./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/hardware-verification-bv/btor2c-lazyMod.recount4.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '64bit', '--witnessprinter.graph.data.programhash', 'd1f3c30f17cc68a40d1b0b31634de48071c9ae3c0808bd553c6c6ce86d938069'] 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/hardware-verification-bv/btor2c-lazyMod.recount4.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d1f3c30f17cc68a40d1b0b31634de48071c9ae3c0808bd553c6c6ce86d938069 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 03:30:47,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 03:30:47,529 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-07 03:30:47,538 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 03:30:47,539 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 03:30:47,575 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 03:30:47,581 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 03:30:47,581 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 03:30:47,581 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 03:30:47,581 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 03:30:47,581 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 03:30:47,581 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 03:30:47,582 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 03:30:47,582 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 03:30:47,582 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 03:30:47,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 03:30:47,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 03:30:47,582 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 03:30:47,582 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 03:30:47,582 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 03:30:47,582 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 03:30:47,582 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 03:30:47,582 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 03:30:47,582 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 03:30:47,582 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 03:30:47,582 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 03:30:47,582 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 03:30:47,583 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 03:30:47,583 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 03:30:47,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 03:30:47,583 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 03:30:47,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 03:30:47,583 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 03:30:47,583 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 03:30:47,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 03:30:47,583 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 03:30:47,583 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 03:30:47,583 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 03:30:47,583 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 03:30:47,583 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 ! call(reach_error())) ) 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 -> d1f3c30f17cc68a40d1b0b31634de48071c9ae3c0808bd553c6c6ce86d938069 [2024-11-07 03:30:47,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 03:30:47,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 03:30:47,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 03:30:47,898 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 03:30:47,898 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 03:30:47,899 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c [2024-11-07 03:30:49,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 03:30:49,403 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 03:30:49,404 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c [2024-11-07 03:30:49,410 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a0902af79/9f758f259b8c42ed953e9161e1dec999/FLAG90ba9f652 [2024-11-07 03:30:49,741 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a0902af79/9f758f259b8c42ed953e9161e1dec999 [2024-11-07 03:30:49,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 03:30:49,751 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 03:30:49,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 03:30:49,753 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 03:30:49,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 03:30:49,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:30:49" (1/1) ... [2024-11-07 03:30:49,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3194df11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:30:49, skipping insertion in model container [2024-11-07 03:30:49,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:30:49" (1/1) ... [2024-11-07 03:30:49,770 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 03:30:49,873 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c[1258,1271] [2024-11-07 03:30:49,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 03:30:49,899 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 03:30:49,907 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c[1258,1271] [2024-11-07 03:30:49,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 03:30:49,928 INFO L204 MainTranslator]: Completed translation [2024-11-07 03:30:49,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:30:49 WrapperNode [2024-11-07 03:30:49,928 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 03:30:49,929 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 03:30:49,929 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 03:30:49,929 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 03:30:49,934 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:30:49" (1/1) ... [2024-11-07 03:30:49,940 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:30:49" (1/1) ... [2024-11-07 03:30:49,960 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2024-11-07 03:30:49,960 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 03:30:49,961 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 03:30:49,961 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 03:30:49,961 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 03:30:49,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:30:49" (1/1) ... [2024-11-07 03:30:49,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:30:49" (1/1) ... [2024-11-07 03:30:49,970 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:30:49" (1/1) ... [2024-11-07 03:30:49,985 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 03:30:49,985 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:30:49" (1/1) ... [2024-11-07 03:30:49,985 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:30:49" (1/1) ... [2024-11-07 03:30:49,991 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:30:49" (1/1) ... [2024-11-07 03:30:49,998 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:30:49" (1/1) ... [2024-11-07 03:30:50,003 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:30:49" (1/1) ... [2024-11-07 03:30:50,004 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:30:49" (1/1) ... [2024-11-07 03:30:50,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 03:30:50,011 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 03:30:50,011 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 03:30:50,011 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 03:30:50,012 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:30:49" (1/1) ... [2024-11-07 03:30:50,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 03:30:50,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 03:30:50,047 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 03:30:50,052 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 03:30:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 03:30:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 03:30:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 03:30:50,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 03:30:50,129 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 03:30:50,131 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 03:30:50,344 INFO L? ?]: Removed 40 outVars from TransFormulas that were not future-live. [2024-11-07 03:30:50,344 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 03:30:50,355 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 03:30:50,356 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-07 03:30:50,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:30:50 BoogieIcfgContainer [2024-11-07 03:30:50,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 03:30:50,359 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 03:30:50,359 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 03:30:50,363 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 03:30:50,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:30:49" (1/3) ... [2024-11-07 03:30:50,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16371b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:30:50, skipping insertion in model container [2024-11-07 03:30:50,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:30:49" (2/3) ... [2024-11-07 03:30:50,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16371b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:30:50, skipping insertion in model container [2024-11-07 03:30:50,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:30:50" (3/3) ... [2024-11-07 03:30:50,366 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.recount4.c [2024-11-07 03:30:50,378 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 03:30:50,378 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 03:30:50,416 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 03:30:50,431 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;@5bf94870, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 03:30:50,431 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-07 03:30:50,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:50,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-07 03:30:50,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 03:30:50,439 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 03:30:50,440 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 03:30:50,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 03:30:50,444 INFO L85 PathProgramCache]: Analyzing trace with hash 4251452, now seen corresponding path program 1 times [2024-11-07 03:30:50,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 03:30:50,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867965989] [2024-11-07 03:30:50,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 03:30:50,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 03:30:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 03:30:51,071 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 03:30:51,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 03:30:51,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867965989] [2024-11-07 03:30:51,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867965989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 03:30:51,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 03:30:51,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 03:30:51,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157037532] [2024-11-07 03:30:51,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 03:30:51,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 03:30:51,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 03:30:51,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 03:30:51,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 03:30:51,089 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:51,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 03:30:51,196 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2024-11-07 03:30:51,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 03:30:51,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-07 03:30:51,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 03:30:51,202 INFO L225 Difference]: With dead ends: 54 [2024-11-07 03:30:51,202 INFO L226 Difference]: Without dead ends: 34 [2024-11-07 03:30:51,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-07 03:30:51,208 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 97 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 03:30:51,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 50 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 03:30:51,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-07 03:30:51,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-11-07 03:30:51,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.40625) internal successors, (45), 32 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2024-11-07 03:30:51,234 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 11 [2024-11-07 03:30:51,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 03:30:51,234 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 45 transitions. [2024-11-07 03:30:51,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:51,235 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2024-11-07 03:30:51,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-07 03:30:51,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 03:30:51,236 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 03:30:51,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 03:30:51,237 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 03:30:51,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 03:30:51,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1949095075, now seen corresponding path program 1 times [2024-11-07 03:30:51,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 03:30:51,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706812664] [2024-11-07 03:30:51,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 03:30:51,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 03:30:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 03:30:51,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 03:30:51,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 03:30:51,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706812664] [2024-11-07 03:30:51,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706812664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 03:30:51,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567613360] [2024-11-07 03:30:51,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 03:30:51,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 03:30:51,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 03:30:51,612 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 03:30:51,614 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 03:30:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 03:30:51,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-07 03:30:51,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 03:30:51,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 03:30:51,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 03:30:52,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 03:30:52,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567613360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 03:30:52,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 03:30:52,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 14 [2024-11-07 03:30:52,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987769565] [2024-11-07 03:30:52,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 03:30:52,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 03:30:52,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 03:30:52,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 03:30:52,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-07 03:30:52,129 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:52,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 03:30:52,323 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2024-11-07 03:30:52,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 03:30:52,323 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-07 03:30:52,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 03:30:52,324 INFO L225 Difference]: With dead ends: 47 [2024-11-07 03:30:52,324 INFO L226 Difference]: Without dead ends: 45 [2024-11-07 03:30:52,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-11-07 03:30:52,326 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 71 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 03:30:52,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 164 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 03:30:52,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-07 03:30:52,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2024-11-07 03:30:52,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.393939393939394) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:52,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2024-11-07 03:30:52,330 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 46 transitions. Word has length 20 [2024-11-07 03:30:52,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 03:30:52,330 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 46 transitions. [2024-11-07 03:30:52,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:52,330 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2024-11-07 03:30:52,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-07 03:30:52,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 03:30:52,331 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 03:30:52,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 03:30:52,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 03:30:52,535 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 03:30:52,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 03:30:52,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1188169764, now seen corresponding path program 1 times [2024-11-07 03:30:52,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 03:30:52,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482540773] [2024-11-07 03:30:52,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 03:30:52,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 03:30:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 03:30:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 03:30:52,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 03:30:52,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482540773] [2024-11-07 03:30:52,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482540773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 03:30:52,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 03:30:52,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 03:30:52,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15053429] [2024-11-07 03:30:52,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 03:30:52,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 03:30:52,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 03:30:52,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 03:30:52,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-07 03:30:52,909 INFO L87 Difference]: Start difference. First operand 34 states and 46 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:53,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 03:30:53,069 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2024-11-07 03:30:53,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 03:30:53,069 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-07 03:30:53,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 03:30:53,070 INFO L225 Difference]: With dead ends: 84 [2024-11-07 03:30:53,070 INFO L226 Difference]: Without dead ends: 56 [2024-11-07 03:30:53,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-07 03:30:53,071 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 74 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 03:30:53,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 74 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 03:30:53,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-07 03:30:53,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 44. [2024-11-07 03:30:53,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.372093023255814) internal successors, (59), 43 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:53,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 59 transitions. [2024-11-07 03:30:53,075 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 59 transitions. Word has length 21 [2024-11-07 03:30:53,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 03:30:53,075 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 59 transitions. [2024-11-07 03:30:53,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:53,075 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2024-11-07 03:30:53,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-07 03:30:53,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 03:30:53,076 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 03:30:53,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 03:30:53,076 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 03:30:53,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 03:30:53,076 INFO L85 PathProgramCache]: Analyzing trace with hash -256943541, now seen corresponding path program 1 times [2024-11-07 03:30:53,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 03:30:53,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865508418] [2024-11-07 03:30:53,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 03:30:53,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 03:30:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 03:30:53,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 03:30:53,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 03:30:53,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865508418] [2024-11-07 03:30:53,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865508418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 03:30:53,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 03:30:53,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 03:30:53,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702543797] [2024-11-07 03:30:53,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 03:30:53,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 03:30:53,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 03:30:53,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 03:30:53,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-07 03:30:53,527 INFO L87 Difference]: Start difference. First operand 44 states and 59 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:53,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 03:30:53,733 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2024-11-07 03:30:53,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 03:30:53,734 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-07 03:30:53,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 03:30:53,735 INFO L225 Difference]: With dead ends: 94 [2024-11-07 03:30:53,735 INFO L226 Difference]: Without dead ends: 66 [2024-11-07 03:30:53,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-07 03:30:53,735 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 71 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 03:30:53,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 91 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 03:30:53,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-07 03:30:53,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 55. [2024-11-07 03:30:53,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 54 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:53,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 74 transitions. [2024-11-07 03:30:53,744 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 74 transitions. Word has length 22 [2024-11-07 03:30:53,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 03:30:53,744 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 74 transitions. [2024-11-07 03:30:53,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:53,745 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 74 transitions. [2024-11-07 03:30:53,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-07 03:30:53,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 03:30:53,746 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 03:30:53,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 03:30:53,746 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 03:30:53,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 03:30:53,746 INFO L85 PathProgramCache]: Analyzing trace with hash 393053311, now seen corresponding path program 1 times [2024-11-07 03:30:53,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 03:30:53,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930692116] [2024-11-07 03:30:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 03:30:53,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 03:30:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 03:30:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 03:30:54,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 03:30:54,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930692116] [2024-11-07 03:30:54,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930692116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 03:30:54,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289728179] [2024-11-07 03:30:54,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 03:30:54,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 03:30:54,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 03:30:54,281 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 03:30:54,288 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 03:30:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 03:30:54,359 WARN L253 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-07 03:30:54,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 03:30:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 03:30:54,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 03:30:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 03:30:57,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289728179] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 03:30:57,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 03:30:57,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 36 [2024-11-07 03:30:57,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560475053] [2024-11-07 03:30:57,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 03:30:57,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-07 03:30:57,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 03:30:57,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-07 03:30:57,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1081, Unknown=0, NotChecked=0, Total=1260 [2024-11-07 03:30:57,049 INFO L87 Difference]: Start difference. First operand 55 states and 74 transitions. Second operand has 36 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 36 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:57,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 03:30:57,976 INFO L93 Difference]: Finished difference Result 135 states and 184 transitions. [2024-11-07 03:30:57,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-07 03:30:57,976 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 36 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-07 03:30:57,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 03:30:57,977 INFO L225 Difference]: With dead ends: 135 [2024-11-07 03:30:57,977 INFO L226 Difference]: Without dead ends: 107 [2024-11-07 03:30:57,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=511, Invalid=2569, Unknown=0, NotChecked=0, Total=3080 [2024-11-07 03:30:57,981 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 195 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 03:30:57,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 67 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 03:30:57,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-07 03:30:57,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 77. [2024-11-07 03:30:57,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.3421052631578947) internal successors, (102), 76 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:57,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 102 transitions. [2024-11-07 03:30:57,993 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 102 transitions. Word has length 23 [2024-11-07 03:30:57,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 03:30:57,993 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 102 transitions. [2024-11-07 03:30:57,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 36 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:57,993 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 102 transitions. [2024-11-07 03:30:57,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-07 03:30:57,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 03:30:57,994 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 03:30:58,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-07 03:30:58,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 03:30:58,195 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 03:30:58,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 03:30:58,196 INFO L85 PathProgramCache]: Analyzing trace with hash 23123751, now seen corresponding path program 1 times [2024-11-07 03:30:58,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 03:30:58,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297086988] [2024-11-07 03:30:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 03:30:58,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 03:30:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 03:30:58,518 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 03:30:58,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 03:30:58,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297086988] [2024-11-07 03:30:58,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297086988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 03:30:58,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 03:30:58,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 03:30:58,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369373787] [2024-11-07 03:30:58,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 03:30:58,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 03:30:58,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 03:30:58,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 03:30:58,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-07 03:30:58,522 INFO L87 Difference]: Start difference. First operand 77 states and 102 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:58,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 03:30:58,588 INFO L93 Difference]: Finished difference Result 143 states and 190 transitions. [2024-11-07 03:30:58,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 03:30:58,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-07 03:30:58,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 03:30:58,589 INFO L225 Difference]: With dead ends: 143 [2024-11-07 03:30:58,590 INFO L226 Difference]: Without dead ends: 100 [2024-11-07 03:30:58,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-07 03:30:58,591 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 24 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 03:30:58,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 198 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 03:30:58,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-07 03:30:58,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2024-11-07 03:30:58,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.345679012345679) internal successors, (109), 81 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:58,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 109 transitions. [2024-11-07 03:30:58,599 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 109 transitions. Word has length 41 [2024-11-07 03:30:58,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 03:30:58,600 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 109 transitions. [2024-11-07 03:30:58,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:58,600 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 109 transitions. [2024-11-07 03:30:58,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-07 03:30:58,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 03:30:58,602 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 03:30:58,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 03:30:58,602 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 03:30:58,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 03:30:58,602 INFO L85 PathProgramCache]: Analyzing trace with hash -998409867, now seen corresponding path program 1 times [2024-11-07 03:30:58,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 03:30:58,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016288462] [2024-11-07 03:30:58,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 03:30:58,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 03:30:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 03:30:58,821 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 03:30:58,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 03:30:58,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016288462] [2024-11-07 03:30:58,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016288462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 03:30:58,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309994912] [2024-11-07 03:30:58,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 03:30:58,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 03:30:58,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 03:30:58,827 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 03:30:58,828 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 03:30:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 03:30:58,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 03:30:58,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 03:30:59,018 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 03:30:59,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 03:30:59,146 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 03:30:59,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309994912] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 03:30:59,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 03:30:59,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2024-11-07 03:30:59,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108521989] [2024-11-07 03:30:59,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 03:30:59,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 03:30:59,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 03:30:59,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 03:30:59,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-07 03:30:59,148 INFO L87 Difference]: Start difference. First operand 82 states and 109 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:59,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 03:30:59,263 INFO L93 Difference]: Finished difference Result 156 states and 203 transitions. [2024-11-07 03:30:59,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 03:30:59,264 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-07 03:30:59,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 03:30:59,264 INFO L225 Difference]: With dead ends: 156 [2024-11-07 03:30:59,264 INFO L226 Difference]: Without dead ends: 102 [2024-11-07 03:30:59,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2024-11-07 03:30:59,269 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 36 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 03:30:59,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 124 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 03:30:59,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-07 03:30:59,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 84. [2024-11-07 03:30:59,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.3493975903614457) internal successors, (112), 83 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:59,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 112 transitions. [2024-11-07 03:30:59,278 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 112 transitions. Word has length 42 [2024-11-07 03:30:59,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 03:30:59,279 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 112 transitions. [2024-11-07 03:30:59,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:30:59,279 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 112 transitions. [2024-11-07 03:30:59,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-07 03:30:59,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 03:30:59,279 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 03:30:59,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 03:30:59,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 03:30:59,481 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 03:30:59,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 03:30:59,481 INFO L85 PathProgramCache]: Analyzing trace with hash -379972658, now seen corresponding path program 1 times [2024-11-07 03:30:59,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 03:30:59,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294625881] [2024-11-07 03:30:59,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 03:30:59,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 03:30:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 03:31:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 27 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 03:31:00,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 03:31:00,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294625881] [2024-11-07 03:31:00,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294625881] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 03:31:00,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194050863] [2024-11-07 03:31:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 03:31:00,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 03:31:00,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 03:31:00,325 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 03:31:00,326 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 03:31:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 03:31:00,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-07 03:31:00,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 03:31:00,773 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 25 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 03:31:00,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 03:31:01,353 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 03:31:01,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194050863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 03:31:01,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 03:31:01,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 32 [2024-11-07 03:31:01,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537250084] [2024-11-07 03:31:01,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 03:31:01,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 03:31:01,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 03:31:01,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 03:31:01,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=852, Unknown=0, NotChecked=0, Total=992 [2024-11-07 03:31:01,356 INFO L87 Difference]: Start difference. First operand 84 states and 112 transitions. Second operand has 32 states, 32 states have (on average 3.28125) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:31:02,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 03:31:02,147 INFO L93 Difference]: Finished difference Result 252 states and 327 transitions. [2024-11-07 03:31:02,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-07 03:31:02,150 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.28125) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-07 03:31:02,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 03:31:02,151 INFO L225 Difference]: With dead ends: 252 [2024-11-07 03:31:02,151 INFO L226 Difference]: Without dead ends: 201 [2024-11-07 03:31:02,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=649, Invalid=2773, Unknown=0, NotChecked=0, Total=3422 [2024-11-07 03:31:02,157 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 248 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 03:31:02,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 67 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 03:31:02,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-07 03:31:02,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 103. [2024-11-07 03:31:02,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.3529411764705883) internal successors, (138), 102 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:31:02,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 138 transitions. [2024-11-07 03:31:02,166 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 138 transitions. Word has length 42 [2024-11-07 03:31:02,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 03:31:02,166 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 138 transitions. [2024-11-07 03:31:02,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.28125) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:31:02,166 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 138 transitions. [2024-11-07 03:31:02,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-07 03:31:02,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 03:31:02,171 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 03:31:02,188 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 03:31:02,372 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,SelfDestructingSolverStorable7 [2024-11-07 03:31:02,372 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 03:31:02,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 03:31:02,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1624718367, now seen corresponding path program 2 times [2024-11-07 03:31:02,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 03:31:02,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882071023] [2024-11-07 03:31:02,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 03:31:02,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 03:31:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 03:31:03,266 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 35 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 03:31:03,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 03:31:03,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882071023] [2024-11-07 03:31:03,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882071023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 03:31:03,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983103987] [2024-11-07 03:31:03,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 03:31:03,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 03:31:03,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 03:31:03,269 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 03:31:03,270 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 03:31:03,356 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 03:31:03,356 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 03:31:03,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-07 03:31:03,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 03:31:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 29 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 03:31:03,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 03:31:08,037 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 03:31:08,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983103987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 03:31:08,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 03:31:08,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 17] total 48 [2024-11-07 03:31:08,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158427876] [2024-11-07 03:31:08,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 03:31:08,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-07 03:31:08,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 03:31:08,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-07 03:31:08,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1979, Unknown=0, NotChecked=0, Total=2256 [2024-11-07 03:31:08,039 INFO L87 Difference]: Start difference. First operand 103 states and 138 transitions. Second operand has 48 states, 48 states have (on average 2.3125) internal successors, (111), 48 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:31:09,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 03:31:09,709 INFO L93 Difference]: Finished difference Result 360 states and 472 transitions. [2024-11-07 03:31:09,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-07 03:31:09,710 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.3125) internal successors, (111), 48 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-07 03:31:09,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 03:31:09,711 INFO L225 Difference]: With dead ends: 360 [2024-11-07 03:31:09,712 INFO L226 Difference]: Without dead ends: 290 [2024-11-07 03:31:09,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2068 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=828, Invalid=5024, Unknown=0, NotChecked=0, Total=5852 [2024-11-07 03:31:09,716 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 290 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-07 03:31:09,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 88 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-07 03:31:09,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-07 03:31:09,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 183. [2024-11-07 03:31:09,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.3516483516483517) internal successors, (246), 182 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:31:09,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 246 transitions. [2024-11-07 03:31:09,726 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 246 transitions. Word has length 43 [2024-11-07 03:31:09,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 03:31:09,726 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 246 transitions. [2024-11-07 03:31:09,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.3125) internal successors, (111), 48 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:31:09,726 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 246 transitions. [2024-11-07 03:31:09,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-07 03:31:09,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 03:31:09,727 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 03:31:09,744 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 03:31:09,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 03:31:09,927 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 03:31:09,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 03:31:09,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1338323453, now seen corresponding path program 1 times [2024-11-07 03:31:09,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 03:31:09,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179017895] [2024-11-07 03:31:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 03:31:09,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 03:31:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 03:31:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 38 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 03:31:10,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 03:31:10,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179017895] [2024-11-07 03:31:10,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179017895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 03:31:10,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709109252] [2024-11-07 03:31:10,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 03:31:10,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 03:31:10,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 03:31:10,855 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 03:31:10,856 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 03:31:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 03:31:10,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-07 03:31:10,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 03:31:11,604 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 39 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 03:31:11,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 03:31:13,515 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 03:31:13,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709109252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 03:31:13,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 03:31:13,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 16] total 47 [2024-11-07 03:31:13,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367724152] [2024-11-07 03:31:13,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 03:31:13,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-07 03:31:13,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 03:31:13,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-07 03:31:13,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1835, Unknown=0, NotChecked=0, Total=2162 [2024-11-07 03:31:13,517 INFO L87 Difference]: Start difference. First operand 183 states and 246 transitions. Second operand has 47 states, 47 states have (on average 2.617021276595745) internal successors, (123), 47 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:31:15,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 03:31:15,245 INFO L93 Difference]: Finished difference Result 391 states and 506 transitions. [2024-11-07 03:31:15,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-07 03:31:15,245 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.617021276595745) internal successors, (123), 47 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-07 03:31:15,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 03:31:15,247 INFO L225 Difference]: With dead ends: 391 [2024-11-07 03:31:15,247 INFO L226 Difference]: Without dead ends: 389 [2024-11-07 03:31:15,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2282 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1255, Invalid=6755, Unknown=0, NotChecked=0, Total=8010 [2024-11-07 03:31:15,249 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 280 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 03:31:15,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 104 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 03:31:15,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-11-07 03:31:15,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 202. [2024-11-07 03:31:15,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.3482587064676617) internal successors, (271), 201 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:31:15,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 271 transitions. [2024-11-07 03:31:15,255 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 271 transitions. Word has length 44 [2024-11-07 03:31:15,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 03:31:15,255 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 271 transitions. [2024-11-07 03:31:15,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.617021276595745) internal successors, (123), 47 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:31:15,255 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 271 transitions. [2024-11-07 03:31:15,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-07 03:31:15,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 03:31:15,256 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 03:31:15,269 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 03:31:15,456 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,SelfDestructingSolverStorable9 [2024-11-07 03:31:15,457 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 03:31:15,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 03:31:15,458 INFO L85 PathProgramCache]: Analyzing trace with hash 941706665, now seen corresponding path program 2 times [2024-11-07 03:31:15,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 03:31:15,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826789201] [2024-11-07 03:31:15,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 03:31:15,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 03:31:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 03:31:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 03:31:16,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 03:31:16,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826789201] [2024-11-07 03:31:16,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826789201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 03:31:16,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240174458] [2024-11-07 03:31:16,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 03:31:16,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 03:31:16,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 03:31:16,285 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 03:31:16,288 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 03:31:16,382 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 03:31:16,383 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 03:31:16,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-07 03:31:16,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 03:31:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 03:31:17,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 03:31:27,700 WARN L286 SmtUtils]: Spent 7.04s on a formula simplification. DAG size of input: 63 DAG size of output: 25 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-07 03:32:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 03:32:04,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240174458] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 03:32:04,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 03:32:04,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 25] total 62 [2024-11-07 03:32:04,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840964593] [2024-11-07 03:32:04,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 03:32:04,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-07 03:32:04,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 03:32:04,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-07 03:32:04,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=3271, Unknown=0, NotChecked=0, Total=3782 [2024-11-07 03:32:04,499 INFO L87 Difference]: Start difference. First operand 202 states and 271 transitions. Second operand has 62 states, 62 states have (on average 2.0483870967741935) internal successors, (127), 62 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:32:10,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 03:32:10,169 INFO L93 Difference]: Finished difference Result 507 states and 671 transitions. [2024-11-07 03:32:10,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-07 03:32:10,169 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.0483870967741935) internal successors, (127), 62 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-07 03:32:10,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 03:32:10,171 INFO L225 Difference]: With dead ends: 507 [2024-11-07 03:32:10,171 INFO L226 Difference]: Without dead ends: 340 [2024-11-07 03:32:10,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 48 SyntacticMatches, 8 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4588 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=1957, Invalid=9815, Unknown=0, NotChecked=0, Total=11772 [2024-11-07 03:32:10,178 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 363 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-07 03:32:10,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 88 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-07 03:32:10,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-11-07 03:32:10,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 122. [2024-11-07 03:32:10,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.3305785123966942) internal successors, (161), 121 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:32:10,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 161 transitions. [2024-11-07 03:32:10,188 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 161 transitions. Word has length 44 [2024-11-07 03:32:10,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 03:32:10,188 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 161 transitions. [2024-11-07 03:32:10,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.0483870967741935) internal successors, (127), 62 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 03:32:10,188 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 161 transitions. [2024-11-07 03:32:10,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-07 03:32:10,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 03:32:10,197 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 03:32:10,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-07 03:32:10,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 03:32:10,398 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 03:32:10,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 03:32:10,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1797696424, now seen corresponding path program 1 times [2024-11-07 03:32:10,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 03:32:10,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343346480] [2024-11-07 03:32:10,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 03:32:10,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 03:32:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 03:32:12,268 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 30 proven. 48 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 03:32:12,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 03:32:12,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343346480] [2024-11-07 03:32:12,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343346480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 03:32:12,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952753152] [2024-11-07 03:32:12,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 03:32:12,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 03:32:12,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 03:32:12,271 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 03:32:12,273 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 03:32:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 03:32:12,437 WARN L253 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 154 conjuncts are in the unsatisfiable core [2024-11-07 03:32:12,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 03:32:13,554 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 43 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-07 03:32:13,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 03:32:25,834 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 33 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 03:32:25,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952753152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 03:32:25,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 03:32:25,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 21, 33] total 79 [2024-11-07 03:32:25,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119069790] [2024-11-07 03:32:25,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 03:32:25,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-07 03:32:25,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 03:32:25,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-07 03:32:25,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=554, Invalid=5608, Unknown=0, NotChecked=0, Total=6162 [2024-11-07 03:32:25,839 INFO L87 Difference]: Start difference. First operand 122 states and 161 transitions. Second operand has 79 states, 79 states have (on average 1.6835443037974684) internal successors, (133), 79 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)