./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label27.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/Problem17_label27.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', '8f2d01fae317b054ddf6fc311dfbe1142cfd4012ffbce2b7f37ce8e1b21b188d'] 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/Problem17_label27.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 8f2d01fae317b054ddf6fc311dfbe1142cfd4012ffbce2b7f37ce8e1b21b188d --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 20:06:26,525 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 20:06:26,596 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 20:06:26,603 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 20:06:26,603 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 20:06:26,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 20:06:26,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 20:06:26,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 20:06:26,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 20:06:26,617 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 20:06:26,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 20:06:26,617 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 20:06:26,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 20:06:26,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 20:06:26,618 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 20:06:26,618 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 20:06:26,618 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 20:06:26,618 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 20:06:26,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 20:06:26,618 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 20:06:26,618 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 20:06:26,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 20:06:26,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 20:06:26,619 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 20:06:26,619 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 20:06:26,619 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 20:06:26,619 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 20:06:26,619 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 20:06:26,619 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 20:06:26,619 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 20:06:26,619 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 20:06:26,619 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 20:06:26,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 20:06:26,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 20:06:26,620 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 20:06:26,620 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 20:06:26,620 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 20:06:26,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 20:06:26,620 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 20:06:26,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 20:06:26,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 20:06:26,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 20:06:26,620 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 -> 8f2d01fae317b054ddf6fc311dfbe1142cfd4012ffbce2b7f37ce8e1b21b188d [2024-11-06 20:06:26,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 20:06:26,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 20:06:26,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 20:06:26,846 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 20:06:26,846 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 20:06:26,846 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label27.c [2024-11-06 20:06:28,016 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 20:06:28,464 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 20:06:28,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label27.c [2024-11-06 20:06:28,490 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b575982a7/b7635b099638494895bec8e3dffda5ed/FLAGf3626b449 [2024-11-06 20:06:28,503 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b575982a7/b7635b099638494895bec8e3dffda5ed [2024-11-06 20:06:28,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 20:06:28,507 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 20:06:28,509 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 20:06:28,509 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 20:06:28,513 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 20:06:28,513 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:06:28" (1/1) ... [2024-11-06 20:06:28,514 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d13d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:28, skipping insertion in model container [2024-11-06 20:06:28,514 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:06:28" (1/1) ... [2024-11-06 20:06:28,584 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 20:06:28,791 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/Problem17_label27.c[6203,6216] [2024-11-06 20:06:29,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 20:06:29,168 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 20:06:29,189 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/Problem17_label27.c[6203,6216] [2024-11-06 20:06:29,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 20:06:29,384 INFO L204 MainTranslator]: Completed translation [2024-11-06 20:06:29,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:29 WrapperNode [2024-11-06 20:06:29,385 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 20:06:29,386 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 20:06:29,387 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 20:06:29,387 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 20:06:29,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:29" (1/1) ... [2024-11-06 20:06:29,425 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:29" (1/1) ... [2024-11-06 20:06:29,623 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-06 20:06:29,623 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 20:06:29,624 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 20:06:29,624 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 20:06:29,624 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 20:06:29,630 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:29" (1/1) ... [2024-11-06 20:06:29,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:29" (1/1) ... [2024-11-06 20:06:29,741 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:29" (1/1) ... [2024-11-06 20:06:29,846 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 20:06:29,846 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:29" (1/1) ... [2024-11-06 20:06:29,846 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:29" (1/1) ... [2024-11-06 20:06:29,994 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:29" (1/1) ... [2024-11-06 20:06:30,027 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:29" (1/1) ... [2024-11-06 20:06:30,060 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:29" (1/1) ... [2024-11-06 20:06:30,083 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:29" (1/1) ... [2024-11-06 20:06:30,138 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 20:06:30,140 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 20:06:30,140 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 20:06:30,140 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 20:06:30,141 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:29" (1/1) ... [2024-11-06 20:06:30,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 20:06:30,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:06:30,172 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 20:06:30,174 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 20:06:30,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 20:06:30,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 20:06:30,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 20:06:30,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 20:06:30,252 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 20:06:30,254 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 20:06:32,907 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-06 20:06:32,908 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 20:06:32,923 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 20:06:32,924 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 20:06:32,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:06:32 BoogieIcfgContainer [2024-11-06 20:06:32,924 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 20:06:32,926 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 20:06:32,926 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 20:06:32,929 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 20:06:32,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:06:28" (1/3) ... [2024-11-06 20:06:32,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b11843b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:06:32, skipping insertion in model container [2024-11-06 20:06:32,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:29" (2/3) ... [2024-11-06 20:06:32,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b11843b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:06:32, skipping insertion in model container [2024-11-06 20:06:32,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:06:32" (3/3) ... [2024-11-06 20:06:32,931 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label27.c [2024-11-06 20:06:32,941 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 20:06:32,941 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 20:06:32,995 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 20:06:33,006 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;@6fabf1aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 20:06:33,006 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 20:06:33,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states 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 20:06:33,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-06 20:06:33,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:33,027 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] [2024-11-06 20:06:33,027 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:33,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:33,031 INFO L85 PathProgramCache]: Analyzing trace with hash 751578873, now seen corresponding path program 1 times [2024-11-06 20:06:33,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:33,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419409613] [2024-11-06 20:06:33,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:33,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:33,257 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 20:06:33,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:33,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419409613] [2024-11-06 20:06:33,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419409613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:33,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:33,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:06:33,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966993353] [2024-11-06 20:06:33,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:33,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:33,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:33,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:33,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:33,275 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:06:35,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:35,382 INFO L93 Difference]: Finished difference Result 1680 states and 3074 transitions. [2024-11-06 20:06:35,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:35,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-06 20:06:35,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:35,394 INFO L225 Difference]: With dead ends: 1680 [2024-11-06 20:06:35,394 INFO L226 Difference]: Without dead ends: 1011 [2024-11-06 20:06:35,398 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 20:06:35,400 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 540 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:35,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 220 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-06 20:06:35,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2024-11-06 20:06:35,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 996. [2024-11-06 20:06:35,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 1.735678391959799) internal successors, (1727), 995 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states 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 20:06:35,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1727 transitions. [2024-11-06 20:06:35,452 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1727 transitions. Word has length 41 [2024-11-06 20:06:35,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:35,453 INFO L471 AbstractCegarLoop]: Abstraction has 996 states and 1727 transitions. [2024-11-06 20:06:35,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:06:35,453 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1727 transitions. [2024-11-06 20:06:35,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-06 20:06:35,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:35,455 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 20:06:35,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 20:06:35,459 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:35,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:35,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1125860323, now seen corresponding path program 1 times [2024-11-06 20:06:35,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:35,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172422942] [2024-11-06 20:06:35,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:35,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:35,647 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:06:35,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:35,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172422942] [2024-11-06 20:06:35,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172422942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:35,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:35,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:06:35,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896599] [2024-11-06 20:06:35,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:35,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:35,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:35,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:35,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:35,649 INFO L87 Difference]: Start difference. First operand 996 states and 1727 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 20:06:37,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:37,501 INFO L93 Difference]: Finished difference Result 2871 states and 5025 transitions. [2024-11-06 20:06:37,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:37,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2024-11-06 20:06:37,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:37,513 INFO L225 Difference]: With dead ends: 2871 [2024-11-06 20:06:37,516 INFO L226 Difference]: Without dead ends: 1877 [2024-11-06 20:06:37,521 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 20:06:37,525 INFO L432 NwaCegarLoop]: 447 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:37,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 520 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-06 20:06:37,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2024-11-06 20:06:37,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1870. [2024-11-06 20:06:37,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 1.4719101123595506) internal successors, (2751), 1869 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states 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 20:06:37,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2751 transitions. [2024-11-06 20:06:37,606 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2751 transitions. Word has length 106 [2024-11-06 20:06:37,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:37,606 INFO L471 AbstractCegarLoop]: Abstraction has 1870 states and 2751 transitions. [2024-11-06 20:06:37,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 20:06:37,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2751 transitions. [2024-11-06 20:06:37,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-06 20:06:37,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:37,609 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 20:06:37,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 20:06:37,609 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:37,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:37,610 INFO L85 PathProgramCache]: Analyzing trace with hash 253179212, now seen corresponding path program 1 times [2024-11-06 20:06:37,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:37,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526834243] [2024-11-06 20:06:37,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:37,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:06:37,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:37,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526834243] [2024-11-06 20:06:37,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526834243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:37,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:37,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:06:37,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131294855] [2024-11-06 20:06:37,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:37,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:37,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:37,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:37,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:37,893 INFO L87 Difference]: Start difference. First operand 1870 states and 2751 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:06:39,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:39,870 INFO L93 Difference]: Finished difference Result 5454 states and 8039 transitions. [2024-11-06 20:06:39,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:39,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2024-11-06 20:06:39,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:39,883 INFO L225 Difference]: With dead ends: 5454 [2024-11-06 20:06:39,883 INFO L226 Difference]: Without dead ends: 3586 [2024-11-06 20:06:39,886 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 20:06:39,887 INFO L432 NwaCegarLoop]: 846 mSDtfsCounter, 453 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:39,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 914 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-06 20:06:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2024-11-06 20:06:39,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3583. [2024-11-06 20:06:39,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3582 states have (on average 1.3355667225013959) internal successors, (4784), 3582 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states 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 20:06:39,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 4784 transitions. [2024-11-06 20:06:39,950 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 4784 transitions. Word has length 111 [2024-11-06 20:06:39,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:39,951 INFO L471 AbstractCegarLoop]: Abstraction has 3583 states and 4784 transitions. [2024-11-06 20:06:39,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:06:39,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 4784 transitions. [2024-11-06 20:06:39,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-06 20:06:39,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:39,956 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 20:06:39,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 20:06:39,957 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:39,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:39,957 INFO L85 PathProgramCache]: Analyzing trace with hash -111791273, now seen corresponding path program 1 times [2024-11-06 20:06:39,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:39,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180648073] [2024-11-06 20:06:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:39,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:40,185 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:06:40,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:40,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180648073] [2024-11-06 20:06:40,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180648073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:40,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:40,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:06:40,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105391510] [2024-11-06 20:06:40,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:40,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:40,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:40,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:40,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:40,189 INFO L87 Difference]: Start difference. First operand 3583 states and 4784 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 20:06:41,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:41,946 INFO L93 Difference]: Finished difference Result 10571 states and 14108 transitions. [2024-11-06 20:06:41,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:41,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2024-11-06 20:06:41,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:41,962 INFO L225 Difference]: With dead ends: 10571 [2024-11-06 20:06:41,962 INFO L226 Difference]: Without dead ends: 5286 [2024-11-06 20:06:41,966 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 20:06:41,968 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:41,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-06 20:06:41,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2024-11-06 20:06:42,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 4434. [2024-11-06 20:06:42,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 1.2091134671779833) internal successors, (5360), 4433 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states 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 20:06:42,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 5360 transitions. [2024-11-06 20:06:42,031 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 5360 transitions. Word has length 152 [2024-11-06 20:06:42,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:42,032 INFO L471 AbstractCegarLoop]: Abstraction has 4434 states and 5360 transitions. [2024-11-06 20:06:42,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 20:06:42,033 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 5360 transitions. [2024-11-06 20:06:42,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-06 20:06:42,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:42,036 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:06:42,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 20:06:42,036 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:42,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:42,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1925292906, now seen corresponding path program 1 times [2024-11-06 20:06:42,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:42,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583262598] [2024-11-06 20:06:42,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:42,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:06:42,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:42,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583262598] [2024-11-06 20:06:42,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583262598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:42,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:42,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:06:42,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267360545] [2024-11-06 20:06:42,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:42,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:42,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:42,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:42,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:42,299 INFO L87 Difference]: Start difference. First operand 4434 states and 5360 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 20:06:43,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:43,707 INFO L93 Difference]: Finished difference Result 11414 states and 14015 transitions. [2024-11-06 20:06:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:43,708 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 193 [2024-11-06 20:06:43,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:43,727 INFO L225 Difference]: With dead ends: 11414 [2024-11-06 20:06:43,727 INFO L226 Difference]: Without dead ends: 6982 [2024-11-06 20:06:43,733 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 20:06:43,734 INFO L432 NwaCegarLoop]: 727 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:43,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 785 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-06 20:06:43,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6982 states. [2024-11-06 20:06:43,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6982 to 6982. [2024-11-06 20:06:43,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6982 states, 6981 states have (on average 1.1834980661796304) internal successors, (8262), 6981 states have internal predecessors, (8262), 0 states have call successors, (0), 0 states 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 20:06:43,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6982 states to 6982 states and 8262 transitions. [2024-11-06 20:06:43,933 INFO L78 Accepts]: Start accepts. Automaton has 6982 states and 8262 transitions. Word has length 193 [2024-11-06 20:06:43,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:43,934 INFO L471 AbstractCegarLoop]: Abstraction has 6982 states and 8262 transitions. [2024-11-06 20:06:43,934 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 20:06:43,934 INFO L276 IsEmpty]: Start isEmpty. Operand 6982 states and 8262 transitions. [2024-11-06 20:06:43,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-06 20:06:43,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:43,949 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:06:43,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 20:06:43,950 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:43,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:43,950 INFO L85 PathProgramCache]: Analyzing trace with hash 18373913, now seen corresponding path program 1 times [2024-11-06 20:06:43,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:43,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072522555] [2024-11-06 20:06:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:43,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-06 20:06:44,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:44,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072522555] [2024-11-06 20:06:44,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072522555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:44,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:44,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:06:44,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952190083] [2024-11-06 20:06:44,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:44,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:44,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:44,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:44,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:44,318 INFO L87 Difference]: Start difference. First operand 6982 states and 8262 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 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 20:06:45,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:45,940 INFO L93 Difference]: Finished difference Result 17788 states and 21273 transitions. [2024-11-06 20:06:45,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:45,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 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 273 [2024-11-06 20:06:45,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:45,973 INFO L225 Difference]: With dead ends: 17788 [2024-11-06 20:06:45,974 INFO L226 Difference]: Without dead ends: 9958 [2024-11-06 20:06:45,980 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 20:06:45,981 INFO L432 NwaCegarLoop]: 788 mSDtfsCounter, 384 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:45,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 858 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-06 20:06:45,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9958 states. [2024-11-06 20:06:46,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9958 to 9958. [2024-11-06 20:06:46,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9958 states, 9957 states have (on average 1.1449231696294064) internal successors, (11400), 9957 states have internal predecessors, (11400), 0 states have call successors, (0), 0 states 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 20:06:46,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9958 states to 9958 states and 11400 transitions. [2024-11-06 20:06:46,088 INFO L78 Accepts]: Start accepts. Automaton has 9958 states and 11400 transitions. Word has length 273 [2024-11-06 20:06:46,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:46,089 INFO L471 AbstractCegarLoop]: Abstraction has 9958 states and 11400 transitions. [2024-11-06 20:06:46,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 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 20:06:46,089 INFO L276 IsEmpty]: Start isEmpty. Operand 9958 states and 11400 transitions. [2024-11-06 20:06:46,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-11-06 20:06:46,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:46,093 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-06 20:06:46,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-06 20:06:46,093 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:46,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:46,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1552604812, now seen corresponding path program 1 times [2024-11-06 20:06:46,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:46,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168663403] [2024-11-06 20:06:46,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:46,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-06 20:06:46,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:46,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168663403] [2024-11-06 20:06:46,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168663403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:46,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:46,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:06:46,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726578219] [2024-11-06 20:06:46,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:46,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:46,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:46,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:46,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:46,250 INFO L87 Difference]: Start difference. First operand 9958 states and 11400 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 20:06:47,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:47,788 INFO L93 Difference]: Finished difference Result 24168 states and 28009 transitions. [2024-11-06 20:06:47,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:47,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 313 [2024-11-06 20:06:47,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:47,810 INFO L225 Difference]: With dead ends: 24168 [2024-11-06 20:06:47,811 INFO L226 Difference]: Without dead ends: 14212 [2024-11-06 20:06:47,818 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 20:06:47,819 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 447 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:47,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 371 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-06 20:06:47,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14212 states. [2024-11-06 20:06:47,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14212 to 13351. [2024-11-06 20:06:47,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13351 states, 13350 states have (on average 1.1481647940074906) internal successors, (15328), 13350 states have internal predecessors, (15328), 0 states have call successors, (0), 0 states 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 20:06:48,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13351 states to 13351 states and 15328 transitions. [2024-11-06 20:06:48,023 INFO L78 Accepts]: Start accepts. Automaton has 13351 states and 15328 transitions. Word has length 313 [2024-11-06 20:06:48,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:48,023 INFO L471 AbstractCegarLoop]: Abstraction has 13351 states and 15328 transitions. [2024-11-06 20:06:48,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 20:06:48,023 INFO L276 IsEmpty]: Start isEmpty. Operand 13351 states and 15328 transitions. [2024-11-06 20:06:48,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-11-06 20:06:48,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:48,038 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:48,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 20:06:48,038 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:48,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:48,039 INFO L85 PathProgramCache]: Analyzing trace with hash 649706724, now seen corresponding path program 1 times [2024-11-06 20:06:48,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:48,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035873231] [2024-11-06 20:06:48,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:48,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:48,431 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:06:48,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:48,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035873231] [2024-11-06 20:06:48,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035873231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:48,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:48,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:06:48,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129955832] [2024-11-06 20:06:48,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:48,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:06:48,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:48,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:06:48,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:06:48,436 INFO L87 Difference]: Start difference. First operand 13351 states and 15328 transitions. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 20:06:50,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:50,754 INFO L93 Difference]: Finished difference Result 33117 states and 38117 transitions. [2024-11-06 20:06:50,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:06:50,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 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 380 [2024-11-06 20:06:50,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:50,782 INFO L225 Difference]: With dead ends: 33117 [2024-11-06 20:06:50,782 INFO L226 Difference]: Without dead ends: 19343 [2024-11-06 20:06:50,790 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 20:06:50,791 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 635 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 2405 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 2730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 2405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:50,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 226 Invalid, 2730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 2405 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-06 20:06:50,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19343 states. [2024-11-06 20:06:50,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19343 to 19339. [2024-11-06 20:06:50,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19339 states, 19338 states have (on average 1.1557555072913435) internal successors, (22350), 19338 states have internal predecessors, (22350), 0 states have call successors, (0), 0 states 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 20:06:50,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19339 states to 19339 states and 22350 transitions. [2024-11-06 20:06:50,952 INFO L78 Accepts]: Start accepts. Automaton has 19339 states and 22350 transitions. Word has length 380 [2024-11-06 20:06:50,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:50,952 INFO L471 AbstractCegarLoop]: Abstraction has 19339 states and 22350 transitions. [2024-11-06 20:06:50,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 20:06:50,952 INFO L276 IsEmpty]: Start isEmpty. Operand 19339 states and 22350 transitions. [2024-11-06 20:06:50,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2024-11-06 20:06:50,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:50,960 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:50,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-06 20:06:50,961 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:50,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:50,961 INFO L85 PathProgramCache]: Analyzing trace with hash 2143535130, now seen corresponding path program 1 times [2024-11-06 20:06:50,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:50,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194553092] [2024-11-06 20:06:50,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:50,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:51,244 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-06 20:06:51,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:51,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194553092] [2024-11-06 20:06:51,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194553092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:51,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:51,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:06:51,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933301129] [2024-11-06 20:06:51,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:51,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:51,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:51,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:51,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:51,247 INFO L87 Difference]: Start difference. First operand 19339 states and 22350 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 20:06:53,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:53,223 INFO L93 Difference]: Finished difference Result 50180 states and 58000 transitions. [2024-11-06 20:06:53,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:53,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 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 402 [2024-11-06 20:06:53,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:53,310 INFO L225 Difference]: With dead ends: 50180 [2024-11-06 20:06:53,310 INFO L226 Difference]: Without dead ends: 30843 [2024-11-06 20:06:53,346 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 20:06:53,349 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 504 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:53,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 270 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-06 20:06:53,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30843 states. [2024-11-06 20:06:53,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30843 to 30824. [2024-11-06 20:06:53,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30824 states, 30823 states have (on average 1.141095934853843) internal successors, (35172), 30823 states have internal predecessors, (35172), 0 states have call successors, (0), 0 states 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 20:06:53,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30824 states to 30824 states and 35172 transitions. [2024-11-06 20:06:53,801 INFO L78 Accepts]: Start accepts. Automaton has 30824 states and 35172 transitions. Word has length 402 [2024-11-06 20:06:53,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:53,802 INFO L471 AbstractCegarLoop]: Abstraction has 30824 states and 35172 transitions. [2024-11-06 20:06:53,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 20:06:53,802 INFO L276 IsEmpty]: Start isEmpty. Operand 30824 states and 35172 transitions. [2024-11-06 20:06:53,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-11-06 20:06:53,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:53,813 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:53,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-06 20:06:53,813 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:53,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:53,814 INFO L85 PathProgramCache]: Analyzing trace with hash 376628203, now seen corresponding path program 1 times [2024-11-06 20:06:53,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:53,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481687269] [2024-11-06 20:06:53,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:53,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:54,296 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 222 proven. 82 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-06 20:06:54,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:54,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481687269] [2024-11-06 20:06:54,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481687269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 20:06:54,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60768948] [2024-11-06 20:06:54,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:54,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:06:54,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:06:54,300 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 20:06:54,302 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 20:06:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:54,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 20:06:54,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 20:06:55,028 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 222 proven. 82 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-06 20:06:55,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 20:06:55,386 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-06 20:06:55,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60768948] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-06 20:06:55,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-06 20:06:55,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-06 20:06:55,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321516061] [2024-11-06 20:06:55,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:55,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:06:55,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:55,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:06:55,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-06 20:06:55,389 INFO L87 Difference]: Start difference. First operand 30824 states and 35172 transitions. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states 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 20:06:58,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:58,071 INFO L93 Difference]: Finished difference Result 88939 states and 101084 transitions. [2024-11-06 20:06:58,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:06:58,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 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 409 [2024-11-06 20:06:58,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:58,203 INFO L225 Difference]: With dead ends: 88939 [2024-11-06 20:06:58,204 INFO L226 Difference]: Without dead ends: 56413 [2024-11-06 20:06:58,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 815 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-06 20:06:58,256 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 728 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2359 mSolverCounterSat, 551 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 2910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 2359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:58,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 209 Invalid, 2910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 2359 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-06 20:06:58,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56413 states. [2024-11-06 20:06:58,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56413 to 52153. [2024-11-06 20:06:58,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52153 states, 52152 states have (on average 1.1363130848289615) internal successors, (59261), 52152 states have internal predecessors, (59261), 0 states have call successors, (0), 0 states 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 20:06:58,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52153 states to 52153 states and 59261 transitions. [2024-11-06 20:06:58,986 INFO L78 Accepts]: Start accepts. Automaton has 52153 states and 59261 transitions. Word has length 409 [2024-11-06 20:06:58,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:58,987 INFO L471 AbstractCegarLoop]: Abstraction has 52153 states and 59261 transitions. [2024-11-06 20:06:58,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states 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 20:06:58,987 INFO L276 IsEmpty]: Start isEmpty. Operand 52153 states and 59261 transitions. [2024-11-06 20:06:58,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-11-06 20:06:58,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:58,994 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:06:59,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 20:06:59,196 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,SelfDestructingSolverStorable9 [2024-11-06 20:06:59,197 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:59,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:59,198 INFO L85 PathProgramCache]: Analyzing trace with hash -899581652, now seen corresponding path program 1 times [2024-11-06 20:06:59,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:59,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609822132] [2024-11-06 20:06:59,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:59,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-06 20:06:59,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:59,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609822132] [2024-11-06 20:06:59,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609822132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:59,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:59,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:06:59,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775492262] [2024-11-06 20:06:59,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:59,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:59,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:59,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:59,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:59,489 INFO L87 Difference]: Start difference. First operand 52153 states and 59261 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 20:07:01,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:01,254 INFO L93 Difference]: Finished difference Result 118761 states and 135002 transitions. [2024-11-06 20:07:01,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:01,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 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 445 [2024-11-06 20:07:01,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:01,326 INFO L225 Difference]: With dead ends: 118761 [2024-11-06 20:07:01,327 INFO L226 Difference]: Without dead ends: 60215 [2024-11-06 20:07:01,361 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 20:07:01,362 INFO L432 NwaCegarLoop]: 696 mSDtfsCounter, 498 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:01,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 748 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-06 20:07:01,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60215 states. [2024-11-06 20:07:02,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60215 to 60207. [2024-11-06 20:07:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60207 states, 60206 states have (on average 1.1200046506992658) internal successors, (67431), 60206 states have internal predecessors, (67431), 0 states have call successors, (0), 0 states 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 20:07:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60207 states to 60207 states and 67431 transitions. [2024-11-06 20:07:02,298 INFO L78 Accepts]: Start accepts. Automaton has 60207 states and 67431 transitions. Word has length 445 [2024-11-06 20:07:02,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:02,299 INFO L471 AbstractCegarLoop]: Abstraction has 60207 states and 67431 transitions. [2024-11-06 20:07:02,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 20:07:02,299 INFO L276 IsEmpty]: Start isEmpty. Operand 60207 states and 67431 transitions. [2024-11-06 20:07:02,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-11-06 20:07:02,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:02,306 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:07:02,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-06 20:07:02,306 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:02,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:02,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1845596096, now seen corresponding path program 1 times [2024-11-06 20:07:02,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:02,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266938367] [2024-11-06 20:07:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:02,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 603 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-06 20:07:03,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:03,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266938367] [2024-11-06 20:07:03,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266938367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:03,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:03,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 20:07:03,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776492772] [2024-11-06 20:07:03,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:03,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:07:03,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:03,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:07:03,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:07:03,133 INFO L87 Difference]: Start difference. First operand 60207 states and 67431 transitions. Second operand has 4 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 20:07:05,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:05,763 INFO L93 Difference]: Finished difference Result 157943 states and 176490 transitions. [2024-11-06 20:07:05,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:07:05,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 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 447 [2024-11-06 20:07:05,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:05,872 INFO L225 Difference]: With dead ends: 157943 [2024-11-06 20:07:05,872 INFO L226 Difference]: Without dead ends: 97738 [2024-11-06 20:07:05,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 20:07:05,916 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 769 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:05,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 181 Invalid, 2870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-06 20:07:05,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97738 states. [2024-11-06 20:07:07,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97738 to 93051. [2024-11-06 20:07:07,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93051 states, 93050 states have (on average 1.1130789897904352) internal successors, (103572), 93050 states have internal predecessors, (103572), 0 states have call successors, (0), 0 states 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 20:07:07,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93051 states to 93051 states and 103572 transitions. [2024-11-06 20:07:07,191 INFO L78 Accepts]: Start accepts. Automaton has 93051 states and 103572 transitions. Word has length 447 [2024-11-06 20:07:07,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:07,191 INFO L471 AbstractCegarLoop]: Abstraction has 93051 states and 103572 transitions. [2024-11-06 20:07:07,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 20:07:07,192 INFO L276 IsEmpty]: Start isEmpty. Operand 93051 states and 103572 transitions. [2024-11-06 20:07:07,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2024-11-06 20:07:07,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:07,200 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-06 20:07:07,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-06 20:07:07,200 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:07,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:07,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1861468284, now seen corresponding path program 1 times [2024-11-06 20:07:07,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:07,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112937402] [2024-11-06 20:07:07,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:07,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:07,834 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 373 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-06 20:07:07,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:07,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112937402] [2024-11-06 20:07:07,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112937402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:07,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:07,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 20:07:07,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933274249] [2024-11-06 20:07:07,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:07,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:07:07,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:07,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:07:07,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:07:07,839 INFO L87 Difference]: Start difference. First operand 93051 states and 103572 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 20:07:10,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:10,194 INFO L93 Difference]: Finished difference Result 201070 states and 223016 transitions. [2024-11-06 20:07:10,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:07:10,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 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 449 [2024-11-06 20:07:10,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:10,312 INFO L225 Difference]: With dead ends: 201070 [2024-11-06 20:07:10,312 INFO L226 Difference]: Without dead ends: 108021 [2024-11-06 20:07:10,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 20:07:10,366 INFO L432 NwaCegarLoop]: 675 mSDtfsCounter, 868 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2243 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 2243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:10,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 759 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-06 20:07:10,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108021 states. [2024-11-06 20:07:11,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108021 to 93051. [2024-11-06 20:07:11,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93051 states, 93050 states have (on average 1.112713594841483) internal successors, (103538), 93050 states have internal predecessors, (103538), 0 states have call successors, (0), 0 states 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 20:07:11,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93051 states to 93051 states and 103538 transitions. [2024-11-06 20:07:11,627 INFO L78 Accepts]: Start accepts. Automaton has 93051 states and 103538 transitions. Word has length 449 [2024-11-06 20:07:11,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:11,627 INFO L471 AbstractCegarLoop]: Abstraction has 93051 states and 103538 transitions. [2024-11-06 20:07:11,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 20:07:11,627 INFO L276 IsEmpty]: Start isEmpty. Operand 93051 states and 103538 transitions. [2024-11-06 20:07:11,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2024-11-06 20:07:11,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:11,639 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:07:11,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-06 20:07:11,639 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:11,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:11,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1200421190, now seen corresponding path program 1 times [2024-11-06 20:07:11,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:11,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388584068] [2024-11-06 20:07:11,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:11,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-06 20:07:12,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:12,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388584068] [2024-11-06 20:07:12,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388584068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:12,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:12,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:12,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802060457] [2024-11-06 20:07:12,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:12,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:12,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:12,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:12,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:12,269 INFO L87 Difference]: Start difference. First operand 93051 states and 103538 transitions. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states 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 20:07:14,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:14,029 INFO L93 Difference]: Finished difference Result 193777 states and 215976 transitions. [2024-11-06 20:07:14,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:14,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 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 490 [2024-11-06 20:07:14,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:14,138 INFO L225 Difference]: With dead ends: 193777 [2024-11-06 20:07:14,139 INFO L226 Difference]: Without dead ends: 100298 [2024-11-06 20:07:14,189 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 20:07:14,190 INFO L432 NwaCegarLoop]: 731 mSDtfsCounter, 336 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:14,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 796 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-06 20:07:14,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100298 states. [2024-11-06 20:07:15,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100298 to 96887. [2024-11-06 20:07:15,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96887 states, 96886 states have (on average 1.1097372169353674) internal successors, (107518), 96886 states have internal predecessors, (107518), 0 states have call successors, (0), 0 states 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 20:07:15,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96887 states to 96887 states and 107518 transitions. [2024-11-06 20:07:15,651 INFO L78 Accepts]: Start accepts. Automaton has 96887 states and 107518 transitions. Word has length 490 [2024-11-06 20:07:15,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:15,652 INFO L471 AbstractCegarLoop]: Abstraction has 96887 states and 107518 transitions. [2024-11-06 20:07:15,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states 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 20:07:15,652 INFO L276 IsEmpty]: Start isEmpty. Operand 96887 states and 107518 transitions. [2024-11-06 20:07:15,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2024-11-06 20:07:15,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:15,660 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:07:15,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-06 20:07:15,661 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:15,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:15,661 INFO L85 PathProgramCache]: Analyzing trace with hash -2036194230, now seen corresponding path program 1 times [2024-11-06 20:07:15,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:15,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869027584] [2024-11-06 20:07:15,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:15,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 307 proven. 82 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-06 20:07:16,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:16,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869027584] [2024-11-06 20:07:16,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869027584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 20:07:16,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090651954] [2024-11-06 20:07:16,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:16,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:07:16,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:07:16,593 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 20:07:16,594 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 20:07:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:16,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 20:07:16,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 20:07:16,880 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-06 20:07:16,880 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 20:07:16,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090651954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:16,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 20:07:16,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 20:07:16,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219696212] [2024-11-06 20:07:16,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:16,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:16,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:16,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:16,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 20:07:16,882 INFO L87 Difference]: Start difference. First operand 96887 states and 107518 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 20:07:18,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:18,978 INFO L93 Difference]: Finished difference Result 207845 states and 231025 transitions. [2024-11-06 20:07:18,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:18,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 503 [2024-11-06 20:07:18,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:19,094 INFO L225 Difference]: With dead ends: 207845 [2024-11-06 20:07:19,094 INFO L226 Difference]: Without dead ends: 106272 [2024-11-06 20:07:19,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 20:07:19,132 INFO L432 NwaCegarLoop]: 623 mSDtfsCounter, 490 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:19,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 669 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-06 20:07:19,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106272 states. [2024-11-06 20:07:20,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106272 to 106262. [2024-11-06 20:07:20,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106262 states, 106261 states have (on average 1.110275642051176) internal successors, (117979), 106261 states have internal predecessors, (117979), 0 states have call successors, (0), 0 states 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 20:07:20,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106262 states to 106262 states and 117979 transitions. [2024-11-06 20:07:20,612 INFO L78 Accepts]: Start accepts. Automaton has 106262 states and 117979 transitions. Word has length 503 [2024-11-06 20:07:20,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:20,613 INFO L471 AbstractCegarLoop]: Abstraction has 106262 states and 117979 transitions. [2024-11-06 20:07:20,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 20:07:20,613 INFO L276 IsEmpty]: Start isEmpty. Operand 106262 states and 117979 transitions. [2024-11-06 20:07:20,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2024-11-06 20:07:20,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:20,626 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:07:20,639 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 20:07:20,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-06 20:07:20,827 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:20,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:20,828 INFO L85 PathProgramCache]: Analyzing trace with hash 272010830, now seen corresponding path program 1 times [2024-11-06 20:07:20,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:20,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377499370] [2024-11-06 20:07:20,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:20,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:21,488 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-06 20:07:21,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:21,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377499370] [2024-11-06 20:07:21,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377499370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:21,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:21,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:21,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277668510] [2024-11-06 20:07:21,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:21,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:21,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:21,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:21,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:21,491 INFO L87 Difference]: Start difference. First operand 106262 states and 117979 transitions. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 20:07:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:23,659 INFO L93 Difference]: Finished difference Result 226149 states and 251122 transitions. [2024-11-06 20:07:23,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:23,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 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 518 [2024-11-06 20:07:23,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:23,816 INFO L225 Difference]: With dead ends: 226149 [2024-11-06 20:07:23,816 INFO L226 Difference]: Without dead ends: 119889 [2024-11-06 20:07:23,853 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 20:07:23,853 INFO L432 NwaCegarLoop]: 303 mSDtfsCounter, 346 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:23,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 360 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-06 20:07:23,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119889 states. [2024-11-06 20:07:25,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119889 to 111793. [2024-11-06 20:07:25,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111793 states, 111792 states have (on average 1.1096321740374981) internal successors, (124048), 111792 states have internal predecessors, (124048), 0 states have call successors, (0), 0 states 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 20:07:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111793 states to 111793 states and 124048 transitions. [2024-11-06 20:07:25,314 INFO L78 Accepts]: Start accepts. Automaton has 111793 states and 124048 transitions. Word has length 518 [2024-11-06 20:07:25,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:25,315 INFO L471 AbstractCegarLoop]: Abstraction has 111793 states and 124048 transitions. [2024-11-06 20:07:25,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 20:07:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 111793 states and 124048 transitions. [2024-11-06 20:07:25,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-11-06 20:07:25,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:25,329 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:07:25,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-06 20:07:25,329 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:25,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:25,330 INFO L85 PathProgramCache]: Analyzing trace with hash -229153588, now seen corresponding path program 1 times [2024-11-06 20:07:25,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:25,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674075016] [2024-11-06 20:07:25,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:25,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 373 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-06 20:07:25,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:25,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674075016] [2024-11-06 20:07:25,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674075016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:25,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:25,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:25,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66803549] [2024-11-06 20:07:25,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:25,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:25,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:25,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:25,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:25,696 INFO L87 Difference]: Start difference. First operand 111793 states and 124048 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 20:07:27,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:27,686 INFO L93 Difference]: Finished difference Result 231683 states and 256680 transitions. [2024-11-06 20:07:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:27,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 534 [2024-11-06 20:07:27,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:27,821 INFO L225 Difference]: With dead ends: 231683 [2024-11-06 20:07:27,821 INFO L226 Difference]: Without dead ends: 119892 [2024-11-06 20:07:27,880 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 20:07:27,880 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 420 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:27,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 349 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-06 20:07:27,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119892 states. [2024-11-06 20:07:29,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119892 to 111793. [2024-11-06 20:07:29,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111793 states, 111792 states have (on average 1.1094711607270646) internal successors, (124030), 111792 states have internal predecessors, (124030), 0 states have call successors, (0), 0 states 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 20:07:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111793 states to 111793 states and 124030 transitions. [2024-11-06 20:07:29,378 INFO L78 Accepts]: Start accepts. Automaton has 111793 states and 124030 transitions. Word has length 534 [2024-11-06 20:07:29,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:29,381 INFO L471 AbstractCegarLoop]: Abstraction has 111793 states and 124030 transitions. [2024-11-06 20:07:29,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 20:07:29,382 INFO L276 IsEmpty]: Start isEmpty. Operand 111793 states and 124030 transitions. [2024-11-06 20:07:29,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2024-11-06 20:07:29,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:29,395 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:07:29,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-06 20:07:29,396 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:29,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:29,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1444719469, now seen corresponding path program 1 times [2024-11-06 20:07:29,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:29,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006555275] [2024-11-06 20:07:29,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:29,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:29,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 755 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-11-06 20:07:29,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:29,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006555275] [2024-11-06 20:07:29,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006555275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:29,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:29,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:29,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863447153] [2024-11-06 20:07:29,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:29,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:29,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:29,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:29,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:29,877 INFO L87 Difference]: Start difference. First operand 111793 states and 124030 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states 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 20:07:31,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:31,876 INFO L93 Difference]: Finished difference Result 239350 states and 265027 transitions. [2024-11-06 20:07:31,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:31,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 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 581 [2024-11-06 20:07:31,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:32,069 INFO L225 Difference]: With dead ends: 239350 [2024-11-06 20:07:32,069 INFO L226 Difference]: Without dead ends: 127559 [2024-11-06 20:07:32,149 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 20:07:32,149 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 359 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:32,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 327 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-06 20:07:32,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127559 states. [2024-11-06 20:07:33,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127559 to 112643. [2024-11-06 20:07:33,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112643 states, 112642 states have (on average 1.0998739368974273) internal successors, (123892), 112642 states have internal predecessors, (123892), 0 states have call successors, (0), 0 states 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 20:07:33,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112643 states to 112643 states and 123892 transitions. [2024-11-06 20:07:33,656 INFO L78 Accepts]: Start accepts. Automaton has 112643 states and 123892 transitions. Word has length 581 [2024-11-06 20:07:33,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:33,657 INFO L471 AbstractCegarLoop]: Abstraction has 112643 states and 123892 transitions. [2024-11-06 20:07:33,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states 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 20:07:33,657 INFO L276 IsEmpty]: Start isEmpty. Operand 112643 states and 123892 transitions. [2024-11-06 20:07:33,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2024-11-06 20:07:33,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:33,669 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:07:33,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-06 20:07:33,670 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:33,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:33,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1605899002, now seen corresponding path program 1 times [2024-11-06 20:07:33,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:33,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928142716] [2024-11-06 20:07:33,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:33,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:34,121 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 521 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-06 20:07:34,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:34,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928142716] [2024-11-06 20:07:34,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928142716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:34,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:34,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:34,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193080540] [2024-11-06 20:07:34,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:34,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:34,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:34,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:34,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:34,124 INFO L87 Difference]: Start difference. First operand 112643 states and 123892 transitions. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states 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 20:07:36,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:36,062 INFO L93 Difference]: Finished difference Result 242303 states and 266383 transitions. [2024-11-06 20:07:36,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:36,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 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 607 [2024-11-06 20:07:36,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:36,207 INFO L225 Difference]: With dead ends: 242303 [2024-11-06 20:07:36,207 INFO L226 Difference]: Without dead ends: 128797 [2024-11-06 20:07:36,280 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 20:07:36,280 INFO L432 NwaCegarLoop]: 596 mSDtfsCounter, 222 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:36,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 634 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-06 20:07:36,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128797 states. [2024-11-06 20:07:37,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128797 to 124961. [2024-11-06 20:07:38,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124961 states, 124960 states have (on average 1.0915813060179258) internal successors, (136404), 124960 states have internal predecessors, (136404), 0 states have call successors, (0), 0 states 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 20:07:38,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124961 states to 124961 states and 136404 transitions. [2024-11-06 20:07:38,196 INFO L78 Accepts]: Start accepts. Automaton has 124961 states and 136404 transitions. Word has length 607 [2024-11-06 20:07:38,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:38,196 INFO L471 AbstractCegarLoop]: Abstraction has 124961 states and 136404 transitions. [2024-11-06 20:07:38,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states 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 20:07:38,196 INFO L276 IsEmpty]: Start isEmpty. Operand 124961 states and 136404 transitions. [2024-11-06 20:07:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2024-11-06 20:07:38,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:38,208 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:07:38,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-06 20:07:38,209 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:38,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:38,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1503528320, now seen corresponding path program 1 times [2024-11-06 20:07:38,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:38,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700078898] [2024-11-06 20:07:38,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:38,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:38,733 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-06 20:07:38,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:38,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700078898] [2024-11-06 20:07:38,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700078898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:38,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:38,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:38,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23680565] [2024-11-06 20:07:38,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:38,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:38,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:38,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:38,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:38,737 INFO L87 Difference]: Start difference. First operand 124961 states and 136404 transitions. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 20:07:40,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:40,621 INFO L93 Difference]: Finished difference Result 263112 states and 286746 transitions. [2024-11-06 20:07:40,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:40,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 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 631 [2024-11-06 20:07:40,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:40,766 INFO L225 Difference]: With dead ends: 263112 [2024-11-06 20:07:40,766 INFO L226 Difference]: Without dead ends: 132628 [2024-11-06 20:07:40,837 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 20:07:40,838 INFO L432 NwaCegarLoop]: 589 mSDtfsCounter, 487 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:40,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 625 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-06 20:07:40,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132628 states. [2024-11-06 20:07:42,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132628 to 121560. [2024-11-06 20:07:42,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121560 states, 121559 states have (on average 1.0878421178193305) internal successors, (132237), 121559 states have internal predecessors, (132237), 0 states have call successors, (0), 0 states 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 20:07:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121560 states to 121560 states and 132237 transitions. [2024-11-06 20:07:42,458 INFO L78 Accepts]: Start accepts. Automaton has 121560 states and 132237 transitions. Word has length 631 [2024-11-06 20:07:42,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:42,458 INFO L471 AbstractCegarLoop]: Abstraction has 121560 states and 132237 transitions. [2024-11-06 20:07:42,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 20:07:42,458 INFO L276 IsEmpty]: Start isEmpty. Operand 121560 states and 132237 transitions. [2024-11-06 20:07:42,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2024-11-06 20:07:42,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:42,507 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, 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, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:07:42,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-06 20:07:42,508 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:42,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:42,508 INFO L85 PathProgramCache]: Analyzing trace with hash -476294953, now seen corresponding path program 1 times [2024-11-06 20:07:42,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:42,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503507481] [2024-11-06 20:07:42,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:42,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat