43), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-07 19:55:49,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2381 transitions. [2024-11-07 19:55:49,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-07 19:55:49,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:55:49,053 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:55:49,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-07 19:55:49,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:55:49,254 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:55:49,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:55:49,254 INFO L85 PathProgramCache]: Analyzing trace with hash 889503256, now seen corresponding path program 1 times [2024-11-07 19:55:49,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:55:49,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794269484] [2024-11-07 19:55:49,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:49,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:55:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:49,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 19:55:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:49,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 19:55:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:55:49,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:55:49,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794269484] [2024-11-07 19:55:49,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794269484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:55:49,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538336866] [2024-11-07 19:55:49,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:49,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:55:49,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:55:49,393 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:55:49,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-07 19:55:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:49,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 19:55:49,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:55:49,480 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:55:49,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:55:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:55:49,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538336866] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 19:55:49,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:55:49,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 17 [2024-11-07 19:55:49,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708736283] [2024-11-07 19:55:49,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:55:49,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 19:55:49,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:55:49,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 19:55:49,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-11-07 19:55:49,676 INFO L87 Difference]: Start difference. First operand 1577 states and 2381 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 19:55:50,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:55:50,042 INFO L93 Difference]: Finished difference Result 1784 states and 2841 transitions. [2024-11-07 19:55:50,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 19:55:50,042 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2024-11-07 19:55:50,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:55:50,052 INFO L225 Difference]: With dead ends: 1784 [2024-11-07 19:55:50,052 INFO L226 Difference]: Without dead ends: 1783 [2024-11-07 19:55:50,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2024-11-07 19:55:50,055 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 36 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 19:55:50,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 206 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 19:55:50,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2024-11-07 19:55:50,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1614. [2024-11-07 19:55:50,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1173 states have (on average 1.1568627450980393) internal successors, (1357), 1231 states have internal predecessors, (1357), 287 states have call successors, (287), 73 states have call predecessors, (287), 149 states have return successors, (703), 309 states have call predecessors, (703), 279 states have call successors, (703) [2024-11-07 19:55:50,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2347 transitions. [2024-11-07 19:55:50,257 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2347 transitions. Word has length 36 [2024-11-07 19:55:50,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:55:50,257 INFO L471 AbstractCegarLoop]: Abstraction has 1614 states and 2347 transitions. [2024-11-07 19:55:50,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 19:55:50,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2347 transitions. [2024-11-07 19:55:50,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-07 19:55:50,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:55:50,259 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:55:50,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-07 19:55:50,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:55:50,460 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:55:50,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:55:50,460 INFO L85 PathProgramCache]: Analyzing trace with hash 791091541, now seen corresponding path program 2 times [2024-11-07 19:55:50,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:55:50,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476063704] [2024-11-07 19:55:50,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:50,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:55:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:50,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-07 19:55:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:50,628 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 19:55:50,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:55:50,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476063704] [2024-11-07 19:55:50,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476063704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:55:50,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885185883] [2024-11-07 19:55:50,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:55:50,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:55:50,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:55:50,632 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:55:50,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-07 19:55:50,679 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:55:50,680 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:55:50,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-07 19:55:50,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:55:50,758 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 19:55:50,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:55:50,992 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 19:55:50,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885185883] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:55:50,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:55:50,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2024-11-07 19:55:50,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499238442] [2024-11-07 19:55:50,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:55:50,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-07 19:55:50,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:55:50,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-07 19:55:50,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-11-07 19:55:50,994 INFO L87 Difference]: Start difference. First operand 1614 states and 2347 transitions. Second operand has 23 states, 20 states have (on average 3.05) internal successors, (61), 17 states have internal predecessors, (61), 8 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 19:55:51,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:55:51,993 INFO L93 Difference]: Finished difference Result 3197 states and 5554 transitions. [2024-11-07 19:55:51,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-07 19:55:51,994 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 3.05) internal successors, (61), 17 states have internal predecessors, (61), 8 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2024-11-07 19:55:51,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:55:52,015 INFO L225 Difference]: With dead ends: 3197 [2024-11-07 19:55:52,015 INFO L226 Difference]: Without dead ends: 3196 [2024-11-07 19:55:52,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=491, Invalid=1765, Unknown=0, NotChecked=0, Total=2256 [2024-11-07 19:55:52,018 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 380 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 19:55:52,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 194 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 19:55:52,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3196 states. [2024-11-07 19:55:52,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3196 to 2201. [2024-11-07 19:55:52,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 1612 states have (on average 1.1557071960297767) internal successors, (1863), 1689 states have internal predecessors, (1863), 372 states have call successors, (372), 107 states have call predecessors, (372), 212 states have return successors, (1147), 404 states have call predecessors, (1147), 364 states have call successors, (1147) [2024-11-07 19:55:52,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3382 transitions. [2024-11-07 19:55:52,313 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3382 transitions. Word has length 43 [2024-11-07 19:55:52,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:55:52,314 INFO L471 AbstractCegarLoop]: Abstraction has 2201 states and 3382 transitions. [2024-11-07 19:55:52,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 3.05) internal successors, (61), 17 states have internal predecessors, (61), 8 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 19:55:52,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3382 transitions. [2024-11-07 19:55:52,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-07 19:55:52,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:55:52,320 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:55:52,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-07 19:55:52,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:55:52,521 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:55:52,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:55:52,521 INFO L85 PathProgramCache]: Analyzing trace with hash -328093970, now seen corresponding path program 2 times [2024-11-07 19:55:52,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:55:52,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458798308] [2024-11-07 19:55:52,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:52,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:55:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:52,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 19:55:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:52,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 19:55:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:55:52,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:55:52,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458798308] [2024-11-07 19:55:52,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458798308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:55:52,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017041724] [2024-11-07 19:55:52,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:55:52,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:55:52,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:55:52,650 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:55:52,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-07 19:55:52,694 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:55:52,694 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:55:52,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-07 19:55:52,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:55:52,743 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:55:52,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:55:52,959 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:55:52,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017041724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:55:52,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:55:52,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-07 19:55:52,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334790402] [2024-11-07 19:55:52,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:55:52,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 19:55:52,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:55:52,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 19:55:52,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-11-07 19:55:52,961 INFO L87 Difference]: Start difference. First operand 2201 states and 3382 transitions. Second operand has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 16 states have internal predecessors, (61), 5 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-07 19:55:54,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:55:54,195 INFO L93 Difference]: Finished difference Result 4455 states and 8209 transitions. [2024-11-07 19:55:54,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-07 19:55:54,195 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 16 states have internal predecessors, (61), 5 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) Word has length 44 [2024-11-07 19:55:54,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:55:54,216 INFO L225 Difference]: With dead ends: 4455 [2024-11-07 19:55:54,216 INFO L226 Difference]: Without dead ends: 3140 [2024-11-07 19:55:54,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=501, Invalid=2049, Unknown=0, NotChecked=0, Total=2550 [2024-11-07 19:55:54,234 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 178 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 19:55:54,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 338 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 19:55:54,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2024-11-07 19:55:54,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 2494. [2024-11-07 19:55:54,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2494 states, 1823 states have (on average 1.1492046077893583) internal successors, (2095), 1909 states have internal predecessors, (2095), 428 states have call successors, (428), 122 states have call predecessors, (428), 238 states have return successors, (1243), 462 states have call predecessors, (1243), 420 states have call successors, (1243) [2024-11-07 19:55:54,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 3766 transitions. [2024-11-07 19:55:54,661 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 3766 transitions. Word has length 44 [2024-11-07 19:55:54,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:55:54,663 INFO L471 AbstractCegarLoop]: Abstraction has 2494 states and 3766 transitions. [2024-11-07 19:55:54,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 16 states have internal predecessors, (61), 5 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-07 19:55:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 3766 transitions. [2024-11-07 19:55:54,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-07 19:55:54,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:55:54,666 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:55:54,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-07 19:55:54,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-07 19:55:54,867 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:55:54,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:55:54,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1781931564, now seen corresponding path program 1 times [2024-11-07 19:55:54,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:55:54,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294326625] [2024-11-07 19:55:54,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:54,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:55:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:54,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 19:55:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:54,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-07 19:55:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:54,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-07 19:55:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:54,942 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-07 19:55:54,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:55:54,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294326625] [2024-11-07 19:55:54,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294326625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:55:54,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139213191] [2024-11-07 19:55:54,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:54,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:55:54,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:55:54,945 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:55:54,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-07 19:55:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:54,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:55:54,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:55:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-07 19:55:55,042 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:55:55,154 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-07 19:55:55,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139213191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:55:55,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:55:55,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 12 [2024-11-07 19:55:55,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996219855] [2024-11-07 19:55:55,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:55:55,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 19:55:55,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:55:55,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 19:55:55,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-07 19:55:55,155 INFO L87 Difference]: Start difference. First operand 2494 states and 3766 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-07 19:55:55,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:55:55,401 INFO L93 Difference]: Finished difference Result 3517 states and 5520 transitions. [2024-11-07 19:55:55,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 19:55:55,402 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) Word has length 44 [2024-11-07 19:55:55,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:55:55,410 INFO L225 Difference]: With dead ends: 3517 [2024-11-07 19:55:55,410 INFO L226 Difference]: Without dead ends: 1211 [2024-11-07 19:55:55,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-07 19:55:55,426 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 71 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 19:55:55,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 107 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 19:55:55,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2024-11-07 19:55:55,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1182. [2024-11-07 19:55:55,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 881 states have (on average 1.112372304199773) internal successors, (980), 905 states have internal predecessors, (980), 212 states have call successors, (212), 67 states have call predecessors, (212), 85 states have return successors, (333), 209 states have call predecessors, (333), 208 states have call successors, (333) [2024-11-07 19:55:55,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1525 transitions. [2024-11-07 19:55:55,584 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1525 transitions. Word has length 44 [2024-11-07 19:55:55,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:55:55,584 INFO L471 AbstractCegarLoop]: Abstraction has 1182 states and 1525 transitions. [2024-11-07 19:55:55,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-07 19:55:55,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1525 transitions. [2024-11-07 19:55:55,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-07 19:55:55,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:55:55,586 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:55:55,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-07 19:55:55,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-07 19:55:55,788 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:55:55,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:55:55,789 INFO L85 PathProgramCache]: Analyzing trace with hash -603852535, now seen corresponding path program 1 times [2024-11-07 19:55:55,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:55:55,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394559120] [2024-11-07 19:55:55,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:55,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:55:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:55,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 19:55:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:55,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-07 19:55:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:55,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 19:55:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:55,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 19:55:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 21 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-07 19:55:56,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:55:56,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394559120] [2024-11-07 19:55:56,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394559120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:55:56,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329007652] [2024-11-07 19:55:56,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:56,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:55:56,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:55:56,026 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:55:56,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-07 19:55:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:56,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 19:55:56,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:55:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-07 19:55:56,135 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:55:56,638 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 19 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-07 19:55:56,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329007652] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:55:56,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:55:56,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 26 [2024-11-07 19:55:56,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367394122] [2024-11-07 19:55:56,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:55:56,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-07 19:55:56,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:55:56,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-07 19:55:56,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2024-11-07 19:55:56,640 INFO L87 Difference]: Start difference. First operand 1182 states and 1525 transitions. Second operand has 27 states, 26 states have (on average 2.230769230769231) internal successors, (58), 21 states have internal predecessors, (58), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-07 19:55:58,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:55:58,101 INFO L93 Difference]: Finished difference Result 3167 states and 5904 transitions. [2024-11-07 19:55:58,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-07 19:55:58,101 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.230769230769231) internal successors, (58), 21 states have internal predecessors, (58), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) Word has length 53 [2024-11-07 19:55:58,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:55:58,123 INFO L225 Difference]: With dead ends: 3167 [2024-11-07 19:55:58,123 INFO L226 Difference]: Without dead ends: 3161 [2024-11-07 19:55:58,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1687 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1079, Invalid=5083, Unknown=0, NotChecked=0, Total=6162 [2024-11-07 19:55:58,128 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 141 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 19:55:58,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 255 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 19:55:58,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2024-11-07 19:55:58,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 2249. [2024-11-07 19:55:58,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2249 states, 1552 states have (on average 1.0869845360824741) internal successors, (1687), 1580 states have internal predecessors, (1687), 429 states have call successors, (429), 81 states have call predecessors, (429), 264 states have return successors, (2579), 587 states have call predecessors, (2579), 423 states have call successors, (2579) [2024-11-07 19:55:58,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 4695 transitions. [2024-11-07 19:55:58,508 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 4695 transitions. Word has length 53 [2024-11-07 19:55:58,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:55:58,508 INFO L471 AbstractCegarLoop]: Abstraction has 2249 states and 4695 transitions. [2024-11-07 19:55:58,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.230769230769231) internal successors, (58), 21 states have internal predecessors, (58), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-07 19:55:58,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 4695 transitions. [2024-11-07 19:55:58,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-07 19:55:58,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:55:58,512 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-07 19:55:58,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-07 19:55:58,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-07 19:55:58,713 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:55:58,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:55:58,713 INFO L85 PathProgramCache]: Analyzing trace with hash 38844242, now seen corresponding path program 1 times [2024-11-07 19:55:58,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:55:58,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299422851] [2024-11-07 19:55:58,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:58,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:55:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:58,870 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 19:55:58,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:55:58,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299422851] [2024-11-07 19:55:58,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299422851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:55:58,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615607872] [2024-11-07 19:55:58,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:55:58,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:55:58,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:55:58,873 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:55:58,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-07 19:55:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:55:58,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-07 19:55:58,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:55:59,005 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 19:55:59,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:55:59,196 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 19:55:59,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615607872] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:55:59,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:55:59,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-11-07 19:55:59,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867337868] [2024-11-07 19:55:59,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:55:59,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 19:55:59,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:55:59,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 19:55:59,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2024-11-07 19:55:59,198 INFO L87 Difference]: Start difference. First operand 2249 states and 4695 transitions. Second operand has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (16), 10 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:56:00,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:56:00,284 INFO L93 Difference]: Finished difference Result 6168 states and 13112 transitions. [2024-11-07 19:56:00,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-07 19:56:00,285 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (16), 10 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-07 19:56:00,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:56:00,330 INFO L225 Difference]: With dead ends: 6168 [2024-11-07 19:56:00,330 INFO L226 Difference]: Without dead ends: 6167 [2024-11-07 19:56:00,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2024-11-07 19:56:00,335 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 507 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 19:56:00,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 373 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 19:56:00,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6167 states. [2024-11-07 19:56:01,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6167 to 6083. [2024-11-07 19:56:01,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6083 states, 4222 states have (on average 1.0888204642349597) internal successors, (4597), 4304 states have internal predecessors, (4597), 1161 states have call successors, (1161), 231 states have call predecessors, (1161), 696 states have return successors, (6995), 1547 states have call predecessors, (6995), 1155 states have call successors, (6995) [2024-11-07 19:56:01,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6083 states to 6083 states and 12753 transitions. [2024-11-07 19:56:01,152 INFO L78 Accepts]: Start accepts. Automaton has 6083 states and 12753 transitions. Word has length 57 [2024-11-07 19:56:01,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:56:01,152 INFO L471 AbstractCegarLoop]: Abstraction has 6083 states and 12753 transitions. [2024-11-07 19:56:01,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (16), 10 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:56:01,152 INFO L276 IsEmpty]: Start isEmpty. Operand 6083 states and 12753 transitions. [2024-11-07 19:56:01,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-07 19:56:01,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:56:01,154 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:56:01,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-07 19:56:01,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-07 19:56:01,358 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:56:01,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:56:01,359 INFO L85 PathProgramCache]: Analyzing trace with hash -476681264, now seen corresponding path program 1 times [2024-11-07 19:56:01,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:56:01,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109675538] [2024-11-07 19:56:01,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:56:01,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:56:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:01,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 19:56:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:01,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-07 19:56:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:01,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 19:56:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:01,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 19:56:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:01,571 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-07 19:56:01,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:56:01,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109675538] [2024-11-07 19:56:01,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109675538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:56:01,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425034860] [2024-11-07 19:56:01,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:56:01,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:56:01,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:56:01,574 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:56:01,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-07 19:56:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:01,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 19:56:01,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:56:01,675 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-07 19:56:01,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:56:02,223 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-07 19:56:02,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425034860] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:56:02,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:56:02,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 26 [2024-11-07 19:56:02,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296508518] [2024-11-07 19:56:02,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:56:02,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-07 19:56:02,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:56:02,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-07 19:56:02,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2024-11-07 19:56:02,225 INFO L87 Difference]: Start difference. First operand 6083 states and 12753 transitions. Second operand has 27 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 21 states have internal predecessors, (62), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-07 19:56:05,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:56:05,844 INFO L93 Difference]: Finished difference Result 24358 states and 94287 transitions. [2024-11-07 19:56:05,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-07 19:56:05,844 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 21 states have internal predecessors, (62), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) Word has length 55 [2024-11-07 19:56:05,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:56:06,031 INFO L225 Difference]: With dead ends: 24358 [2024-11-07 19:56:06,031 INFO L226 Difference]: Without dead ends: 19150 [2024-11-07 19:56:06,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1184, Invalid=4822, Unknown=0, NotChecked=0, Total=6006 [2024-11-07 19:56:06,150 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 131 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 19:56:06,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 395 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 19:56:06,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19150 states. [2024-11-07 19:56:09,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19150 to 13376. [2024-11-07 19:56:09,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13376 states, 8766 states have (on average 1.0571526351813827) internal successors, (9267), 8809 states have internal predecessors, (9267), 2669 states have call successors, (2669), 308 states have call predecessors, (2669), 1937 states have return successors, (37183), 4258 states have call predecessors, (37183), 2658 states have call successors, (37183) [2024-11-07 19:56:09,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13376 states to 13376 states and 49119 transitions. [2024-11-07 19:56:09,542 INFO L78 Accepts]: Start accepts. Automaton has 13376 states and 49119 transitions. Word has length 55 [2024-11-07 19:56:09,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:56:09,543 INFO L471 AbstractCegarLoop]: Abstraction has 13376 states and 49119 transitions. [2024-11-07 19:56:09,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 21 states have internal predecessors, (62), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-07 19:56:09,544 INFO L276 IsEmpty]: Start isEmpty. Operand 13376 states and 49119 transitions. [2024-11-07 19:56:09,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-07 19:56:09,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:56:09,546 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-07 19:56:09,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-07 19:56:09,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:56:09,750 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:56:09,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:56:09,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1608770754, now seen corresponding path program 2 times [2024-11-07 19:56:09,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:56:09,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756452017] [2024-11-07 19:56:09,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:56:09,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:56:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:09,922 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:56:09,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:56:09,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756452017] [2024-11-07 19:56:09,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756452017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:56:09,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351065668] [2024-11-07 19:56:09,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:56:09,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:56:09,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:56:09,924 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:56:09,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-07 19:56:09,973 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:56:09,973 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:56:09,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-07 19:56:09,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:56:10,032 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:56:10,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:56:10,305 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:56:10,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351065668] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:56:10,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:56:10,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-11-07 19:56:10,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632701587] [2024-11-07 19:56:10,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:56:10,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 19:56:10,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:56:10,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 19:56:10,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=748, Unknown=0, NotChecked=0, Total=992 [2024-11-07 19:56:10,307 INFO L87 Difference]: Start difference. First operand 13376 states and 49119 transitions. Second operand has 32 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 18 states have internal predecessors, (101), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:56:14,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:56:14,661 INFO L93 Difference]: Finished difference Result 20225 states and 73221 transitions. [2024-11-07 19:56:14,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-07 19:56:14,662 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 18 states have internal predecessors, (101), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-07 19:56:14,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:56:14,913 INFO L225 Difference]: With dead ends: 20225 [2024-11-07 19:56:14,913 INFO L226 Difference]: Without dead ends: 20224 [2024-11-07 19:56:14,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=573, Invalid=1497, Unknown=0, NotChecked=0, Total=2070 [2024-11-07 19:56:14,943 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 459 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 19:56:14,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 472 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 19:56:14,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20224 states. [2024-11-07 19:56:18,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20224 to 19840. [2024-11-07 19:56:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19840 states, 13022 states have (on average 1.0495315619720473) internal successors, (13667), 13129 states have internal predecessors, (13667), 3917 states have call successors, (3917), 452 states have call predecessors, (3917), 2897 states have return successors, (53631), 6258 states have call predecessors, (53631), 3906 states have call successors, (53631) [2024-11-07 19:56:18,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19840 states to 19840 states and 71215 transitions. [2024-11-07 19:56:18,559 INFO L78 Accepts]: Start accepts. Automaton has 19840 states and 71215 transitions. Word has length 59 [2024-11-07 19:56:18,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:56:18,560 INFO L471 AbstractCegarLoop]: Abstraction has 19840 states and 71215 transitions. [2024-11-07 19:56:18,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 18 states have internal predecessors, (101), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:56:18,560 INFO L276 IsEmpty]: Start isEmpty. Operand 19840 states and 71215 transitions. [2024-11-07 19:56:18,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-07 19:56:18,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:56:18,563 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:56:18,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-07 19:56:18,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:56:18,768 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:56:18,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:56:18,768 INFO L85 PathProgramCache]: Analyzing trace with hash -295397423, now seen corresponding path program 2 times [2024-11-07 19:56:18,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:56:18,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171816183] [2024-11-07 19:56:18,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:56:18,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:56:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:18,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-07 19:56:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:18,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 19:56:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:18,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-07 19:56:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:18,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 19:56:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:19,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 19:56:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 86 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-07 19:56:19,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:56:19,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171816183] [2024-11-07 19:56:19,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171816183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:56:19,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886926548] [2024-11-07 19:56:19,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:56:19,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:56:19,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:56:19,053 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:56:19,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-07 19:56:19,265 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:56:19,265 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:56:19,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 19:56:19,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:56:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 75 proven. 22 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-07 19:56:19,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:56:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 94 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-07 19:56:20,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886926548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:56:20,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:56:20,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 32 [2024-11-07 19:56:20,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422410098] [2024-11-07 19:56:20,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:56:20,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-07 19:56:20,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:56:20,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-07 19:56:20,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2024-11-07 19:56:20,188 INFO L87 Difference]: Start difference. First operand 19840 states and 71215 transitions. Second operand has 33 states, 32 states have (on average 2.4375) internal successors, (78), 23 states have internal predecessors, (78), 7 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-07 19:56:23,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:56:23,000 INFO L93 Difference]: Finished difference Result 30265 states and 111648 transitions. [2024-11-07 19:56:23,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-07 19:56:23,001 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.4375) internal successors, (78), 23 states have internal predecessors, (78), 7 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) Word has length 80 [2024-11-07 19:56:23,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:56:23,082 INFO L225 Difference]: With dead ends: 30265 [2024-11-07 19:56:23,083 INFO L226 Difference]: Without dead ends: 12260 [2024-11-07 19:56:23,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2024-11-07 19:56:23,403 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 141 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 19:56:23,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 401 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 19:56:23,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12260 states. [2024-11-07 19:56:24,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12260 to 11692. [2024-11-07 19:56:24,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11692 states, 8105 states have (on average 1.073781616286243) internal successors, (8703), 8384 states have internal predecessors, (8703), 2284 states have call successors, (2284), 476 states have call predecessors, (2284), 1299 states have return successors, (7789), 2831 states have call predecessors, (7789), 2276 states have call successors, (7789) [2024-11-07 19:56:24,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11692 states to 11692 states and 18776 transitions. [2024-11-07 19:56:24,921 INFO L78 Accepts]: Start accepts. Automaton has 11692 states and 18776 transitions. Word has length 80 [2024-11-07 19:56:24,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:56:24,922 INFO L471 AbstractCegarLoop]: Abstraction has 11692 states and 18776 transitions. [2024-11-07 19:56:24,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.4375) internal successors, (78), 23 states have internal predecessors, (78), 7 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-07 19:56:24,922 INFO L276 IsEmpty]: Start isEmpty. Operand 11692 states and 18776 transitions. [2024-11-07 19:56:24,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-07 19:56:24,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:56:24,925 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 6, 6, 6, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:56:24,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-07 19:56:25,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:56:25,129 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:56:25,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:56:25,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1699922576, now seen corresponding path program 3 times [2024-11-07 19:56:25,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:56:25,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5359403] [2024-11-07 19:56:25,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:56:25,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:56:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:25,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 19:56:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:25,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 19:56:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:25,327 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 62 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:56:25,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:56:25,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5359403] [2024-11-07 19:56:25,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5359403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:56:25,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101776366] [2024-11-07 19:56:25,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 19:56:25,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:56:25,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:56:25,330 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:56:25,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-07 19:56:25,398 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-07 19:56:25,398 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:56:25,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-07 19:56:25,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:56:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 60 proven. 79 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:56:25,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:56:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 64 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:56:25,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101776366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:56:25,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:56:25,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-11-07 19:56:25,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934565670] [2024-11-07 19:56:25,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:56:25,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-07 19:56:25,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:56:25,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-07 19:56:25,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2024-11-07 19:56:25,837 INFO L87 Difference]: Start difference. First operand 11692 states and 18776 transitions. Second operand has 34 states, 33 states have (on average 3.121212121212121) internal successors, (103), 22 states have internal predecessors, (103), 11 states have call successors, (13), 11 states have call predecessors, (13), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-07 19:56:27,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:56:27,706 INFO L93 Difference]: Finished difference Result 12447 states and 19918 transitions. [2024-11-07 19:56:27,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-07 19:56:27,707 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.121212121212121) internal successors, (103), 22 states have internal predecessors, (103), 11 states have call successors, (13), 11 states have call predecessors, (13), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) Word has length 68 [2024-11-07 19:56:27,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:56:27,770 INFO L225 Difference]: With dead ends: 12447 [2024-11-07 19:56:27,770 INFO L226 Difference]: Without dead ends: 12446 [2024-11-07 19:56:27,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=499, Invalid=2051, Unknown=0, NotChecked=0, Total=2550 [2024-11-07 19:56:27,781 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 257 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 19:56:27,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 275 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 19:56:27,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12446 states. [2024-11-07 19:56:29,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12446 to 11800. [2024-11-07 19:56:29,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11800 states, 8177 states have (on average 1.0699523052464228) internal successors, (8749), 8456 states have internal predecessors, (8749), 2284 states have call successors, (2284), 476 states have call predecessors, (2284), 1335 states have return successors, (7883), 2867 states have call predecessors, (7883), 2276 states have call successors, (7883) [2024-11-07 19:56:29,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11800 states to 11800 states and 18916 transitions. [2024-11-07 19:56:29,230 INFO L78 Accepts]: Start accepts. Automaton has 11800 states and 18916 transitions. Word has length 68 [2024-11-07 19:56:29,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:56:29,230 INFO L471 AbstractCegarLoop]: Abstraction has 11800 states and 18916 transitions. [2024-11-07 19:56:29,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.121212121212121) internal successors, (103), 22 states have internal predecessors, (103), 11 states have call successors, (13), 11 states have call predecessors, (13), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-07 19:56:29,230 INFO L276 IsEmpty]: Start isEmpty. Operand 11800 states and 18916 transitions. [2024-11-07 19:56:29,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-07 19:56:29,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:56:29,234 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 19:56:29,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-07 19:56:29,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:56:29,437 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:56:29,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:56:29,438 INFO L85 PathProgramCache]: Analyzing trace with hash -444123128, now seen corresponding path program 2 times [2024-11-07 19:56:29,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:56:29,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398043085] [2024-11-07 19:56:29,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:56:29,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:56:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:29,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 19:56:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:29,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 19:56:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:29,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-07 19:56:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:29,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-07 19:56:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:29,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 19:56:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:29,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 19:56:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:29,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-07 19:56:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:29,623 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 83 proven. 28 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-07 19:56:29,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:56:29,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398043085] [2024-11-07 19:56:29,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398043085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:56:29,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55603564] [2024-11-07 19:56:29,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:56:29,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:56:29,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:56:29,625 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:56:29,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-07 19:56:29,701 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:56:29,701 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:56:29,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 19:56:29,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:56:29,754 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 85 proven. 15 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-07 19:56:29,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:56:30,005 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 85 proven. 26 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-07 19:56:30,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55603564] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:56:30,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:56:30,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 8] total 14 [2024-11-07 19:56:30,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367260734] [2024-11-07 19:56:30,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:56:30,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 19:56:30,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:56:30,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 19:56:30,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-07 19:56:30,007 INFO L87 Difference]: Start difference. First operand 11800 states and 18916 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 12 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 11 states have call successors, (14) [2024-11-07 19:56:31,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:56:31,424 INFO L93 Difference]: Finished difference Result 22584 states and 40813 transitions. [2024-11-07 19:56:31,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:56:31,425 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 12 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 11 states have call successors, (14) Word has length 81 [2024-11-07 19:56:31,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:56:31,481 INFO L225 Difference]: With dead ends: 22584 [2024-11-07 19:56:31,481 INFO L226 Difference]: Without dead ends: 12984 [2024-11-07 19:56:31,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 167 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2024-11-07 19:56:31,546 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 21 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 19:56:31,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 100 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 19:56:31,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12984 states. [2024-11-07 19:56:32,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12984 to 11794. [2024-11-07 19:56:32,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11794 states, 8174 states have (on average 1.0699779789576707) internal successors, (8746), 8453 states have internal predecessors, (8746), 2281 states have call successors, (2281), 476 states have call predecessors, (2281), 1335 states have return successors, (7803), 2864 states have call predecessors, (7803), 2246 states have call successors, (7803) [2024-11-07 19:56:32,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11794 states to 11794 states and 18830 transitions. [2024-11-07 19:56:32,851 INFO L78 Accepts]: Start accepts. Automaton has 11794 states and 18830 transitions. Word has length 81 [2024-11-07 19:56:32,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:56:32,852 INFO L471 AbstractCegarLoop]: Abstraction has 11794 states and 18830 transitions. [2024-11-07 19:56:32,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 12 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 11 states have call successors, (14) [2024-11-07 19:56:32,852 INFO L276 IsEmpty]: Start isEmpty. Operand 11794 states and 18830 transitions. [2024-11-07 19:56:32,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-07 19:56:32,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:56:32,856 INFO L215 NwaCegarLoop]: trace histogram [11, 9, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 19:56:32,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-07 19:56:33,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:56:33,057 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:56:33,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:56:33,057 INFO L85 PathProgramCache]: Analyzing trace with hash -394691490, now seen corresponding path program 3 times [2024-11-07 19:56:33,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:56:33,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062919400] [2024-11-07 19:56:33,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:56:33,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:56:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:33,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 19:56:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:33,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-07 19:56:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:33,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-07 19:56:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:33,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 19:56:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:33,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-07 19:56:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:33,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 19:56:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:33,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 19:56:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:33,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-07 19:56:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:33,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-07 19:56:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:33,367 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 117 proven. 51 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-07 19:56:33,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:56:33,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062919400] [2024-11-07 19:56:33,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062919400] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:56:33,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724541969] [2024-11-07 19:56:33,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 19:56:33,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:56:33,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:56:33,370 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:56:33,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-07 19:56:33,445 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-07 19:56:33,445 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:56:33,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 19:56:33,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:56:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 153 proven. 26 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-07 19:56:33,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:56:34,131 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 123 proven. 57 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-07 19:56:34,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724541969] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:56:34,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:56:34,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 17 [2024-11-07 19:56:34,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612538354] [2024-11-07 19:56:34,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:56:34,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 19:56:34,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:56:34,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 19:56:34,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-07 19:56:34,133 INFO L87 Difference]: Start difference. First operand 11794 states and 18830 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (17), 5 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-07 19:56:35,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:56:35,936 INFO L93 Difference]: Finished difference Result 24299 states and 49196 transitions. [2024-11-07 19:56:35,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 19:56:35,936 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (17), 5 states have call predecessors, (17), 9 states have call successors, (17) Word has length 100 [2024-11-07 19:56:35,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:56:36,009 INFO L225 Difference]: With dead ends: 24299 [2024-11-07 19:56:36,009 INFO L226 Difference]: Without dead ends: 14733 [2024-11-07 19:56:36,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 207 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-11-07 19:56:36,094 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 51 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 19:56:36,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 164 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 19:56:36,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14733 states. [2024-11-07 19:56:37,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14733 to 14372. [2024-11-07 19:56:37,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14372 states, 9692 states have (on average 1.0522080066033843) internal successors, (10198), 9951 states have internal predecessors, (10198), 2881 states have call successors, (2881), 496 states have call predecessors, (2881), 1795 states have return successors, (9707), 3924 states have call predecessors, (9707), 2826 states have call successors, (9707) [2024-11-07 19:56:37,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14372 states to 14372 states and 22786 transitions. [2024-11-07 19:56:37,991 INFO L78 Accepts]: Start accepts. Automaton has 14372 states and 22786 transitions. Word has length 100 [2024-11-07 19:56:37,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:56:37,992 INFO L471 AbstractCegarLoop]: Abstraction has 14372 states and 22786 transitions. [2024-11-07 19:56:37,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (17), 5 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-07 19:56:37,992 INFO L276 IsEmpty]: Start isEmpty. Operand 14372 states and 22786 transitions. [2024-11-07 19:56:37,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-07 19:56:37,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:56:37,997 INFO L215 NwaCegarLoop]: trace histogram [10, 8, 7, 7, 7, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:56:38,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-07 19:56:38,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:56:38,197 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:56:38,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:56:38,198 INFO L85 PathProgramCache]: Analyzing trace with hash 39455528, now seen corresponding path program 3 times [2024-11-07 19:56:38,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:56:38,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079260751] [2024-11-07 19:56:38,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:56:38,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:56:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:38,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 19:56:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:38,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-07 19:56:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:38,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 19:56:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:38,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 19:56:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 120 proven. 86 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-07 19:56:38,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:56:38,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079260751] [2024-11-07 19:56:38,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079260751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:56:38,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899767654] [2024-11-07 19:56:38,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 19:56:38,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:56:38,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:56:38,520 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:56:38,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-07 19:56:38,606 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-07 19:56:38,607 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:56:38,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-07 19:56:38,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:56:38,743 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 113 proven. 41 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-07 19:56:38,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:56:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 142 proven. 13 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-07 19:56:38,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899767654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:56:38,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:56:38,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 7, 8] total 29 [2024-11-07 19:56:38,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135372338] [2024-11-07 19:56:38,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:56:38,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-07 19:56:38,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:56:38,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-07 19:56:38,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2024-11-07 19:56:38,904 INFO L87 Difference]: Start difference. First operand 14372 states and 22786 transitions. Second operand has 29 states, 29 states have (on average 3.6551724137931036) internal successors, (106), 22 states have internal predecessors, (106), 11 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (10), 9 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-07 19:56:41,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:56:41,460 INFO L93 Difference]: Finished difference Result 25330 states and 43230 transitions. [2024-11-07 19:56:41,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-07 19:56:41,461 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.6551724137931036) internal successors, (106), 22 states have internal predecessors, (106), 11 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (10), 9 states have call predecessors, (10), 4 states have call successors, (10) Word has length 87 [2024-11-07 19:56:41,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:56:41,529 INFO L225 Difference]: With dead ends: 25330 [2024-11-07 19:56:41,530 INFO L226 Difference]: Without dead ends: 13103 [2024-11-07 19:56:41,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=990, Invalid=3980, Unknown=0, NotChecked=0, Total=4970 [2024-11-07 19:56:41,596 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 187 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 19:56:41,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 166 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 19:56:41,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13103 states. [2024-11-07 19:56:43,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13103 to 11143. [2024-11-07 19:56:43,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11143 states, 7586 states have (on average 1.0460058001581862) internal successors, (7935), 7834 states have internal predecessors, (7935), 2175 states have call successors, (2175), 424 states have call predecessors, (2175), 1378 states have return successors, (5289), 2884 states have call predecessors, (5289), 2141 states have call successors, (5289) [2024-11-07 19:56:43,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11143 states to 11143 states and 15399 transitions. [2024-11-07 19:56:43,179 INFO L78 Accepts]: Start accepts. Automaton has 11143 states and 15399 transitions. Word has length 87 [2024-11-07 19:56:43,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:56:43,180 INFO L471 AbstractCegarLoop]: Abstraction has 11143 states and 15399 transitions. [2024-11-07 19:56:43,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.6551724137931036) internal successors, (106), 22 states have internal predecessors, (106), 11 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (10), 9 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-07 19:56:43,180 INFO L276 IsEmpty]: Start isEmpty. Operand 11143 states and 15399 transitions. [2024-11-07 19:56:43,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-07 19:56:43,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:56:43,183 INFO L215 NwaCegarLoop]: trace histogram [10, 8, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:56:43,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-07 19:56:43,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:56:43,384 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:56:43,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:56:43,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1846631051, now seen corresponding path program 4 times [2024-11-07 19:56:43,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:56:43,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469183503] [2024-11-07 19:56:43,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:56:43,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:56:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:43,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 19:56:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:43,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-07 19:56:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:43,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-07 19:56:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:43,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-07 19:56:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:43,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 19:56:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:43,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 19:56:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:43,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-07 19:56:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:43,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-07 19:56:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:43,782 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 51 proven. 69 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-07 19:56:43,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:56:43,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469183503] [2024-11-07 19:56:43,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469183503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:56:43,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660216993] [2024-11-07 19:56:43,783 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 19:56:43,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:56:43,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:56:43,785 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:56:43,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-07 19:56:43,871 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 19:56:43,871 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:56:43,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-07 19:56:43,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:56:43,949 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 34 proven. 71 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-07 19:56:43,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:56:45,510 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 42 proven. 93 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-07 19:56:45,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660216993] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:56:45,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:56:45,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 23] total 42 [2024-11-07 19:56:45,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011940065] [2024-11-07 19:56:45,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:56:45,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-07 19:56:45,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:56:45,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-07 19:56:45,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1599, Unknown=0, NotChecked=0, Total=1806 [2024-11-07 19:56:45,512 INFO L87 Difference]: Start difference. First operand 11143 states and 15399 transitions. Second operand has 43 states, 42 states have (on average 1.9047619047619047) internal successors, (80), 33 states have internal predecessors, (80), 9 states have call successors, (11), 3 states have call predecessors, (11), 14 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-07 19:56:51,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 19:56:51,472 INFO L93 Difference]: Finished difference Result 34681 states and 55092 transitions. [2024-11-07 19:56:51,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2024-11-07 19:56:51,472 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.9047619047619047) internal successors, (80), 33 states have internal predecessors, (80), 9 states have call successors, (11), 3 states have call predecessors, (11), 14 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) Word has length 91 [2024-11-07 19:56:51,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 19:56:51,608 INFO L225 Difference]: With dead ends: 34681 [2024-11-07 19:56:51,608 INFO L226 Difference]: Without dead ends: 33579 [2024-11-07 19:56:51,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12275 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5342, Invalid=27238, Unknown=0, NotChecked=0, Total=32580 [2024-11-07 19:56:51,631 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 256 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 19:56:51,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 383 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 19:56:51,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33579 states. [2024-11-07 19:56:54,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33579 to 21093. [2024-11-07 19:56:54,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21093 states, 13678 states have (on average 1.0274162889311302) internal successors, (14053), 13909 states have internal predecessors, (14053), 4366 states have call successors, (4366), 532 states have call predecessors, (4366), 3045 states have return successors, (14390), 6651 states have call predecessors, (14390), 4312 states have call successors, (14390) [2024-11-07 19:56:54,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21093 states to 21093 states and 32809 transitions. [2024-11-07 19:56:54,826 INFO L78 Accepts]: Start accepts. Automaton has 21093 states and 32809 transitions. Word has length 91 [2024-11-07 19:56:54,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 19:56:54,826 INFO L471 AbstractCegarLoop]: Abstraction has 21093 states and 32809 transitions. [2024-11-07 19:56:54,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.9047619047619047) internal successors, (80), 33 states have internal predecessors, (80), 9 states have call successors, (11), 3 states have call predecessors, (11), 14 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-07 19:56:54,826 INFO L276 IsEmpty]: Start isEmpty. Operand 21093 states and 32809 transitions. [2024-11-07 19:56:54,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-07 19:56:54,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 19:56:54,831 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2024-11-07 19:56:54,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-07 19:56:55,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-07 19:56:55,032 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-07 19:56:55,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:56:55,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1754739570, now seen corresponding path program 3 times [2024-11-07 19:56:55,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:56:55,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792225122] [2024-11-07 19:56:55,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:56:55,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:56:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:56:55,505 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:56:55,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:56:55,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792225122] [2024-11-07 19:56:55,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792225122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:56:55,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959436601] [2024-11-07 19:56:55,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 19:56:55,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:56:55,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:56:55,507 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:56:55,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-07 19:56:55,604 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-07 19:56:55,604 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:56:55,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-07 19:56:55,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:56:55,718 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:56:55,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:56:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:56:56,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959436601] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:56:56,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:56:56,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2024-11-07 19:56:56,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251703530] [2024-11-07 19:56:56,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:56:56,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-07 19:56:56,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:56:56,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-07 19:56:56,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=996, Invalid=3036, Unknown=0, NotChecked=0, Total=4032 [2024-11-07 19:56:56,463 INFO L87 Difference]: Start difference. First operand 21093 states and 32809 transitions. Second operand has 64 states, 61 states have (on average 3.4918032786885247) internal successors, (213), 34 states have internal predecessors, (213), 30 states have call successors, (30), 30 states have call predecessors, (30), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)