./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label34.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/eca-rers2012/Problem17_label34.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', 'c371ce1f15a8888766c33a9703b06847f70d6274570c9b062f0d05b5c6caa625'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label34.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 c371ce1f15a8888766c33a9703b06847f70d6274570c9b062f0d05b5c6caa625 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 20:07:02,508 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 20:07:02,564 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 20:07:02,567 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 20:07:02,568 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 20:07:02,593 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 20:07:02,594 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 20:07:02,594 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 20:07:02,597 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 20:07:02,597 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 20:07:02,597 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 20:07:02,597 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 20:07:02,598 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 20:07:02,598 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 20:07:02,598 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 20:07:02,598 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 20:07:02,598 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 20:07:02,598 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 20:07:02,598 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 20:07:02,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 20:07:02,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 20:07:02,598 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 20:07:02,598 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 20:07:02,598 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 20:07:02,598 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 20:07:02,598 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 20:07:02,598 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 20:07:02,598 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 20:07:02,598 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 20:07:02,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 20:07:02,599 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 20:07:02,599 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 20:07:02,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 20:07:02,599 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 20:07:02,599 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 20:07:02,599 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 20:07:02,599 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 20:07:02,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 20:07:02,599 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 20:07:02,599 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 20:07:02,599 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 20:07:02,599 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 20:07:02,599 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 -> c371ce1f15a8888766c33a9703b06847f70d6274570c9b062f0d05b5c6caa625 [2024-11-06 20:07:02,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 20:07:02,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 20:07:02,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 20:07:02,811 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 20:07:02,811 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 20:07:02,812 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label34.c [2024-11-06 20:07:03,924 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 20:07:04,204 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 20:07:04,206 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label34.c [2024-11-06 20:07:04,224 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cec084af8/a72d4a35f9f54e7da31ae18ff0f33261/FLAG7fe859cb9 [2024-11-06 20:07:04,484 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cec084af8/a72d4a35f9f54e7da31ae18ff0f33261 [2024-11-06 20:07:04,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 20:07:04,487 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 20:07:04,488 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 20:07:04,488 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 20:07:04,491 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 20:07:04,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:07:04" (1/1) ... [2024-11-06 20:07:04,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b00305a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:07:04, skipping insertion in model container [2024-11-06 20:07:04,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:07:04" (1/1) ... [2024-11-06 20:07:04,534 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 20:07:04,665 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label34.c[2983,2996] [2024-11-06 20:07:05,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 20:07:05,017 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 20:07:05,028 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label34.c[2983,2996] [2024-11-06 20:07:05,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 20:07:05,207 INFO L204 MainTranslator]: Completed translation [2024-11-06 20:07:05,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:07:05 WrapperNode [2024-11-06 20:07:05,208 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 20:07:05,209 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 20:07:05,209 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 20:07:05,210 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 20:07:05,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:07:05" (1/1) ... [2024-11-06 20:07:05,255 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:07:05" (1/1) ... [2024-11-06 20:07:05,488 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-06 20:07:05,489 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 20:07:05,489 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 20:07:05,489 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 20:07:05,489 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 20:07:05,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:07:05" (1/1) ... [2024-11-06 20:07:05,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:07:05" (1/1) ... [2024-11-06 20:07:05,567 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:07:05" (1/1) ... [2024-11-06 20:07:05,709 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-06 20:07:05,709 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:07:05" (1/1) ... [2024-11-06 20:07:05,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:07:05" (1/1) ... [2024-11-06 20:07:05,761 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:07:05" (1/1) ... [2024-11-06 20:07:05,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:07:05" (1/1) ... [2024-11-06 20:07:05,802 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:07:05" (1/1) ... [2024-11-06 20:07:05,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:07:05" (1/1) ... [2024-11-06 20:07:05,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 20:07:05,853 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 20:07:05,853 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 20:07:05,853 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 20:07:05,855 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:07:05" (1/1) ... [2024-11-06 20:07:05,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 20:07:05,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:07:05,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 20:07:05,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 20:07:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 20:07:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 20:07:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 20:07:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 20:07:05,946 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 20:07:05,948 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 20:07:08,420 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-06 20:07:08,421 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 20:07:08,443 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 20:07:08,448 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 20:07:08,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:07:08 BoogieIcfgContainer [2024-11-06 20:07:08,449 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 20:07:08,451 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 20:07:08,451 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 20:07:08,454 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 20:07:08,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:07:04" (1/3) ... [2024-11-06 20:07:08,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e3b95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:07:08, skipping insertion in model container [2024-11-06 20:07:08,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:07:05" (2/3) ... [2024-11-06 20:07:08,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e3b95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:07:08, skipping insertion in model container [2024-11-06 20:07:08,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:07:08" (3/3) ... [2024-11-06 20:07:08,456 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label34.c [2024-11-06 20:07:08,466 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 20:07:08,466 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 20:07:08,512 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 20:07:08,519 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;@5d81d15b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 20:07:08,519 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 20:07:08,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:08,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-06 20:07:08,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:08,528 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:07:08,529 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:08,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:08,532 INFO L85 PathProgramCache]: Analyzing trace with hash 406614337, now seen corresponding path program 1 times [2024-11-06 20:07:08,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:08,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068399220] [2024-11-06 20:07:08,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:08,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:08,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:07:08,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:08,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068399220] [2024-11-06 20:07:08,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068399220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:08,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:08,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:07:08,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901843407] [2024-11-06 20:07:08,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:08,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:08,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:08,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:08,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:08,737 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:10,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:10,678 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2024-11-06 20:07:10,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:10,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-11-06 20:07:10,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:10,691 INFO L225 Difference]: With dead ends: 1642 [2024-11-06 20:07:10,691 INFO L226 Difference]: Without dead ends: 975 [2024-11-06 20:07:10,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:10,698 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 471 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:10,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-06 20:07:10,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2024-11-06 20:07:10,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2024-11-06 20:07:10,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:10,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2024-11-06 20:07:10,765 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 19 [2024-11-06 20:07:10,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:10,766 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2024-11-06 20:07:10,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:10,766 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2024-11-06 20:07:10,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-06 20:07:10,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:10,768 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-06 20:07:10,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 20:07:10,768 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:10,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:10,768 INFO L85 PathProgramCache]: Analyzing trace with hash 952084788, now seen corresponding path program 1 times [2024-11-06 20:07:10,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:10,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606523962] [2024-11-06 20:07:10,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:10,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:11,128 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:07:11,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:11,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606523962] [2024-11-06 20:07:11,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606523962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:11,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:11,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:11,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155440320] [2024-11-06 20:07:11,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:11,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:07:11,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:11,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:07:11,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:07:11,131 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:13,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:13,901 INFO L93 Difference]: Finished difference Result 3735 states and 5654 transitions. [2024-11-06 20:07:13,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:07:13,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2024-11-06 20:07:13,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:13,910 INFO L225 Difference]: With dead ends: 3735 [2024-11-06 20:07:13,910 INFO L226 Difference]: Without dead ends: 2765 [2024-11-06 20:07:13,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:07:13,912 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 899 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2826 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 2826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:13,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 314 Invalid, 3416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 2826 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-06 20:07:13,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2024-11-06 20:07:13,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2724. [2024-11-06 20:07:13,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2723 states have (on average 1.3944179214102093) internal successors, (3797), 2723 states have internal predecessors, (3797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:13,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3797 transitions. [2024-11-06 20:07:13,956 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3797 transitions. Word has length 89 [2024-11-06 20:07:13,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:13,957 INFO L471 AbstractCegarLoop]: Abstraction has 2724 states and 3797 transitions. [2024-11-06 20:07:13,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:13,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3797 transitions. [2024-11-06 20:07:13,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-06 20:07:13,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:13,960 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:07:13,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 20:07:13,960 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:13,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:13,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1747470320, now seen corresponding path program 1 times [2024-11-06 20:07:13,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:13,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464478153] [2024-11-06 20:07:13,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:13,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:07:14,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:14,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464478153] [2024-11-06 20:07:14,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464478153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:14,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:14,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:07:14,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840197516] [2024-11-06 20:07:14,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:14,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:14,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:14,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:14,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:14,325 INFO L87 Difference]: Start difference. First operand 2724 states and 3797 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:16,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:16,413 INFO L93 Difference]: Finished difference Result 6325 states and 8834 transitions. [2024-11-06 20:07:16,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:16,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2024-11-06 20:07:16,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:16,424 INFO L225 Difference]: With dead ends: 6325 [2024-11-06 20:07:16,425 INFO L226 Difference]: Without dead ends: 3603 [2024-11-06 20:07:16,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:16,428 INFO L432 NwaCegarLoop]: 475 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:16,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 537 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-06 20:07:16,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3603 states. [2024-11-06 20:07:16,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3603 to 3583. [2024-11-06 20:07:16,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3582 states have (on average 1.3604131769960917) internal successors, (4873), 3582 states have internal predecessors, (4873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:16,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 4873 transitions. [2024-11-06 20:07:16,487 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 4873 transitions. Word has length 124 [2024-11-06 20:07:16,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:16,488 INFO L471 AbstractCegarLoop]: Abstraction has 3583 states and 4873 transitions. [2024-11-06 20:07:16,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:16,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 4873 transitions. [2024-11-06 20:07:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-06 20:07:16,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:16,490 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:07:16,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 20:07:16,490 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:16,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:16,490 INFO L85 PathProgramCache]: Analyzing trace with hash 2113039039, now seen corresponding path program 1 times [2024-11-06 20:07:16,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:16,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613225631] [2024-11-06 20:07:16,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:16,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:16,629 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:07:16,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:16,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613225631] [2024-11-06 20:07:16,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613225631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:16,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:16,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:07:16,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301438065] [2024-11-06 20:07:16,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:16,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:16,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:16,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:16,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:16,632 INFO L87 Difference]: Start difference. First operand 3583 states and 4873 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:18,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:18,112 INFO L93 Difference]: Finished difference Result 9293 states and 12695 transitions. [2024-11-06 20:07:18,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:18,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2024-11-06 20:07:18,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:18,123 INFO L225 Difference]: With dead ends: 9293 [2024-11-06 20:07:18,123 INFO L226 Difference]: Without dead ends: 4853 [2024-11-06 20:07:18,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:18,127 INFO L432 NwaCegarLoop]: 515 mSDtfsCounter, 348 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:18,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 590 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-06 20:07:18,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4853 states. [2024-11-06 20:07:18,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4853 to 4001. [2024-11-06 20:07:18,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 4000 states have (on average 1.22775) internal successors, (4911), 4000 states have internal predecessors, (4911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:18,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 4911 transitions. [2024-11-06 20:07:18,167 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 4911 transitions. Word has length 130 [2024-11-06 20:07:18,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:18,167 INFO L471 AbstractCegarLoop]: Abstraction has 4001 states and 4911 transitions. [2024-11-06 20:07:18,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:18,168 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 4911 transitions. [2024-11-06 20:07:18,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-06 20:07:18,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:18,169 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:07:18,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 20:07:18,169 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:18,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:18,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1935512509, now seen corresponding path program 1 times [2024-11-06 20:07:18,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:18,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137469594] [2024-11-06 20:07:18,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:18,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-06 20:07:18,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:18,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137469594] [2024-11-06 20:07:18,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137469594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:18,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:18,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:18,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423596031] [2024-11-06 20:07:18,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:18,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:18,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:18,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:18,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:18,267 INFO L87 Difference]: Start difference. First operand 4001 states and 4911 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:19,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:19,755 INFO L93 Difference]: Finished difference Result 10125 states and 12629 transitions. [2024-11-06 20:07:19,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:19,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 173 [2024-11-06 20:07:19,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:19,768 INFO L225 Difference]: With dead ends: 10125 [2024-11-06 20:07:19,768 INFO L226 Difference]: Without dead ends: 6126 [2024-11-06 20:07:19,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:19,772 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 441 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:19,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 477 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-06 20:07:19,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2024-11-06 20:07:19,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 3978. [2024-11-06 20:07:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3978 states, 3977 states have (on average 1.2260497862710587) internal successors, (4876), 3977 states have internal predecessors, (4876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:19,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 4876 transitions. [2024-11-06 20:07:19,821 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 4876 transitions. Word has length 173 [2024-11-06 20:07:19,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:19,822 INFO L471 AbstractCegarLoop]: Abstraction has 3978 states and 4876 transitions. [2024-11-06 20:07:19,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:19,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 4876 transitions. [2024-11-06 20:07:19,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-06 20:07:19,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:19,823 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:07:19,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 20:07:19,824 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:19,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:19,824 INFO L85 PathProgramCache]: Analyzing trace with hash -330707048, now seen corresponding path program 1 times [2024-11-06 20:07:19,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:19,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879209089] [2024-11-06 20:07:19,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:19,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:07:20,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:20,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879209089] [2024-11-06 20:07:20,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879209089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:20,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:20,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 20:07:20,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407022636] [2024-11-06 20:07:20,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:20,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 20:07:20,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:20,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 20:07:20,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-06 20:07:20,094 INFO L87 Difference]: Start difference. First operand 3978 states and 4876 transitions. Second operand has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:21,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:21,704 INFO L93 Difference]: Finished difference Result 10524 states and 13152 transitions. [2024-11-06 20:07:21,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:07:21,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2024-11-06 20:07:21,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:21,718 INFO L225 Difference]: With dead ends: 10524 [2024-11-06 20:07:21,718 INFO L226 Difference]: Without dead ends: 6548 [2024-11-06 20:07:21,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 20:07:21,721 INFO L432 NwaCegarLoop]: 739 mSDtfsCounter, 1151 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 2415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:21,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 827 Invalid, 2415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [700 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-06 20:07:21,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2024-11-06 20:07:21,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 6535. [2024-11-06 20:07:21,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6535 states, 6534 states have (on average 1.2058463422099786) internal successors, (7879), 6534 states have internal predecessors, (7879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:21,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6535 states to 6535 states and 7879 transitions. [2024-11-06 20:07:21,782 INFO L78 Accepts]: Start accepts. Automaton has 6535 states and 7879 transitions. Word has length 180 [2024-11-06 20:07:21,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:21,782 INFO L471 AbstractCegarLoop]: Abstraction has 6535 states and 7879 transitions. [2024-11-06 20:07:21,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:21,782 INFO L276 IsEmpty]: Start isEmpty. Operand 6535 states and 7879 transitions. [2024-11-06 20:07:21,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-06 20:07:21,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:21,784 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:07:21,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-06 20:07:21,784 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:21,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:21,785 INFO L85 PathProgramCache]: Analyzing trace with hash 75287222, now seen corresponding path program 1 times [2024-11-06 20:07:21,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:21,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569039706] [2024-11-06 20:07:21,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:21,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:22,196 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 172 proven. 70 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-06 20:07:22,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:22,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569039706] [2024-11-06 20:07:22,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569039706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 20:07:22,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644467311] [2024-11-06 20:07:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:22,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:07:22,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:07:22,202 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 20:07:22,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 20:07:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:22,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 20:07:22,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 20:07:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 172 proven. 70 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-06 20:07:22,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 20:07:22,806 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-06 20:07:22,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644467311] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-06 20:07:22,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-06 20:07:22,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-06 20:07:22,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005307616] [2024-11-06 20:07:22,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:22,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:07:22,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:22,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:07:22,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-06 20:07:22,808 INFO L87 Difference]: Start difference. First operand 6535 states and 7879 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:25,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:25,050 INFO L93 Difference]: Finished difference Result 21183 states and 25861 transitions. [2024-11-06 20:07:25,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:07:25,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 243 [2024-11-06 20:07:25,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:25,072 INFO L225 Difference]: With dead ends: 21183 [2024-11-06 20:07:25,073 INFO L226 Difference]: Without dead ends: 14218 [2024-11-06 20:07:25,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-06 20:07:25,078 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 889 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 3000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:25,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 162 Invalid, 3000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-06 20:07:25,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14218 states. [2024-11-06 20:07:25,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14218 to 14216. [2024-11-06 20:07:25,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14216 states, 14215 states have (on average 1.1974674639465352) internal successors, (17022), 14215 states have internal predecessors, (17022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:25,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14216 states to 14216 states and 17022 transitions. [2024-11-06 20:07:25,198 INFO L78 Accepts]: Start accepts. Automaton has 14216 states and 17022 transitions. Word has length 243 [2024-11-06 20:07:25,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:25,198 INFO L471 AbstractCegarLoop]: Abstraction has 14216 states and 17022 transitions. [2024-11-06 20:07:25,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:25,198 INFO L276 IsEmpty]: Start isEmpty. Operand 14216 states and 17022 transitions. [2024-11-06 20:07:25,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-06 20:07:25,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:25,201 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:07:25,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 20:07:25,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:07:25,406 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:25,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:25,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1432519742, now seen corresponding path program 1 times [2024-11-06 20:07:25,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:25,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940290753] [2024-11-06 20:07:25,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:25,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-06 20:07:25,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:25,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940290753] [2024-11-06 20:07:25,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940290753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:25,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:25,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:25,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113506528] [2024-11-06 20:07:25,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:25,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:25,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:25,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:25,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:25,595 INFO L87 Difference]: Start difference. First operand 14216 states and 17022 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:27,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:27,025 INFO L93 Difference]: Finished difference Result 31407 states and 37752 transitions. [2024-11-06 20:07:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:27,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 256 [2024-11-06 20:07:27,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:27,046 INFO L225 Difference]: With dead ends: 31407 [2024-11-06 20:07:27,046 INFO L226 Difference]: Without dead ends: 16767 [2024-11-06 20:07:27,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:27,056 INFO L432 NwaCegarLoop]: 834 mSDtfsCounter, 372 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:27,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 905 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-06 20:07:27,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16767 states. [2024-11-06 20:07:27,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16767 to 16767. [2024-11-06 20:07:27,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16767 states, 16766 states have (on average 1.1703447453179052) internal successors, (19622), 16766 states have internal predecessors, (19622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:27,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16767 states to 16767 states and 19622 transitions. [2024-11-06 20:07:27,186 INFO L78 Accepts]: Start accepts. Automaton has 16767 states and 19622 transitions. Word has length 256 [2024-11-06 20:07:27,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:27,187 INFO L471 AbstractCegarLoop]: Abstraction has 16767 states and 19622 transitions. [2024-11-06 20:07:27,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:27,187 INFO L276 IsEmpty]: Start isEmpty. Operand 16767 states and 19622 transitions. [2024-11-06 20:07:27,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-06 20:07:27,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:27,190 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:07:27,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-06 20:07:27,190 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:27,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:27,190 INFO L85 PathProgramCache]: Analyzing trace with hash -928589185, now seen corresponding path program 1 times [2024-11-06 20:07:27,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:27,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544231056] [2024-11-06 20:07:27,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:27,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-06 20:07:27,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:27,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544231056] [2024-11-06 20:07:27,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544231056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:27,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:27,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:27,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998691651] [2024-11-06 20:07:27,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:27,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:27,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:27,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:27,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:27,361 INFO L87 Difference]: Start difference. First operand 16767 states and 19622 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:28,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:28,720 INFO L93 Difference]: Finished difference Result 36513 states and 42736 transitions. [2024-11-06 20:07:28,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:28,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2024-11-06 20:07:28,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:28,744 INFO L225 Difference]: With dead ends: 36513 [2024-11-06 20:07:28,744 INFO L226 Difference]: Without dead ends: 19323 [2024-11-06 20:07:28,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:28,759 INFO L432 NwaCegarLoop]: 832 mSDtfsCounter, 422 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:28,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 906 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-06 20:07:28,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19323 states. [2024-11-06 20:07:28,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19323 to 19321. [2024-11-06 20:07:28,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19321 states, 19320 states have (on average 1.1544513457556935) internal successors, (22304), 19320 states have internal predecessors, (22304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:28,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19321 states to 19321 states and 22304 transitions. [2024-11-06 20:07:28,961 INFO L78 Accepts]: Start accepts. Automaton has 19321 states and 22304 transitions. Word has length 257 [2024-11-06 20:07:28,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:28,962 INFO L471 AbstractCegarLoop]: Abstraction has 19321 states and 22304 transitions. [2024-11-06 20:07:28,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:28,962 INFO L276 IsEmpty]: Start isEmpty. Operand 19321 states and 22304 transitions. [2024-11-06 20:07:28,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-06 20:07:28,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:28,965 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:07:28,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-06 20:07:28,965 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:28,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:28,966 INFO L85 PathProgramCache]: Analyzing trace with hash 499316572, now seen corresponding path program 1 times [2024-11-06 20:07:28,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:28,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914810305] [2024-11-06 20:07:28,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:28,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:29,106 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-06 20:07:29,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:29,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914810305] [2024-11-06 20:07:29,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914810305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:29,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:29,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:29,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977836925] [2024-11-06 20:07:29,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:29,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:29,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:29,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:29,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:29,108 INFO L87 Difference]: Start difference. First operand 19321 states and 22304 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:30,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:30,590 INFO L93 Difference]: Finished difference Result 50546 states and 58025 transitions. [2024-11-06 20:07:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:30,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2024-11-06 20:07:30,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:30,626 INFO L225 Difference]: With dead ends: 50546 [2024-11-06 20:07:30,626 INFO L226 Difference]: Without dead ends: 30794 [2024-11-06 20:07:30,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:30,642 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 450 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:30,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 420 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-06 20:07:30,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30794 states. [2024-11-06 20:07:30,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30794 to 28239. [2024-11-06 20:07:30,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28239 states, 28238 states have (on average 1.12929385933848) internal successors, (31889), 28238 states have internal predecessors, (31889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:30,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28239 states to 28239 states and 31889 transitions. [2024-11-06 20:07:30,890 INFO L78 Accepts]: Start accepts. Automaton has 28239 states and 31889 transitions. Word has length 291 [2024-11-06 20:07:30,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:30,891 INFO L471 AbstractCegarLoop]: Abstraction has 28239 states and 31889 transitions. [2024-11-06 20:07:30,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:30,891 INFO L276 IsEmpty]: Start isEmpty. Operand 28239 states and 31889 transitions. [2024-11-06 20:07:30,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-06 20:07:30,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:30,895 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-06 20:07:30,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-06 20:07:30,895 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:30,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:30,896 INFO L85 PathProgramCache]: Analyzing trace with hash 530058454, now seen corresponding path program 1 times [2024-11-06 20:07:30,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:30,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213849248] [2024-11-06 20:07:30,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:30,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:31,104 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-06 20:07:31,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:31,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213849248] [2024-11-06 20:07:31,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213849248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:31,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:31,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:31,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966453997] [2024-11-06 20:07:31,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:31,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:31,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:31,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:31,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:31,107 INFO L87 Difference]: Start difference. First operand 28239 states and 31889 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:32,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:32,517 INFO L93 Difference]: Finished difference Result 66262 states and 75098 transitions. [2024-11-06 20:07:32,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:32,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 309 [2024-11-06 20:07:32,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:32,554 INFO L225 Difference]: With dead ends: 66262 [2024-11-06 20:07:32,554 INFO L226 Difference]: Without dead ends: 36748 [2024-11-06 20:07:32,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:32,571 INFO L432 NwaCegarLoop]: 717 mSDtfsCounter, 342 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:32,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 776 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-06 20:07:32,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36748 states. [2024-11-06 20:07:32,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36748 to 35471. [2024-11-06 20:07:32,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35471 states, 35470 states have (on average 1.1106287003101212) internal successors, (39394), 35470 states have internal predecessors, (39394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:32,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 39394 transitions. [2024-11-06 20:07:32,958 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 39394 transitions. Word has length 309 [2024-11-06 20:07:32,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:32,958 INFO L471 AbstractCegarLoop]: Abstraction has 35471 states and 39394 transitions. [2024-11-06 20:07:32,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:32,958 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 39394 transitions. [2024-11-06 20:07:32,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-06 20:07:32,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:32,961 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:07:32,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-06 20:07:32,961 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:32,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:32,962 INFO L85 PathProgramCache]: Analyzing trace with hash 2093736345, now seen corresponding path program 1 times [2024-11-06 20:07:32,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:32,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310782781] [2024-11-06 20:07:32,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:32,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 313 proven. 73 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-06 20:07:33,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:33,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310782781] [2024-11-06 20:07:33,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310782781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 20:07:33,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463105667] [2024-11-06 20:07:33,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:33,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:07:33,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:07:33,250 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 20:07:33,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 20:07:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:33,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 20:07:33,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 20:07:33,501 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 313 proven. 73 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-06 20:07:33,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 20:07:33,678 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-06 20:07:33,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463105667] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-06 20:07:33,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-06 20:07:33,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-06 20:07:33,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772360019] [2024-11-06 20:07:33,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:33,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:07:33,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:33,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:07:33,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-06 20:07:33,681 INFO L87 Difference]: Start difference. First operand 35471 states and 39394 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:35,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:35,960 INFO L93 Difference]: Finished difference Result 85427 states and 94984 transitions. [2024-11-06 20:07:35,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:07:35,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 317 [2024-11-06 20:07:35,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:36,002 INFO L225 Difference]: With dead ends: 85427 [2024-11-06 20:07:36,003 INFO L226 Difference]: Without dead ends: 49531 [2024-11-06 20:07:36,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-06 20:07:36,022 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 841 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 2823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:36,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 187 Invalid, 2823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-06 20:07:36,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49531 states. [2024-11-06 20:07:36,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49531 to 46978. [2024-11-06 20:07:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46978 states, 46977 states have (on average 1.1148647210336973) internal successors, (52373), 46977 states have internal predecessors, (52373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:36,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46978 states to 46978 states and 52373 transitions. [2024-11-06 20:07:36,571 INFO L78 Accepts]: Start accepts. Automaton has 46978 states and 52373 transitions. Word has length 317 [2024-11-06 20:07:36,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:36,572 INFO L471 AbstractCegarLoop]: Abstraction has 46978 states and 52373 transitions. [2024-11-06 20:07:36,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:36,572 INFO L276 IsEmpty]: Start isEmpty. Operand 46978 states and 52373 transitions. [2024-11-06 20:07:36,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2024-11-06 20:07:36,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:36,586 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:07:36,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 20:07:36,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:07:36,791 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:36,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:36,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1144793932, now seen corresponding path program 1 times [2024-11-06 20:07:36,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:36,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557001272] [2024-11-06 20:07:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:36,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:37,047 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-11-06 20:07:37,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:37,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557001272] [2024-11-06 20:07:37,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557001272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:37,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:37,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:37,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429441791] [2024-11-06 20:07:37,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:37,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:37,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:37,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:37,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:37,050 INFO L87 Difference]: Start difference. First operand 46978 states and 52373 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:38,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:38,615 INFO L93 Difference]: Finished difference Result 114426 states and 127136 transitions. [2024-11-06 20:07:38,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:38,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 415 [2024-11-06 20:07:38,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:38,684 INFO L225 Difference]: With dead ends: 114426 [2024-11-06 20:07:38,684 INFO L226 Difference]: Without dead ends: 67024 [2024-11-06 20:07:38,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:38,719 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 472 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:38,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 348 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1362 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-06 20:07:38,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67024 states. [2024-11-06 20:07:39,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67024 to 65710. [2024-11-06 20:07:39,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65710 states, 65709 states have (on average 1.1053584744859912) internal successors, (72632), 65709 states have internal predecessors, (72632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:39,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65710 states to 65710 states and 72632 transitions. [2024-11-06 20:07:39,503 INFO L78 Accepts]: Start accepts. Automaton has 65710 states and 72632 transitions. Word has length 415 [2024-11-06 20:07:39,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:39,504 INFO L471 AbstractCegarLoop]: Abstraction has 65710 states and 72632 transitions. [2024-11-06 20:07:39,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:39,504 INFO L276 IsEmpty]: Start isEmpty. Operand 65710 states and 72632 transitions. [2024-11-06 20:07:39,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2024-11-06 20:07:39,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:39,512 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:07:39,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-06 20:07:39,513 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:39,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:39,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1100011165, now seen corresponding path program 1 times [2024-11-06 20:07:39,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:39,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331064809] [2024-11-06 20:07:39,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:39,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:39,780 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-06 20:07:39,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:39,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331064809] [2024-11-06 20:07:39,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331064809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:39,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:39,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:39,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20397771] [2024-11-06 20:07:39,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:39,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:39,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:39,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:39,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:39,783 INFO L87 Difference]: Start difference. First operand 65710 states and 72632 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:41,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:41,505 INFO L93 Difference]: Finished difference Result 145895 states and 161356 transitions. [2024-11-06 20:07:41,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:41,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 442 [2024-11-06 20:07:41,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:41,574 INFO L225 Difference]: With dead ends: 145895 [2024-11-06 20:07:41,574 INFO L226 Difference]: Without dead ends: 79761 [2024-11-06 20:07:41,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:41,595 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 489 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:41,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 301 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-06 20:07:41,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79761 states. [2024-11-06 20:07:42,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79761 to 60579. [2024-11-06 20:07:42,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60579 states, 60578 states have (on average 1.1075142791112285) internal successors, (67091), 60578 states have internal predecessors, (67091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:42,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60579 states to 60579 states and 67091 transitions. [2024-11-06 20:07:42,259 INFO L78 Accepts]: Start accepts. Automaton has 60579 states and 67091 transitions. Word has length 442 [2024-11-06 20:07:42,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:42,260 INFO L471 AbstractCegarLoop]: Abstraction has 60579 states and 67091 transitions. [2024-11-06 20:07:42,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:42,260 INFO L276 IsEmpty]: Start isEmpty. Operand 60579 states and 67091 transitions. [2024-11-06 20:07:42,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2024-11-06 20:07:42,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:42,266 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:07:42,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-06 20:07:42,266 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:42,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:42,267 INFO L85 PathProgramCache]: Analyzing trace with hash -63934917, now seen corresponding path program 1 times [2024-11-06 20:07:42,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:42,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132600850] [2024-11-06 20:07:42,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:42,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-06 20:07:42,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:42,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132600850] [2024-11-06 20:07:42,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132600850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:42,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:42,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:42,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907022029] [2024-11-06 20:07:42,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:42,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:42,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:42,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:42,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:42,469 INFO L87 Difference]: Start difference. First operand 60579 states and 67091 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:43,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:43,872 INFO L93 Difference]: Finished difference Result 133504 states and 147828 transitions. [2024-11-06 20:07:43,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:43,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 454 [2024-11-06 20:07:43,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:43,939 INFO L225 Difference]: With dead ends: 133504 [2024-11-06 20:07:43,939 INFO L226 Difference]: Without dead ends: 72495 [2024-11-06 20:07:43,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:43,975 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 502 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:43,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 169 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-06 20:07:44,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72495 states. [2024-11-06 20:07:44,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72495 to 69501. [2024-11-06 20:07:44,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69501 states, 69500 states have (on average 1.1070071942446043) internal successors, (76937), 69500 states have internal predecessors, (76937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:44,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69501 states to 69501 states and 76937 transitions. [2024-11-06 20:07:44,782 INFO L78 Accepts]: Start accepts. Automaton has 69501 states and 76937 transitions. Word has length 454 [2024-11-06 20:07:44,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:44,782 INFO L471 AbstractCegarLoop]: Abstraction has 69501 states and 76937 transitions. [2024-11-06 20:07:44,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:44,782 INFO L276 IsEmpty]: Start isEmpty. Operand 69501 states and 76937 transitions. [2024-11-06 20:07:44,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2024-11-06 20:07:44,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:44,790 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:07:44,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-06 20:07:44,790 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:44,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:44,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1567427203, now seen corresponding path program 1 times [2024-11-06 20:07:44,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:44,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473473165] [2024-11-06 20:07:44,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:44,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:07:45,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:45,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473473165] [2024-11-06 20:07:45,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473473165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:45,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:45,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 20:07:45,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264753021] [2024-11-06 20:07:45,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:45,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:07:45,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:45,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:07:45,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:07:45,160 INFO L87 Difference]: Start difference. First operand 69501 states and 76937 transitions. Second operand has 4 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:47,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:47,419 INFO L93 Difference]: Finished difference Result 164575 states and 182145 transitions. [2024-11-06 20:07:47,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:07:47,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 0 states have call successors, (0), 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 475 [2024-11-06 20:07:47,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:47,520 INFO L225 Difference]: With dead ends: 164575 [2024-11-06 20:07:47,520 INFO L226 Difference]: Without dead ends: 95076 [2024-11-06 20:07:47,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:07:47,576 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 639 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2333 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 2783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:47,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 175 Invalid, 2783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2333 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-06 20:07:47,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95076 states. [2024-11-06 20:07:48,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95076 to 89537. [2024-11-06 20:07:48,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89537 states, 89536 states have (on average 1.1079342387419586) internal successors, (99200), 89536 states have internal predecessors, (99200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:48,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89537 states to 89537 states and 99200 transitions. [2024-11-06 20:07:48,824 INFO L78 Accepts]: Start accepts. Automaton has 89537 states and 99200 transitions. Word has length 475 [2024-11-06 20:07:48,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:48,824 INFO L471 AbstractCegarLoop]: Abstraction has 89537 states and 99200 transitions. [2024-11-06 20:07:48,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:48,824 INFO L276 IsEmpty]: Start isEmpty. Operand 89537 states and 99200 transitions. [2024-11-06 20:07:48,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2024-11-06 20:07:48,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:48,833 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:07:48,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-06 20:07:48,833 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:48,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:48,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1379758595, now seen corresponding path program 1 times [2024-11-06 20:07:48,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:48,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812359128] [2024-11-06 20:07:48,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:48,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:49,508 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 263 proven. 82 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-06 20:07:49,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:49,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812359128] [2024-11-06 20:07:49,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812359128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 20:07:49,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205490813] [2024-11-06 20:07:49,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:49,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:07:49,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:07:49,511 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 20:07:49,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 20:07:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:49,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-06 20:07:49,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 20:07:50,424 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 263 proven. 82 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-06 20:07:50,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 20:07:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 263 proven. 82 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-06 20:07:51,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205490813] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 20:07:51,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 20:07:51,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-06 20:07:51,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109777775] [2024-11-06 20:07:51,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 20:07:51,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-06 20:07:51,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:51,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-06 20:07:51,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-06 20:07:51,435 INFO L87 Difference]: Start difference. First operand 89537 states and 99200 transitions. Second operand has 8 states, 8 states have (on average 120.75) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:56,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:56,615 INFO L93 Difference]: Finished difference Result 204184 states and 226147 transitions. [2024-11-06 20:07:56,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 20:07:56,616 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 120.75) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 518 [2024-11-06 20:07:56,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:56,734 INFO L225 Difference]: With dead ends: 204184 [2024-11-06 20:07:56,735 INFO L226 Difference]: Without dead ends: 113799 [2024-11-06 20:07:56,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1031 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-06 20:07:56,764 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 3024 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 5933 mSolverCounterSat, 1257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3024 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 7190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1257 IncrementalHoareTripleChecker+Valid, 5933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:56,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3024 Valid, 317 Invalid, 7190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1257 Valid, 5933 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-06 20:07:56,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113799 states. [2024-11-06 20:07:57,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113799 to 104420. [2024-11-06 20:07:57,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104420 states, 104419 states have (on average 1.1082370066750304) internal successors, (115721), 104419 states have internal predecessors, (115721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:57,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104420 states to 104420 states and 115721 transitions. [2024-11-06 20:07:57,701 INFO L78 Accepts]: Start accepts. Automaton has 104420 states and 115721 transitions. Word has length 518 [2024-11-06 20:07:57,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:57,701 INFO L471 AbstractCegarLoop]: Abstraction has 104420 states and 115721 transitions. [2024-11-06 20:07:57,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 120.75) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:57,701 INFO L276 IsEmpty]: Start isEmpty. Operand 104420 states and 115721 transitions. [2024-11-06 20:07:57,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2024-11-06 20:07:57,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:57,708 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:07:57,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-06 20:07:57,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:07:57,909 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:57,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:57,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1004549033, now seen corresponding path program 1 times [2024-11-06 20:07:57,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:57,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941435325] [2024-11-06 20:07:57,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:57,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-06 20:07:58,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:58,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941435325] [2024-11-06 20:07:58,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941435325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:58,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:58,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:58,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082117401] [2024-11-06 20:07:58,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:58,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:58,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:58,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:58,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:58,266 INFO L87 Difference]: Start difference. First operand 104420 states and 115721 transitions. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:07:59,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:59,723 INFO L93 Difference]: Finished difference Result 206276 states and 228612 transitions. [2024-11-06 20:07:59,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:59,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 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 523 [2024-11-06 20:07:59,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:59,820 INFO L225 Difference]: With dead ends: 206276 [2024-11-06 20:07:59,820 INFO L226 Difference]: Without dead ends: 101857 [2024-11-06 20:07:59,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:59,866 INFO L432 NwaCegarLoop]: 655 mSDtfsCounter, 479 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:59,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 717 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-06 20:07:59,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101857 states. [2024-11-06 20:08:00,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101857 to 98024. [2024-11-06 20:08:00,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98024 states, 98023 states have (on average 1.0869999897983127) internal successors, (106551), 98023 states have internal predecessors, (106551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:08:00,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98024 states to 98024 states and 106551 transitions. [2024-11-06 20:08:00,963 INFO L78 Accepts]: Start accepts. Automaton has 98024 states and 106551 transitions. Word has length 523 [2024-11-06 20:08:00,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:08:00,963 INFO L471 AbstractCegarLoop]: Abstraction has 98024 states and 106551 transitions. [2024-11-06 20:08:00,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:08:00,963 INFO L276 IsEmpty]: Start isEmpty. Operand 98024 states and 106551 transitions. [2024-11-06 20:08:00,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2024-11-06 20:08:00,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:08:00,975 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:08:00,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-06 20:08:00,975 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:08:00,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:08:00,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1874865253, now seen corresponding path program 1 times [2024-11-06 20:08:00,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:08:00,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070609015] [2024-11-06 20:08:00,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:08:00,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:08:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:08:01,580 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-06 20:08:01,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:08:01,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070609015] [2024-11-06 20:08:01,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070609015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:08:01,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:08:01,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 20:08:01,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469723562] [2024-11-06 20:08:01,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:08:01,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:08:01,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:08:01,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:08:01,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:08:01,583 INFO L87 Difference]: Start difference. First operand 98024 states and 106551 transitions. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:08:03,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:08:03,534 INFO L93 Difference]: Finished difference Result 213519 states and 232155 transitions. [2024-11-06 20:08:03,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:08:03,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 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 604 [2024-11-06 20:08:03,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:08:03,658 INFO L225 Difference]: With dead ends: 213519 [2024-11-06 20:08:03,658 INFO L226 Difference]: Without dead ends: 115497 [2024-11-06 20:08:03,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:08:03,717 INFO L432 NwaCegarLoop]: 577 mSDtfsCounter, 538 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-06 20:08:03,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 653 Invalid, 2477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2267 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-06 20:08:03,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115497 states. [2024-11-06 20:08:04,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115497 to 111645. [2024-11-06 20:08:04,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111645 states, 111644 states have (on average 1.0894181505499623) internal successors, (121627), 111644 states have internal predecessors, (121627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:08:04,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111645 states to 111645 states and 121627 transitions. [2024-11-06 20:08:05,001 INFO L78 Accepts]: Start accepts. Automaton has 111645 states and 121627 transitions. Word has length 604 [2024-11-06 20:08:05,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:08:05,001 INFO L471 AbstractCegarLoop]: Abstraction has 111645 states and 121627 transitions. [2024-11-06 20:08:05,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:08:05,001 INFO L276 IsEmpty]: Start isEmpty. Operand 111645 states and 121627 transitions. [2024-11-06 20:08:05,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2024-11-06 20:08:05,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:08:05,015 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:08:05,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-06 20:08:05,015 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:08:05,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:08:05,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1557473164, now seen corresponding path program 1 times [2024-11-06 20:08:05,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:08:05,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16715650] [2024-11-06 20:08:05,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:08:05,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:08:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:08:05,404 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2024-11-06 20:08:05,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:08:05,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16715650] [2024-11-06 20:08:05,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16715650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:08:05,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:08:05,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:08:05,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316826377] [2024-11-06 20:08:05,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:08:05,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:08:05,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:08:05,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:08:05,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:08:05,406 INFO L87 Difference]: Start difference. First operand 111645 states and 121627 transitions. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 2 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:08:06,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:08:06,525 INFO L93 Difference]: Finished difference Result 219442 states and 238906 transitions. [2024-11-06 20:08:06,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:08:06,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 2 states have internal predecessors, (414), 0 states have call successors, (0), 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 615 [2024-11-06 20:08:06,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:08:06,650 INFO L225 Difference]: With dead ends: 219442 [2024-11-06 20:08:06,650 INFO L226 Difference]: Without dead ends: 107799 [2024-11-06 20:08:06,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:08:06,697 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 431 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 20:08:06,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 98 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 20:08:06,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107799 states. [2024-11-06 20:08:07,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107799 to 107370. [2024-11-06 20:08:07,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107370 states, 107369 states have (on average 1.0880142312958117) internal successors, (116819), 107369 states have internal predecessors, (116819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:08:07,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107370 states to 107370 states and 116819 transitions. [2024-11-06 20:08:07,904 INFO L78 Accepts]: Start accepts. Automaton has 107370 states and 116819 transitions. Word has length 615 [2024-11-06 20:08:07,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:08:07,904 INFO L471 AbstractCegarLoop]: Abstraction has 107370 states and 116819 transitions. [2024-11-06 20:08:07,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 2 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:08:07,904 INFO L276 IsEmpty]: Start isEmpty. Operand 107370 states and 116819 transitions. [2024-11-06 20:08:07,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2024-11-06 20:08:07,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:08:07,917 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:08:07,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-06 20:08:07,917 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:08:07,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:08:07,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1519841183, now seen corresponding path program 1 times [2024-11-06 20:08:07,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:08:07,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589657432] [2024-11-06 20:08:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:08:07,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:08:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:08:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-06 20:08:08,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:08:08,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589657432] [2024-11-06 20:08:08,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589657432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:08:08,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:08:08,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 20:08:08,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889317358] [2024-11-06 20:08:08,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:08:08,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:08:08,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:08:08,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:08:08,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:08:08,508 INFO L87 Difference]: Start difference. First operand 107370 states and 116819 transitions. Second operand has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:08:10,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:08:10,759 INFO L93 Difference]: Finished difference Result 238170 states and 258629 transitions. [2024-11-06 20:08:10,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:08:10,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 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 648 [2024-11-06 20:08:10,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:08:10,888 INFO L225 Difference]: With dead ends: 238170 [2024-11-06 20:08:10,888 INFO L226 Difference]: Without dead ends: 129523 [2024-11-06 20:08:10,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:08:10,951 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 761 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2497 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 2902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 2497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-06 20:08:10,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 163 Invalid, 2902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 2497 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-06 20:08:11,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129523 states. [2024-11-06 20:08:12,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129523 to 120130. [2024-11-06 20:08:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120130 states, 120129 states have (on average 1.0883383695860283) internal successors, (130741), 120129 states have internal predecessors, (130741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:08:12,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120130 states to 120130 states and 130741 transitions. [2024-11-06 20:08:12,675 INFO L78 Accepts]: Start accepts. Automaton has 120130 states and 130741 transitions. Word has length 648 [2024-11-06 20:08:12,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:08:12,675 INFO L471 AbstractCegarLoop]: Abstraction has 120130 states and 130741 transitions. [2024-11-06 20:08:12,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:08:12,675 INFO L276 IsEmpty]: Start isEmpty. Operand 120130 states and 130741 transitions. [2024-11-06 20:08:12,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2024-11-06 20:08:12,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:08:12,690 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:08:12,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-06 20:08:12,690 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:08:12,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:08:12,691 INFO L85 PathProgramCache]: Analyzing trace with hash 517758705, now seen corresponding path program 1 times [2024-11-06 20:08:12,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:08:12,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970850092] [2024-11-06 20:08:12,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:08:12,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:08:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:08:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-06 20:08:13,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:08:13,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970850092] [2024-11-06 20:08:13,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970850092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:08:13,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:08:13,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 20:08:13,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872049562] [2024-11-06 20:08:13,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:08:13,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:08:13,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:08:13,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:08:13,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:08:13,388 INFO L87 Difference]: Start difference. First operand 120130 states and 130741 transitions. Second operand has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:08:15,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:08:15,379 INFO L93 Difference]: Finished difference Result 246664 states and 268267 transitions. [2024-11-06 20:08:15,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:08:15,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 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 667 [2024-11-06 20:08:15,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:08:15,503 INFO L225 Difference]: With dead ends: 246664 [2024-11-06 20:08:15,503 INFO L226 Difference]: Without dead ends: 126108 [2024-11-06 20:08:15,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:08:15,566 INFO L432 NwaCegarLoop]: 577 mSDtfsCounter, 1228 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1879 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 2229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-06 20:08:15,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 641 Invalid, 2229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1879 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-06 20:08:15,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126108 states. [2024-11-06 20:08:16,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126108 to 120972. [2024-11-06 20:08:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120972 states, 120971 states have (on average 1.0860784816195617) internal successors, (131384), 120971 states have internal predecessors, (131384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:08:16,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120972 states to 120972 states and 131384 transitions. [2024-11-06 20:08:16,979 INFO L78 Accepts]: Start accepts. Automaton has 120972 states and 131384 transitions. Word has length 667 [2024-11-06 20:08:16,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:08:16,979 INFO L471 AbstractCegarLoop]: Abstraction has 120972 states and 131384 transitions. [2024-11-06 20:08:16,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:08:16,980 INFO L276 IsEmpty]: Start isEmpty. Operand 120972 states and 131384 transitions. [2024-11-06 20:08:16,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2024-11-06 20:08:16,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:08:16,994 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:08:16,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-06 20:08:16,994 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:08:16,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:08:16,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1279939234, now seen corresponding path program 1 times [2024-11-06 20:08:16,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:08:16,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692854110] [2024-11-06 20:08:16,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:08:16,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:08:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:08:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 597 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-06 20:08:17,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:08:17,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692854110] [2024-11-06 20:08:17,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692854110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:08:17,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:08:17,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:08:17,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882459413] [2024-11-06 20:08:17,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:08:17,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:08:17,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:08:17,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:08:17,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:08:17,273 INFO L87 Difference]: Start difference. First operand 120972 states and 131384 transitions. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:08:19,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:08:19,174 INFO L93 Difference]: Finished difference Result 255564 states and 277160 transitions. [2024-11-06 20:08:19,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:08:19,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 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 673 [2024-11-06 20:08:19,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:08:19,326 INFO L225 Difference]: With dead ends: 255564 [2024-11-06 20:08:19,326 INFO L226 Difference]: Without dead ends: 129476 [2024-11-06 20:08:19,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:08:19,408 INFO L432 NwaCegarLoop]: 604 mSDtfsCounter, 307 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-06 20:08:19,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 635 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-06 20:08:19,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129476 states. [2024-11-06 20:08:20,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129476 to 122235. [2024-11-06 20:08:20,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122235 states, 122234 states have (on average 1.076958947592323) internal successors, (131641), 122234 states have internal predecessors, (131641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:08:20,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122235 states to 122235 states and 131641 transitions. [2024-11-06 20:08:20,822 INFO L78 Accepts]: Start accepts. Automaton has 122235 states and 131641 transitions. Word has length 673 [2024-11-06 20:08:20,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:08:20,822 INFO L471 AbstractCegarLoop]: Abstraction has 122235 states and 131641 transitions. [2024-11-06 20:08:20,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:08:20,823 INFO L276 IsEmpty]: Start isEmpty. Operand 122235 states and 131641 transitions. [2024-11-06 20:08:20,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2024-11-06 20:08:20,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:08:20,836 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:08:20,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-06 20:08:20,836 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:08:20,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:08:20,837 INFO L85 PathProgramCache]: Analyzing trace with hash -91029827, now seen corresponding path program 1 times [2024-11-06 20:08:20,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:08:20,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425495219] [2024-11-06 20:08:20,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:08:20,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:08:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:08:21,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 747 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2024-11-06 20:08:21,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:08:21,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425495219] [2024-11-06 20:08:21,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425495219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:08:21,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:08:21,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:08:21,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158988007] [2024-11-06 20:08:21,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:08:21,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:08:21,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:08:21,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:08:21,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:08:21,281 INFO L87 Difference]: Start difference. First operand 122235 states and 131641 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 20:08:22,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:08:22,633 INFO L93 Difference]: Finished difference Result 256377 states and 276004 transitions. [2024-11-06 20:08:22,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:08:22,634 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 677 [2024-11-06 20:08:22,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:08:22,972 INFO L225 Difference]: With dead ends: 256377 [2024-11-06 20:08:22,972 INFO L226 Difference]: Without dead ends: 134144 [2024-11-06 20:08:23,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:08:23,018 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 389 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-06 20:08:23,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 308 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-06 20:08:23,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134144 states.