./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/watermelon.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/loops-crafted-1/watermelon.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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', '32bit', '--witnessprinter.graph.data.programhash', 'dda0b992ac1600896503297d86377b482d0a82ded923ea00c7e9ff3fed4db7e7'] 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/loops-crafted-1/watermelon.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash dda0b992ac1600896503297d86377b482d0a82ded923ea00c7e9ff3fed4db7e7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 22:44:22,895 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 22:44:22,952 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 22:44:22,957 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 22:44:22,957 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 22:44:22,971 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 22:44:22,971 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 22:44:22,971 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 22:44:22,972 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 22:44:22,972 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 22:44:22,972 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 22:44:22,972 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 22:44:22,972 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 22:44:22,972 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 22:44:22,972 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 22:44:22,972 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 22:44:22,972 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 22:44:22,973 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 22:44:22,973 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 22:44:22,973 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 22:44:22,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 22:44:22,973 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 22:44:22,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 22:44:22,973 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 22:44:22,973 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 22:44:22,973 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 22:44:22,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 22:44:22,973 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 22:44:22,974 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 22:44:22,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 22:44:22,974 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 22:44:22,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 22:44:22,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:44:22,974 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 22:44:22,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 22:44:22,974 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 22:44:22,974 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 22:44:22,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 22:44:22,974 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 22:44:22,975 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 22:44:22,975 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 22:44:22,975 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 22:44:22,975 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda0b992ac1600896503297d86377b482d0a82ded923ea00c7e9ff3fed4db7e7 [2024-11-06 22:44:23,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 22:44:23,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 22:44:23,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 22:44:23,192 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 22:44:23,193 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 22:44:23,193 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/watermelon.c [2024-11-06 22:44:24,297 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 22:44:24,494 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 22:44:24,495 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/watermelon.c [2024-11-06 22:44:24,500 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8d5712fa3/cfaf463467ed48dbb07caa6fcabaa7c3/FLAGf0c86e40d [2024-11-06 22:44:24,855 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8d5712fa3/cfaf463467ed48dbb07caa6fcabaa7c3 [2024-11-06 22:44:24,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 22:44:24,858 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 22:44:24,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 22:44:24,860 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 22:44:24,863 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 22:44:24,863 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:24" (1/1) ... [2024-11-06 22:44:24,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31bffb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24, skipping insertion in model container [2024-11-06 22:44:24,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:24" (1/1) ... [2024-11-06 22:44:24,874 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 22:44:24,954 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/loops-crafted-1/watermelon.c[373,386] [2024-11-06 22:44:24,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:44:24,973 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 22:44:24,981 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/loops-crafted-1/watermelon.c[373,386] [2024-11-06 22:44:24,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:44:24,995 INFO L204 MainTranslator]: Completed translation [2024-11-06 22:44:24,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24 WrapperNode [2024-11-06 22:44:24,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 22:44:24,996 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 22:44:24,996 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 22:44:24,996 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 22:44:25,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2024-11-06 22:44:25,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2024-11-06 22:44:25,020 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2024-11-06 22:44:25,020 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 22:44:25,021 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 22:44:25,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 22:44:25,021 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 22:44:25,026 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2024-11-06 22:44:25,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2024-11-06 22:44:25,029 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2024-11-06 22:44:25,040 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]. [2024-11-06 22:44:25,040 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2024-11-06 22:44:25,040 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2024-11-06 22:44:25,042 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2024-11-06 22:44:25,046 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2024-11-06 22:44:25,046 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2024-11-06 22:44:25,049 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2024-11-06 22:44:25,050 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 22:44:25,051 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 22:44:25,054 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 22:44:25,054 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 22:44:25,055 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2024-11-06 22:44:25,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:44:25,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:25,081 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) [2024-11-06 22:44:25,084 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 [2024-11-06 22:44:25,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 22:44:25,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 22:44:25,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 22:44:25,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 22:44:25,145 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 22:44:25,146 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 22:44:25,226 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-06 22:44:25,226 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 22:44:25,233 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 22:44:25,234 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-06 22:44:25,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:25 BoogieIcfgContainer [2024-11-06 22:44:25,235 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 22:44:25,237 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 22:44:25,237 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 22:44:25,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 22:44:25,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:24" (1/3) ... [2024-11-06 22:44:25,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11cf138f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:25, skipping insertion in model container [2024-11-06 22:44:25,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (2/3) ... [2024-11-06 22:44:25,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11cf138f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:25, skipping insertion in model container [2024-11-06 22:44:25,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:25" (3/3) ... [2024-11-06 22:44:25,243 INFO L112 eAbstractionObserver]: Analyzing ICFG watermelon.c [2024-11-06 22:44:25,253 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 22:44:25,254 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 22:44:25,284 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 22:44:25,295 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;@4e24f19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 22:44:25,295 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 22:44:25,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 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) [2024-11-06 22:44:25,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-06 22:44:25,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:25,301 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:25,302 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:25,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:25,304 INFO L85 PathProgramCache]: Analyzing trace with hash -308913183, now seen corresponding path program 1 times [2024-11-06 22:44:25,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:25,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196913563] [2024-11-06 22:44:25,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:25,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:25,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:25,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196913563] [2024-11-06 22:44:25,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196913563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:44:25,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:44:25,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-06 22:44:25,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897939161] [2024-11-06 22:44:25,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:44:25,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-06 22:44:25,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:25,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-06 22:44:25,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-06 22:44:25,663 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 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 8 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2024-11-06 22:44:25,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:25,755 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2024-11-06 22:44:25,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 22:44:25,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 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 [2024-11-06 22:44:25,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:25,760 INFO L225 Difference]: With dead ends: 58 [2024-11-06 22:44:25,761 INFO L226 Difference]: Without dead ends: 30 [2024-11-06 22:44:25,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-06 22:44:25,767 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:25,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 153 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:25,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-06 22:44:25,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2024-11-06 22:44:25,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 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) [2024-11-06 22:44:25,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-06 22:44:25,790 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 11 [2024-11-06 22:44:25,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:25,791 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-06 22:44:25,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2024-11-06 22:44:25,791 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-06 22:44:25,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-06 22:44:25,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:25,792 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:25,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 22:44:25,793 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:25,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:25,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1020608492, now seen corresponding path program 1 times [2024-11-06 22:44:25,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:25,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469928194] [2024-11-06 22:44:25,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:25,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:25,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:25,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469928194] [2024-11-06 22:44:25,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469928194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:44:25,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:44:25,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 22:44:25,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405889863] [2024-11-06 22:44:25,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:44:25,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 22:44:25,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:25,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 22:44:25,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 22:44:25,863 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-11-06 22:44:25,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:25,884 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2024-11-06 22:44:25,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 22:44:25,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2024-11-06 22:44:25,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:25,885 INFO L225 Difference]: With dead ends: 39 [2024-11-06 22:44:25,886 INFO L226 Difference]: Without dead ends: 31 [2024-11-06 22:44:25,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 22:44:25,886 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:25,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:44:25,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-06 22:44:25,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-06 22:44:25,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 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) [2024-11-06 22:44:25,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-06 22:44:25,892 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 14 [2024-11-06 22:44:25,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:25,892 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-06 22:44:25,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-11-06 22:44:25,892 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-06 22:44:25,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-06 22:44:25,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:25,894 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:25,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 22:44:25,894 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:25,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:25,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1347327971, now seen corresponding path program 1 times [2024-11-06 22:44:25,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:25,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735600679] [2024-11-06 22:44:25,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:25,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:25,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:25,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:25,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735600679] [2024-11-06 22:44:25,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735600679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:44:25,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:44:25,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 22:44:25,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663809700] [2024-11-06 22:44:25,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:44:25,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 22:44:25,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:25,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 22:44:25,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 22:44:25,941 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-11-06 22:44:25,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:25,964 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2024-11-06 22:44:25,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 22:44:25,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2024-11-06 22:44:25,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:25,966 INFO L225 Difference]: With dead ends: 54 [2024-11-06 22:44:25,966 INFO L226 Difference]: Without dead ends: 31 [2024-11-06 22:44:25,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 22:44:25,967 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:25,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:44:25,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-06 22:44:25,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2024-11-06 22:44:25,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 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) [2024-11-06 22:44:25,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-06 22:44:25,974 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2024-11-06 22:44:25,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:25,974 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-06 22:44:25,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-11-06 22:44:25,974 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-06 22:44:25,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-06 22:44:25,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:25,975 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:25,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 22:44:25,975 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:25,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:25,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1588251726, now seen corresponding path program 1 times [2024-11-06 22:44:25,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:25,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011790166] [2024-11-06 22:44:25,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:25,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 22:44:26,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:26,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011790166] [2024-11-06 22:44:26,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011790166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:44:26,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:44:26,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:44:26,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656648835] [2024-11-06 22:44:26,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:44:26,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:44:26,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:26,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:44:26,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:44:26,122 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-11-06 22:44:26,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:26,166 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2024-11-06 22:44:26,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:44:26,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2024-11-06 22:44:26,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:26,168 INFO L225 Difference]: With dead ends: 43 [2024-11-06 22:44:26,168 INFO L226 Difference]: Without dead ends: 30 [2024-11-06 22:44:26,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:44:26,168 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:26,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 60 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:44:26,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-06 22:44:26,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-06 22:44:26,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 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) [2024-11-06 22:44:26,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-11-06 22:44:26,174 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 16 [2024-11-06 22:44:26,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:26,174 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-11-06 22:44:26,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-11-06 22:44:26,174 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-11-06 22:44:26,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-06 22:44:26,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:26,175 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:26,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 22:44:26,175 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:26,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:26,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1821914591, now seen corresponding path program 1 times [2024-11-06 22:44:26,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:26,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949567818] [2024-11-06 22:44:26,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:26,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 22:44:26,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:26,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949567818] [2024-11-06 22:44:26,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949567818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:44:26,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:44:26,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-06 22:44:26,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406585033] [2024-11-06 22:44:26,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:44:26,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 22:44:26,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:26,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 22:44:26,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:44:26,293 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2024-11-06 22:44:26,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:26,323 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-11-06 22:44:26,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 22:44:26,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2024-11-06 22:44:26,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:26,324 INFO L225 Difference]: With dead ends: 35 [2024-11-06 22:44:26,324 INFO L226 Difference]: Without dead ends: 30 [2024-11-06 22:44:26,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:44:26,325 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:26,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 38 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:44:26,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-06 22:44:26,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-06 22:44:26,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 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) [2024-11-06 22:44:26,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-11-06 22:44:26,328 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 16 [2024-11-06 22:44:26,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:26,329 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-11-06 22:44:26,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2024-11-06 22:44:26,329 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-11-06 22:44:26,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-06 22:44:26,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:26,329 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:26,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 22:44:26,330 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:26,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:26,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1807329994, now seen corresponding path program 1 times [2024-11-06 22:44:26,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:26,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641716619] [2024-11-06 22:44:26,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:26,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 22:44:26,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:26,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641716619] [2024-11-06 22:44:26,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641716619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:26,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15714366] [2024-11-06 22:44:26,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:26,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:26,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:26,371 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) [2024-11-06 22:44:26,372 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 [2024-11-06 22:44:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:26,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 22:44:26,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:26,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 22:44:26,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:26,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 22:44:26,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15714366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:26,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:26,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-06 22:44:26,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424104300] [2024-11-06 22:44:26,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:26,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-06 22:44:26,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:26,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-06 22:44:26,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-06 22:44:26,491 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2024-11-06 22:44:26,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:26,518 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2024-11-06 22:44:26,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:44:26,518 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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 [2024-11-06 22:44:26,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:26,519 INFO L225 Difference]: With dead ends: 56 [2024-11-06 22:44:26,519 INFO L226 Difference]: Without dead ends: 33 [2024-11-06 22:44:26,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-06 22:44:26,520 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:26,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 63 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:44:26,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-06 22:44:26,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2024-11-06 22:44:26,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 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) [2024-11-06 22:44:26,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-06 22:44:26,525 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 21 [2024-11-06 22:44:26,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:26,525 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-06 22:44:26,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2024-11-06 22:44:26,525 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-06 22:44:26,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-06 22:44:26,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:26,525 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:26,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 22:44:26,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:26,726 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:26,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:26,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1305286348, now seen corresponding path program 2 times [2024-11-06 22:44:26,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:26,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221016321] [2024-11-06 22:44:26,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:26,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:26,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 22:44:26,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:26,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221016321] [2024-11-06 22:44:26,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221016321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:26,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140815779] [2024-11-06 22:44:26,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:44:26,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:26,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:26,798 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) [2024-11-06 22:44:26,799 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 [2024-11-06 22:44:26,842 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:44:26,842 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:26,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 22:44:26,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 22:44:26,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:26,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 22:44:26,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140815779] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:26,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:26,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2024-11-06 22:44:26,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246502695] [2024-11-06 22:44:26,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:26,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-06 22:44:26,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:26,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-06 22:44:26,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-06 22:44:26,901 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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) [2024-11-06 22:44:26,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:26,957 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2024-11-06 22:44:26,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 22:44:26,957 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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 [2024-11-06 22:44:26,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:26,957 INFO L225 Difference]: With dead ends: 56 [2024-11-06 22:44:26,957 INFO L226 Difference]: Without dead ends: 41 [2024-11-06 22:44:26,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-06 22:44:26,958 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:26,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 105 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:44:26,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-06 22:44:26,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2024-11-06 22:44:26,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:26,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2024-11-06 22:44:26,962 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 23 [2024-11-06 22:44:26,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:26,962 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2024-11-06 22:44:26,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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) [2024-11-06 22:44:26,963 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2024-11-06 22:44:26,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-06 22:44:26,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:26,963 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:26,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 22:44:27,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:27,164 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:27,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:27,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1364091054, now seen corresponding path program 1 times [2024-11-06 22:44:27,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:27,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533714908] [2024-11-06 22:44:27,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:27,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:27,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 22:44:27,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:27,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533714908] [2024-11-06 22:44:27,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533714908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:27,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307120423] [2024-11-06 22:44:27,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:27,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:27,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:27,224 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) [2024-11-06 22:44:27,226 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 [2024-11-06 22:44:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:27,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-06 22:44:27,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:27,345 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 22:44:27,345 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:27,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 22:44:27,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307120423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:27,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:27,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-06 22:44:27,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67350495] [2024-11-06 22:44:27,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:27,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-06 22:44:27,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:27,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-06 22:44:27,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-06 22:44:27,380 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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) [2024-11-06 22:44:27,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:27,417 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2024-11-06 22:44:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 22:44:27,417 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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 25 [2024-11-06 22:44:27,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:27,418 INFO L225 Difference]: With dead ends: 53 [2024-11-06 22:44:27,418 INFO L226 Difference]: Without dead ends: 47 [2024-11-06 22:44:27,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-06 22:44:27,419 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:27,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 89 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:44:27,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-06 22:44:27,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2024-11-06 22:44:27,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:27,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2024-11-06 22:44:27,427 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 25 [2024-11-06 22:44:27,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:27,427 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2024-11-06 22:44:27,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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) [2024-11-06 22:44:27,427 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2024-11-06 22:44:27,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-06 22:44:27,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:27,427 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:27,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-06 22:44:27,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:27,633 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:27,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:27,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1306832752, now seen corresponding path program 1 times [2024-11-06 22:44:27,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:27,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536110451] [2024-11-06 22:44:27,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:27,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-06 22:44:27,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:27,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536110451] [2024-11-06 22:44:27,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536110451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:44:27,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:44:27,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-06 22:44:27,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865688977] [2024-11-06 22:44:27,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:44:27,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 22:44:27,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:27,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 22:44:27,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-06 22:44:27,709 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2024-11-06 22:44:27,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:27,740 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2024-11-06 22:44:27,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 22:44:27,741 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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 25 [2024-11-06 22:44:27,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:27,741 INFO L225 Difference]: With dead ends: 48 [2024-11-06 22:44:27,741 INFO L226 Difference]: Without dead ends: 41 [2024-11-06 22:44:27,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-06 22:44:27,741 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:27,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:44:27,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-06 22:44:27,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-06 22:44:27,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 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) [2024-11-06 22:44:27,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2024-11-06 22:44:27,745 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 25 [2024-11-06 22:44:27,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:27,745 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2024-11-06 22:44:27,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2024-11-06 22:44:27,746 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2024-11-06 22:44:27,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-06 22:44:27,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:27,746 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:27,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-06 22:44:27,746 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:27,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:27,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1829116944, now seen corresponding path program 2 times [2024-11-06 22:44:27,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:27,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872452409] [2024-11-06 22:44:27,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:27,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:27,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:27,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872452409] [2024-11-06 22:44:27,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872452409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:27,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304144034] [2024-11-06 22:44:27,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:44:27,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:27,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:27,969 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) [2024-11-06 22:44:27,970 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 [2024-11-06 22:44:28,011 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:44:28,012 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:28,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-06 22:44:28,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:28,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:28,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304144034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:28,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:28,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2024-11-06 22:44:28,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786709] [2024-11-06 22:44:28,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:28,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-06 22:44:28,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:28,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-06 22:44:28,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2024-11-06 22:44:28,474 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 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) [2024-11-06 22:44:28,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:28,592 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2024-11-06 22:44:28,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 22:44:28,592 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 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 27 [2024-11-06 22:44:28,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:28,593 INFO L225 Difference]: With dead ends: 60 [2024-11-06 22:44:28,593 INFO L226 Difference]: Without dead ends: 41 [2024-11-06 22:44:28,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2024-11-06 22:44:28,594 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:28,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 61 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:28,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-06 22:44:28,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2024-11-06 22:44:28,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 states have internal predecessors, (43), 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) [2024-11-06 22:44:28,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2024-11-06 22:44:28,601 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 27 [2024-11-06 22:44:28,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:28,601 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2024-11-06 22:44:28,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 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) [2024-11-06 22:44:28,601 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2024-11-06 22:44:28,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-06 22:44:28,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:28,602 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:28,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-06 22:44:28,802 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,SelfDestructingSolverStorable9 [2024-11-06 22:44:28,802 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:28,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:28,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1549662672, now seen corresponding path program 3 times [2024-11-06 22:44:28,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:28,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341486196] [2024-11-06 22:44:28,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:28,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:29,008 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:29,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:29,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341486196] [2024-11-06 22:44:29,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341486196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:29,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092750693] [2024-11-06 22:44:29,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:44:29,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:29,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:29,011 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) [2024-11-06 22:44:29,012 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 [2024-11-06 22:44:29,049 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-06 22:44:29,049 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:29,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-06 22:44:29,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:29,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:29,449 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:29,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092750693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:29,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:29,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2024-11-06 22:44:29,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914576941] [2024-11-06 22:44:29,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:29,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-06 22:44:29,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:29,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-06 22:44:29,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2024-11-06 22:44:29,453 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 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) [2024-11-06 22:44:29,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:29,568 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2024-11-06 22:44:29,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-06 22:44:29,568 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 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 27 [2024-11-06 22:44:29,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:29,569 INFO L225 Difference]: With dead ends: 51 [2024-11-06 22:44:29,569 INFO L226 Difference]: Without dead ends: 44 [2024-11-06 22:44:29,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2024-11-06 22:44:29,570 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:29,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 73 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:29,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-06 22:44:29,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-11-06 22:44:29,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 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) [2024-11-06 22:44:29,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2024-11-06 22:44:29,583 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 27 [2024-11-06 22:44:29,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:29,583 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2024-11-06 22:44:29,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 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) [2024-11-06 22:44:29,583 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2024-11-06 22:44:29,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-06 22:44:29,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:29,584 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:29,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 22:44:29,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-06 22:44:29,784 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:29,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:29,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1163858322, now seen corresponding path program 4 times [2024-11-06 22:44:29,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:29,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649174424] [2024-11-06 22:44:29,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:29,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:30,062 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:30,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:30,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649174424] [2024-11-06 22:44:30,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649174424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:30,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776069353] [2024-11-06 22:44:30,062 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 22:44:30,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:30,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:30,064 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) [2024-11-06 22:44:30,065 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 [2024-11-06 22:44:30,103 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 22:44:30,103 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:30,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-06 22:44:30,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:30,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:30,651 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:30,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776069353] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:30,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:30,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 31 [2024-11-06 22:44:30,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971915197] [2024-11-06 22:44:30,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:30,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-06 22:44:30,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:30,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-06 22:44:30,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2024-11-06 22:44:30,652 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 31 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:30,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:30,874 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2024-11-06 22:44:30,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-06 22:44:30,875 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 31 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-06 22:44:30,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:30,875 INFO L225 Difference]: With dead ends: 67 [2024-11-06 22:44:30,875 INFO L226 Difference]: Without dead ends: 46 [2024-11-06 22:44:30,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=199, Invalid=857, Unknown=0, NotChecked=0, Total=1056 [2024-11-06 22:44:30,876 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:30,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 126 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:30,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-06 22:44:30,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-11-06 22:44:30,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 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) [2024-11-06 22:44:30,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-11-06 22:44:30,879 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 29 [2024-11-06 22:44:30,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:30,880 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-11-06 22:44:30,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 31 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:30,880 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-11-06 22:44:30,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-06 22:44:30,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:30,880 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:30,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-06 22:44:31,081 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,SelfDestructingSolverStorable11 [2024-11-06 22:44:31,081 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:31,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:31,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1079705966, now seen corresponding path program 3 times [2024-11-06 22:44:31,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:31,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012176912] [2024-11-06 22:44:31,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:31,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:31,310 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:31,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:31,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012176912] [2024-11-06 22:44:31,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012176912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:31,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063842715] [2024-11-06 22:44:31,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:44:31,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:31,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:31,314 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) [2024-11-06 22:44:31,315 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 [2024-11-06 22:44:31,352 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-06 22:44:31,353 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:31,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-06 22:44:31,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:31,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:31,823 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:31,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063842715] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:31,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:31,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 30 [2024-11-06 22:44:31,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540562091] [2024-11-06 22:44:31,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:31,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-06 22:44:31,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:31,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-06 22:44:31,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2024-11-06 22:44:31,824 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:31,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:31,958 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2024-11-06 22:44:31,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-06 22:44:31,958 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-06 22:44:31,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:31,958 INFO L225 Difference]: With dead ends: 59 [2024-11-06 22:44:31,958 INFO L226 Difference]: Without dead ends: 52 [2024-11-06 22:44:31,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=795, Unknown=0, NotChecked=0, Total=992 [2024-11-06 22:44:31,959 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:31,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 77 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:31,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-06 22:44:31,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2024-11-06 22:44:31,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 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) [2024-11-06 22:44:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2024-11-06 22:44:31,963 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 29 [2024-11-06 22:44:31,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:31,963 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2024-11-06 22:44:31,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:31,963 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2024-11-06 22:44:31,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-06 22:44:31,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:31,963 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:31,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-06 22:44:32,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:32,168 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:32,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:32,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1607675660, now seen corresponding path program 4 times [2024-11-06 22:44:32,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:32,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269607134] [2024-11-06 22:44:32,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:32,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:32,373 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:32,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:32,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269607134] [2024-11-06 22:44:32,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269607134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:32,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310722455] [2024-11-06 22:44:32,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 22:44:32,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:32,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:32,376 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) [2024-11-06 22:44:32,377 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 [2024-11-06 22:44:32,415 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 22:44:32,415 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:32,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-06 22:44:32,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:32,654 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:32,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:32,816 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:32,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310722455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:32,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:32,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 29 [2024-11-06 22:44:32,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502374730] [2024-11-06 22:44:32,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:32,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-06 22:44:32,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:32,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-06 22:44:32,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2024-11-06 22:44:32,817 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 29 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:32,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:32,961 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2024-11-06 22:44:32,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-06 22:44:32,962 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 29 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-06 22:44:32,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:32,962 INFO L225 Difference]: With dead ends: 68 [2024-11-06 22:44:32,963 INFO L226 Difference]: Without dead ends: 47 [2024-11-06 22:44:32,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=193, Invalid=737, Unknown=0, NotChecked=0, Total=930 [2024-11-06 22:44:32,964 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:32,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 108 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:32,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-06 22:44:32,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-06 22:44:32,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 45 states have internal predecessors, (49), 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) [2024-11-06 22:44:32,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2024-11-06 22:44:32,968 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 31 [2024-11-06 22:44:32,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:32,970 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2024-11-06 22:44:32,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 29 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:32,970 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2024-11-06 22:44:32,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-06 22:44:32,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:32,971 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:32,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-06 22:44:33,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:33,171 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:33,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:33,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1808751508, now seen corresponding path program 5 times [2024-11-06 22:44:33,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:33,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382843387] [2024-11-06 22:44:33,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:33,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:33,367 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:33,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:33,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382843387] [2024-11-06 22:44:33,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382843387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:33,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798722552] [2024-11-06 22:44:33,368 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 22:44:33,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:33,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:33,369 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:33,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-06 22:44:33,412 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-06 22:44:33,412 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:33,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-06 22:44:33,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:33,620 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:33,815 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:33,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798722552] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:33,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:33,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 29 [2024-11-06 22:44:33,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8975912] [2024-11-06 22:44:33,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:33,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-06 22:44:33,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:33,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-06 22:44:33,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812 [2024-11-06 22:44:33,816 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 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) [2024-11-06 22:44:33,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:33,967 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2024-11-06 22:44:33,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-06 22:44:33,967 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 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 31 [2024-11-06 22:44:33,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:33,968 INFO L225 Difference]: With dead ends: 57 [2024-11-06 22:44:33,968 INFO L226 Difference]: Without dead ends: 50 [2024-11-06 22:44:33,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=732, Unknown=0, NotChecked=0, Total=930 [2024-11-06 22:44:33,969 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:33,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 111 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:33,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-06 22:44:33,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2024-11-06 22:44:33,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 47 states have internal predecessors, (51), 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) [2024-11-06 22:44:33,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2024-11-06 22:44:33,976 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 31 [2024-11-06 22:44:33,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:33,977 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2024-11-06 22:44:33,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 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) [2024-11-06 22:44:33,977 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2024-11-06 22:44:33,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-06 22:44:33,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:33,978 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:33,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-06 22:44:34,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:34,179 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:34,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:34,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1215521290, now seen corresponding path program 6 times [2024-11-06 22:44:34,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:34,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532589563] [2024-11-06 22:44:34,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:34,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:34,439 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:34,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:34,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532589563] [2024-11-06 22:44:34,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532589563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:34,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451765495] [2024-11-06 22:44:34,440 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 22:44:34,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:34,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:34,442 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:34,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-06 22:44:34,480 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-06 22:44:34,480 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:34,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-06 22:44:34,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:34,762 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:34,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:34,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451765495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:34,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:34,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2024-11-06 22:44:34,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138178555] [2024-11-06 22:44:34,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:34,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-06 22:44:34,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:34,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-06 22:44:34,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1027, Unknown=0, NotChecked=0, Total=1260 [2024-11-06 22:44:34,964 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 36 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:35,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:35,137 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2024-11-06 22:44:35,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-06 22:44:35,138 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 36 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-06 22:44:35,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:35,138 INFO L225 Difference]: With dead ends: 75 [2024-11-06 22:44:35,138 INFO L226 Difference]: Without dead ends: 52 [2024-11-06 22:44:35,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1149, Unknown=0, NotChecked=0, Total=1406 [2024-11-06 22:44:35,139 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:35,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 98 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:35,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-06 22:44:35,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2024-11-06 22:44:35,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.1) internal successors, (55), 50 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:35,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2024-11-06 22:44:35,146 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 33 [2024-11-06 22:44:35,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:35,146 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2024-11-06 22:44:35,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 36 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:35,147 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2024-11-06 22:44:35,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-06 22:44:35,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:35,147 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:35,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-06 22:44:35,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-06 22:44:35,347 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:35,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:35,348 INFO L85 PathProgramCache]: Analyzing trace with hash 340614538, now seen corresponding path program 5 times [2024-11-06 22:44:35,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:35,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950777460] [2024-11-06 22:44:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:35,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:35,591 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:35,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:35,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950777460] [2024-11-06 22:44:35,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950777460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:35,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078689557] [2024-11-06 22:44:35,591 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 22:44:35,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:35,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:35,593 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:35,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-06 22:44:35,631 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-06 22:44:35,632 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:35,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-06 22:44:35,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:35,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:36,138 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:36,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078689557] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:36,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:36,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2024-11-06 22:44:36,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786653755] [2024-11-06 22:44:36,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:36,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-06 22:44:36,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:36,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-06 22:44:36,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=962, Unknown=0, NotChecked=0, Total=1190 [2024-11-06 22:44:36,140 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:36,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:36,275 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2024-11-06 22:44:36,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-06 22:44:36,275 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-06 22:44:36,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:36,276 INFO L225 Difference]: With dead ends: 65 [2024-11-06 22:44:36,276 INFO L226 Difference]: Without dead ends: 58 [2024-11-06 22:44:36,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=259, Invalid=1073, Unknown=0, NotChecked=0, Total=1332 [2024-11-06 22:44:36,276 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:36,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 121 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:36,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-06 22:44:36,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2024-11-06 22:44:36,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 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) [2024-11-06 22:44:36,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2024-11-06 22:44:36,280 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 33 [2024-11-06 22:44:36,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:36,280 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2024-11-06 22:44:36,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:36,280 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2024-11-06 22:44:36,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-06 22:44:36,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:36,280 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:36,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-06 22:44:36,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-06 22:44:36,481 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:36,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:36,481 INFO L85 PathProgramCache]: Analyzing trace with hash 10417192, now seen corresponding path program 6 times [2024-11-06 22:44:36,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:36,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952958679] [2024-11-06 22:44:36,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:36,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:36,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:36,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952958679] [2024-11-06 22:44:36,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952958679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:36,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014382221] [2024-11-06 22:44:36,722 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 22:44:36,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:36,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:36,724 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:36,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-06 22:44:36,767 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-06 22:44:36,767 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:36,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-06 22:44:36,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:37,061 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:37,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:37,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014382221] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:37,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:37,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2024-11-06 22:44:37,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366495257] [2024-11-06 22:44:37,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:37,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-06 22:44:37,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:37,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-06 22:44:37,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=896, Unknown=0, NotChecked=0, Total=1122 [2024-11-06 22:44:37,255 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:37,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:37,392 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2024-11-06 22:44:37,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-06 22:44:37,392 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-06 22:44:37,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:37,392 INFO L225 Difference]: With dead ends: 76 [2024-11-06 22:44:37,392 INFO L226 Difference]: Without dead ends: 53 [2024-11-06 22:44:37,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=1007, Unknown=0, NotChecked=0, Total=1260 [2024-11-06 22:44:37,393 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:37,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 124 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:37,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-06 22:44:37,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2024-11-06 22:44:37,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2024-11-06 22:44:37,396 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 35 [2024-11-06 22:44:37,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:37,396 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2024-11-06 22:44:37,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:37,396 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2024-11-06 22:44:37,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-06 22:44:37,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:37,397 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:37,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-06 22:44:37,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-06 22:44:37,597 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:37,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:37,598 INFO L85 PathProgramCache]: Analyzing trace with hash -954472184, now seen corresponding path program 7 times [2024-11-06 22:44:37,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:37,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812082678] [2024-11-06 22:44:37,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:37,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:37,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:37,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812082678] [2024-11-06 22:44:37,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812082678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:37,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656994908] [2024-11-06 22:44:37,824 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 22:44:37,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:37,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:37,826 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:37,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-06 22:44:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:37,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-06 22:44:37,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:38,076 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:38,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:38,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656994908] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:38,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:38,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2024-11-06 22:44:38,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284589313] [2024-11-06 22:44:38,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:38,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-06 22:44:38,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:38,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-06 22:44:38,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2024-11-06 22:44:38,299 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 34 states have internal predecessors, (73), 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) [2024-11-06 22:44:38,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:38,410 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2024-11-06 22:44:38,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-06 22:44:38,411 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 34 states have internal predecessors, (73), 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 35 [2024-11-06 22:44:38,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:38,411 INFO L225 Difference]: With dead ends: 63 [2024-11-06 22:44:38,411 INFO L226 Difference]: Without dead ends: 56 [2024-11-06 22:44:38,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=261, Invalid=999, Unknown=0, NotChecked=0, Total=1260 [2024-11-06 22:44:38,412 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:38,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 92 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:38,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-06 22:44:38,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2024-11-06 22:44:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 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) [2024-11-06 22:44:38,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2024-11-06 22:44:38,415 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 35 [2024-11-06 22:44:38,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:38,415 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2024-11-06 22:44:38,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 34 states have internal predecessors, (73), 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) [2024-11-06 22:44:38,415 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2024-11-06 22:44:38,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-06 22:44:38,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:38,415 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:38,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-06 22:44:38,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:38,619 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:38,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:38,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1839198118, now seen corresponding path program 8 times [2024-11-06 22:44:38,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:38,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008945163] [2024-11-06 22:44:38,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:38,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:38,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:38,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008945163] [2024-11-06 22:44:38,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008945163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:38,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870429726] [2024-11-06 22:44:38,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:44:38,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:38,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:38,903 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:38,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-06 22:44:38,942 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:44:38,942 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:38,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-06 22:44:38,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:39,259 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:39,259 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:39,503 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:39,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870429726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:39,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:39,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2024-11-06 22:44:39,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798568190] [2024-11-06 22:44:39,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:39,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-06 22:44:39,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:39,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-06 22:44:39,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1341, Unknown=0, NotChecked=0, Total=1640 [2024-11-06 22:44:39,504 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 41 states, 41 states have (on average 1.975609756097561) internal successors, (81), 41 states have internal predecessors, (81), 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) [2024-11-06 22:44:39,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:39,683 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2024-11-06 22:44:39,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-06 22:44:39,683 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.975609756097561) internal successors, (81), 41 states have internal predecessors, (81), 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 37 [2024-11-06 22:44:39,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:39,683 INFO L225 Difference]: With dead ends: 83 [2024-11-06 22:44:39,683 INFO L226 Difference]: Without dead ends: 58 [2024-11-06 22:44:39,684 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2024-11-06 22:44:39,684 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:39,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 96 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:39,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-06 22:44:39,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2024-11-06 22:44:39,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 56 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:39,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2024-11-06 22:44:39,688 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 37 [2024-11-06 22:44:39,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:39,688 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2024-11-06 22:44:39,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.975609756097561) internal successors, (81), 41 states have internal predecessors, (81), 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) [2024-11-06 22:44:39,688 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2024-11-06 22:44:39,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-06 22:44:39,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:39,688 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:39,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-06 22:44:39,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:39,889 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:39,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:39,889 INFO L85 PathProgramCache]: Analyzing trace with hash 2000794534, now seen corresponding path program 7 times [2024-11-06 22:44:39,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:39,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290837448] [2024-11-06 22:44:39,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:39,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:40,146 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:40,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:40,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290837448] [2024-11-06 22:44:40,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290837448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:40,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435645986] [2024-11-06 22:44:40,147 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 22:44:40,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:40,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:40,148 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:40,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-06 22:44:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:40,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-06 22:44:40,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:40,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:40,668 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:40,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435645986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:40,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:40,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2024-11-06 22:44:40,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192232588] [2024-11-06 22:44:40,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:40,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-06 22:44:40,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:40,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-06 22:44:40,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1265, Unknown=0, NotChecked=0, Total=1560 [2024-11-06 22:44:40,670 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 40 states, 40 states have (on average 2.025) internal successors, (81), 40 states have internal predecessors, (81), 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) [2024-11-06 22:44:40,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:40,803 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2024-11-06 22:44:40,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-06 22:44:40,803 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.025) internal successors, (81), 40 states have internal predecessors, (81), 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 37 [2024-11-06 22:44:40,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:40,803 INFO L225 Difference]: With dead ends: 71 [2024-11-06 22:44:40,803 INFO L226 Difference]: Without dead ends: 64 [2024-11-06 22:44:40,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=330, Invalid=1392, Unknown=0, NotChecked=0, Total=1722 [2024-11-06 22:44:40,804 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:40,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 109 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:40,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-06 22:44:40,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2024-11-06 22:44:40,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 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) [2024-11-06 22:44:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2024-11-06 22:44:40,807 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 37 [2024-11-06 22:44:40,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:40,807 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2024-11-06 22:44:40,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.025) internal successors, (81), 40 states have internal predecessors, (81), 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) [2024-11-06 22:44:40,807 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2024-11-06 22:44:40,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-06 22:44:40,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:40,808 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:40,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-06 22:44:41,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:41,009 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:41,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:41,009 INFO L85 PathProgramCache]: Analyzing trace with hash 2010526532, now seen corresponding path program 8 times [2024-11-06 22:44:41,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:41,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140895795] [2024-11-06 22:44:41,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:41,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:41,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:41,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140895795] [2024-11-06 22:44:41,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140895795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:41,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651600102] [2024-11-06 22:44:41,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:44:41,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:41,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:41,239 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:41,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-06 22:44:41,279 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:44:41,279 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:41,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-06 22:44:41,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:41,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:41,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651600102] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:41,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:41,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 39 [2024-11-06 22:44:41,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747138330] [2024-11-06 22:44:41,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:41,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-06 22:44:41,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:41,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-06 22:44:41,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1189, Unknown=0, NotChecked=0, Total=1482 [2024-11-06 22:44:41,761 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 39 states, 39 states have (on average 2.076923076923077) internal successors, (81), 39 states have internal predecessors, (81), 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) [2024-11-06 22:44:41,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:41,920 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2024-11-06 22:44:41,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-06 22:44:41,923 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.076923076923077) internal successors, (81), 39 states have internal predecessors, (81), 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 39 [2024-11-06 22:44:41,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:41,923 INFO L225 Difference]: With dead ends: 84 [2024-11-06 22:44:41,923 INFO L226 Difference]: Without dead ends: 59 [2024-11-06 22:44:41,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=322, Invalid=1318, Unknown=0, NotChecked=0, Total=1640 [2024-11-06 22:44:41,925 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:41,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 97 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:41,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-06 22:44:41,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2024-11-06 22:44:41,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 57 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:41,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2024-11-06 22:44:41,929 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 39 [2024-11-06 22:44:41,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:41,929 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2024-11-06 22:44:41,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.076923076923077) internal successors, (81), 39 states have internal predecessors, (81), 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) [2024-11-06 22:44:41,929 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2024-11-06 22:44:41,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-06 22:44:41,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:41,930 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:41,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-06 22:44:42,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:42,130 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:42,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:42,131 INFO L85 PathProgramCache]: Analyzing trace with hash -963590236, now seen corresponding path program 9 times [2024-11-06 22:44:42,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:42,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991910070] [2024-11-06 22:44:42,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:42,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:42,382 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:42,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:42,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991910070] [2024-11-06 22:44:42,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991910070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:42,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021693140] [2024-11-06 22:44:42,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:44:42,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:42,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:42,384 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:42,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-06 22:44:42,423 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-06 22:44:42,423 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:42,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-06 22:44:42,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:42,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:42,890 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:42,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021693140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:42,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:42,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 39 [2024-11-06 22:44:42,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325502541] [2024-11-06 22:44:42,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:42,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-06 22:44:42,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:42,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-06 22:44:42,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1184, Unknown=0, NotChecked=0, Total=1482 [2024-11-06 22:44:42,891 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 39 states, 39 states have (on average 2.128205128205128) internal successors, (83), 39 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:43,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:43,018 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2024-11-06 22:44:43,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-06 22:44:43,019 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.128205128205128) internal successors, (83), 39 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-06 22:44:43,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:43,019 INFO L225 Difference]: With dead ends: 69 [2024-11-06 22:44:43,019 INFO L226 Difference]: Without dead ends: 62 [2024-11-06 22:44:43,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=333, Invalid=1307, Unknown=0, NotChecked=0, Total=1640 [2024-11-06 22:44:43,020 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:43,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 114 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:43,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-06 22:44:43,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2024-11-06 22:44:43,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 59 states have internal predecessors, (63), 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) [2024-11-06 22:44:43,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2024-11-06 22:44:43,023 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 39 [2024-11-06 22:44:43,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:43,023 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2024-11-06 22:44:43,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.128205128205128) internal successors, (83), 39 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:43,023 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2024-11-06 22:44:43,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-06 22:44:43,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:43,023 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:43,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-06 22:44:43,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:43,224 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:43,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:43,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1666684738, now seen corresponding path program 10 times [2024-11-06 22:44:43,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:43,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768536364] [2024-11-06 22:44:43,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:43,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:43,502 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 25 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:43,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:43,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768536364] [2024-11-06 22:44:43,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768536364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:43,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452341874] [2024-11-06 22:44:43,503 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 22:44:43,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:43,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:43,505 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:43,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-06 22:44:43,544 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 22:44:43,544 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:43,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-06 22:44:43,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:43,933 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:43,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:44,216 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:44,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452341874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:44,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:44,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 46 [2024-11-06 22:44:44,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489783416] [2024-11-06 22:44:44,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:44,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-06 22:44:44,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:44,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-06 22:44:44,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=1696, Unknown=0, NotChecked=0, Total=2070 [2024-11-06 22:44:44,217 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 46 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 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) [2024-11-06 22:44:44,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:44,397 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2024-11-06 22:44:44,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-06 22:44:44,397 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 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 [2024-11-06 22:44:44,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:44,398 INFO L225 Difference]: With dead ends: 91 [2024-11-06 22:44:44,398 INFO L226 Difference]: Without dead ends: 64 [2024-11-06 22:44:44,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=400, Invalid=1856, Unknown=0, NotChecked=0, Total=2256 [2024-11-06 22:44:44,398 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:44,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 83 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:44,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-06 22:44:44,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2024-11-06 22:44:44,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 62 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:44,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2024-11-06 22:44:44,402 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 41 [2024-11-06 22:44:44,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:44,402 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2024-11-06 22:44:44,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 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) [2024-11-06 22:44:44,402 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2024-11-06 22:44:44,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-06 22:44:44,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:44,402 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:44,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-06 22:44:44,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-06 22:44:44,603 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:44,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:44,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1475412930, now seen corresponding path program 9 times [2024-11-06 22:44:44,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:44,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327981430] [2024-11-06 22:44:44,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:44,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 25 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:44,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:44,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327981430] [2024-11-06 22:44:44,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327981430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:44,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262918217] [2024-11-06 22:44:44,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:44:44,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:44,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:44,870 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:44,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-06 22:44:44,912 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-06 22:44:44,912 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:44,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-06 22:44:44,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:45,237 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:45,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:45,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262918217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:45,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:45,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 45 [2024-11-06 22:44:45,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470880125] [2024-11-06 22:44:45,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:45,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-06 22:44:45,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:45,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-06 22:44:45,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1609, Unknown=0, NotChecked=0, Total=1980 [2024-11-06 22:44:45,553 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 45 states have internal predecessors, (91), 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) [2024-11-06 22:44:45,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:45,723 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2024-11-06 22:44:45,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-06 22:44:45,724 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 45 states have internal predecessors, (91), 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 [2024-11-06 22:44:45,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:45,724 INFO L225 Difference]: With dead ends: 77 [2024-11-06 22:44:45,724 INFO L226 Difference]: Without dead ends: 70 [2024-11-06 22:44:45,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 50 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=410, Invalid=1752, Unknown=0, NotChecked=0, Total=2162 [2024-11-06 22:44:45,725 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:45,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 101 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:45,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-06 22:44:45,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2024-11-06 22:44:45,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:45,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2024-11-06 22:44:45,729 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 41 [2024-11-06 22:44:45,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:45,729 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2024-11-06 22:44:45,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 45 states have internal predecessors, (91), 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) [2024-11-06 22:44:45,729 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2024-11-06 22:44:45,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-06 22:44:45,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:45,729 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:45,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-06 22:44:45,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:45,930 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:45,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:45,932 INFO L85 PathProgramCache]: Analyzing trace with hash -370021280, now seen corresponding path program 10 times [2024-11-06 22:44:45,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:45,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533664595] [2024-11-06 22:44:45,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:45,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:46,185 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 38 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:46,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:46,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533664595] [2024-11-06 22:44:46,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533664595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:46,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350019226] [2024-11-06 22:44:46,185 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 22:44:46,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:46,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:46,187 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:46,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-06 22:44:46,227 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 22:44:46,227 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:46,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-06 22:44:46,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:46,535 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:46,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:46,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350019226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:46,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:46,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 44 [2024-11-06 22:44:46,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230497237] [2024-11-06 22:44:46,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:46,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-06 22:44:46,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:46,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-06 22:44:46,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=1523, Unknown=0, NotChecked=0, Total=1892 [2024-11-06 22:44:46,799 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 44 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 44 states have internal predecessors, (91), 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) [2024-11-06 22:44:46,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:46,947 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2024-11-06 22:44:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-06 22:44:46,948 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 44 states have internal predecessors, (91), 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 [2024-11-06 22:44:46,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:46,948 INFO L225 Difference]: With dead ends: 92 [2024-11-06 22:44:46,948 INFO L226 Difference]: Without dead ends: 65 [2024-11-06 22:44:46,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=400, Invalid=1670, Unknown=0, NotChecked=0, Total=2070 [2024-11-06 22:44:46,949 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:46,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 104 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:46,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-06 22:44:46,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2024-11-06 22:44:46,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 63 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:46,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2024-11-06 22:44:46,952 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 43 [2024-11-06 22:44:46,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:46,953 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2024-11-06 22:44:46,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 44 states have internal predecessors, (91), 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) [2024-11-06 22:44:46,953 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2024-11-06 22:44:46,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-06 22:44:46,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:46,953 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:46,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-06 22:44:47,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-06 22:44:47,154 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:47,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:47,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1476378560, now seen corresponding path program 11 times [2024-11-06 22:44:47,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:47,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119945797] [2024-11-06 22:44:47,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:47,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:47,423 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:47,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:47,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119945797] [2024-11-06 22:44:47,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119945797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:47,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421207329] [2024-11-06 22:44:47,424 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 22:44:47,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:47,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:47,425 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:47,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-06 22:44:47,466 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-06 22:44:47,466 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:47,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-06 22:44:47,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:47,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:48,011 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:48,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421207329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:48,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:48,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 44 [2024-11-06 22:44:48,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456436015] [2024-11-06 22:44:48,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:48,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-06 22:44:48,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:48,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-06 22:44:48,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=1517, Unknown=0, NotChecked=0, Total=1892 [2024-11-06 22:44:48,012 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 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) [2024-11-06 22:44:48,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:48,153 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2024-11-06 22:44:48,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-06 22:44:48,154 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 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 [2024-11-06 22:44:48,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:48,154 INFO L225 Difference]: With dead ends: 75 [2024-11-06 22:44:48,154 INFO L226 Difference]: Without dead ends: 68 [2024-11-06 22:44:48,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 55 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=414, Invalid=1656, Unknown=0, NotChecked=0, Total=2070 [2024-11-06 22:44:48,155 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:48,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 101 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:48,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-06 22:44:48,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-11-06 22:44:48,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0615384615384615) internal successors, (69), 65 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:44:48,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2024-11-06 22:44:48,158 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 43 [2024-11-06 22:44:48,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:48,158 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2024-11-06 22:44:48,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 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) [2024-11-06 22:44:48,158 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2024-11-06 22:44:48,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-06 22:44:48,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:48,159 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:48,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-06 22:44:48,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-06 22:44:48,359 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:48,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:48,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1496622882, now seen corresponding path program 12 times [2024-11-06 22:44:48,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:48,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635014274] [2024-11-06 22:44:48,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:48,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 36 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:48,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:48,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635014274] [2024-11-06 22:44:48,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635014274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:48,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713681661] [2024-11-06 22:44:48,649 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 22:44:48,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:48,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:48,651 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:48,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-06 22:44:48,692 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-06 22:44:48,692 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:48,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-06 22:44:48,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:49,115 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 49 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:49,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:49,434 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 49 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:49,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713681661] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:49,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:49,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 51 [2024-11-06 22:44:49,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120792392] [2024-11-06 22:44:49,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:49,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-06 22:44:49,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:49,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-06 22:44:49,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2092, Unknown=0, NotChecked=0, Total=2550 [2024-11-06 22:44:49,436 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 51 states, 51 states have (on average 1.9803921568627452) internal successors, (101), 51 states have internal predecessors, (101), 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) [2024-11-06 22:44:49,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:49,625 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2024-11-06 22:44:49,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-06 22:44:49,625 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.9803921568627452) internal successors, (101), 51 states have internal predecessors, (101), 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 45 [2024-11-06 22:44:49,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:49,626 INFO L225 Difference]: With dead ends: 99 [2024-11-06 22:44:49,626 INFO L226 Difference]: Without dead ends: 70 [2024-11-06 22:44:49,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 52 SyntacticMatches, 9 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1631 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=485, Invalid=2271, Unknown=0, NotChecked=0, Total=2756 [2024-11-06 22:44:49,627 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:49,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 82 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:49,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-06 22:44:49,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2024-11-06 22:44:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 68 states have internal predecessors, (73), 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) [2024-11-06 22:44:49,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2024-11-06 22:44:49,631 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 45 [2024-11-06 22:44:49,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:49,631 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2024-11-06 22:44:49,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.9803921568627452) internal successors, (101), 51 states have internal predecessors, (101), 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) [2024-11-06 22:44:49,631 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2024-11-06 22:44:49,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-06 22:44:49,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:49,632 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:49,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-06 22:44:49,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-06 22:44:49,832 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:49,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:49,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1491841570, now seen corresponding path program 11 times [2024-11-06 22:44:49,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:49,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129862732] [2024-11-06 22:44:49,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:49,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:50,171 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 36 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:50,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:50,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129862732] [2024-11-06 22:44:50,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129862732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:50,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131491667] [2024-11-06 22:44:50,172 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 22:44:50,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:50,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:50,173 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:50,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-06 22:44:50,214 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-06 22:44:50,214 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:50,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-06 22:44:50,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:50,614 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 49 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:50,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:50,906 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 49 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:50,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131491667] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:50,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:50,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 50 [2024-11-06 22:44:50,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499086597] [2024-11-06 22:44:50,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:50,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-06 22:44:50,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:50,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-06 22:44:50,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=456, Invalid=1994, Unknown=0, NotChecked=0, Total=2450 [2024-11-06 22:44:50,907 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 50 states, 50 states have (on average 2.02) internal successors, (101), 50 states have internal predecessors, (101), 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) [2024-11-06 22:44:51,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:51,072 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2024-11-06 22:44:51,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-06 22:44:51,072 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.02) internal successors, (101), 50 states have internal predecessors, (101), 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 45 [2024-11-06 22:44:51,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:51,073 INFO L225 Difference]: With dead ends: 83 [2024-11-06 22:44:51,073 INFO L226 Difference]: Without dead ends: 76 [2024-11-06 22:44:51,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 54 SyntacticMatches, 8 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=499, Invalid=2153, Unknown=0, NotChecked=0, Total=2652 [2024-11-06 22:44:51,074 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:51,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 113 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:51,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-06 22:44:51,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 71. [2024-11-06 22:44:51,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 70 states have internal predecessors, (75), 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) [2024-11-06 22:44:51,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2024-11-06 22:44:51,078 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 45 [2024-11-06 22:44:51,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:51,078 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2024-11-06 22:44:51,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.02) internal successors, (101), 50 states have internal predecessors, (101), 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) [2024-11-06 22:44:51,078 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2024-11-06 22:44:51,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-06 22:44:51,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:51,078 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:51,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-06 22:44:51,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-06 22:44:51,279 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:51,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:51,279 INFO L85 PathProgramCache]: Analyzing trace with hash -43311236, now seen corresponding path program 12 times [2024-11-06 22:44:51,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:51,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698246564] [2024-11-06 22:44:51,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:51,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 51 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:51,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:51,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698246564] [2024-11-06 22:44:51,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698246564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:51,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875504223] [2024-11-06 22:44:51,547 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 22:44:51,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:51,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:51,548 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:51,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-06 22:44:51,592 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-06 22:44:51,592 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:51,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-06 22:44:51,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:51,955 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:52,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875504223] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:52,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:52,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 49 [2024-11-06 22:44:52,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144212639] [2024-11-06 22:44:52,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:52,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-06 22:44:52,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:52,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-06 22:44:52,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=454, Invalid=1898, Unknown=0, NotChecked=0, Total=2352 [2024-11-06 22:44:52,240 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 49 states, 49 states have (on average 2.061224489795918) internal successors, (101), 49 states have internal predecessors, (101), 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) [2024-11-06 22:44:52,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:52,374 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions. [2024-11-06 22:44:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-06 22:44:52,374 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.061224489795918) internal successors, (101), 49 states have internal predecessors, (101), 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 47 [2024-11-06 22:44:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:52,374 INFO L225 Difference]: With dead ends: 100 [2024-11-06 22:44:52,374 INFO L226 Difference]: Without dead ends: 71 [2024-11-06 22:44:52,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 60 SyntacticMatches, 7 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1487 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=487, Invalid=2063, Unknown=0, NotChecked=0, Total=2550 [2024-11-06 22:44:52,376 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:52,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 73 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:52,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-06 22:44:52,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2024-11-06 22:44:52,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 69 states have internal predecessors, (73), 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) [2024-11-06 22:44:52,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2024-11-06 22:44:52,379 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 47 [2024-11-06 22:44:52,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:52,380 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2024-11-06 22:44:52,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.061224489795918) internal successors, (101), 49 states have internal predecessors, (101), 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) [2024-11-06 22:44:52,380 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2024-11-06 22:44:52,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-06 22:44:52,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:52,380 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:52,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-06 22:44:52,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:52,580 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:52,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:52,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1529130276, now seen corresponding path program 13 times [2024-11-06 22:44:52,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:52,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727114682] [2024-11-06 22:44:52,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:52,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:52,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:52,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727114682] [2024-11-06 22:44:52,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727114682] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:52,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739706329] [2024-11-06 22:44:52,898 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 22:44:52,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:52,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:52,900 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:52,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-06 22:44:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:52,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-06 22:44:52,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:53,275 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:53,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:53,580 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:53,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739706329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:53,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:53,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 49 [2024-11-06 22:44:53,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082184717] [2024-11-06 22:44:53,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:53,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-06 22:44:53,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:53,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-06 22:44:53,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1891, Unknown=0, NotChecked=0, Total=2352 [2024-11-06 22:44:53,581 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 49 states have internal predecessors, (103), 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) [2024-11-06 22:44:53,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:53,725 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2024-11-06 22:44:53,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-06 22:44:53,726 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 49 states have internal predecessors, (103), 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 47 [2024-11-06 22:44:53,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:53,726 INFO L225 Difference]: With dead ends: 81 [2024-11-06 22:44:53,726 INFO L226 Difference]: Without dead ends: 74 [2024-11-06 22:44:53,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=504, Invalid=2046, Unknown=0, NotChecked=0, Total=2550 [2024-11-06 22:44:53,727 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:53,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 76 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:53,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-06 22:44:53,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2024-11-06 22:44:53,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.056338028169014) internal successors, (75), 71 states have internal predecessors, (75), 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) [2024-11-06 22:44:53,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2024-11-06 22:44:53,733 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 47 [2024-11-06 22:44:53,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:53,733 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2024-11-06 22:44:53,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 49 states have internal predecessors, (103), 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) [2024-11-06 22:44:53,733 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2024-11-06 22:44:53,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-06 22:44:53,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:53,733 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:53,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-06 22:44:53,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-06 22:44:53,934 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:53,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:53,934 INFO L85 PathProgramCache]: Analyzing trace with hash -651414406, now seen corresponding path program 14 times [2024-11-06 22:44:53,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:53,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880329267] [2024-11-06 22:44:53,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:53,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:54,289 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 49 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:54,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:54,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880329267] [2024-11-06 22:44:54,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880329267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:54,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488547021] [2024-11-06 22:44:54,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:44:54,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:54,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:54,291 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:54,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-06 22:44:54,333 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:44:54,333 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:54,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-06 22:44:54,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:54,784 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 64 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:54,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:55,150 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 64 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:55,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488547021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:55,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:55,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 56 [2024-11-06 22:44:55,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343200483] [2024-11-06 22:44:55,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:55,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-06 22:44:55,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:55,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-06 22:44:55,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=2529, Unknown=0, NotChecked=0, Total=3080 [2024-11-06 22:44:55,152 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 56 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 56 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) [2024-11-06 22:44:55,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:55,375 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2024-11-06 22:44:55,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-06 22:44:55,375 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 56 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 49 [2024-11-06 22:44:55,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:55,375 INFO L225 Difference]: With dead ends: 107 [2024-11-06 22:44:55,375 INFO L226 Difference]: Without dead ends: 76 [2024-11-06 22:44:55,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 57 SyntacticMatches, 9 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1981 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=579, Invalid=2727, Unknown=0, NotChecked=0, Total=3306 [2024-11-06 22:44:55,376 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:55,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 129 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:44:55,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-06 22:44:55,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2024-11-06 22:44:55,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 74 states have internal predecessors, (79), 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) [2024-11-06 22:44:55,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2024-11-06 22:44:55,383 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 49 [2024-11-06 22:44:55,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:55,383 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2024-11-06 22:44:55,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 56 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) [2024-11-06 22:44:55,383 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2024-11-06 22:44:55,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-06 22:44:55,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:55,383 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:55,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-06 22:44:55,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:55,584 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:55,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:55,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1218145798, now seen corresponding path program 13 times [2024-11-06 22:44:55,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:55,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837607095] [2024-11-06 22:44:55,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:55,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:55,918 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 49 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:55,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:55,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837607095] [2024-11-06 22:44:55,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837607095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:55,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620941857] [2024-11-06 22:44:55,918 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 22:44:55,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:55,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:55,920 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:55,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-06 22:44:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:55,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-06 22:44:55,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:56,372 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 64 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:56,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:56,718 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 64 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:56,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620941857] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:56,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:56,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 55 [2024-11-06 22:44:56,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960892588] [2024-11-06 22:44:56,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:56,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-06 22:44:56,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:56,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-06 22:44:56,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=2420, Unknown=0, NotChecked=0, Total=2970 [2024-11-06 22:44:56,719 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 55 states, 55 states have (on average 2.018181818181818) internal successors, (111), 55 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) [2024-11-06 22:44:56,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:56,905 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2024-11-06 22:44:56,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-06 22:44:56,905 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.018181818181818) internal successors, (111), 55 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 49 [2024-11-06 22:44:56,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:56,906 INFO L225 Difference]: With dead ends: 89 [2024-11-06 22:44:56,906 INFO L226 Difference]: Without dead ends: 82 [2024-11-06 22:44:56,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 58 SyntacticMatches, 9 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1921 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=597, Invalid=2595, Unknown=0, NotChecked=0, Total=3192 [2024-11-06 22:44:56,906 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:56,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 72 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:56,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-06 22:44:56,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2024-11-06 22:44:56,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 76 states have internal predecessors, (81), 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) [2024-11-06 22:44:56,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2024-11-06 22:44:56,910 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 49 [2024-11-06 22:44:56,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:56,911 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2024-11-06 22:44:56,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.018181818181818) internal successors, (111), 55 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) [2024-11-06 22:44:56,911 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2024-11-06 22:44:56,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-06 22:44:56,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:56,911 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:56,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-06 22:44:57,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-06 22:44:57,112 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:57,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:57,112 INFO L85 PathProgramCache]: Analyzing trace with hash 985320600, now seen corresponding path program 14 times [2024-11-06 22:44:57,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:57,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878171205] [2024-11-06 22:44:57,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:57,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 66 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:57,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:57,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878171205] [2024-11-06 22:44:57,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878171205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:57,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922450365] [2024-11-06 22:44:57,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:44:57,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:57,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:57,443 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:57,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-06 22:44:57,486 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:44:57,486 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:57,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-06 22:44:57,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:57,916 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:57,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:58,245 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:58,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922450365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:58,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:58,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 54 [2024-11-06 22:44:58,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787979757] [2024-11-06 22:44:58,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:58,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-06 22:44:58,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:58,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-06 22:44:58,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=548, Invalid=2314, Unknown=0, NotChecked=0, Total=2862 [2024-11-06 22:44:58,246 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 54 states, 54 states have (on average 2.0555555555555554) internal successors, (111), 54 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) [2024-11-06 22:44:58,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:44:58,448 INFO L93 Difference]: Finished difference Result 108 states and 112 transitions. [2024-11-06 22:44:58,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-06 22:44:58,449 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.0555555555555554) internal successors, (111), 54 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 51 [2024-11-06 22:44:58,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:44:58,449 INFO L225 Difference]: With dead ends: 108 [2024-11-06 22:44:58,449 INFO L226 Difference]: Without dead ends: 77 [2024-11-06 22:44:58,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 63 SyntacticMatches, 9 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1879 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=583, Invalid=2497, Unknown=0, NotChecked=0, Total=3080 [2024-11-06 22:44:58,450 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:44:58,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:44:58,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-06 22:44:58,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2024-11-06 22:44:58,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0533333333333332) internal successors, (79), 75 states have internal predecessors, (79), 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) [2024-11-06 22:44:58,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2024-11-06 22:44:58,455 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 51 [2024-11-06 22:44:58,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:44:58,455 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2024-11-06 22:44:58,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.0555555555555554) internal successors, (111), 54 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) [2024-11-06 22:44:58,455 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2024-11-06 22:44:58,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-06 22:44:58,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:44:58,455 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:44:58,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-06 22:44:58,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:58,657 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:44:58,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:44:58,657 INFO L85 PathProgramCache]: Analyzing trace with hash -91029640, now seen corresponding path program 15 times [2024-11-06 22:44:58,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:44:58,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216631704] [2024-11-06 22:44:58,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:44:58,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:44:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:44:59,051 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 49 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:59,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:44:59,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216631704] [2024-11-06 22:44:59,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216631704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:44:59,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409625309] [2024-11-06 22:44:59,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:44:59,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:44:59,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:44:59,056 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:44:59,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-06 22:44:59,102 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-06 22:44:59,102 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:44:59,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-06 22:44:59,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:44:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:59,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:44:59,870 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:44:59,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409625309] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:44:59,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:44:59,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 54 [2024-11-06 22:44:59,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444488546] [2024-11-06 22:44:59,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:44:59,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-06 22:44:59,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:44:59,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-06 22:44:59,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=2306, Unknown=0, NotChecked=0, Total=2862 [2024-11-06 22:44:59,871 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 54 states, 54 states have (on average 2.0925925925925926) internal successors, (113), 54 states have internal predecessors, (113), 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) [2024-11-06 22:45:00,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:00,024 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2024-11-06 22:45:00,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-06 22:45:00,025 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.0925925925925926) internal successors, (113), 54 states have internal predecessors, (113), 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 51 [2024-11-06 22:45:00,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:00,025 INFO L225 Difference]: With dead ends: 87 [2024-11-06 22:45:00,025 INFO L226 Difference]: Without dead ends: 80 [2024-11-06 22:45:00,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 63 SyntacticMatches, 9 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=603, Invalid=2477, Unknown=0, NotChecked=0, Total=3080 [2024-11-06 22:45:00,026 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:00,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 103 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:45:00,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-06 22:45:00,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2024-11-06 22:45:00,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.051948051948052) internal successors, (81), 77 states have internal predecessors, (81), 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) [2024-11-06 22:45:00,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2024-11-06 22:45:00,031 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 51 [2024-11-06 22:45:00,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:00,031 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2024-11-06 22:45:00,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.0925925925925926) internal successors, (113), 54 states have internal predecessors, (113), 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) [2024-11-06 22:45:00,031 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2024-11-06 22:45:00,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-06 22:45:00,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:00,032 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:00,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-06 22:45:00,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:00,232 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:00,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:00,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1616172522, now seen corresponding path program 16 times [2024-11-06 22:45:00,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:00,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956076728] [2024-11-06 22:45:00,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:00,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:00,645 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 64 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:00,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:00,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956076728] [2024-11-06 22:45:00,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956076728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:00,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695296400] [2024-11-06 22:45:00,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 22:45:00,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:00,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:00,647 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:00,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-06 22:45:00,691 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 22:45:00,692 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:00,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-06 22:45:00,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 81 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:01,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 81 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:01,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695296400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:01,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:01,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 61 [2024-11-06 22:45:01,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594922327] [2024-11-06 22:45:01,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:01,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-06 22:45:01,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:01,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-06 22:45:01,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=3007, Unknown=0, NotChecked=0, Total=3660 [2024-11-06 22:45:01,649 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand has 61 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 61 states have internal predecessors, (121), 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) [2024-11-06 22:45:01,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:01,854 INFO L93 Difference]: Finished difference Result 115 states and 121 transitions. [2024-11-06 22:45:01,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-06 22:45:01,854 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 61 states have internal predecessors, (121), 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 53 [2024-11-06 22:45:01,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:01,855 INFO L225 Difference]: With dead ends: 115 [2024-11-06 22:45:01,855 INFO L226 Difference]: Without dead ends: 82 [2024-11-06 22:45:01,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 60 SyntacticMatches, 11 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2428 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=682, Invalid=3224, Unknown=0, NotChecked=0, Total=3906 [2024-11-06 22:45:01,855 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:01,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 117 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:45:01,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-06 22:45:01,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2024-11-06 22:45:01,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.0625) internal successors, (85), 80 states have internal predecessors, (85), 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) [2024-11-06 22:45:01,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2024-11-06 22:45:01,861 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 53 [2024-11-06 22:45:01,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:01,861 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2024-11-06 22:45:01,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 61 states have internal predecessors, (121), 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) [2024-11-06 22:45:01,861 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2024-11-06 22:45:01,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-06 22:45:01,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:01,861 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:01,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-06 22:45:02,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-06 22:45:02,062 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:02,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:02,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1650798570, now seen corresponding path program 15 times [2024-11-06 22:45:02,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:02,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490253271] [2024-11-06 22:45:02,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:02,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:02,450 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 64 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:02,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:02,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490253271] [2024-11-06 22:45:02,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490253271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:02,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925906837] [2024-11-06 22:45:02,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:45:02,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:02,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:02,452 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:02,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-06 22:45:02,500 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-06 22:45:02,501 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:02,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-06 22:45:02,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 81 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:02,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 81 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:03,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925906837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:03,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:03,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 60 [2024-11-06 22:45:03,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497319402] [2024-11-06 22:45:03,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:03,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-06 22:45:03,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:03,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-06 22:45:03,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=2887, Unknown=0, NotChecked=0, Total=3540 [2024-11-06 22:45:03,374 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 60 states, 60 states have (on average 2.0166666666666666) internal successors, (121), 60 states have internal predecessors, (121), 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) [2024-11-06 22:45:03,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:03,544 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2024-11-06 22:45:03,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-06 22:45:03,545 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.0166666666666666) internal successors, (121), 60 states have internal predecessors, (121), 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 53 [2024-11-06 22:45:03,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:03,545 INFO L225 Difference]: With dead ends: 95 [2024-11-06 22:45:03,545 INFO L226 Difference]: Without dead ends: 88 [2024-11-06 22:45:03,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 62 SyntacticMatches, 10 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2329 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=704, Invalid=3078, Unknown=0, NotChecked=0, Total=3782 [2024-11-06 22:45:03,546 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:03,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 86 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:45:03,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-06 22:45:03,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2024-11-06 22:45:03,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 82 states have internal predecessors, (87), 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) [2024-11-06 22:45:03,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2024-11-06 22:45:03,551 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 53 [2024-11-06 22:45:03,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:03,551 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2024-11-06 22:45:03,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.0166666666666666) internal successors, (121), 60 states have internal predecessors, (121), 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) [2024-11-06 22:45:03,551 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2024-11-06 22:45:03,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-06 22:45:03,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:03,552 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:03,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-06 22:45:03,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-06 22:45:03,752 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:03,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:03,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1817834420, now seen corresponding path program 16 times [2024-11-06 22:45:03,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:03,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482821306] [2024-11-06 22:45:03,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:03,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 83 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:04,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:04,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482821306] [2024-11-06 22:45:04,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482821306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:04,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640571902] [2024-11-06 22:45:04,079 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 22:45:04,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:04,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:04,081 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:04,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-06 22:45:04,129 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 22:45:04,129 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:04,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-06 22:45:04,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:04,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:05,027 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:05,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640571902] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:05,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:05,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 59 [2024-11-06 22:45:05,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340842299] [2024-11-06 22:45:05,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:05,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-06 22:45:05,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:05,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-06 22:45:05,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=2771, Unknown=0, NotChecked=0, Total=3422 [2024-11-06 22:45:05,029 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 59 states, 59 states have (on average 2.0508474576271185) internal successors, (121), 59 states have internal predecessors, (121), 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) [2024-11-06 22:45:05,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:05,233 INFO L93 Difference]: Finished difference Result 116 states and 120 transitions. [2024-11-06 22:45:05,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-06 22:45:05,233 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.0508474576271185) internal successors, (121), 59 states have internal predecessors, (121), 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 55 [2024-11-06 22:45:05,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:05,234 INFO L225 Difference]: With dead ends: 116 [2024-11-06 22:45:05,234 INFO L226 Difference]: Without dead ends: 83 [2024-11-06 22:45:05,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 67 SyntacticMatches, 10 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2283 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=688, Invalid=2972, Unknown=0, NotChecked=0, Total=3660 [2024-11-06 22:45:05,235 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:05,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 113 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:45:05,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-06 22:45:05,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2024-11-06 22:45:05,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0493827160493827) internal successors, (85), 81 states have internal predecessors, (85), 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) [2024-11-06 22:45:05,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2024-11-06 22:45:05,240 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 55 [2024-11-06 22:45:05,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:05,240 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2024-11-06 22:45:05,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.0508474576271185) internal successors, (121), 59 states have internal predecessors, (121), 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) [2024-11-06 22:45:05,240 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2024-11-06 22:45:05,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-06 22:45:05,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:05,241 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:05,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-06 22:45:05,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-06 22:45:05,441 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:05,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:05,441 INFO L85 PathProgramCache]: Analyzing trace with hash -895990252, now seen corresponding path program 17 times [2024-11-06 22:45:05,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:05,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088526415] [2024-11-06 22:45:05,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:05,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 64 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:05,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:05,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088526415] [2024-11-06 22:45:05,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088526415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:05,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559836370] [2024-11-06 22:45:05,828 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 22:45:05,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:05,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:05,829 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:05,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-06 22:45:05,875 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-06 22:45:05,875 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:05,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-06 22:45:05,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:06,322 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:06,711 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:06,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559836370] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:06,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:06,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 59 [2024-11-06 22:45:06,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854814800] [2024-11-06 22:45:06,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:06,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-06 22:45:06,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:06,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-06 22:45:06,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=660, Invalid=2762, Unknown=0, NotChecked=0, Total=3422 [2024-11-06 22:45:06,712 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 59 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) [2024-11-06 22:45:06,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:06,921 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2024-11-06 22:45:06,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-06 22:45:06,922 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 59 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 55 [2024-11-06 22:45:06,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:06,922 INFO L225 Difference]: With dead ends: 93 [2024-11-06 22:45:06,922 INFO L226 Difference]: Without dead ends: 86 [2024-11-06 22:45:06,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 67 SyntacticMatches, 10 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2308 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=711, Invalid=2949, Unknown=0, NotChecked=0, Total=3660 [2024-11-06 22:45:06,922 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:06,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 138 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:45:06,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-06 22:45:06,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2024-11-06 22:45:06,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0481927710843373) internal successors, (87), 83 states have internal predecessors, (87), 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) [2024-11-06 22:45:06,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2024-11-06 22:45:06,928 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 55 [2024-11-06 22:45:06,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:06,928 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2024-11-06 22:45:06,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 59 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) [2024-11-06 22:45:06,928 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2024-11-06 22:45:06,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-06 22:45:06,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:06,928 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:06,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-06 22:45:07,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:07,129 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:07,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:07,129 INFO L85 PathProgramCache]: Analyzing trace with hash -2089207374, now seen corresponding path program 18 times [2024-11-06 22:45:07,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:07,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139542982] [2024-11-06 22:45:07,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:07,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:07,539 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 81 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:07,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:07,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139542982] [2024-11-06 22:45:07,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139542982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:07,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147007135] [2024-11-06 22:45:07,539 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 22:45:07,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:07,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:07,541 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:07,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-06 22:45:07,590 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-06 22:45:07,590 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:07,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-06 22:45:07,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:08,169 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 100 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:08,169 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 100 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:08,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147007135] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:08,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:08,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 66 [2024-11-06 22:45:08,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079776264] [2024-11-06 22:45:08,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:08,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-06 22:45:08,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:08,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-06 22:45:08,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=764, Invalid=3526, Unknown=0, NotChecked=0, Total=4290 [2024-11-06 22:45:08,643 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand has 66 states, 66 states have (on average 1.9848484848484849) internal successors, (131), 66 states have internal predecessors, (131), 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) [2024-11-06 22:45:08,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:08,913 INFO L93 Difference]: Finished difference Result 123 states and 129 transitions. [2024-11-06 22:45:08,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-06 22:45:08,914 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9848484848484849) internal successors, (131), 66 states have internal predecessors, (131), 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 57 [2024-11-06 22:45:08,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:08,914 INFO L225 Difference]: With dead ends: 123 [2024-11-06 22:45:08,914 INFO L226 Difference]: Without dead ends: 88 [2024-11-06 22:45:08,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 64 SyntacticMatches, 12 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2885 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=794, Invalid=3762, Unknown=0, NotChecked=0, Total=4556 [2024-11-06 22:45:08,915 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 7 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:08,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 149 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:45:08,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-06 22:45:08,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2024-11-06 22:45:08,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.058139534883721) internal successors, (91), 86 states have internal predecessors, (91), 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) [2024-11-06 22:45:08,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2024-11-06 22:45:08,921 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 57 [2024-11-06 22:45:08,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:08,921 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2024-11-06 22:45:08,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9848484848484849) internal successors, (131), 66 states have internal predecessors, (131), 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) [2024-11-06 22:45:08,921 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2024-11-06 22:45:08,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-06 22:45:08,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:08,921 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:08,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-06 22:45:09,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-06 22:45:09,121 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:09,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:09,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1871706062, now seen corresponding path program 17 times [2024-11-06 22:45:09,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:09,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173765590] [2024-11-06 22:45:09,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:09,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:09,544 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 81 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:09,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:09,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173765590] [2024-11-06 22:45:09,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173765590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:09,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488934028] [2024-11-06 22:45:09,544 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 22:45:09,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:09,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:09,546 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:09,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-06 22:45:09,594 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-06 22:45:09,594 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:09,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-06 22:45:09,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:10,140 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 100 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:10,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:10,590 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 100 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:10,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488934028] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:10,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:10,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 65 [2024-11-06 22:45:10,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846025643] [2024-11-06 22:45:10,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:10,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-06 22:45:10,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:10,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-06 22:45:10,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=765, Invalid=3395, Unknown=0, NotChecked=0, Total=4160 [2024-11-06 22:45:10,591 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand has 65 states, 65 states have (on average 2.0153846153846153) internal successors, (131), 65 states have internal predecessors, (131), 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) [2024-11-06 22:45:10,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:10,761 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2024-11-06 22:45:10,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-06 22:45:10,761 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.0153846153846153) internal successors, (131), 65 states have internal predecessors, (131), 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 57 [2024-11-06 22:45:10,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:10,762 INFO L225 Difference]: With dead ends: 101 [2024-11-06 22:45:10,762 INFO L226 Difference]: Without dead ends: 94 [2024-11-06 22:45:10,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 66 SyntacticMatches, 11 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2776 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=820, Invalid=3602, Unknown=0, NotChecked=0, Total=4422 [2024-11-06 22:45:10,762 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:10,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:45:10,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-06 22:45:10,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 89. [2024-11-06 22:45:10,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 88 states have internal predecessors, (93), 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) [2024-11-06 22:45:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2024-11-06 22:45:10,769 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 57 [2024-11-06 22:45:10,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:10,769 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2024-11-06 22:45:10,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.0153846153846153) internal successors, (131), 65 states have internal predecessors, (131), 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) [2024-11-06 22:45:10,769 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2024-11-06 22:45:10,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-06 22:45:10,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:10,769 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:10,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-06 22:45:10,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:10,970 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:10,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:10,970 INFO L85 PathProgramCache]: Analyzing trace with hash -20867888, now seen corresponding path program 18 times [2024-11-06 22:45:10,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:10,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398570059] [2024-11-06 22:45:10,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:10,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 102 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:11,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:11,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398570059] [2024-11-06 22:45:11,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398570059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:11,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147562962] [2024-11-06 22:45:11,347 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 22:45:11,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:11,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:11,349 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:11,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-06 22:45:11,403 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-06 22:45:11,403 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:11,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-06 22:45:11,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:11,927 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:11,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:12,350 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:12,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147562962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:12,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:12,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 64 [2024-11-06 22:45:12,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21922787] [2024-11-06 22:45:12,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:12,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-06 22:45:12,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:12,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-06 22:45:12,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=3269, Unknown=0, NotChecked=0, Total=4032 [2024-11-06 22:45:12,351 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand has 64 states, 64 states have (on average 2.046875) internal successors, (131), 64 states have internal predecessors, (131), 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) [2024-11-06 22:45:12,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:12,531 INFO L93 Difference]: Finished difference Result 124 states and 128 transitions. [2024-11-06 22:45:12,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-06 22:45:12,531 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.046875) internal successors, (131), 64 states have internal predecessors, (131), 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 59 [2024-11-06 22:45:12,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:12,531 INFO L225 Difference]: With dead ends: 124 [2024-11-06 22:45:12,531 INFO L226 Difference]: Without dead ends: 89 [2024-11-06 22:45:12,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 72 SyntacticMatches, 10 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2690 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=802, Invalid=3488, Unknown=0, NotChecked=0, Total=4290 [2024-11-06 22:45:12,532 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:12,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 105 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:45:12,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-06 22:45:12,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2024-11-06 22:45:12,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 87 states have internal predecessors, (91), 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) [2024-11-06 22:45:12,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2024-11-06 22:45:12,539 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 59 [2024-11-06 22:45:12,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:12,539 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 91 transitions. [2024-11-06 22:45:12,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.046875) internal successors, (131), 64 states have internal predecessors, (131), 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) [2024-11-06 22:45:12,539 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions. [2024-11-06 22:45:12,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-06 22:45:12,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:12,539 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:12,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-06 22:45:12,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,37 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:12,740 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:12,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:12,740 INFO L85 PathProgramCache]: Analyzing trace with hash -94624080, now seen corresponding path program 19 times [2024-11-06 22:45:12,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:12,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476347078] [2024-11-06 22:45:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:12,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 81 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:13,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:13,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476347078] [2024-11-06 22:45:13,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476347078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:13,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817851606] [2024-11-06 22:45:13,159 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 22:45:13,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:13,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:13,160 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:13,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-06 22:45:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:13,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-06 22:45:13,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:13,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:14,150 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:14,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817851606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:14,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:14,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 64 [2024-11-06 22:45:14,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819538619] [2024-11-06 22:45:14,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:14,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-06 22:45:14,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:14,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-06 22:45:14,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=773, Invalid=3259, Unknown=0, NotChecked=0, Total=4032 [2024-11-06 22:45:14,151 INFO L87 Difference]: Start difference. First operand 88 states and 91 transitions. Second operand has 64 states, 64 states have (on average 2.078125) internal successors, (133), 64 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) [2024-11-06 22:45:14,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:14,310 INFO L93 Difference]: Finished difference Result 99 states and 102 transitions. [2024-11-06 22:45:14,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-06 22:45:14,311 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.078125) internal successors, (133), 64 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) Word has length 59 [2024-11-06 22:45:14,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:14,311 INFO L225 Difference]: With dead ends: 99 [2024-11-06 22:45:14,311 INFO L226 Difference]: Without dead ends: 92 [2024-11-06 22:45:14,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 71 SyntacticMatches, 11 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2753 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=828, Invalid=3462, Unknown=0, NotChecked=0, Total=4290 [2024-11-06 22:45:14,312 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 14 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:14,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 88 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:45:14,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-06 22:45:14,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2024-11-06 22:45:14,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0449438202247192) internal successors, (93), 89 states have internal predecessors, (93), 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) [2024-11-06 22:45:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2024-11-06 22:45:14,324 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 59 [2024-11-06 22:45:14,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:14,325 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2024-11-06 22:45:14,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.078125) internal successors, (133), 64 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) [2024-11-06 22:45:14,325 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2024-11-06 22:45:14,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-06 22:45:14,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:14,325 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:14,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-06 22:45:14,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,38 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:14,526 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:14,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:14,526 INFO L85 PathProgramCache]: Analyzing trace with hash -775462066, now seen corresponding path program 20 times [2024-11-06 22:45:14,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:14,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571546752] [2024-11-06 22:45:14,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:14,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 100 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:14,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:14,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571546752] [2024-11-06 22:45:14,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571546752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:14,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009015898] [2024-11-06 22:45:14,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:45:14,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:14,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:14,951 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:14,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-06 22:45:14,999 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:45:15,000 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:15,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-06 22:45:15,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 121 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:15,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:16,188 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 121 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:16,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009015898] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:16,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:16,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 71 [2024-11-06 22:45:16,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673958060] [2024-11-06 22:45:16,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:16,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-06 22:45:16,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:16,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-06 22:45:16,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=884, Invalid=4086, Unknown=0, NotChecked=0, Total=4970 [2024-11-06 22:45:16,189 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 71 states, 71 states have (on average 1.9859154929577465) internal successors, (141), 71 states have internal predecessors, (141), 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) [2024-11-06 22:45:16,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:16,424 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2024-11-06 22:45:16,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-06 22:45:16,425 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.9859154929577465) internal successors, (141), 71 states have internal predecessors, (141), 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 61 [2024-11-06 22:45:16,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:16,425 INFO L225 Difference]: With dead ends: 131 [2024-11-06 22:45:16,425 INFO L226 Difference]: Without dead ends: 94 [2024-11-06 22:45:16,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 68 SyntacticMatches, 13 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3381 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=915, Invalid=4341, Unknown=0, NotChecked=0, Total=5256 [2024-11-06 22:45:16,426 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:16,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:45:16,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-06 22:45:16,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2024-11-06 22:45:16,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 92 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:45:16,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2024-11-06 22:45:16,433 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 61 [2024-11-06 22:45:16,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:16,433 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2024-11-06 22:45:16,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.9859154929577465) internal successors, (141), 71 states have internal predecessors, (141), 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) [2024-11-06 22:45:16,434 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2024-11-06 22:45:16,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-06 22:45:16,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:16,434 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:16,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-06 22:45:16,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-06 22:45:16,634 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:16,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:16,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1218263630, now seen corresponding path program 19 times [2024-11-06 22:45:16,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:16,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710772626] [2024-11-06 22:45:16,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:16,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:17,135 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 100 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:17,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:17,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710772626] [2024-11-06 22:45:17,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710772626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:17,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759054488] [2024-11-06 22:45:17,135 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 22:45:17,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:17,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:17,137 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:17,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-06 22:45:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:17,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-06 22:45:17,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:17,807 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 121 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:17,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 121 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:18,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759054488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:18,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:18,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 70 [2024-11-06 22:45:18,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925071287] [2024-11-06 22:45:18,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:18,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-06 22:45:18,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:18,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-06 22:45:18,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=886, Invalid=3944, Unknown=0, NotChecked=0, Total=4830 [2024-11-06 22:45:18,307 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand has 70 states, 70 states have (on average 2.0142857142857142) internal successors, (141), 70 states have internal predecessors, (141), 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) [2024-11-06 22:45:18,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:18,507 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2024-11-06 22:45:18,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-06 22:45:18,507 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.0142857142857142) internal successors, (141), 70 states have internal predecessors, (141), 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 61 [2024-11-06 22:45:18,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:18,507 INFO L225 Difference]: With dead ends: 107 [2024-11-06 22:45:18,508 INFO L226 Difference]: Without dead ends: 100 [2024-11-06 22:45:18,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 70 SyntacticMatches, 12 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3262 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=945, Invalid=4167, Unknown=0, NotChecked=0, Total=5112 [2024-11-06 22:45:18,508 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:18,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 90 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:45:18,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-06 22:45:18,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 95. [2024-11-06 22:45:18,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.053191489361702) internal successors, (99), 94 states have internal predecessors, (99), 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) [2024-11-06 22:45:18,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2024-11-06 22:45:18,515 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 61 [2024-11-06 22:45:18,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:18,515 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2024-11-06 22:45:18,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.0142857142857142) internal successors, (141), 70 states have internal predecessors, (141), 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) [2024-11-06 22:45:18,515 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2024-11-06 22:45:18,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-06 22:45:18,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:18,515 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:18,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-06 22:45:18,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,40 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:18,716 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:18,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:18,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1617604588, now seen corresponding path program 20 times [2024-11-06 22:45:18,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:18,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882812375] [2024-11-06 22:45:18,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:18,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 123 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:19,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:19,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882812375] [2024-11-06 22:45:19,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882812375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:19,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846167714] [2024-11-06 22:45:19,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:45:19,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:19,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:19,129 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:19,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-06 22:45:19,178 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:45:19,178 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:19,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-06 22:45:19,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:19,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:20,297 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:20,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846167714] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:20,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:20,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 69 [2024-11-06 22:45:20,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588576824] [2024-11-06 22:45:20,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:20,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-06 22:45:20,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:20,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-06 22:45:20,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=884, Invalid=3808, Unknown=0, NotChecked=0, Total=4692 [2024-11-06 22:45:20,298 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand has 69 states, 69 states have (on average 2.0434782608695654) internal successors, (141), 69 states have internal predecessors, (141), 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) [2024-11-06 22:45:20,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:20,531 INFO L93 Difference]: Finished difference Result 132 states and 136 transitions. [2024-11-06 22:45:20,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-06 22:45:20,532 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.0434782608695654) internal successors, (141), 69 states have internal predecessors, (141), 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 63 [2024-11-06 22:45:20,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:20,532 INFO L225 Difference]: With dead ends: 132 [2024-11-06 22:45:20,532 INFO L226 Difference]: Without dead ends: 95 [2024-11-06 22:45:20,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 75 SyntacticMatches, 12 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3208 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=925, Invalid=4045, Unknown=0, NotChecked=0, Total=4970 [2024-11-06 22:45:20,533 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:20,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 107 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:45:20,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-06 22:45:20,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2024-11-06 22:45:20,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.043010752688172) internal successors, (97), 93 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:45:20,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2024-11-06 22:45:20,541 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 63 [2024-11-06 22:45:20,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:20,541 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2024-11-06 22:45:20,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.0434782608695654) internal successors, (141), 69 states have internal predecessors, (141), 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) [2024-11-06 22:45:20,541 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2024-11-06 22:45:20,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-06 22:45:20,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:20,541 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:20,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-06 22:45:20,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-06 22:45:20,742 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:20,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:20,742 INFO L85 PathProgramCache]: Analyzing trace with hash 323985740, now seen corresponding path program 21 times [2024-11-06 22:45:20,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:20,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219900811] [2024-11-06 22:45:20,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:20,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 100 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:21,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:21,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219900811] [2024-11-06 22:45:21,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219900811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:21,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748221762] [2024-11-06 22:45:21,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:45:21,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:21,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:21,208 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:21,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-06 22:45:21,265 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-06 22:45:21,265 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:21,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-06 22:45:21,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:21,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:22,326 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:22,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748221762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:22,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:22,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 69 [2024-11-06 22:45:22,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386094257] [2024-11-06 22:45:22,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:22,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-06 22:45:22,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:22,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-06 22:45:22,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=895, Invalid=3797, Unknown=0, NotChecked=0, Total=4692 [2024-11-06 22:45:22,328 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand has 69 states, 69 states have (on average 2.072463768115942) internal successors, (143), 69 states have internal predecessors, (143), 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) [2024-11-06 22:45:22,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:22,536 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2024-11-06 22:45:22,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-06 22:45:22,537 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.072463768115942) internal successors, (143), 69 states have internal predecessors, (143), 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 63 [2024-11-06 22:45:22,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:22,537 INFO L225 Difference]: With dead ends: 105 [2024-11-06 22:45:22,537 INFO L226 Difference]: Without dead ends: 98 [2024-11-06 22:45:22,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 75 SyntacticMatches, 12 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3237 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=954, Invalid=4016, Unknown=0, NotChecked=0, Total=4970 [2024-11-06 22:45:22,538 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:22,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 113 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:45:22,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-06 22:45:22,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2024-11-06 22:45:22,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0421052631578946) internal successors, (99), 95 states have internal predecessors, (99), 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) [2024-11-06 22:45:22,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 99 transitions. [2024-11-06 22:45:22,544 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 99 transitions. Word has length 63 [2024-11-06 22:45:22,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:22,545 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 99 transitions. [2024-11-06 22:45:22,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.072463768115942) internal successors, (143), 69 states have internal predecessors, (143), 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) [2024-11-06 22:45:22,545 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 99 transitions. [2024-11-06 22:45:22,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-06 22:45:22,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:22,545 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:22,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-06 22:45:22,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-06 22:45:22,745 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:22,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:22,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2076616426, now seen corresponding path program 22 times [2024-11-06 22:45:22,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:22,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653591473] [2024-11-06 22:45:22,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:22,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:23,212 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 121 proven. 167 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:23,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:23,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653591473] [2024-11-06 22:45:23,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653591473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:23,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276235018] [2024-11-06 22:45:23,212 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 22:45:23,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:23,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:23,214 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:23,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-06 22:45:23,264 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 22:45:23,264 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:23,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-06 22:45:23,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:24,027 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 144 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:24,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 144 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:24,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276235018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:24,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:24,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 76 [2024-11-06 22:45:24,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821901127] [2024-11-06 22:45:24,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:24,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-06 22:45:24,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:24,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-06 22:45:24,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1013, Invalid=4687, Unknown=0, NotChecked=0, Total=5700 [2024-11-06 22:45:24,646 INFO L87 Difference]: Start difference. First operand 96 states and 99 transitions. Second operand has 76 states, 76 states have (on average 1.986842105263158) internal successors, (151), 76 states have internal predecessors, (151), 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) [2024-11-06 22:45:24,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:24,915 INFO L93 Difference]: Finished difference Result 139 states and 145 transitions. [2024-11-06 22:45:24,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-06 22:45:24,916 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.986842105263158) internal successors, (151), 76 states have internal predecessors, (151), 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 65 [2024-11-06 22:45:24,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:24,916 INFO L225 Difference]: With dead ends: 139 [2024-11-06 22:45:24,916 INFO L226 Difference]: Without dead ends: 100 [2024-11-06 22:45:24,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 73 SyntacticMatches, 13 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3875 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1045, Invalid=4961, Unknown=0, NotChecked=0, Total=6006 [2024-11-06 22:45:24,917 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:24,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 127 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:45:24,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-06 22:45:24,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2024-11-06 22:45:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 98 states have internal predecessors, (103), 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) [2024-11-06 22:45:24,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2024-11-06 22:45:24,925 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 65 [2024-11-06 22:45:24,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:24,925 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2024-11-06 22:45:24,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.986842105263158) internal successors, (151), 76 states have internal predecessors, (151), 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) [2024-11-06 22:45:24,925 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2024-11-06 22:45:24,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-06 22:45:24,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:24,925 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:24,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-06 22:45:25,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-06 22:45:25,126 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:25,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:25,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1624991338, now seen corresponding path program 21 times [2024-11-06 22:45:25,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:25,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148387114] [2024-11-06 22:45:25,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:25,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 121 proven. 167 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:25,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:25,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148387114] [2024-11-06 22:45:25,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148387114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:25,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930109128] [2024-11-06 22:45:25,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:45:25,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:25,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:25,672 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:25,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-06 22:45:25,726 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-06 22:45:25,726 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:25,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-06 22:45:25,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:26,394 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 144 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:26,394 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 144 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:26,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930109128] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:26,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:26,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 75 [2024-11-06 22:45:26,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784882650] [2024-11-06 22:45:26,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:26,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-06 22:45:26,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:26,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-06 22:45:26,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1016, Invalid=4534, Unknown=0, NotChecked=0, Total=5550 [2024-11-06 22:45:26,955 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand has 75 states, 75 states have (on average 2.013333333333333) internal successors, (151), 75 states have internal predecessors, (151), 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) [2024-11-06 22:45:27,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:27,141 INFO L93 Difference]: Finished difference Result 113 states and 118 transitions. [2024-11-06 22:45:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-06 22:45:27,141 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.013333333333333) internal successors, (151), 75 states have internal predecessors, (151), 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 65 [2024-11-06 22:45:27,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:27,142 INFO L225 Difference]: With dead ends: 113 [2024-11-06 22:45:27,142 INFO L226 Difference]: Without dead ends: 106 [2024-11-06 22:45:27,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 74 SyntacticMatches, 13 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3787 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1079, Invalid=4773, Unknown=0, NotChecked=0, Total=5852 [2024-11-06 22:45:27,142 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:27,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 85 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:45:27,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-06 22:45:27,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2024-11-06 22:45:27,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.05) internal successors, (105), 100 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) [2024-11-06 22:45:27,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2024-11-06 22:45:27,150 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 65 [2024-11-06 22:45:27,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:27,150 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2024-11-06 22:45:27,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.013333333333333) internal successors, (151), 75 states have internal predecessors, (151), 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) [2024-11-06 22:45:27,150 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2024-11-06 22:45:27,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-06 22:45:27,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:27,151 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:27,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-06 22:45:27,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,44 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:27,351 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:27,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:27,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1640908040, now seen corresponding path program 22 times [2024-11-06 22:45:27,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:27,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570785399] [2024-11-06 22:45:27,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:27,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 146 proven. 167 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:27,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:27,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570785399] [2024-11-06 22:45:27,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570785399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:27,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712197539] [2024-11-06 22:45:27,817 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 22:45:27,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:27,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:27,819 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:27,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-06 22:45:27,869 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 22:45:27,870 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:27,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-06 22:45:27,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:28,524 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 169 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:28,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:29,068 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 169 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:29,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712197539] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:29,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:29,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 74 [2024-11-06 22:45:29,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919017318] [2024-11-06 22:45:29,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:29,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-06 22:45:29,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:29,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-06 22:45:29,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1014, Invalid=4388, Unknown=0, NotChecked=0, Total=5402 [2024-11-06 22:45:29,070 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 74 states, 74 states have (on average 2.0405405405405403) internal successors, (151), 74 states have internal predecessors, (151), 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) [2024-11-06 22:45:29,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:29,319 INFO L93 Difference]: Finished difference Result 140 states and 144 transitions. [2024-11-06 22:45:29,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-06 22:45:29,319 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.0405405405405403) internal successors, (151), 74 states have internal predecessors, (151), 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 67 [2024-11-06 22:45:29,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:29,320 INFO L225 Difference]: With dead ends: 140 [2024-11-06 22:45:29,320 INFO L226 Difference]: Without dead ends: 101 [2024-11-06 22:45:29,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 80 SyntacticMatches, 12 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3687 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1057, Invalid=4643, Unknown=0, NotChecked=0, Total=5700 [2024-11-06 22:45:29,320 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:29,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 122 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:45:29,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-06 22:45:29,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2024-11-06 22:45:29,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 99 states have internal predecessors, (103), 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) [2024-11-06 22:45:29,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2024-11-06 22:45:29,328 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 67 [2024-11-06 22:45:29,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:29,328 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2024-11-06 22:45:29,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.0405405405405403) internal successors, (151), 74 states have internal predecessors, (151), 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) [2024-11-06 22:45:29,328 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2024-11-06 22:45:29,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-06 22:45:29,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:29,328 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:29,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-06 22:45:29,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-06 22:45:29,528 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:29,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:29,529 INFO L85 PathProgramCache]: Analyzing trace with hash 585348584, now seen corresponding path program 23 times [2024-11-06 22:45:29,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:29,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963706507] [2024-11-06 22:45:29,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:29,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:30,171 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 121 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:30,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:30,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963706507] [2024-11-06 22:45:30,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963706507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:30,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115567674] [2024-11-06 22:45:30,171 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 22:45:30,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:30,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:30,173 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:30,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-06 22:45:30,229 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-06 22:45:30,229 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:30,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-06 22:45:30,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:30,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:31,484 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 169 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:31,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115567674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:31,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:31,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 74 [2024-11-06 22:45:31,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172035471] [2024-11-06 22:45:31,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:31,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-06 22:45:31,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:31,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-06 22:45:31,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1026, Invalid=4376, Unknown=0, NotChecked=0, Total=5402 [2024-11-06 22:45:31,485 INFO L87 Difference]: Start difference. First operand 100 states and 103 transitions. Second operand has 74 states, 74 states have (on average 2.0675675675675675) internal successors, (153), 74 states have internal predecessors, (153), 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) [2024-11-06 22:45:31,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:31,705 INFO L93 Difference]: Finished difference Result 111 states and 114 transitions. [2024-11-06 22:45:31,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-06 22:45:31,705 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.0675675675675675) internal successors, (153), 74 states have internal predecessors, (153), 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 67 [2024-11-06 22:45:31,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:31,706 INFO L225 Difference]: With dead ends: 111 [2024-11-06 22:45:31,706 INFO L226 Difference]: Without dead ends: 104 [2024-11-06 22:45:31,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 79 SyntacticMatches, 13 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3760 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1089, Invalid=4611, Unknown=0, NotChecked=0, Total=5700 [2024-11-06 22:45:31,706 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:31,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 126 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:45:31,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-06 22:45:31,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2024-11-06 22:45:31,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0396039603960396) internal successors, (105), 101 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) [2024-11-06 22:45:31,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 105 transitions. [2024-11-06 22:45:31,714 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 105 transitions. Word has length 67 [2024-11-06 22:45:31,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:31,714 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 105 transitions. [2024-11-06 22:45:31,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.0675675675675675) internal successors, (153), 74 states have internal predecessors, (153), 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) [2024-11-06 22:45:31,714 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 105 transitions. [2024-11-06 22:45:31,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-06 22:45:31,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:31,715 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:31,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-11-06 22:45:31,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,46 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:31,919 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:31,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:31,919 INFO L85 PathProgramCache]: Analyzing trace with hash -156760954, now seen corresponding path program 24 times [2024-11-06 22:45:31,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:31,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132386482] [2024-11-06 22:45:31,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:31,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 144 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:32,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:32,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132386482] [2024-11-06 22:45:32,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132386482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:32,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193305761] [2024-11-06 22:45:32,439 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 22:45:32,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:32,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:32,441 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:32,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-06 22:45:32,499 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-06 22:45:32,499 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:32,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-06 22:45:32,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:33,306 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 169 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:33,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:33,957 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 169 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:33,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193305761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:33,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:33,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 81 [2024-11-06 22:45:33,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128536352] [2024-11-06 22:45:33,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:33,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-06 22:45:33,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:33,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-06 22:45:33,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1151, Invalid=5329, Unknown=0, NotChecked=0, Total=6480 [2024-11-06 22:45:33,958 INFO L87 Difference]: Start difference. First operand 102 states and 105 transitions. Second operand has 81 states, 81 states have (on average 1.9876543209876543) internal successors, (161), 81 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) [2024-11-06 22:45:34,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:34,224 INFO L93 Difference]: Finished difference Result 147 states and 153 transitions. [2024-11-06 22:45:34,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-06 22:45:34,224 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.9876543209876543) internal successors, (161), 81 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) Word has length 69 [2024-11-06 22:45:34,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:34,225 INFO L225 Difference]: With dead ends: 147 [2024-11-06 22:45:34,225 INFO L226 Difference]: Without dead ends: 106 [2024-11-06 22:45:34,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 76 SyntacticMatches, 15 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4490 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1184, Invalid=5622, Unknown=0, NotChecked=0, Total=6806 [2024-11-06 22:45:34,225 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:34,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 120 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:45:34,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-06 22:45:34,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2024-11-06 22:45:34,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 104 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) [2024-11-06 22:45:34,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2024-11-06 22:45:34,233 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 69 [2024-11-06 22:45:34,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:34,233 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2024-11-06 22:45:34,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 1.9876543209876543) internal successors, (161), 81 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) [2024-11-06 22:45:34,233 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2024-11-06 22:45:34,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-06 22:45:34,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:34,233 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:34,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-11-06 22:45:34,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-11-06 22:45:34,434 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:34,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:34,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1243378554, now seen corresponding path program 23 times [2024-11-06 22:45:34,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:34,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584755067] [2024-11-06 22:45:34,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:34,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:35,017 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 144 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:35,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:35,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584755067] [2024-11-06 22:45:35,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584755067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:35,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861378543] [2024-11-06 22:45:35,017 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 22:45:35,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:35,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:35,019 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:35,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-06 22:45:35,074 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-06 22:45:35,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:35,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-06 22:45:35,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 169 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:35,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:36,415 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 169 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:36,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861378543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:36,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:36,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 80 [2024-11-06 22:45:36,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085043501] [2024-11-06 22:45:36,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:36,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-11-06 22:45:36,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:36,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-11-06 22:45:36,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=5165, Unknown=0, NotChecked=0, Total=6320 [2024-11-06 22:45:36,417 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand has 80 states, 80 states have (on average 2.0125) internal successors, (161), 80 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) [2024-11-06 22:45:36,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:36,616 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2024-11-06 22:45:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-06 22:45:36,616 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.0125) internal successors, (161), 80 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) Word has length 69 [2024-11-06 22:45:36,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:36,617 INFO L225 Difference]: With dead ends: 119 [2024-11-06 22:45:36,617 INFO L226 Difference]: Without dead ends: 112 [2024-11-06 22:45:36,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 78 SyntacticMatches, 14 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4351 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1222, Invalid=5420, Unknown=0, NotChecked=0, Total=6642 [2024-11-06 22:45:36,618 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:36,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 63 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:45:36,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-06 22:45:36,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2024-11-06 22:45:36,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.0471698113207548) internal successors, (111), 106 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) [2024-11-06 22:45:36,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2024-11-06 22:45:36,626 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 69 [2024-11-06 22:45:36,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:36,626 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2024-11-06 22:45:36,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.0125) internal successors, (161), 80 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) [2024-11-06 22:45:36,627 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2024-11-06 22:45:36,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-06 22:45:36,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:36,627 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:36,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-06 22:45:36,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,48 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:36,827 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:36,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:36,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1788521436, now seen corresponding path program 24 times [2024-11-06 22:45:36,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:36,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049884008] [2024-11-06 22:45:36,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:36,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 171 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:37,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:37,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049884008] [2024-11-06 22:45:37,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049884008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:37,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203190591] [2024-11-06 22:45:37,315 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 22:45:37,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:37,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:37,317 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:37,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-06 22:45:37,374 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-06 22:45:37,374 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:37,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-06 22:45:37,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 196 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:38,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 196 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:38,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203190591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:38,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:38,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 79 [2024-11-06 22:45:38,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73918032] [2024-11-06 22:45:38,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:38,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-06 22:45:38,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:38,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-06 22:45:38,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=5009, Unknown=0, NotChecked=0, Total=6162 [2024-11-06 22:45:38,736 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand has 79 states, 79 states have (on average 2.037974683544304) internal successors, (161), 79 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) [2024-11-06 22:45:38,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:38,965 INFO L93 Difference]: Finished difference Result 148 states and 152 transitions. [2024-11-06 22:45:38,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-06 22:45:38,965 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.037974683544304) internal successors, (161), 79 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) Word has length 71 [2024-11-06 22:45:38,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:38,966 INFO L225 Difference]: With dead ends: 148 [2024-11-06 22:45:38,966 INFO L226 Difference]: Without dead ends: 107 [2024-11-06 22:45:38,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 83 SyntacticMatches, 14 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4289 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1198, Invalid=5282, Unknown=0, NotChecked=0, Total=6480 [2024-11-06 22:45:38,966 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:38,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 101 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:45:38,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-06 22:45:38,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2024-11-06 22:45:38,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.0380952380952382) internal successors, (109), 105 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) [2024-11-06 22:45:38,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2024-11-06 22:45:38,974 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 109 transitions. Word has length 71 [2024-11-06 22:45:38,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:38,974 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 109 transitions. [2024-11-06 22:45:38,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.037974683544304) internal successors, (161), 79 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) [2024-11-06 22:45:38,975 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 109 transitions. [2024-11-06 22:45:38,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-06 22:45:38,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:38,975 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:38,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-06 22:45:39,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-11-06 22:45:39,175 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:39,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:39,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1702271868, now seen corresponding path program 25 times [2024-11-06 22:45:39,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:39,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282600482] [2024-11-06 22:45:39,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:39,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:39,749 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 144 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:39,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:39,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282600482] [2024-11-06 22:45:39,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282600482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:39,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105230465] [2024-11-06 22:45:39,749 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 22:45:39,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:39,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:39,751 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:39,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-06 22:45:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:39,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-06 22:45:39,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:40,502 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 169 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:40,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:41,119 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 196 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:41,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105230465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:41,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:41,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 79 [2024-11-06 22:45:41,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888304970] [2024-11-06 22:45:41,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:41,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-06 22:45:41,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:41,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-06 22:45:41,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1166, Invalid=4996, Unknown=0, NotChecked=0, Total=6162 [2024-11-06 22:45:41,121 INFO L87 Difference]: Start difference. First operand 106 states and 109 transitions. Second operand has 79 states, 79 states have (on average 2.0632911392405062) internal successors, (163), 79 states have internal predecessors, (163), 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) [2024-11-06 22:45:41,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:41,380 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2024-11-06 22:45:41,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-06 22:45:41,380 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.0632911392405062) internal successors, (163), 79 states have internal predecessors, (163), 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 71 [2024-11-06 22:45:41,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:41,381 INFO L225 Difference]: With dead ends: 117 [2024-11-06 22:45:41,381 INFO L226 Difference]: Without dead ends: 110 [2024-11-06 22:45:41,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 83 SyntacticMatches, 14 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4322 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1233, Invalid=5247, Unknown=0, NotChecked=0, Total=6480 [2024-11-06 22:45:41,381 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:41,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 123 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:45:41,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-06 22:45:41,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2024-11-06 22:45:41,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0373831775700935) internal successors, (111), 107 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) [2024-11-06 22:45:41,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 111 transitions. [2024-11-06 22:45:41,390 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 111 transitions. Word has length 71 [2024-11-06 22:45:41,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:41,390 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 111 transitions. [2024-11-06 22:45:41,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.0632911392405062) internal successors, (163), 79 states have internal predecessors, (163), 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) [2024-11-06 22:45:41,390 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 111 transitions. [2024-11-06 22:45:41,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-06 22:45:41,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:41,390 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:41,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-11-06 22:45:41,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,50 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:41,591 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:41,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:41,591 INFO L85 PathProgramCache]: Analyzing trace with hash 463240226, now seen corresponding path program 26 times [2024-11-06 22:45:41,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:41,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615958972] [2024-11-06 22:45:41,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:41,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:42,140 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 169 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:42,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:42,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615958972] [2024-11-06 22:45:42,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615958972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:42,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894834273] [2024-11-06 22:45:42,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:45:42,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:42,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:42,142 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:42,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-06 22:45:42,197 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:45:42,197 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:42,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-06 22:45:42,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 196 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:43,069 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:43,789 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 196 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:43,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894834273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:43,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:43,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 86 [2024-11-06 22:45:43,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327972704] [2024-11-06 22:45:43,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:43,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-11-06 22:45:43,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:43,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-11-06 22:45:43,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1298, Invalid=6012, Unknown=0, NotChecked=0, Total=7310 [2024-11-06 22:45:43,791 INFO L87 Difference]: Start difference. First operand 108 states and 111 transitions. Second operand has 86 states, 86 states have (on average 1.9883720930232558) internal successors, (171), 86 states have internal predecessors, (171), 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) [2024-11-06 22:45:44,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:44,025 INFO L93 Difference]: Finished difference Result 155 states and 161 transitions. [2024-11-06 22:45:44,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-06 22:45:44,025 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.9883720930232558) internal successors, (171), 86 states have internal predecessors, (171), 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 73 [2024-11-06 22:45:44,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:44,026 INFO L225 Difference]: With dead ends: 155 [2024-11-06 22:45:44,026 INFO L226 Difference]: Without dead ends: 112 [2024-11-06 22:45:44,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 80 SyntacticMatches, 16 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5103 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1332, Invalid=6324, Unknown=0, NotChecked=0, Total=7656 [2024-11-06 22:45:44,026 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:44,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 83 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:45:44,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-06 22:45:44,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2024-11-06 22:45:44,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.0454545454545454) internal successors, (115), 110 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:45:44,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2024-11-06 22:45:44,035 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 73 [2024-11-06 22:45:44,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:44,035 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2024-11-06 22:45:44,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.9883720930232558) internal successors, (171), 86 states have internal predecessors, (171), 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) [2024-11-06 22:45:44,035 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2024-11-06 22:45:44,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-06 22:45:44,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:44,035 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:44,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-06 22:45:44,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,51 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:44,236 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:44,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:44,236 INFO L85 PathProgramCache]: Analyzing trace with hash -965825374, now seen corresponding path program 25 times [2024-11-06 22:45:44,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:44,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125531178] [2024-11-06 22:45:44,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:44,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:44,861 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 169 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:44,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:44,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125531178] [2024-11-06 22:45:44,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125531178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:44,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819817502] [2024-11-06 22:45:44,861 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 22:45:44,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:44,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:44,863 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:44,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-06 22:45:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:44,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-06 22:45:44,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 196 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:45,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:46,411 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 196 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:46,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819817502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:46,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:46,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 85 [2024-11-06 22:45:46,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240238002] [2024-11-06 22:45:46,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:46,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-06 22:45:46,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:46,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-06 22:45:46,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1303, Invalid=5837, Unknown=0, NotChecked=0, Total=7140 [2024-11-06 22:45:46,412 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand has 85 states, 85 states have (on average 2.011764705882353) internal successors, (171), 85 states have internal predecessors, (171), 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) [2024-11-06 22:45:46,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:46,676 INFO L93 Difference]: Finished difference Result 125 states and 130 transitions. [2024-11-06 22:45:46,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-06 22:45:46,677 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.011764705882353) internal successors, (171), 85 states have internal predecessors, (171), 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 73 [2024-11-06 22:45:46,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:46,677 INFO L225 Difference]: With dead ends: 125 [2024-11-06 22:45:46,677 INFO L226 Difference]: Without dead ends: 118 [2024-11-06 22:45:46,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 82 SyntacticMatches, 15 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4954 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1374, Invalid=6108, Unknown=0, NotChecked=0, Total=7482 [2024-11-06 22:45:46,678 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:46,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 128 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:45:46,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-06 22:45:46,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 113. [2024-11-06 22:45:46,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0446428571428572) internal successors, (117), 112 states have internal predecessors, (117), 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) [2024-11-06 22:45:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2024-11-06 22:45:46,687 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 73 [2024-11-06 22:45:46,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:46,688 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2024-11-06 22:45:46,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.011764705882353) internal successors, (171), 85 states have internal predecessors, (171), 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) [2024-11-06 22:45:46,688 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2024-11-06 22:45:46,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-06 22:45:46,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:46,688 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:46,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-11-06 22:45:46,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-06 22:45:46,889 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:46,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:46,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1347887808, now seen corresponding path program 26 times [2024-11-06 22:45:46,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:46,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089827664] [2024-11-06 22:45:46,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:46,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:47,438 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 198 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:47,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:47,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089827664] [2024-11-06 22:45:47,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089827664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:47,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287195573] [2024-11-06 22:45:47,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:45:47,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:47,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:47,440 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:47,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-06 22:45:47,502 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:45:47,503 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:47,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-06 22:45:47,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:48,306 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 225 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:48,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 225 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:48,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287195573] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:48,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:48,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 84 [2024-11-06 22:45:48,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660732884] [2024-11-06 22:45:48,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:48,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-11-06 22:45:48,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:48,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-11-06 22:45:48,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1301, Invalid=5671, Unknown=0, NotChecked=0, Total=6972 [2024-11-06 22:45:48,983 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand has 84 states, 84 states have (on average 2.0357142857142856) internal successors, (171), 84 states have internal predecessors, (171), 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) [2024-11-06 22:45:49,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:49,234 INFO L93 Difference]: Finished difference Result 156 states and 160 transitions. [2024-11-06 22:45:49,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-06 22:45:49,235 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0357142857142856) internal successors, (171), 84 states have internal predecessors, (171), 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 75 [2024-11-06 22:45:49,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:49,235 INFO L225 Difference]: With dead ends: 156 [2024-11-06 22:45:49,235 INFO L226 Difference]: Without dead ends: 113 [2024-11-06 22:45:49,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 88 SyntacticMatches, 14 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4840 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1348, Invalid=5962, Unknown=0, NotChecked=0, Total=7310 [2024-11-06 22:45:49,236 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:49,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 115 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:45:49,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-06 22:45:49,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2024-11-06 22:45:49,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.0360360360360361) internal successors, (115), 111 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:45:49,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 115 transitions. [2024-11-06 22:45:49,245 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 115 transitions. Word has length 75 [2024-11-06 22:45:49,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:49,245 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 115 transitions. [2024-11-06 22:45:49,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.0357142857142856) internal successors, (171), 84 states have internal predecessors, (171), 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) [2024-11-06 22:45:49,245 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 115 transitions. [2024-11-06 22:45:49,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-06 22:45:49,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:49,246 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:49,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-06 22:45:49,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-06 22:45:49,446 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:49,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:49,446 INFO L85 PathProgramCache]: Analyzing trace with hash 800173344, now seen corresponding path program 27 times [2024-11-06 22:45:49,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:49,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57718096] [2024-11-06 22:45:49,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:49,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 169 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:50,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:50,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57718096] [2024-11-06 22:45:50,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57718096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:50,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796579662] [2024-11-06 22:45:50,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:45:50,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:50,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:50,100 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:50,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-06 22:45:50,160 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-06 22:45:50,160 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:50,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-06 22:45:50,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:50,928 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 196 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:50,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:51,627 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 225 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:51,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796579662] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:51,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:51,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 84 [2024-11-06 22:45:51,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366035134] [2024-11-06 22:45:51,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:51,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-11-06 22:45:51,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:51,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-11-06 22:45:51,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1315, Invalid=5657, Unknown=0, NotChecked=0, Total=6972 [2024-11-06 22:45:51,628 INFO L87 Difference]: Start difference. First operand 112 states and 115 transitions. Second operand has 84 states, 84 states have (on average 2.0595238095238093) internal successors, (173), 84 states have internal predecessors, (173), 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) [2024-11-06 22:45:51,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:51,907 INFO L93 Difference]: Finished difference Result 123 states and 126 transitions. [2024-11-06 22:45:51,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-06 22:45:51,907 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0595238095238093) internal successors, (173), 84 states have internal predecessors, (173), 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 75 [2024-11-06 22:45:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:51,907 INFO L225 Difference]: With dead ends: 123 [2024-11-06 22:45:51,907 INFO L226 Difference]: Without dead ends: 116 [2024-11-06 22:45:51,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 87 SyntacticMatches, 15 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4923 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1386, Invalid=5924, Unknown=0, NotChecked=0, Total=7310 [2024-11-06 22:45:51,908 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:51,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 144 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:45:51,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-06 22:45:51,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2024-11-06 22:45:51,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.0353982300884956) internal successors, (117), 113 states have internal predecessors, (117), 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) [2024-11-06 22:45:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2024-11-06 22:45:51,917 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 75 [2024-11-06 22:45:51,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:51,917 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2024-11-06 22:45:51,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.0595238095238093) internal successors, (173), 84 states have internal predecessors, (173), 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) [2024-11-06 22:45:51,917 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2024-11-06 22:45:51,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-06 22:45:51,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:51,917 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:51,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-06 22:45:52,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-06 22:45:52,118 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:52,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:52,118 INFO L85 PathProgramCache]: Analyzing trace with hash 131403198, now seen corresponding path program 28 times [2024-11-06 22:45:52,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:52,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932643006] [2024-11-06 22:45:52,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:52,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:52,703 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 196 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:52,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:52,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932643006] [2024-11-06 22:45:52,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932643006] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:52,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719145658] [2024-11-06 22:45:52,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 22:45:52,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:52,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:52,705 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:52,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-06 22:45:52,761 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 22:45:52,761 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:52,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-06 22:45:52,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:53,694 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 225 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:53,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 225 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:54,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719145658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:54,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:54,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 91 [2024-11-06 22:45:54,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920564060] [2024-11-06 22:45:54,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:54,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-11-06 22:45:54,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:54,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-11-06 22:45:54,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1454, Invalid=6736, Unknown=0, NotChecked=0, Total=8190 [2024-11-06 22:45:54,481 INFO L87 Difference]: Start difference. First operand 114 states and 117 transitions. Second operand has 91 states, 91 states have (on average 1.989010989010989) internal successors, (181), 91 states have internal predecessors, (181), 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) [2024-11-06 22:45:54,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:54,826 INFO L93 Difference]: Finished difference Result 163 states and 169 transitions. [2024-11-06 22:45:54,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-06 22:45:54,826 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 1.989010989010989) internal successors, (181), 91 states have internal predecessors, (181), 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 77 [2024-11-06 22:45:54,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:54,826 INFO L225 Difference]: With dead ends: 163 [2024-11-06 22:45:54,826 INFO L226 Difference]: Without dead ends: 118 [2024-11-06 22:45:54,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 85 SyntacticMatches, 16 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5705 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1489, Invalid=7067, Unknown=0, NotChecked=0, Total=8556 [2024-11-06 22:45:54,827 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:54,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 111 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:45:54,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-06 22:45:54,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2024-11-06 22:45:54,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.043103448275862) internal successors, (121), 116 states have internal predecessors, (121), 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) [2024-11-06 22:45:54,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2024-11-06 22:45:54,837 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 77 [2024-11-06 22:45:54,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:54,837 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2024-11-06 22:45:54,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 1.989010989010989) internal successors, (181), 91 states have internal predecessors, (181), 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) [2024-11-06 22:45:54,837 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2024-11-06 22:45:54,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-06 22:45:54,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:54,837 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:54,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-06 22:45:55,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,55 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:55,037 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:55,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:55,038 INFO L85 PathProgramCache]: Analyzing trace with hash 322291390, now seen corresponding path program 27 times [2024-11-06 22:45:55,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:55,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546650027] [2024-11-06 22:45:55,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:55,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 196 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:55,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:55,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546650027] [2024-11-06 22:45:55,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546650027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:55,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723357490] [2024-11-06 22:45:55,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:45:55,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:55,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:55,764 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:55,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-06 22:45:55,828 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-06 22:45:55,828 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:55,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-06 22:45:55,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 225 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:56,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:45:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 225 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:57,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723357490] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:45:57,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:45:57,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 90 [2024-11-06 22:45:57,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569082837] [2024-11-06 22:45:57,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:45:57,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-11-06 22:45:57,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:45:57,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-11-06 22:45:57,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1460, Invalid=6550, Unknown=0, NotChecked=0, Total=8010 [2024-11-06 22:45:57,462 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand has 90 states, 90 states have (on average 2.011111111111111) internal successors, (181), 90 states have internal predecessors, (181), 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) [2024-11-06 22:45:57,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:45:57,759 INFO L93 Difference]: Finished difference Result 131 states and 136 transitions. [2024-11-06 22:45:57,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-06 22:45:57,760 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.011111111111111) internal successors, (181), 90 states have internal predecessors, (181), 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 77 [2024-11-06 22:45:57,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:45:57,760 INFO L225 Difference]: With dead ends: 131 [2024-11-06 22:45:57,760 INFO L226 Difference]: Without dead ends: 124 [2024-11-06 22:45:57,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 86 SyntacticMatches, 16 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5596 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1535, Invalid=6837, Unknown=0, NotChecked=0, Total=8372 [2024-11-06 22:45:57,761 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:45:57,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 128 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:45:57,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-06 22:45:57,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 119. [2024-11-06 22:45:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0423728813559323) internal successors, (123), 118 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) [2024-11-06 22:45:57,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2024-11-06 22:45:57,771 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 77 [2024-11-06 22:45:57,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:45:57,772 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2024-11-06 22:45:57,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.011111111111111) internal successors, (181), 90 states have internal predecessors, (181), 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) [2024-11-06 22:45:57,772 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2024-11-06 22:45:57,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-06 22:45:57,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:45:57,772 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:45:57,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-06 22:45:57,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,56 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:57,973 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:45:57,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:45:57,973 INFO L85 PathProgramCache]: Analyzing trace with hash -418258852, now seen corresponding path program 28 times [2024-11-06 22:45:57,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:45:57,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543482120] [2024-11-06 22:45:57,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:45:57,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:45:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:45:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 227 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:58,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:45:58,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543482120] [2024-11-06 22:45:58,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543482120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:45:58,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126305159] [2024-11-06 22:45:58,587 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 22:45:58,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:45:58,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:45:58,589 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:45:58,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-06 22:45:58,645 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 22:45:58,645 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:45:58,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-06 22:45:58,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:45:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 256 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:45:59,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:46:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 256 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:46:00,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126305159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:46:00,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:46:00,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 89 [2024-11-06 22:46:00,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698792152] [2024-11-06 22:46:00,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:46:00,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-11-06 22:46:00,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:46:00,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-11-06 22:46:00,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1458, Invalid=6374, Unknown=0, NotChecked=0, Total=7832 [2024-11-06 22:46:00,291 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand has 89 states, 89 states have (on average 2.033707865168539) internal successors, (181), 89 states have internal predecessors, (181), 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) [2024-11-06 22:46:00,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:46:00,608 INFO L93 Difference]: Finished difference Result 164 states and 168 transitions. [2024-11-06 22:46:00,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-06 22:46:00,608 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.033707865168539) internal successors, (181), 89 states have internal predecessors, (181), 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 79 [2024-11-06 22:46:00,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:46:00,609 INFO L225 Difference]: With dead ends: 164 [2024-11-06 22:46:00,609 INFO L226 Difference]: Without dead ends: 119 [2024-11-06 22:46:00,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 91 SyntacticMatches, 16 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5526 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1507, Invalid=6683, Unknown=0, NotChecked=0, Total=8190 [2024-11-06 22:46:00,609 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:46:00,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 137 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:46:00,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-06 22:46:00,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2024-11-06 22:46:00,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0341880341880343) internal successors, (121), 117 states have internal predecessors, (121), 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) [2024-11-06 22:46:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 121 transitions. [2024-11-06 22:46:00,628 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 121 transitions. Word has length 79 [2024-11-06 22:46:00,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:46:00,628 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 121 transitions. [2024-11-06 22:46:00,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.033707865168539) internal successors, (181), 89 states have internal predecessors, (181), 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) [2024-11-06 22:46:00,628 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 121 transitions. [2024-11-06 22:46:00,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-06 22:46:00,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:46:00,629 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:46:00,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-11-06 22:46:00,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-11-06 22:46:00,830 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:46:00,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:46:00,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1144156228, now seen corresponding path program 29 times [2024-11-06 22:46:00,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:46:00,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718218449] [2024-11-06 22:46:00,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:00,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:46:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 196 proven. 285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:46:01,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:46:01,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718218449] [2024-11-06 22:46:01,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718218449] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:46:01,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716492582] [2024-11-06 22:46:01,535 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 22:46:01,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:46:01,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:46:01,536 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:46:01,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-06 22:46:01,596 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-06 22:46:01,596 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:46:01,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-06 22:46:01,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:46:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 225 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:46:02,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:46:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 256 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:46:03,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716492582] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:46:03,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:46:03,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 89 [2024-11-06 22:46:03,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659923071] [2024-11-06 22:46:03,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:46:03,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-11-06 22:46:03,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:46:03,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-11-06 22:46:03,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1473, Invalid=6359, Unknown=0, NotChecked=0, Total=7832 [2024-11-06 22:46:03,233 INFO L87 Difference]: Start difference. First operand 118 states and 121 transitions. Second operand has 89 states, 89 states have (on average 2.056179775280899) internal successors, (183), 89 states have internal predecessors, (183), 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) [2024-11-06 22:46:03,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:46:03,517 INFO L93 Difference]: Finished difference Result 129 states and 132 transitions. [2024-11-06 22:46:03,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-06 22:46:03,517 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.056179775280899) internal successors, (183), 89 states have internal predecessors, (183), 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 79 [2024-11-06 22:46:03,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:46:03,518 INFO L225 Difference]: With dead ends: 129 [2024-11-06 22:46:03,518 INFO L226 Difference]: Without dead ends: 122 [2024-11-06 22:46:03,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 91 SyntacticMatches, 16 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5563 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1548, Invalid=6642, Unknown=0, NotChecked=0, Total=8190 [2024-11-06 22:46:03,519 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:46:03,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 155 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:46:03,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-06 22:46:03,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2024-11-06 22:46:03,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.0336134453781514) internal successors, (123), 119 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) [2024-11-06 22:46:03,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 123 transitions. [2024-11-06 22:46:03,529 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 123 transitions. Word has length 79 [2024-11-06 22:46:03,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:46:03,529 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 123 transitions. [2024-11-06 22:46:03,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.056179775280899) internal successors, (183), 89 states have internal predecessors, (183), 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) [2024-11-06 22:46:03,529 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 123 transitions. [2024-11-06 22:46:03,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-06 22:46:03,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:46:03,530 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:46:03,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-06 22:46:03,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,58 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:46:03,730 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:46:03,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:46:03,730 INFO L85 PathProgramCache]: Analyzing trace with hash -58541734, now seen corresponding path program 30 times [2024-11-06 22:46:03,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:46:03,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733936864] [2024-11-06 22:46:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:03,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:46:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 225 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:46:04,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:46:04,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733936864] [2024-11-06 22:46:04,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733936864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:46:04,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289428804] [2024-11-06 22:46:04,362 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 22:46:04,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:46:04,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:46:04,364 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:46:04,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-06 22:46:04,426 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-06 22:46:04,427 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:46:04,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-06 22:46:04,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:46:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 256 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:46:05,448 INFO L311 TraceCheckSpWp]: Computing backward predicates...