./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label51.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/Problem12_label51.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', 'c7d97141912edf4d560524a4fad707a432ae86320ba1bcf5df7fccfaf2185109'] 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/Problem12_label51.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 c7d97141912edf4d560524a4fad707a432ae86320ba1bcf5df7fccfaf2185109 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 19:44:55,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 19:44:55,587 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 19:44:55,595 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 19:44:55,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 19:44:55,623 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 19:44:55,624 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 19:44:55,624 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 19:44:55,625 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 19:44:55,625 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 19:44:55,626 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 19:44:55,626 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 19:44:55,627 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 19:44:55,627 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 19:44:55,627 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 19:44:55,627 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 19:44:55,627 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 19:44:55,627 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 19:44:55,627 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 19:44:55,627 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 19:44:55,628 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 19:44:55,628 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 19:44:55,628 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 19:44:55,628 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 19:44:55,628 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 19:44:55,628 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 19:44:55,629 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 19:44:55,629 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 19:44:55,629 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 19:44:55,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 19:44:55,629 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 19:44:55,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 19:44:55,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 19:44:55,629 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 19:44:55,629 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 19:44:55,629 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 19:44:55,629 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 19:44:55,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 19:44:55,629 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 19:44:55,629 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 19:44:55,629 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 19:44:55,629 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 19:44:55,629 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 -> c7d97141912edf4d560524a4fad707a432ae86320ba1bcf5df7fccfaf2185109 [2024-11-06 19:44:55,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 19:44:55,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 19:44:55,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 19:44:55,942 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 19:44:55,942 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 19:44:55,944 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label51.c [2024-11-06 19:44:57,180 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 19:44:57,602 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 19:44:57,605 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label51.c [2024-11-06 19:44:57,641 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ea0300243/5267e7cfe14d4a2f862d559487c85a5a/FLAG486cc66f3 [2024-11-06 19:44:57,658 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ea0300243/5267e7cfe14d4a2f862d559487c85a5a [2024-11-06 19:44:57,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 19:44:57,662 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 19:44:57,664 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 19:44:57,665 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 19:44:57,669 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 19:44:57,670 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:44:57" (1/1) ... [2024-11-06 19:44:57,670 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b36bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:57, skipping insertion in model container [2024-11-06 19:44:57,670 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:44:57" (1/1) ... [2024-11-06 19:44:57,774 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 19:44:57,954 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label51.c[1794,1807] [2024-11-06 19:44:58,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 19:44:58,508 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 19:44:58,521 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/Problem12_label51.c[1794,1807] [2024-11-06 19:44:58,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 19:44:58,912 INFO L204 MainTranslator]: Completed translation [2024-11-06 19:44:58,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:58 WrapperNode [2024-11-06 19:44:58,913 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 19:44:58,914 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 19:44:58,915 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 19:44:58,916 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 19:44:58,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:58" (1/1) ... [2024-11-06 19:44:58,987 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:58" (1/1) ... [2024-11-06 19:44:59,287 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-11-06 19:44:59,288 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 19:44:59,289 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 19:44:59,289 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 19:44:59,289 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 19:44:59,298 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:58" (1/1) ... [2024-11-06 19:44:59,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:58" (1/1) ... [2024-11-06 19:44:59,350 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:58" (1/1) ... [2024-11-06 19:44:59,558 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 19:44:59,562 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:58" (1/1) ... [2024-11-06 19:44:59,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:58" (1/1) ... [2024-11-06 19:44:59,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:58" (1/1) ... [2024-11-06 19:44:59,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:58" (1/1) ... [2024-11-06 19:44:59,895 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:58" (1/1) ... [2024-11-06 19:44:59,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:58" (1/1) ... [2024-11-06 19:44:59,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 19:44:59,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 19:44:59,993 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 19:44:59,993 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 19:44:59,994 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:58" (1/1) ... [2024-11-06 19:45:00,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 19:45:00,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:45:00,027 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 19:45:00,031 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 19:45:00,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 19:45:00,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 19:45:00,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 19:45:00,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 19:45:00,125 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 19:45:00,126 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 19:45:04,362 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-06 19:45:04,363 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 19:45:04,407 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 19:45:04,407 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 19:45:04,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:45:04 BoogieIcfgContainer [2024-11-06 19:45:04,408 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 19:45:04,410 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 19:45:04,410 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 19:45:04,418 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 19:45:04,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:44:57" (1/3) ... [2024-11-06 19:45:04,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71350fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:45:04, skipping insertion in model container [2024-11-06 19:45:04,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:58" (2/3) ... [2024-11-06 19:45:04,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71350fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:45:04, skipping insertion in model container [2024-11-06 19:45:04,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:45:04" (3/3) ... [2024-11-06 19:45:04,420 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label51.c [2024-11-06 19:45:04,432 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 19:45:04,433 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 19:45:04,517 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 19:45:04,529 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;@4c012d51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 19:45:04,530 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 19:45:04,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:04,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-06 19:45:04,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:04,547 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:45:04,548 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:04,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:04,553 INFO L85 PathProgramCache]: Analyzing trace with hash -988188511, now seen corresponding path program 1 times [2024-11-06 19:45:04,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:04,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088405520] [2024-11-06 19:45:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:04,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:04,848 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 19:45:04,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:04,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088405520] [2024-11-06 19:45:04,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088405520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:04,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:04,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:04,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585997512] [2024-11-06 19:45:04,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:04,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 19:45:04,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:04,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 19:45:04,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:45:04,877 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 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 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:10,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:10,387 INFO L93 Difference]: Finished difference Result 3155 states and 6150 transitions. [2024-11-06 19:45:10,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 19:45:10,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-06 19:45:10,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:10,411 INFO L225 Difference]: With dead ends: 3155 [2024-11-06 19:45:10,412 INFO L226 Difference]: Without dead ends: 2265 [2024-11-06 19:45:10,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-06 19:45:10,425 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 2474 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 1719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 5453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1719 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:10,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2474 Valid, 234 Invalid, 5453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1719 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-06 19:45:10,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2024-11-06 19:45:10,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2257. [2024-11-06 19:45:10,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.5350177304964538) internal successors, (3463), 2256 states have internal predecessors, (3463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:10,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3463 transitions. [2024-11-06 19:45:10,550 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3463 transitions. Word has length 11 [2024-11-06 19:45:10,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:10,550 INFO L471 AbstractCegarLoop]: Abstraction has 2257 states and 3463 transitions. [2024-11-06 19:45:10,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:10,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3463 transitions. [2024-11-06 19:45:10,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-06 19:45:10,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:10,556 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:45:10,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 19:45:10,557 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:10,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:10,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1639014020, now seen corresponding path program 1 times [2024-11-06 19:45:10,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:10,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323027206] [2024-11-06 19:45:10,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:10,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:11,193 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:45:11,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:11,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323027206] [2024-11-06 19:45:11,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323027206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:11,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:11,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:11,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487198604] [2024-11-06 19:45:11,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:11,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 19:45:11,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:11,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 19:45:11,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:45:11,196 INFO L87 Difference]: Start difference. First operand 2257 states and 3463 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:14,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:14,911 INFO L93 Difference]: Finished difference Result 6051 states and 9664 transitions. [2024-11-06 19:45:14,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 19:45:14,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2024-11-06 19:45:14,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:14,926 INFO L225 Difference]: With dead ends: 6051 [2024-11-06 19:45:14,926 INFO L226 Difference]: Without dead ends: 3759 [2024-11-06 19:45:14,929 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 19:45:14,930 INFO L432 NwaCegarLoop]: 694 mSDtfsCounter, 702 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 3836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:14,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 708 Invalid, 3836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-06 19:45:14,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2024-11-06 19:45:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3759. [2024-11-06 19:45:14,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 1.3408728046833422) internal successors, (5039), 3758 states have internal predecessors, (5039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:15,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5039 transitions. [2024-11-06 19:45:15,000 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5039 transitions. Word has length 151 [2024-11-06 19:45:15,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:15,000 INFO L471 AbstractCegarLoop]: Abstraction has 3759 states and 5039 transitions. [2024-11-06 19:45:15,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:15,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5039 transitions. [2024-11-06 19:45:15,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-06 19:45:15,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:15,005 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:45:15,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 19:45:15,006 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:15,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:15,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1288793869, now seen corresponding path program 1 times [2024-11-06 19:45:15,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:15,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187865758] [2024-11-06 19:45:15,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:15,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:15,328 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-06 19:45:15,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:15,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187865758] [2024-11-06 19:45:15,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187865758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:15,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:15,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:45:15,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796441985] [2024-11-06 19:45:15,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:15,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:15,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:15,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:15,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:15,332 INFO L87 Difference]: Start difference. First operand 3759 states and 5039 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:17,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:17,746 INFO L93 Difference]: Finished difference Result 10520 states and 14356 transitions. [2024-11-06 19:45:17,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:17,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 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 221 [2024-11-06 19:45:17,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:17,795 INFO L225 Difference]: With dead ends: 10520 [2024-11-06 19:45:17,795 INFO L226 Difference]: Without dead ends: 6763 [2024-11-06 19:45:17,804 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 19:45:17,815 INFO L432 NwaCegarLoop]: 480 mSDtfsCounter, 669 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 845 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 845 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:17,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 486 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [845 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-06 19:45:17,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2024-11-06 19:45:17,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6012. [2024-11-06 19:45:17,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 6011 states have (on average 1.2814839460988188) internal successors, (7703), 6011 states have internal predecessors, (7703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 7703 transitions. [2024-11-06 19:45:17,978 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 7703 transitions. Word has length 221 [2024-11-06 19:45:17,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:17,980 INFO L471 AbstractCegarLoop]: Abstraction has 6012 states and 7703 transitions. [2024-11-06 19:45:17,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:17,984 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 7703 transitions. [2024-11-06 19:45:17,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-06 19:45:17,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:17,989 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:45:17,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 19:45:17,989 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:17,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:17,991 INFO L85 PathProgramCache]: Analyzing trace with hash 204077554, now seen corresponding path program 1 times [2024-11-06 19:45:17,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:17,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569369857] [2024-11-06 19:45:17,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:17,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:18,396 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 17 proven. 54 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-06 19:45:18,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:18,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569369857] [2024-11-06 19:45:18,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569369857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 19:45:18,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460389840] [2024-11-06 19:45:18,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:18,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:45:18,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:45:18,401 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 19:45:18,434 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 19:45:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:18,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 19:45:18,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 19:45:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:45:18,707 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 19:45:18,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460389840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:18,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 19:45:18,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 19:45:18,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143138957] [2024-11-06 19:45:18,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:18,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:18,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:18,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:18,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 19:45:18,709 INFO L87 Difference]: Start difference. First operand 6012 states and 7703 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:21,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:21,220 INFO L93 Difference]: Finished difference Result 15026 states and 19934 transitions. [2024-11-06 19:45:21,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:21,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 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 234 [2024-11-06 19:45:21,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:21,244 INFO L225 Difference]: With dead ends: 15026 [2024-11-06 19:45:21,244 INFO L226 Difference]: Without dead ends: 9016 [2024-11-06 19:45:21,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 233 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 19:45:21,254 INFO L432 NwaCegarLoop]: 303 mSDtfsCounter, 908 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2072 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:21,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 309 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 2072 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-06 19:45:21,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9016 states. [2024-11-06 19:45:21,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9016 to 9016. [2024-11-06 19:45:21,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9016 states, 9015 states have (on average 1.2657792567942319) internal successors, (11411), 9015 states have internal predecessors, (11411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:21,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9016 states to 9016 states and 11411 transitions. [2024-11-06 19:45:21,406 INFO L78 Accepts]: Start accepts. Automaton has 9016 states and 11411 transitions. Word has length 234 [2024-11-06 19:45:21,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:21,406 INFO L471 AbstractCegarLoop]: Abstraction has 9016 states and 11411 transitions. [2024-11-06 19:45:21,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:21,407 INFO L276 IsEmpty]: Start isEmpty. Operand 9016 states and 11411 transitions. [2024-11-06 19:45:21,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-06 19:45:21,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:21,409 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:45:21,427 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 19:45:21,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:45:21,614 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:21,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:21,614 INFO L85 PathProgramCache]: Analyzing trace with hash 740515512, now seen corresponding path program 1 times [2024-11-06 19:45:21,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:21,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976660964] [2024-11-06 19:45:21,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:21,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:21,841 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-06 19:45:21,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:21,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976660964] [2024-11-06 19:45:21,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976660964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:21,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:21,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:21,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151233219] [2024-11-06 19:45:21,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:21,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:21,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:21,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:21,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:21,843 INFO L87 Difference]: Start difference. First operand 9016 states and 11411 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:24,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:24,269 INFO L93 Difference]: Finished difference Result 21785 states and 27827 transitions. [2024-11-06 19:45:24,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:24,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 251 [2024-11-06 19:45:24,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:24,331 INFO L225 Difference]: With dead ends: 21785 [2024-11-06 19:45:24,331 INFO L226 Difference]: Without dead ends: 12771 [2024-11-06 19:45:24,336 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 19:45:24,337 INFO L432 NwaCegarLoop]: 1208 mSDtfsCounter, 764 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:24,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 1216 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-06 19:45:24,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12771 states. [2024-11-06 19:45:24,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12771 to 12771. [2024-11-06 19:45:24,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12771 states, 12770 states have (on average 1.183868441660141) internal successors, (15118), 12770 states have internal predecessors, (15118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:24,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12771 states to 12771 states and 15118 transitions. [2024-11-06 19:45:24,499 INFO L78 Accepts]: Start accepts. Automaton has 12771 states and 15118 transitions. Word has length 251 [2024-11-06 19:45:24,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:24,500 INFO L471 AbstractCegarLoop]: Abstraction has 12771 states and 15118 transitions. [2024-11-06 19:45:24,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:24,500 INFO L276 IsEmpty]: Start isEmpty. Operand 12771 states and 15118 transitions. [2024-11-06 19:45:24,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-11-06 19:45:24,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:24,506 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 19:45:24,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 19:45:24,506 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:24,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:24,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1278477418, now seen corresponding path program 1 times [2024-11-06 19:45:24,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:24,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073845120] [2024-11-06 19:45:24,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:24,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 19:45:24,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:24,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073845120] [2024-11-06 19:45:24,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073845120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:24,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:24,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:24,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510149353] [2024-11-06 19:45:24,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:24,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:24,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:24,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:24,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:24,776 INFO L87 Difference]: Start difference. First operand 12771 states and 15118 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:27,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:27,488 INFO L93 Difference]: Finished difference Result 36054 states and 43062 transitions. [2024-11-06 19:45:27,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:27,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 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 338 [2024-11-06 19:45:27,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:27,533 INFO L225 Difference]: With dead ends: 36054 [2024-11-06 19:45:27,534 INFO L226 Difference]: Without dead ends: 23285 [2024-11-06 19:45:27,544 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 19:45:27,545 INFO L432 NwaCegarLoop]: 1215 mSDtfsCounter, 639 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 3004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:27,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 1223 Invalid, 3004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 2607 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-06 19:45:27,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23285 states. [2024-11-06 19:45:27,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23285 to 22534. [2024-11-06 19:45:27,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22534 states, 22533 states have (on average 1.1720143789109307) internal successors, (26409), 22533 states have internal predecessors, (26409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:27,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22534 states to 22534 states and 26409 transitions. [2024-11-06 19:45:27,788 INFO L78 Accepts]: Start accepts. Automaton has 22534 states and 26409 transitions. Word has length 338 [2024-11-06 19:45:27,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:27,788 INFO L471 AbstractCegarLoop]: Abstraction has 22534 states and 26409 transitions. [2024-11-06 19:45:27,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:27,789 INFO L276 IsEmpty]: Start isEmpty. Operand 22534 states and 26409 transitions. [2024-11-06 19:45:27,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-06 19:45:27,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:27,794 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 19:45:27,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-06 19:45:27,795 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:27,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:27,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1344940876, now seen corresponding path program 1 times [2024-11-06 19:45:27,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:27,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325881009] [2024-11-06 19:45:27,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:27,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:28,396 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-06 19:45:28,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:28,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325881009] [2024-11-06 19:45:28,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325881009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:28,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:28,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:28,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488437590] [2024-11-06 19:45:28,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:28,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:28,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:28,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:28,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:28,398 INFO L87 Difference]: Start difference. First operand 22534 states and 26409 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:30,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:30,894 INFO L93 Difference]: Finished difference Result 51074 states and 59608 transitions. [2024-11-06 19:45:30,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:30,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 342 [2024-11-06 19:45:30,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:30,936 INFO L225 Difference]: With dead ends: 51074 [2024-11-06 19:45:30,936 INFO L226 Difference]: Without dead ends: 28542 [2024-11-06 19:45:30,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 19:45:30,958 INFO L432 NwaCegarLoop]: 961 mSDtfsCounter, 829 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:30,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 969 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 2146 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-06 19:45:30,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28542 states. [2024-11-06 19:45:31,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28542 to 27040. [2024-11-06 19:45:31,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27040 states, 27039 states have (on average 1.144716890417545) internal successors, (30952), 27039 states have internal predecessors, (30952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:31,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27040 states to 27040 states and 30952 transitions. [2024-11-06 19:45:31,325 INFO L78 Accepts]: Start accepts. Automaton has 27040 states and 30952 transitions. Word has length 342 [2024-11-06 19:45:31,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:31,326 INFO L471 AbstractCegarLoop]: Abstraction has 27040 states and 30952 transitions. [2024-11-06 19:45:31,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:31,326 INFO L276 IsEmpty]: Start isEmpty. Operand 27040 states and 30952 transitions. [2024-11-06 19:45:31,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2024-11-06 19:45:31,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:31,349 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 19:45:31,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 19:45:31,350 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:31,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:31,350 INFO L85 PathProgramCache]: Analyzing trace with hash -357694838, now seen corresponding path program 1 times [2024-11-06 19:45:31,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:31,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511793305] [2024-11-06 19:45:31,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:31,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:31,749 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-06 19:45:31,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:31,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511793305] [2024-11-06 19:45:31,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511793305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:31,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:31,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:31,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599803236] [2024-11-06 19:45:31,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:31,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:31,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:31,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:31,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:31,754 INFO L87 Difference]: Start difference. First operand 27040 states and 30952 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:34,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:34,316 INFO L93 Difference]: Finished difference Result 54829 states and 62659 transitions. [2024-11-06 19:45:34,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:34,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 444 [2024-11-06 19:45:34,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:34,355 INFO L225 Difference]: With dead ends: 54829 [2024-11-06 19:45:34,355 INFO L226 Difference]: Without dead ends: 27791 [2024-11-06 19:45:34,371 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 19:45:34,372 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 663 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2285 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:34,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 269 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2285 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-06 19:45:34,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27791 states. [2024-11-06 19:45:34,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27791 to 27040. [2024-11-06 19:45:34,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27040 states, 27039 states have (on average 1.1338437072376937) internal successors, (30658), 27039 states have internal predecessors, (30658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:34,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27040 states to 27040 states and 30658 transitions. [2024-11-06 19:45:34,770 INFO L78 Accepts]: Start accepts. Automaton has 27040 states and 30658 transitions. Word has length 444 [2024-11-06 19:45:34,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:34,771 INFO L471 AbstractCegarLoop]: Abstraction has 27040 states and 30658 transitions. [2024-11-06 19:45:34,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:34,771 INFO L276 IsEmpty]: Start isEmpty. Operand 27040 states and 30658 transitions. [2024-11-06 19:45:34,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2024-11-06 19:45:34,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:34,784 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:45:34,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-06 19:45:34,784 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:34,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:34,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1671865206, now seen corresponding path program 1 times [2024-11-06 19:45:34,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:34,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108828834] [2024-11-06 19:45:34,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:34,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 261 proven. 230 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-06 19:45:35,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:35,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108828834] [2024-11-06 19:45:35,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108828834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 19:45:35,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827684783] [2024-11-06 19:45:35,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:35,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:45:35,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:45:35,727 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 19:45:35,729 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 19:45:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:35,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 19:45:35,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 19:45:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-06 19:45:36,163 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 19:45:36,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827684783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:36,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 19:45:36,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-06 19:45:36,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709607692] [2024-11-06 19:45:36,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:36,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:36,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:36,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:36,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 19:45:36,167 INFO L87 Difference]: Start difference. First operand 27040 states and 30658 transitions. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:38,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:38,864 INFO L93 Difference]: Finished difference Result 72102 states and 82464 transitions. [2024-11-06 19:45:38,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:38,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 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 455 [2024-11-06 19:45:38,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:38,930 INFO L225 Difference]: With dead ends: 72102 [2024-11-06 19:45:38,930 INFO L226 Difference]: Without dead ends: 45064 [2024-11-06 19:45:38,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 19:45:38,956 INFO L432 NwaCegarLoop]: 1046 mSDtfsCounter, 665 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 3054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:38,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1053 Invalid, 3054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2347 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-06 19:45:38,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45064 states. [2024-11-06 19:45:39,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45064 to 45064. [2024-11-06 19:45:39,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45064 states, 45063 states have (on average 1.141291081374964) internal successors, (51430), 45063 states have internal predecessors, (51430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:39,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45064 states to 45064 states and 51430 transitions. [2024-11-06 19:45:39,644 INFO L78 Accepts]: Start accepts. Automaton has 45064 states and 51430 transitions. Word has length 455 [2024-11-06 19:45:39,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:39,644 INFO L471 AbstractCegarLoop]: Abstraction has 45064 states and 51430 transitions. [2024-11-06 19:45:39,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:39,645 INFO L276 IsEmpty]: Start isEmpty. Operand 45064 states and 51430 transitions. [2024-11-06 19:45:39,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2024-11-06 19:45:39,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:39,654 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 19:45:39,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-06 19:45:39,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:45:39,859 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:39,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:39,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1008289624, now seen corresponding path program 1 times [2024-11-06 19:45:39,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:39,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123704790] [2024-11-06 19:45:39,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:39,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:40,110 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 459 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-06 19:45:40,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:40,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123704790] [2024-11-06 19:45:40,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123704790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:40,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:40,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:40,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947893068] [2024-11-06 19:45:40,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:40,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:40,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:40,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:40,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:40,112 INFO L87 Difference]: Start difference. First operand 45064 states and 51430 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:42,884 INFO L93 Difference]: Finished difference Result 107399 states and 121876 transitions. [2024-11-06 19:45:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:42,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 464 [2024-11-06 19:45:42,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:42,954 INFO L225 Difference]: With dead ends: 107399 [2024-11-06 19:45:42,954 INFO L226 Difference]: Without dead ends: 61586 [2024-11-06 19:45:42,985 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 19:45:42,986 INFO L432 NwaCegarLoop]: 1067 mSDtfsCounter, 732 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:42,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 1074 Invalid, 2767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-06 19:45:43,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61586 states. [2024-11-06 19:45:43,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61586 to 55578. [2024-11-06 19:45:43,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55578 states, 55577 states have (on average 1.1048275365708837) internal successors, (61403), 55577 states have internal predecessors, (61403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55578 states to 55578 states and 61403 transitions. [2024-11-06 19:45:43,573 INFO L78 Accepts]: Start accepts. Automaton has 55578 states and 61403 transitions. Word has length 464 [2024-11-06 19:45:43,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:43,574 INFO L471 AbstractCegarLoop]: Abstraction has 55578 states and 61403 transitions. [2024-11-06 19:45:43,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:43,574 INFO L276 IsEmpty]: Start isEmpty. Operand 55578 states and 61403 transitions. [2024-11-06 19:45:43,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-11-06 19:45:43,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:43,586 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:45:43,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-06 19:45:43,587 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:43,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:43,588 INFO L85 PathProgramCache]: Analyzing trace with hash 689872906, now seen corresponding path program 1 times [2024-11-06 19:45:43,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:43,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423306052] [2024-11-06 19:45:43,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:43,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:43,966 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 437 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-06 19:45:43,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:43,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423306052] [2024-11-06 19:45:43,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423306052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:43,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:43,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:43,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201028993] [2024-11-06 19:45:43,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:43,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:43,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:43,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:43,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:43,968 INFO L87 Difference]: Start difference. First operand 55578 states and 61403 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:46,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:46,882 INFO L93 Difference]: Finished difference Result 144198 states and 159788 transitions. [2024-11-06 19:45:46,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:46,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 515 [2024-11-06 19:45:46,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:47,022 INFO L225 Difference]: With dead ends: 144198 [2024-11-06 19:45:47,022 INFO L226 Difference]: Without dead ends: 89373 [2024-11-06 19:45:47,062 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 19:45:47,062 INFO L432 NwaCegarLoop]: 454 mSDtfsCounter, 618 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:47,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 460 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-06 19:45:47,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89373 states. [2024-11-06 19:45:47,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89373 to 87871. [2024-11-06 19:45:48,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87871 states, 87870 states have (on average 1.0897575964493) internal successors, (95757), 87870 states have internal predecessors, (95757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:48,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87871 states to 87871 states and 95757 transitions. [2024-11-06 19:45:48,256 INFO L78 Accepts]: Start accepts. Automaton has 87871 states and 95757 transitions. Word has length 515 [2024-11-06 19:45:48,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:48,257 INFO L471 AbstractCegarLoop]: Abstraction has 87871 states and 95757 transitions. [2024-11-06 19:45:48,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:48,257 INFO L276 IsEmpty]: Start isEmpty. Operand 87871 states and 95757 transitions. [2024-11-06 19:45:48,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2024-11-06 19:45:48,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:48,266 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 19:45:48,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-06 19:45:48,266 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:48,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:48,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1940279612, now seen corresponding path program 1 times [2024-11-06 19:45:48,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:48,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188788746] [2024-11-06 19:45:48,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:48,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:48,659 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-06 19:45:48,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:48,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188788746] [2024-11-06 19:45:48,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188788746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:48,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:48,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:48,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424783032] [2024-11-06 19:45:48,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:48,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:48,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:48,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:48,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:48,661 INFO L87 Difference]: Start difference. First operand 87871 states and 95757 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:51,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:51,317 INFO L93 Difference]: Finished difference Result 195266 states and 213075 transitions. [2024-11-06 19:45:51,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:51,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 527 [2024-11-06 19:45:51,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:51,434 INFO L225 Difference]: With dead ends: 195266 [2024-11-06 19:45:51,434 INFO L226 Difference]: Without dead ends: 108148 [2024-11-06 19:45:51,487 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 19:45:51,488 INFO L432 NwaCegarLoop]: 1282 mSDtfsCounter, 581 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:51,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 1290 Invalid, 2753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 2331 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-06 19:45:51,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108148 states. [2024-11-06 19:45:52,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108148 to 105144. [2024-11-06 19:45:52,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105144 states, 105143 states have (on average 1.0826683659397203) internal successors, (113835), 105143 states have internal predecessors, (113835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:52,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105144 states to 105144 states and 113835 transitions. [2024-11-06 19:45:52,843 INFO L78 Accepts]: Start accepts. Automaton has 105144 states and 113835 transitions. Word has length 527 [2024-11-06 19:45:52,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:52,844 INFO L471 AbstractCegarLoop]: Abstraction has 105144 states and 113835 transitions. [2024-11-06 19:45:52,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:52,844 INFO L276 IsEmpty]: Start isEmpty. Operand 105144 states and 113835 transitions. [2024-11-06 19:45:52,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2024-11-06 19:45:52,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:52,858 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 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 19:45:52,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-06 19:45:52,858 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:52,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:52,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2553455, now seen corresponding path program 1 times [2024-11-06 19:45:52,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:52,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547110575] [2024-11-06 19:45:52,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:52,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 907 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2024-11-06 19:45:53,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:53,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547110575] [2024-11-06 19:45:53,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547110575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:53,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:53,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:53,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804661716] [2024-11-06 19:45:53,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:53,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:53,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:53,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:53,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:53,355 INFO L87 Difference]: Start difference. First operand 105144 states and 113835 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:55,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:55,847 INFO L93 Difference]: Finished difference Result 210286 states and 227772 transitions. [2024-11-06 19:45:55,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:55,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 573 [2024-11-06 19:45:55,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:55,958 INFO L225 Difference]: With dead ends: 210286 [2024-11-06 19:45:55,959 INFO L226 Difference]: Without dead ends: 105895 [2024-11-06 19:45:56,019 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 19:45:56,020 INFO L432 NwaCegarLoop]: 1108 mSDtfsCounter, 806 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:56,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1116 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 2195 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-06 19:45:56,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105895 states. [2024-11-06 19:45:57,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105895 to 105895. [2024-11-06 19:45:57,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105895 states, 105894 states have (on average 1.070391145862844) internal successors, (113348), 105894 states have internal predecessors, (113348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:57,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105895 states to 105895 states and 113348 transitions. [2024-11-06 19:45:57,414 INFO L78 Accepts]: Start accepts. Automaton has 105895 states and 113348 transitions. Word has length 573 [2024-11-06 19:45:57,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:57,415 INFO L471 AbstractCegarLoop]: Abstraction has 105895 states and 113348 transitions. [2024-11-06 19:45:57,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:57,415 INFO L276 IsEmpty]: Start isEmpty. Operand 105895 states and 113348 transitions. [2024-11-06 19:45:57,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2024-11-06 19:45:57,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:57,431 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 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] [2024-11-06 19:45:57,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-06 19:45:57,431 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:57,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:57,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1602236886, now seen corresponding path program 1 times [2024-11-06 19:45:57,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:57,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239270225] [2024-11-06 19:45:57,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:57,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 667 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-06 19:45:58,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:58,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239270225] [2024-11-06 19:45:58,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239270225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:58,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:58,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:58,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42398531] [2024-11-06 19:45:58,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:58,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:58,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:58,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:58,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:58,349 INFO L87 Difference]: Start difference. First operand 105895 states and 113348 transitions. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:46:00,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:46:00,927 INFO L93 Difference]: Finished difference Result 214792 states and 229744 transitions. [2024-11-06 19:46:00,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:46:00,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 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 600 [2024-11-06 19:46:00,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:46:01,054 INFO L225 Difference]: With dead ends: 214792 [2024-11-06 19:46:01,054 INFO L226 Difference]: Without dead ends: 109650 [2024-11-06 19:46:01,119 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 19:46:01,120 INFO L432 NwaCegarLoop]: 1265 mSDtfsCounter, 591 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 2653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-06 19:46:01,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1273 Invalid, 2653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-06 19:46:01,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109650 states. [2024-11-06 19:46:02,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109650 to 106646. [2024-11-06 19:46:02,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106646 states, 106645 states have (on average 1.060518542829012) internal successors, (113099), 106645 states have internal predecessors, (113099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:46:02,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106646 states to 106646 states and 113099 transitions. [2024-11-06 19:46:02,571 INFO L78 Accepts]: Start accepts. Automaton has 106646 states and 113099 transitions. Word has length 600 [2024-11-06 19:46:02,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:46:02,571 INFO L471 AbstractCegarLoop]: Abstraction has 106646 states and 113099 transitions. [2024-11-06 19:46:02,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:46:02,571 INFO L276 IsEmpty]: Start isEmpty. Operand 106646 states and 113099 transitions. [2024-11-06 19:46:02,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2024-11-06 19:46:02,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:46:02,589 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 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] [2024-11-06 19:46:02,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-06 19:46:02,590 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:46:02,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:46:02,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1697512307, now seen corresponding path program 1 times [2024-11-06 19:46:02,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:46:02,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728008010] [2024-11-06 19:46:02,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:46:02,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:46:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:46:03,154 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 711 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-06 19:46:03,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:46:03,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728008010] [2024-11-06 19:46:03,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728008010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:46:03,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:46:03,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:46:03,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208482592] [2024-11-06 19:46:03,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:46:03,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:46:03,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:46:03,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:46:03,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:46:03,156 INFO L87 Difference]: Start difference. First operand 106646 states and 113099 transitions. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:46:05,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:46:05,888 INFO L93 Difference]: Finished difference Result 227559 states and 242182 transitions. [2024-11-06 19:46:05,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:46:05,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 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 622 [2024-11-06 19:46:05,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:46:06,029 INFO L225 Difference]: With dead ends: 227559 [2024-11-06 19:46:06,029 INFO L226 Difference]: Without dead ends: 121666 [2024-11-06 19:46:06,081 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 19:46:06,082 INFO L432 NwaCegarLoop]: 1286 mSDtfsCounter, 602 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-06 19:46:06,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 1294 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-06 19:46:06,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121666 states. [2024-11-06 19:46:07,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121666 to 115658. [2024-11-06 19:46:07,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115658 states, 115657 states have (on average 1.0552063428932101) internal successors, (122042), 115657 states have internal predecessors, (122042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:46:07,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115658 states to 115658 states and 122042 transitions. [2024-11-06 19:46:07,492 INFO L78 Accepts]: Start accepts. Automaton has 115658 states and 122042 transitions. Word has length 622 [2024-11-06 19:46:07,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:46:07,493 INFO L471 AbstractCegarLoop]: Abstraction has 115658 states and 122042 transitions. [2024-11-06 19:46:07,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:46:07,493 INFO L276 IsEmpty]: Start isEmpty. Operand 115658 states and 122042 transitions. [2024-11-06 19:46:07,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2024-11-06 19:46:07,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:46:07,514 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 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] [2024-11-06 19:46:07,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-06 19:46:07,514 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:46:07,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:46:07,515 INFO L85 PathProgramCache]: Analyzing trace with hash 328629557, now seen corresponding path program 1 times [2024-11-06 19:46:07,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:46:07,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123127330] [2024-11-06 19:46:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:46:07,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:46:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:46:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 741 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-06 19:46:08,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:46:08,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123127330] [2024-11-06 19:46:08,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123127330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:46:08,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:46:08,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:46:08,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797678193] [2024-11-06 19:46:08,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:46:08,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:46:08,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:46:08,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:46:08,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:46:08,295 INFO L87 Difference]: Start difference. First operand 115658 states and 122042 transitions. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:46:10,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:46:10,955 INFO L93 Difference]: Finished difference Result 234318 states and 247183 transitions. [2024-11-06 19:46:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:46:10,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 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 637 [2024-11-06 19:46:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:46:11,076 INFO L225 Difference]: With dead ends: 234318 [2024-11-06 19:46:11,076 INFO L226 Difference]: Without dead ends: 119413 [2024-11-06 19:46:11,115 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 19:46:11,116 INFO L432 NwaCegarLoop]: 1335 mSDtfsCounter, 595 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 2463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-06 19:46:11,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 1343 Invalid, 2463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-06 19:46:11,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119413 states. [2024-11-06 19:46:11,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119413 to 117160. [2024-11-06 19:46:12,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117160 states, 117159 states have (on average 1.0535596923838544) internal successors, (123434), 117159 states have internal predecessors, (123434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:46:12,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117160 states to 117160 states and 123434 transitions. [2024-11-06 19:46:12,183 INFO L78 Accepts]: Start accepts. Automaton has 117160 states and 123434 transitions. Word has length 637 [2024-11-06 19:46:12,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:46:12,184 INFO L471 AbstractCegarLoop]: Abstraction has 117160 states and 123434 transitions. [2024-11-06 19:46:12,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:46:12,184 INFO L276 IsEmpty]: Start isEmpty. Operand 117160 states and 123434 transitions. [2024-11-06 19:46:12,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2024-11-06 19:46:12,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:46:12,195 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:46:12,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-06 19:46:12,196 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:46:12,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:46:12,196 INFO L85 PathProgramCache]: Analyzing trace with hash -984613049, now seen corresponding path program 1 times [2024-11-06 19:46:12,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:46:12,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215545414] [2024-11-06 19:46:12,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:46:12,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:46:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:46:13,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 953 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-06 19:46:13,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:46:13,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215545414] [2024-11-06 19:46:13,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215545414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:46:13,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:46:13,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 19:46:13,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373706900] [2024-11-06 19:46:13,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:46:13,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 19:46:13,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:46:13,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 19:46:13,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:46:13,011 INFO L87 Difference]: Start difference. First operand 117160 states and 123434 transitions. Second operand has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)