./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label39.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/eca-rers2012/Problem03_label39.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', 'e75b25accfa51338058ad16425748718d01a5d94bd667d18c22ba63a9d75c3da'] 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/eca-rers2012/Problem03_label39.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 e75b25accfa51338058ad16425748718d01a5d94bd667d18c22ba63a9d75c3da --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 18:57:56,990 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 18:57:57,084 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 18:57:57,089 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 18:57:57,091 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 18:57:57,112 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 18:57:57,113 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 18:57:57,113 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 18:57:57,113 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 18:57:57,113 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 18:57:57,116 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 18:57:57,116 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 18:57:57,116 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 18:57:57,117 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 18:57:57,117 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 18:57:57,117 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 18:57:57,117 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 18:57:57,117 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 18:57:57,117 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 18:57:57,117 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 18:57:57,119 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 18:57:57,119 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 18:57:57,119 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 18:57:57,119 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 18:57:57,119 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 18:57:57,119 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 18:57:57,119 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 18:57:57,119 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 18:57:57,119 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 18:57:57,119 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 18:57:57,119 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 18:57:57,120 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 18:57:57,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:57:57,120 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 18:57:57,120 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 18:57:57,120 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 18:57:57,120 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 18:57:57,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 18:57:57,120 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 18:57:57,120 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 18:57:57,120 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 18:57:57,120 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 18:57:57,120 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 -> e75b25accfa51338058ad16425748718d01a5d94bd667d18c22ba63a9d75c3da [2024-11-06 18:57:57,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 18:57:57,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 18:57:57,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 18:57:57,421 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 18:57:57,421 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 18:57:57,423 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label39.c [2024-11-06 18:57:58,759 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 18:57:59,174 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 18:57:59,177 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label39.c [2024-11-06 18:57:59,199 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6ac0f994c/4cd37c5b7aac469c9f4d8ad79f45bac8/FLAGb395f68b4 [2024-11-06 18:57:59,216 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6ac0f994c/4cd37c5b7aac469c9f4d8ad79f45bac8 [2024-11-06 18:57:59,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 18:57:59,222 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 18:57:59,224 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 18:57:59,224 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 18:57:59,228 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 18:57:59,229 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:57:59" (1/1) ... [2024-11-06 18:57:59,231 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ca0651f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:57:59, skipping insertion in model container [2024-11-06 18:57:59,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:57:59" (1/1) ... [2024-11-06 18:57:59,292 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 18:57:59,670 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/eca-rers2012/Problem03_label39.c[54057,54070] [2024-11-06 18:57:59,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:57:59,726 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 18:57:59,887 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/eca-rers2012/Problem03_label39.c[54057,54070] [2024-11-06 18:57:59,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:57:59,933 INFO L204 MainTranslator]: Completed translation [2024-11-06 18:57:59,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:57:59 WrapperNode [2024-11-06 18:57:59,935 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 18:57:59,937 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 18:57:59,937 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 18:57:59,937 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 18:57:59,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:57:59" (1/1) ... [2024-11-06 18:57:59,980 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:57:59" (1/1) ... [2024-11-06 18:58:00,070 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-11-06 18:58:00,070 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 18:58:00,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 18:58:00,071 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 18:58:00,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 18:58:00,080 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:57:59" (1/1) ... [2024-11-06 18:58:00,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:57:59" (1/1) ... [2024-11-06 18:58:00,089 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:57:59" (1/1) ... [2024-11-06 18:58:00,142 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 18:58:00,146 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:57:59" (1/1) ... [2024-11-06 18:58:00,146 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:57:59" (1/1) ... [2024-11-06 18:58:00,197 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:57:59" (1/1) ... [2024-11-06 18:58:00,207 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:57:59" (1/1) ... [2024-11-06 18:58:00,219 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:57:59" (1/1) ... [2024-11-06 18:58:00,227 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:57:59" (1/1) ... [2024-11-06 18:58:00,244 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 18:58:00,246 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 18:58:00,246 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 18:58:00,246 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 18:58:00,247 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:57:59" (1/1) ... [2024-11-06 18:58:00,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:58:00,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:58:00,279 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 18:58:00,284 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 18:58:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 18:58:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 18:58:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 18:58:00,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 18:58:00,398 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 18:58:00,400 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 18:58:02,298 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-06 18:58:02,299 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 18:58:02,319 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 18:58:02,320 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 18:58:02,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:58:02 BoogieIcfgContainer [2024-11-06 18:58:02,320 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 18:58:02,325 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 18:58:02,325 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 18:58:02,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 18:58:02,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:57:59" (1/3) ... [2024-11-06 18:58:02,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aab6cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:58:02, skipping insertion in model container [2024-11-06 18:58:02,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:57:59" (2/3) ... [2024-11-06 18:58:02,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aab6cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:58:02, skipping insertion in model container [2024-11-06 18:58:02,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:58:02" (3/3) ... [2024-11-06 18:58:02,331 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label39.c [2024-11-06 18:58:02,344 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 18:58:02,345 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 18:58:02,410 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 18:58:02,423 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;@19ceaddb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 18:58:02,424 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 18:58:02,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 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 18:58:02,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-06 18:58:02,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:02,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:02,444 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:02,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:02,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1090968285, now seen corresponding path program 1 times [2024-11-06 18:58:02,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:02,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727640961] [2024-11-06 18:58:02,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:02,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:03,381 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 18:58:03,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:03,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727640961] [2024-11-06 18:58:03,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727640961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:03,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:58:03,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:58:03,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620562402] [2024-11-06 18:58:03,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:03,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:58:03,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:03,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:58:03,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:58:03,418 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 18:58:04,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:04,483 INFO L93 Difference]: Finished difference Result 860 states and 1507 transitions. [2024-11-06 18:58:04,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:58:04,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2024-11-06 18:58:04,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:04,495 INFO L225 Difference]: With dead ends: 860 [2024-11-06 18:58:04,497 INFO L226 Difference]: Without dead ends: 465 [2024-11-06 18:58:04,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 18:58:04,503 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 157 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:04,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 170 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-06 18:58:04,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2024-11-06 18:58:04,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 459. [2024-11-06 18:58:04,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.556768558951965) internal successors, (713), 458 states have internal predecessors, (713), 0 states have call successors, (0), 0 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 18:58:04,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 713 transitions. [2024-11-06 18:58:04,562 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 713 transitions. Word has length 147 [2024-11-06 18:58:04,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:58:04,563 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 713 transitions. [2024-11-06 18:58:04,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 18:58:04,563 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 713 transitions. [2024-11-06 18:58:04,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-06 18:58:04,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:04,569 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:04,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 18:58:04,569 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:04,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:04,570 INFO L85 PathProgramCache]: Analyzing trace with hash -481274588, now seen corresponding path program 1 times [2024-11-06 18:58:04,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:04,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89747606] [2024-11-06 18:58:04,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:04,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:58:04,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:04,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89747606] [2024-11-06 18:58:04,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89747606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:04,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:58:04,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:58:04,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578771347] [2024-11-06 18:58:04,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:04,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:58:04,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:04,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:58:04,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:58:04,781 INFO L87 Difference]: Start difference. First operand 459 states and 713 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 18:58:05,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:05,622 INFO L93 Difference]: Finished difference Result 1343 states and 2102 transitions. [2024-11-06 18:58:05,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:58:05,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2024-11-06 18:58:05,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:05,631 INFO L225 Difference]: With dead ends: 1343 [2024-11-06 18:58:05,632 INFO L226 Difference]: Without dead ends: 886 [2024-11-06 18:58:05,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 18:58:05,633 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:05,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 89 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-06 18:58:05,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-11-06 18:58:05,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 868. [2024-11-06 18:58:05,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 1.5340253748558246) internal successors, (1330), 867 states have internal predecessors, (1330), 0 states have call successors, (0), 0 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 18:58:05,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1330 transitions. [2024-11-06 18:58:05,670 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1330 transitions. Word has length 155 [2024-11-06 18:58:05,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:58:05,670 INFO L471 AbstractCegarLoop]: Abstraction has 868 states and 1330 transitions. [2024-11-06 18:58:05,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 18:58:05,671 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1330 transitions. [2024-11-06 18:58:05,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-06 18:58:05,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:05,676 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:05,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 18:58:05,676 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:05,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:05,677 INFO L85 PathProgramCache]: Analyzing trace with hash 382954205, now seen corresponding path program 1 times [2024-11-06 18:58:05,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:05,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731219167] [2024-11-06 18:58:05,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:05,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:58:05,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:05,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731219167] [2024-11-06 18:58:05,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731219167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:05,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:58:05,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:58:05,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109364374] [2024-11-06 18:58:05,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:05,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:58:05,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:05,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:58:05,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:58:05,931 INFO L87 Difference]: Start difference. First operand 868 states and 1330 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:58:06,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:06,748 INFO L93 Difference]: Finished difference Result 2571 states and 3945 transitions. [2024-11-06 18:58:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:58:06,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2024-11-06 18:58:06,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:06,756 INFO L225 Difference]: With dead ends: 2571 [2024-11-06 18:58:06,756 INFO L226 Difference]: Without dead ends: 1705 [2024-11-06 18:58:06,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 18:58:06,759 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 253 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:06,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 138 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-06 18:58:06,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2024-11-06 18:58:06,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1704. [2024-11-06 18:58:06,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1703 states have (on average 1.4474456840869054) internal successors, (2465), 1703 states have internal predecessors, (2465), 0 states have call successors, (0), 0 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 18:58:06,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2465 transitions. [2024-11-06 18:58:06,811 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2465 transitions. Word has length 156 [2024-11-06 18:58:06,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:58:06,812 INFO L471 AbstractCegarLoop]: Abstraction has 1704 states and 2465 transitions. [2024-11-06 18:58:06,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:58:06,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2465 transitions. [2024-11-06 18:58:06,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-06 18:58:06,818 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:06,818 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:06,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 18:58:06,818 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:06,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:06,820 INFO L85 PathProgramCache]: Analyzing trace with hash -517919847, now seen corresponding path program 1 times [2024-11-06 18:58:06,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:06,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345485937] [2024-11-06 18:58:06,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:06,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:58:07,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:07,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345485937] [2024-11-06 18:58:07,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345485937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:07,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:58:07,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:58:07,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784298991] [2024-11-06 18:58:07,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:07,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:58:07,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:07,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:58:07,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:58:07,095 INFO L87 Difference]: Start difference. First operand 1704 states and 2465 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 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 18:58:07,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:07,921 INFO L93 Difference]: Finished difference Result 5042 states and 7301 transitions. [2024-11-06 18:58:07,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:58:07,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 162 [2024-11-06 18:58:07,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:07,936 INFO L225 Difference]: With dead ends: 5042 [2024-11-06 18:58:07,937 INFO L226 Difference]: Without dead ends: 3340 [2024-11-06 18:58:07,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:58:07,940 INFO L432 NwaCegarLoop]: 375 mSDtfsCounter, 116 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:07,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 401 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-06 18:58:07,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3340 states. [2024-11-06 18:58:08,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3340 to 3337. [2024-11-06 18:58:08,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3337 states, 3336 states have (on average 1.3690047961630696) internal successors, (4567), 3336 states have internal predecessors, (4567), 0 states have call successors, (0), 0 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 18:58:08,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3337 states to 3337 states and 4567 transitions. [2024-11-06 18:58:08,028 INFO L78 Accepts]: Start accepts. Automaton has 3337 states and 4567 transitions. Word has length 162 [2024-11-06 18:58:08,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:58:08,029 INFO L471 AbstractCegarLoop]: Abstraction has 3337 states and 4567 transitions. [2024-11-06 18:58:08,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 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 18:58:08,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3337 states and 4567 transitions. [2024-11-06 18:58:08,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-06 18:58:08,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:08,035 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:08,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 18:58:08,036 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:08,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:08,036 INFO L85 PathProgramCache]: Analyzing trace with hash -326738375, now seen corresponding path program 1 times [2024-11-06 18:58:08,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:08,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784561481] [2024-11-06 18:58:08,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:08,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:08,312 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-06 18:58:08,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:08,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784561481] [2024-11-06 18:58:08,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784561481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:08,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:58:08,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:58:08,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640327924] [2024-11-06 18:58:08,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:08,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:58:08,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:08,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:58:08,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:58:08,313 INFO L87 Difference]: Start difference. First operand 3337 states and 4567 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 18:58:09,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:09,151 INFO L93 Difference]: Finished difference Result 8320 states and 11357 transitions. [2024-11-06 18:58:09,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:58:09,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 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 171 [2024-11-06 18:58:09,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:09,169 INFO L225 Difference]: With dead ends: 8320 [2024-11-06 18:58:09,169 INFO L226 Difference]: Without dead ends: 4985 [2024-11-06 18:58:09,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 18:58:09,175 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 231 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:09,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 119 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-06 18:58:09,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4985 states. [2024-11-06 18:58:09,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4985 to 4984. [2024-11-06 18:58:09,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4984 states, 4983 states have (on average 1.3401565322095124) internal successors, (6678), 4983 states have internal predecessors, (6678), 0 states have call successors, (0), 0 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 18:58:09,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4984 states to 4984 states and 6678 transitions. [2024-11-06 18:58:09,292 INFO L78 Accepts]: Start accepts. Automaton has 4984 states and 6678 transitions. Word has length 171 [2024-11-06 18:58:09,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:58:09,292 INFO L471 AbstractCegarLoop]: Abstraction has 4984 states and 6678 transitions. [2024-11-06 18:58:09,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 18:58:09,293 INFO L276 IsEmpty]: Start isEmpty. Operand 4984 states and 6678 transitions. [2024-11-06 18:58:09,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-06 18:58:09,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:09,303 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:09,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 18:58:09,303 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:09,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:09,304 INFO L85 PathProgramCache]: Analyzing trace with hash -134534967, now seen corresponding path program 1 times [2024-11-06 18:58:09,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:09,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705043039] [2024-11-06 18:58:09,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:09,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:58:09,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:09,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705043039] [2024-11-06 18:58:09,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705043039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:09,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:58:09,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:58:09,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913786197] [2024-11-06 18:58:09,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:09,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:58:09,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:09,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:58:09,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:58:09,489 INFO L87 Difference]: Start difference. First operand 4984 states and 6678 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 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 18:58:09,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:09,851 INFO L93 Difference]: Finished difference Result 14902 states and 19969 transitions. [2024-11-06 18:58:09,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:58:09,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 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 176 [2024-11-06 18:58:09,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:09,884 INFO L225 Difference]: With dead ends: 14902 [2024-11-06 18:58:09,884 INFO L226 Difference]: Without dead ends: 9920 [2024-11-06 18:58:09,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:58:09,893 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 353 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:09,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 541 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 18:58:09,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9920 states. [2024-11-06 18:58:10,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9920 to 9918. [2024-11-06 18:58:10,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9918 states, 9917 states have (on average 1.3379046082484622) internal successors, (13268), 9917 states have internal predecessors, (13268), 0 states have call successors, (0), 0 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 18:58:10,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9918 states to 9918 states and 13268 transitions. [2024-11-06 18:58:10,125 INFO L78 Accepts]: Start accepts. Automaton has 9918 states and 13268 transitions. Word has length 176 [2024-11-06 18:58:10,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:58:10,125 INFO L471 AbstractCegarLoop]: Abstraction has 9918 states and 13268 transitions. [2024-11-06 18:58:10,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 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 18:58:10,126 INFO L276 IsEmpty]: Start isEmpty. Operand 9918 states and 13268 transitions. [2024-11-06 18:58:10,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-06 18:58:10,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:10,138 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:10,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-06 18:58:10,139 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:10,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:10,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1444061302, now seen corresponding path program 1 times [2024-11-06 18:58:10,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:10,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299883441] [2024-11-06 18:58:10,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:10,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:10,278 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:58:10,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:10,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299883441] [2024-11-06 18:58:10,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299883441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:10,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:58:10,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:58:10,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707795452] [2024-11-06 18:58:10,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:10,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:58:10,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:10,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:58:10,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:58:10,282 INFO L87 Difference]: Start difference. First operand 9918 states and 13268 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 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 18:58:11,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:11,103 INFO L93 Difference]: Finished difference Result 19804 states and 26490 transitions. [2024-11-06 18:58:11,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:58:11,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 177 [2024-11-06 18:58:11,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:11,129 INFO L225 Difference]: With dead ends: 19804 [2024-11-06 18:58:11,129 INFO L226 Difference]: Without dead ends: 9888 [2024-11-06 18:58:11,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:58:11,142 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 271 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:11,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 380 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:58:11,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9888 states. [2024-11-06 18:58:11,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9888 to 9886. [2024-11-06 18:58:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9886 states, 9885 states have (on average 1.2562468386444108) internal successors, (12418), 9885 states have internal predecessors, (12418), 0 states have call successors, (0), 0 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 18:58:11,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9886 states to 9886 states and 12418 transitions. [2024-11-06 18:58:11,322 INFO L78 Accepts]: Start accepts. Automaton has 9886 states and 12418 transitions. Word has length 177 [2024-11-06 18:58:11,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:58:11,322 INFO L471 AbstractCegarLoop]: Abstraction has 9886 states and 12418 transitions. [2024-11-06 18:58:11,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 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 18:58:11,323 INFO L276 IsEmpty]: Start isEmpty. Operand 9886 states and 12418 transitions. [2024-11-06 18:58:11,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-06 18:58:11,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:11,334 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:11,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 18:58:11,335 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:11,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:11,335 INFO L85 PathProgramCache]: Analyzing trace with hash 416308017, now seen corresponding path program 1 times [2024-11-06 18:58:11,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:11,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52889133] [2024-11-06 18:58:11,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:11,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:58:11,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:11,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52889133] [2024-11-06 18:58:11,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52889133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:11,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:58:11,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:58:11,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384062065] [2024-11-06 18:58:11,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:11,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:58:11,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:11,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:58:11,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:58:11,676 INFO L87 Difference]: Start difference. First operand 9886 states and 12418 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 18:58:12,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:12,618 INFO L93 Difference]: Finished difference Result 27687 states and 34790 transitions. [2024-11-06 18:58:12,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:58:12,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 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 179 [2024-11-06 18:58:12,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:12,662 INFO L225 Difference]: With dead ends: 27687 [2024-11-06 18:58:12,662 INFO L226 Difference]: Without dead ends: 17803 [2024-11-06 18:58:12,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 18:58:12,678 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 206 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:12,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 195 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-06 18:58:12,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17803 states. [2024-11-06 18:58:12,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17803 to 17803. [2024-11-06 18:58:12,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17803 states, 17802 states have (on average 1.1701494214133243) internal successors, (20831), 17802 states have internal predecessors, (20831), 0 states have call successors, (0), 0 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 18:58:12,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17803 states to 17803 states and 20831 transitions. [2024-11-06 18:58:12,938 INFO L78 Accepts]: Start accepts. Automaton has 17803 states and 20831 transitions. Word has length 179 [2024-11-06 18:58:12,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:58:12,938 INFO L471 AbstractCegarLoop]: Abstraction has 17803 states and 20831 transitions. [2024-11-06 18:58:12,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 18:58:12,939 INFO L276 IsEmpty]: Start isEmpty. Operand 17803 states and 20831 transitions. [2024-11-06 18:58:12,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-06 18:58:12,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:12,956 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:12,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-06 18:58:12,956 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:12,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:12,957 INFO L85 PathProgramCache]: Analyzing trace with hash -694766005, now seen corresponding path program 1 times [2024-11-06 18:58:12,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:12,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472176157] [2024-11-06 18:58:12,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:12,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:13,224 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:58:13,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:13,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472176157] [2024-11-06 18:58:13,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472176157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:13,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:58:13,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:58:13,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319238852] [2024-11-06 18:58:13,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:13,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:58:13,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:13,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:58:13,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:58:13,226 INFO L87 Difference]: Start difference. First operand 17803 states and 20831 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 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 18:58:14,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:14,820 INFO L93 Difference]: Finished difference Result 66367 states and 78241 transitions. [2024-11-06 18:58:14,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:58:14,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 189 [2024-11-06 18:58:14,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:14,938 INFO L225 Difference]: With dead ends: 66367 [2024-11-06 18:58:14,938 INFO L226 Difference]: Without dead ends: 48566 [2024-11-06 18:58:14,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:58:14,965 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 888 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:14,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 113 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-06 18:58:15,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48566 states. [2024-11-06 18:58:15,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48566 to 48560. [2024-11-06 18:58:15,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48560 states, 48559 states have (on average 1.1688255524207665) internal successors, (56757), 48559 states have internal predecessors, (56757), 0 states have call successors, (0), 0 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 18:58:15,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48560 states to 48560 states and 56757 transitions. [2024-11-06 18:58:15,739 INFO L78 Accepts]: Start accepts. Automaton has 48560 states and 56757 transitions. Word has length 189 [2024-11-06 18:58:15,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:58:15,739 INFO L471 AbstractCegarLoop]: Abstraction has 48560 states and 56757 transitions. [2024-11-06 18:58:15,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 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 18:58:15,739 INFO L276 IsEmpty]: Start isEmpty. Operand 48560 states and 56757 transitions. [2024-11-06 18:58:15,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-06 18:58:15,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:15,759 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:15,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-06 18:58:15,759 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:15,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:15,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2046268926, now seen corresponding path program 1 times [2024-11-06 18:58:15,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:15,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543928356] [2024-11-06 18:58:15,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:15,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:58:16,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:16,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543928356] [2024-11-06 18:58:16,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543928356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:16,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:58:16,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:58:16,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460048344] [2024-11-06 18:58:16,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:16,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:58:16,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:16,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:58:16,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:58:16,113 INFO L87 Difference]: Start difference. First operand 48560 states and 56757 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 18:58:17,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:17,257 INFO L93 Difference]: Finished difference Result 118085 states and 138191 transitions. [2024-11-06 18:58:17,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:58:17,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 196 [2024-11-06 18:58:17,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:17,377 INFO L225 Difference]: With dead ends: 118085 [2024-11-06 18:58:17,377 INFO L226 Difference]: Without dead ends: 69527 [2024-11-06 18:58:17,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:58:17,425 INFO L432 NwaCegarLoop]: 350 mSDtfsCounter, 195 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:17,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 370 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-06 18:58:17,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69527 states. [2024-11-06 18:58:18,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69527 to 68048. [2024-11-06 18:58:18,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68048 states, 68047 states have (on average 1.1537466750922156) internal successors, (78509), 68047 states have internal predecessors, (78509), 0 states have call successors, (0), 0 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 18:58:18,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68048 states to 68048 states and 78509 transitions. [2024-11-06 18:58:18,544 INFO L78 Accepts]: Start accepts. Automaton has 68048 states and 78509 transitions. Word has length 196 [2024-11-06 18:58:18,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:58:18,546 INFO L471 AbstractCegarLoop]: Abstraction has 68048 states and 78509 transitions. [2024-11-06 18:58:18,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 18:58:18,547 INFO L276 IsEmpty]: Start isEmpty. Operand 68048 states and 78509 transitions. [2024-11-06 18:58:18,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-06 18:58:18,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:18,565 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:18,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-06 18:58:18,565 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:18,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:18,566 INFO L85 PathProgramCache]: Analyzing trace with hash -518861033, now seen corresponding path program 1 times [2024-11-06 18:58:18,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:18,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650787656] [2024-11-06 18:58:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:18,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:19,159 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-06 18:58:19,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:19,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650787656] [2024-11-06 18:58:19,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650787656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:58:19,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043284838] [2024-11-06 18:58:19,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:19,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:58:19,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:58:19,173 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 18:58:19,181 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 18:58:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:19,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:58:19,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:58:19,638 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-06 18:58:19,642 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:58:19,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043284838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:19,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:58:19,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 18:58:19,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389703533] [2024-11-06 18:58:19,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:19,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:58:19,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:19,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:58:19,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:58:19,644 INFO L87 Difference]: Start difference. First operand 68048 states and 78509 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 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 18:58:20,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:20,690 INFO L93 Difference]: Finished difference Result 135706 states and 156618 transitions. [2024-11-06 18:58:20,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:58:20,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 207 [2024-11-06 18:58:20,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:20,780 INFO L225 Difference]: With dead ends: 135706 [2024-11-06 18:58:20,780 INFO L226 Difference]: Without dead ends: 67660 [2024-11-06 18:58:20,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 206 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 18:58:20,835 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 241 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:20,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 189 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:58:20,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67660 states. [2024-11-06 18:58:21,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67660 to 67642. [2024-11-06 18:58:21,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67642 states, 67641 states have (on average 1.1337354563060866) internal successors, (76687), 67641 states have internal predecessors, (76687), 0 states have call successors, (0), 0 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 18:58:21,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67642 states to 67642 states and 76687 transitions. [2024-11-06 18:58:21,673 INFO L78 Accepts]: Start accepts. Automaton has 67642 states and 76687 transitions. Word has length 207 [2024-11-06 18:58:21,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:58:21,674 INFO L471 AbstractCegarLoop]: Abstraction has 67642 states and 76687 transitions. [2024-11-06 18:58:21,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 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 18:58:21,674 INFO L276 IsEmpty]: Start isEmpty. Operand 67642 states and 76687 transitions. [2024-11-06 18:58:21,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-06 18:58:21,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:21,686 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:21,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-06 18:58:21,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-06 18:58:21,887 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:21,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:21,887 INFO L85 PathProgramCache]: Analyzing trace with hash -128175715, now seen corresponding path program 1 times [2024-11-06 18:58:21,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:21,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022673779] [2024-11-06 18:58:21,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:21,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:22,306 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:58:22,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:22,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022673779] [2024-11-06 18:58:22,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022673779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:22,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:58:22,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:58:22,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629230437] [2024-11-06 18:58:22,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:22,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:58:22,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:22,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:58:22,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:58:22,307 INFO L87 Difference]: Start difference. First operand 67642 states and 76687 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 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 18:58:23,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:23,627 INFO L93 Difference]: Finished difference Result 139010 states and 157890 transitions. [2024-11-06 18:58:23,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:58:23,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 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 212 [2024-11-06 18:58:23,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:23,698 INFO L225 Difference]: With dead ends: 139010 [2024-11-06 18:58:23,698 INFO L226 Difference]: Without dead ends: 71370 [2024-11-06 18:58:23,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:58:23,743 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 421 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:23,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 149 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-06 18:58:23,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71370 states. [2024-11-06 18:58:24,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71370 to 66424. [2024-11-06 18:58:24,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66424 states, 66423 states have (on average 1.1324842298601387) internal successors, (75223), 66423 states have internal predecessors, (75223), 0 states have call successors, (0), 0 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 18:58:24,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66424 states to 66424 states and 75223 transitions. [2024-11-06 18:58:24,611 INFO L78 Accepts]: Start accepts. Automaton has 66424 states and 75223 transitions. Word has length 212 [2024-11-06 18:58:24,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:58:24,611 INFO L471 AbstractCegarLoop]: Abstraction has 66424 states and 75223 transitions. [2024-11-06 18:58:24,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 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 18:58:24,611 INFO L276 IsEmpty]: Start isEmpty. Operand 66424 states and 75223 transitions. [2024-11-06 18:58:24,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-06 18:58:24,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:24,627 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:24,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-06 18:58:24,627 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:24,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:24,628 INFO L85 PathProgramCache]: Analyzing trace with hash -29643576, now seen corresponding path program 1 times [2024-11-06 18:58:24,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:24,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843612071] [2024-11-06 18:58:24,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:24,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:25,212 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-06 18:58:25,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:25,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843612071] [2024-11-06 18:58:25,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843612071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:58:25,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185405987] [2024-11-06 18:58:25,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:25,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:58:25,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:58:25,216 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 18:58:25,217 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 18:58:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:25,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:58:25,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:58:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-06 18:58:25,616 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:58:25,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185405987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:25,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:58:25,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 18:58:25,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878170893] [2024-11-06 18:58:25,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:25,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:58:25,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:25,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:58:25,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:58:25,618 INFO L87 Difference]: Start difference. First operand 66424 states and 75223 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 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 18:58:26,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:26,639 INFO L93 Difference]: Finished difference Result 164126 states and 187169 transitions. [2024-11-06 18:58:26,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:58:26,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 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 219 [2024-11-06 18:58:26,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:26,734 INFO L225 Difference]: With dead ends: 164126 [2024-11-06 18:58:26,734 INFO L226 Difference]: Without dead ends: 97704 [2024-11-06 18:58:26,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 218 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 18:58:26,776 INFO L432 NwaCegarLoop]: 375 mSDtfsCounter, 90 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:26,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 404 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:58:26,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97704 states. [2024-11-06 18:58:27,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97704 to 87738. [2024-11-06 18:58:27,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87738 states, 87737 states have (on average 1.1103981216590493) internal successors, (97423), 87737 states have internal predecessors, (97423), 0 states have call successors, (0), 0 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 18:58:27,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87738 states to 87738 states and 97423 transitions. [2024-11-06 18:58:27,988 INFO L78 Accepts]: Start accepts. Automaton has 87738 states and 97423 transitions. Word has length 219 [2024-11-06 18:58:27,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:58:27,988 INFO L471 AbstractCegarLoop]: Abstraction has 87738 states and 97423 transitions. [2024-11-06 18:58:27,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 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 18:58:27,988 INFO L276 IsEmpty]: Start isEmpty. Operand 87738 states and 97423 transitions. [2024-11-06 18:58:28,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-06 18:58:28,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:28,000 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:28,014 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 18:58:28,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:58:28,201 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:28,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:28,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1779283026, now seen corresponding path program 1 times [2024-11-06 18:58:28,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:28,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583432151] [2024-11-06 18:58:28,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:28,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 102 proven. 6 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-06 18:58:28,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:28,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583432151] [2024-11-06 18:58:28,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583432151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:58:28,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027321365] [2024-11-06 18:58:28,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:28,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:58:28,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:58:28,712 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 18:58:28,714 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 18:58:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:28,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:58:28,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:58:29,045 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-06 18:58:29,045 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:58:29,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027321365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:29,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:58:29,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 18:58:29,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532020745] [2024-11-06 18:58:29,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:29,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:58:29,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:29,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:58:29,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:58:29,047 INFO L87 Difference]: Start difference. First operand 87738 states and 97423 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 18:58:30,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:30,063 INFO L93 Difference]: Finished difference Result 206005 states and 229413 transitions. [2024-11-06 18:58:30,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:58:30,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 257 [2024-11-06 18:58:30,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:30,199 INFO L225 Difference]: With dead ends: 206005 [2024-11-06 18:58:30,199 INFO L226 Difference]: Without dead ends: 118269 [2024-11-06 18:58:30,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 256 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 18:58:30,252 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 96 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:30,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 209 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 18:58:30,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118269 states. [2024-11-06 18:58:31,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118269 to 101550. [2024-11-06 18:58:31,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101550 states, 101549 states have (on average 1.1165348747895105) internal successors, (113383), 101549 states have internal predecessors, (113383), 0 states have call successors, (0), 0 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 18:58:31,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101550 states to 101550 states and 113383 transitions. [2024-11-06 18:58:31,741 INFO L78 Accepts]: Start accepts. Automaton has 101550 states and 113383 transitions. Word has length 257 [2024-11-06 18:58:31,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:58:31,742 INFO L471 AbstractCegarLoop]: Abstraction has 101550 states and 113383 transitions. [2024-11-06 18:58:31,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 18:58:31,742 INFO L276 IsEmpty]: Start isEmpty. Operand 101550 states and 113383 transitions. [2024-11-06 18:58:31,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-06 18:58:31,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:31,758 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:31,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-06 18:58:31,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:58:31,959 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:31,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:31,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1588045261, now seen corresponding path program 1 times [2024-11-06 18:58:31,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:31,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243238613] [2024-11-06 18:58:31,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:31,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:58:32,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:32,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243238613] [2024-11-06 18:58:32,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243238613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:32,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:58:32,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:58:32,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053939402] [2024-11-06 18:58:32,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:32,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:58:32,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:32,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:58:32,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:58:32,583 INFO L87 Difference]: Start difference. First operand 101550 states and 113383 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 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 18:58:33,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:33,830 INFO L93 Difference]: Finished difference Result 220777 states and 247632 transitions. [2024-11-06 18:58:33,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:58:33,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 277 [2024-11-06 18:58:33,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:33,951 INFO L225 Difference]: With dead ends: 220777 [2024-11-06 18:58:33,951 INFO L226 Difference]: Without dead ends: 119229 [2024-11-06 18:58:33,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:58:33,988 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 124 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:33,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 345 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 18:58:34,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119229 states. [2024-11-06 18:58:35,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119229 to 114948. [2024-11-06 18:58:35,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114948 states, 114947 states have (on average 1.1194724525215969) internal successors, (128680), 114947 states have internal predecessors, (128680), 0 states have call successors, (0), 0 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 18:58:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114948 states to 114948 states and 128680 transitions. [2024-11-06 18:58:35,442 INFO L78 Accepts]: Start accepts. Automaton has 114948 states and 128680 transitions. Word has length 277 [2024-11-06 18:58:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:58:35,443 INFO L471 AbstractCegarLoop]: Abstraction has 114948 states and 128680 transitions. [2024-11-06 18:58:35,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 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 18:58:35,443 INFO L276 IsEmpty]: Start isEmpty. Operand 114948 states and 128680 transitions. [2024-11-06 18:58:35,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-11-06 18:58:35,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:35,469 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:35,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-06 18:58:35,469 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:35,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:35,469 INFO L85 PathProgramCache]: Analyzing trace with hash 587128153, now seen corresponding path program 1 times [2024-11-06 18:58:35,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:35,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526884407] [2024-11-06 18:58:35,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:35,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-06 18:58:36,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:36,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526884407] [2024-11-06 18:58:36,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526884407] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:58:36,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423316092] [2024-11-06 18:58:36,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:36,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:58:36,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:58:36,186 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 18:58:36,191 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 18:58:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:36,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:58:36,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:58:36,516 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-06 18:58:36,516 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:58:36,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423316092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:36,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:58:36,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 18:58:36,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137093414] [2024-11-06 18:58:36,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:36,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:58:36,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:36,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:58:36,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:58:36,520 INFO L87 Difference]: Start difference. First operand 114948 states and 128680 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 18:58:37,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:37,692 INFO L93 Difference]: Finished difference Result 229123 states and 256322 transitions. [2024-11-06 18:58:37,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:58:37,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 321 [2024-11-06 18:58:37,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:37,827 INFO L225 Difference]: With dead ends: 229123 [2024-11-06 18:58:37,827 INFO L226 Difference]: Without dead ends: 114177 [2024-11-06 18:58:37,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 320 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 18:58:37,880 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 90 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:37,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 392 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:58:37,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114177 states. [2024-11-06 18:58:39,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114177 to 112106. [2024-11-06 18:58:39,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112106 states, 112105 states have (on average 1.1128763213059185) internal successors, (124759), 112105 states have internal predecessors, (124759), 0 states have call successors, (0), 0 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 18:58:39,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112106 states to 112106 states and 124759 transitions. [2024-11-06 18:58:39,400 INFO L78 Accepts]: Start accepts. Automaton has 112106 states and 124759 transitions. Word has length 321 [2024-11-06 18:58:39,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:58:39,400 INFO L471 AbstractCegarLoop]: Abstraction has 112106 states and 124759 transitions. [2024-11-06 18:58:39,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 18:58:39,401 INFO L276 IsEmpty]: Start isEmpty. Operand 112106 states and 124759 transitions. [2024-11-06 18:58:39,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-06 18:58:39,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:39,431 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:39,450 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 18:58:39,632 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,SelfDestructingSolverStorable15 [2024-11-06 18:58:39,632 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:39,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:39,633 INFO L85 PathProgramCache]: Analyzing trace with hash 137607916, now seen corresponding path program 1 times [2024-11-06 18:58:39,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:39,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292719877] [2024-11-06 18:58:39,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:39,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:39,866 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-06 18:58:39,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:39,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292719877] [2024-11-06 18:58:39,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292719877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:39,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:58:39,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:58:39,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240789923] [2024-11-06 18:58:39,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:39,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:58:39,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:39,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:58:39,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:58:39,868 INFO L87 Difference]: Start difference. First operand 112106 states and 124759 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 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 18:58:41,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:41,140 INFO L93 Difference]: Finished difference Result 195759 states and 217273 transitions. [2024-11-06 18:58:41,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:58:41,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 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 335 [2024-11-06 18:58:41,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:41,224 INFO L225 Difference]: With dead ends: 195759 [2024-11-06 18:58:41,224 INFO L226 Difference]: Without dead ends: 83655 [2024-11-06 18:58:41,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:58:41,265 INFO L432 NwaCegarLoop]: 344 mSDtfsCounter, 240 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:41,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 373 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 18:58:41,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83655 states. [2024-11-06 18:58:42,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83655 to 82411. [2024-11-06 18:58:42,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82411 states, 82410 states have (on average 1.0975367067103508) internal successors, (90448), 82410 states have internal predecessors, (90448), 0 states have call successors, (0), 0 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 18:58:42,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82411 states to 82411 states and 90448 transitions. [2024-11-06 18:58:42,278 INFO L78 Accepts]: Start accepts. Automaton has 82411 states and 90448 transitions. Word has length 335 [2024-11-06 18:58:42,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:58:42,279 INFO L471 AbstractCegarLoop]: Abstraction has 82411 states and 90448 transitions. [2024-11-06 18:58:42,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 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 18:58:42,279 INFO L276 IsEmpty]: Start isEmpty. Operand 82411 states and 90448 transitions. [2024-11-06 18:58:42,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-06 18:58:42,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:42,300 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:42,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-06 18:58:42,300 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:42,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:42,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1465687166, now seen corresponding path program 1 times [2024-11-06 18:58:42,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:42,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838855211] [2024-11-06 18:58:42,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:42,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 473 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-06 18:58:42,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:42,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838855211] [2024-11-06 18:58:42,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838855211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:42,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:58:42,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:58:42,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693328135] [2024-11-06 18:58:42,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:42,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:58:42,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:42,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:58:42,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:58:42,915 INFO L87 Difference]: Start difference. First operand 82411 states and 90448 transitions. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 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 18:58:44,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:44,052 INFO L93 Difference]: Finished difference Result 235423 states and 258468 transitions. [2024-11-06 18:58:44,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:58:44,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 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 436 [2024-11-06 18:58:44,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:44,218 INFO L225 Difference]: With dead ends: 235423 [2024-11-06 18:58:44,218 INFO L226 Difference]: Without dead ends: 153014 [2024-11-06 18:58:44,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:58:44,290 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 411 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:44,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 534 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 18:58:44,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153014 states. [2024-11-06 18:58:46,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153014 to 146285. [2024-11-06 18:58:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146285 states, 146284 states have (on average 1.09813786880315) internal successors, (160640), 146284 states have internal predecessors, (160640), 0 states have call successors, (0), 0 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 18:58:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146285 states to 146285 states and 160640 transitions. [2024-11-06 18:58:46,361 INFO L78 Accepts]: Start accepts. Automaton has 146285 states and 160640 transitions. Word has length 436 [2024-11-06 18:58:46,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:58:46,362 INFO L471 AbstractCegarLoop]: Abstraction has 146285 states and 160640 transitions. [2024-11-06 18:58:46,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 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 18:58:46,362 INFO L276 IsEmpty]: Start isEmpty. Operand 146285 states and 160640 transitions. [2024-11-06 18:58:46,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-06 18:58:46,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:46,390 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:46,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-06 18:58:46,390 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:46,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:46,391 INFO L85 PathProgramCache]: Analyzing trace with hash 267208713, now seen corresponding path program 1 times [2024-11-06 18:58:46,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:46,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111971268] [2024-11-06 18:58:46,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:46,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-11-06 18:58:46,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:46,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111971268] [2024-11-06 18:58:46,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111971268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:46,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:58:46,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:58:46,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079035670] [2024-11-06 18:58:46,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:46,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:58:46,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:46,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:58:46,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:58:46,950 INFO L87 Difference]: Start difference. First operand 146285 states and 160640 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 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 18:58:48,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:48,424 INFO L93 Difference]: Finished difference Result 303808 states and 333400 transitions. [2024-11-06 18:58:48,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:58:48,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 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 476 [2024-11-06 18:58:48,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:48,603 INFO L225 Difference]: With dead ends: 303808 [2024-11-06 18:58:48,603 INFO L226 Difference]: Without dead ends: 157525 [2024-11-06 18:58:48,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:58:48,661 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 217 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:48,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 394 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 18:58:48,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157525 states. [2024-11-06 18:58:50,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157525 to 153796. [2024-11-06 18:58:50,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153796 states, 153795 states have (on average 1.0956923176956337) internal successors, (168512), 153795 states have internal predecessors, (168512), 0 states have call successors, (0), 0 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 18:58:51,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153796 states to 153796 states and 168512 transitions. [2024-11-06 18:58:51,096 INFO L78 Accepts]: Start accepts. Automaton has 153796 states and 168512 transitions. Word has length 476 [2024-11-06 18:58:51,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:58:51,097 INFO L471 AbstractCegarLoop]: Abstraction has 153796 states and 168512 transitions. [2024-11-06 18:58:51,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 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 18:58:51,097 INFO L276 IsEmpty]: Start isEmpty. Operand 153796 states and 168512 transitions. [2024-11-06 18:58:51,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2024-11-06 18:58:51,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:58:51,140 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:58:51,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-06 18:58:51,140 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:58:51,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:58:51,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1045426388, now seen corresponding path program 1 times [2024-11-06 18:58:51,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:58:51,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059517057] [2024-11-06 18:58:51,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:51,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:58:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 606 proven. 18 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-06 18:58:51,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:58:51,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059517057] [2024-11-06 18:58:51,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059517057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:58:51,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741297501] [2024-11-06 18:58:51,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:58:51,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:58:51,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:58:51,965 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 18:58:51,967 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 18:58:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:58:52,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:58:52,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:58:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 503 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-11-06 18:58:52,405 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:58:52,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741297501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:58:52,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:58:52,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-06 18:58:52,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746237675] [2024-11-06 18:58:52,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:58:52,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:58:52,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:58:52,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:58:52,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:58:52,407 INFO L87 Difference]: Start difference. First operand 153796 states and 168512 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 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 18:58:53,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:58:53,721 INFO L93 Difference]: Finished difference Result 436968 states and 478967 transitions. [2024-11-06 18:58:53,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:58:53,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 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 519 [2024-11-06 18:58:53,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:58:54,070 INFO L225 Difference]: With dead ends: 436968 [2024-11-06 18:58:54,071 INFO L226 Difference]: Without dead ends: 283174 [2024-11-06 18:58:54,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:58:54,184 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 235 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:58:54,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 592 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:58:54,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283174 states. [2024-11-06 18:58:57,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283174 to 283158. [2024-11-06 18:58:57,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283158 states, 283157 states have (on average 1.096049188259517) internal successors, (310354), 283157 states have internal predecessors, (310354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)