./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label33.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/eca-rers2012/Problem12_label33.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', '18ad5ec6bc1db1d6d896db79319bb0ca45f8aff62ac630628a891f63c8426bb4'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label33.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 18ad5ec6bc1db1d6d896db79319bb0ca45f8aff62ac630628a891f63c8426bb4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 19:43:15,238 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 19:43:15,293 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 19:43:15,301 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 19:43:15,301 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 19:43:15,327 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 19:43:15,328 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 19:43:15,329 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 19:43:15,329 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 19:43:15,329 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 19:43:15,329 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 19:43:15,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 19:43:15,330 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 19:43:15,330 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 19:43:15,330 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 19:43:15,330 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 19:43:15,330 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 19:43:15,331 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 19:43:15,331 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 19:43:15,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 19:43:15,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 19:43:15,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 19:43:15,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 19:43:15,331 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 19:43:15,332 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 19:43:15,332 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 19:43:15,332 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 19:43:15,332 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 19:43:15,332 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 19:43:15,332 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 19:43:15,332 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 19:43:15,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 19:43:15,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 19:43:15,332 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 19:43:15,332 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 19:43:15,333 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 19:43:15,333 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 19:43:15,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 19:43:15,333 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 19:43:15,333 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 19:43:15,333 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 19:43:15,333 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 19:43:15,333 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 -> 18ad5ec6bc1db1d6d896db79319bb0ca45f8aff62ac630628a891f63c8426bb4 [2024-11-06 19:43:15,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 19:43:15,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 19:43:15,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 19:43:15,596 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 19:43:15,596 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 19:43:15,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label33.c [2024-11-06 19:43:16,829 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 19:43:17,275 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 19:43:17,277 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label33.c [2024-11-06 19:43:17,309 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8040ea90a/75d3c0b7091d4fccaf64fee28713eb3e/FLAG902a740ea [2024-11-06 19:43:17,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8040ea90a/75d3c0b7091d4fccaf64fee28713eb3e [2024-11-06 19:43:17,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 19:43:17,416 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 19:43:17,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 19:43:17,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 19:43:17,421 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 19:43:17,422 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:43:17" (1/1) ... [2024-11-06 19:43:17,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34c4bb82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:17, skipping insertion in model container [2024-11-06 19:43:17,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:43:17" (1/1) ... [2024-11-06 19:43:17,495 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 19:43:17,677 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label33.c[6146,6159] [2024-11-06 19:43:18,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 19:43:18,118 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 19:43:18,136 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label33.c[6146,6159] [2024-11-06 19:43:18,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 19:43:18,389 INFO L204 MainTranslator]: Completed translation [2024-11-06 19:43:18,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18 WrapperNode [2024-11-06 19:43:18,390 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 19:43:18,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 19:43:18,391 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 19:43:18,391 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 19:43:18,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... [2024-11-06 19:43:18,466 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... [2024-11-06 19:43:18,773 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-11-06 19:43:18,774 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 19:43:18,775 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 19:43:18,775 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 19:43:18,775 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 19:43:18,783 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... [2024-11-06 19:43:18,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... [2024-11-06 19:43:18,822 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... [2024-11-06 19:43:18,964 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-06 19:43:18,965 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... [2024-11-06 19:43:18,965 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... [2024-11-06 19:43:19,128 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... [2024-11-06 19:43:19,188 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... [2024-11-06 19:43:19,243 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... [2024-11-06 19:43:19,265 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... [2024-11-06 19:43:19,351 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 19:43:19,353 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 19:43:19,354 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 19:43:19,354 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 19:43:19,355 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... [2024-11-06 19:43:19,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 19:43:19,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:43:19,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 19:43:19,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 19:43:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 19:43:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 19:43:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 19:43:19,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 19:43:19,472 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 19:43:19,473 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 19:43:22,971 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-06 19:43:22,972 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 19:43:23,000 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 19:43:23,000 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 19:43:23,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:43:23 BoogieIcfgContainer [2024-11-06 19:43:23,000 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 19:43:23,005 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 19:43:23,005 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 19:43:23,009 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 19:43:23,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:43:17" (1/3) ... [2024-11-06 19:43:23,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da2ba4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:43:23, skipping insertion in model container [2024-11-06 19:43:23,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (2/3) ... [2024-11-06 19:43:23,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da2ba4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:43:23, skipping insertion in model container [2024-11-06 19:43:23,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:43:23" (3/3) ... [2024-11-06 19:43:23,011 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label33.c [2024-11-06 19:43:23,024 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 19:43:23,024 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 19:43:23,090 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 19:43:23,099 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;@46523490, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 19:43:23,099 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 19:43:23,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:23,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-06 19:43:23,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:43:23,110 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:43:23,110 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:43:23,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:43:23,113 INFO L85 PathProgramCache]: Analyzing trace with hash 301649817, now seen corresponding path program 1 times [2024-11-06 19:43:23,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:43:23,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457475344] [2024-11-06 19:43:23,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:43:23,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:43:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:43:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:43:23,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:43:23,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457475344] [2024-11-06 19:43:23,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457475344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:43:23,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:43:23,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:43:23,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422397549] [2024-11-06 19:43:23,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:43:23,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 19:43:23,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:43:23,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 19:43:23,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:43:23,685 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:28,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:43:28,763 INFO L93 Difference]: Finished difference Result 3142 states and 6130 transitions. [2024-11-06 19:43:28,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 19:43:28,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-06 19:43:28,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:43:28,783 INFO L225 Difference]: With dead ends: 3142 [2024-11-06 19:43:28,783 INFO L226 Difference]: Without dead ends: 2257 [2024-11-06 19:43:28,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-06 19:43:28,790 INFO L432 NwaCegarLoop]: 738 mSDtfsCounter, 2223 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 5499 mSolverCounterSat, 1273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 6772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1273 IncrementalHoareTripleChecker+Valid, 5499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-06 19:43:28,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2223 Valid, 765 Invalid, 6772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1273 Valid, 5499 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-06 19:43:28,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2024-11-06 19:43:28,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2024-11-06 19:43:28,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.5749113475177305) internal successors, (3553), 2256 states have internal predecessors, (3553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:28,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3553 transitions. [2024-11-06 19:43:28,903 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3553 transitions. Word has length 49 [2024-11-06 19:43:28,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:43:28,904 INFO L471 AbstractCegarLoop]: Abstraction has 2257 states and 3553 transitions. [2024-11-06 19:43:28,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:28,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3553 transitions. [2024-11-06 19:43:28,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-06 19:43:28,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:43:28,908 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 19:43:28,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 19:43:28,909 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:43:28,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:43:28,909 INFO L85 PathProgramCache]: Analyzing trace with hash -2123608565, now seen corresponding path program 1 times [2024-11-06 19:43:28,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:43:28,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167704612] [2024-11-06 19:43:28,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:43:28,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:43:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:43:29,309 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:43:29,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:43:29,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167704612] [2024-11-06 19:43:29,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167704612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:43:29,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:43:29,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:43:29,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550391045] [2024-11-06 19:43:29,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:43:29,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 19:43:29,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:43:29,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 19:43:29,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:43:29,316 INFO L87 Difference]: Start difference. First operand 2257 states and 3553 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:32,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:43:32,529 INFO L93 Difference]: Finished difference Result 6051 states and 9916 transitions. [2024-11-06 19:43:32,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 19:43:32,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2024-11-06 19:43:32,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:43:32,541 INFO L225 Difference]: With dead ends: 6051 [2024-11-06 19:43:32,541 INFO L226 Difference]: Without dead ends: 3759 [2024-11-06 19:43:32,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:43:32,545 INFO L432 NwaCegarLoop]: 674 mSDtfsCounter, 688 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3779 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 4443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-06 19:43:32,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 692 Invalid, 4443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3779 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-06 19:43:32,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2024-11-06 19:43:32,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3008. [2024-11-06 19:43:32,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.4319920186232125) internal successors, (4306), 3007 states have internal predecessors, (4306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:32,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4306 transitions. [2024-11-06 19:43:32,592 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4306 transitions. Word has length 120 [2024-11-06 19:43:32,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:43:32,592 INFO L471 AbstractCegarLoop]: Abstraction has 3008 states and 4306 transitions. [2024-11-06 19:43:32,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:32,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4306 transitions. [2024-11-06 19:43:32,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-06 19:43:32,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:43:32,597 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:43:32,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 19:43:32,597 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:43:32,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:43:32,598 INFO L85 PathProgramCache]: Analyzing trace with hash -819857147, now seen corresponding path program 1 times [2024-11-06 19:43:32,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:43:32,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644514303] [2024-11-06 19:43:32,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:43:32,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:43:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:43:32,851 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-06 19:43:32,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:43:32,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644514303] [2024-11-06 19:43:32,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644514303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:43:32,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:43:32,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:43:32,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261016518] [2024-11-06 19:43:32,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:43:32,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:43:32,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:43:32,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:43:32,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:43:32,855 INFO L87 Difference]: Start difference. First operand 3008 states and 4306 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:34,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:43:34,833 INFO L93 Difference]: Finished difference Result 8267 states and 11519 transitions. [2024-11-06 19:43:34,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:43:34,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2024-11-06 19:43:34,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:43:34,848 INFO L225 Difference]: With dead ends: 8267 [2024-11-06 19:43:34,848 INFO L226 Difference]: Without dead ends: 5261 [2024-11-06 19:43:34,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:43:34,852 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 697 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-06 19:43:34,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 427 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-06 19:43:34,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2024-11-06 19:43:34,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261. [2024-11-06 19:43:34,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.1982889733840305) internal successors, (6303), 5260 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:34,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 6303 transitions. [2024-11-06 19:43:34,920 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 6303 transitions. Word has length 259 [2024-11-06 19:43:34,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:43:34,920 INFO L471 AbstractCegarLoop]: Abstraction has 5261 states and 6303 transitions. [2024-11-06 19:43:34,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:34,921 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 6303 transitions. [2024-11-06 19:43:34,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-06 19:43:34,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:43:34,923 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:43:34,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 19:43:34,924 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:43:34,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:43:34,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2005660694, now seen corresponding path program 1 times [2024-11-06 19:43:34,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:43:34,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577074760] [2024-11-06 19:43:34,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:43:34,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:43:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:43:35,297 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-06 19:43:35,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:43:35,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577074760] [2024-11-06 19:43:35,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577074760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:43:35,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:43:35,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:43:35,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098073874] [2024-11-06 19:43:35,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:43:35,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 19:43:35,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:43:35,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 19:43:35,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:43:35,300 INFO L87 Difference]: Start difference. First operand 5261 states and 6303 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:37,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:43:37,788 INFO L93 Difference]: Finished difference Result 12061 states and 15068 transitions. [2024-11-06 19:43:37,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 19:43:37,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 261 [2024-11-06 19:43:37,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:43:37,807 INFO L225 Difference]: With dead ends: 12061 [2024-11-06 19:43:37,807 INFO L226 Difference]: Without dead ends: 7516 [2024-11-06 19:43:37,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:43:37,813 INFO L432 NwaCegarLoop]: 311 mSDtfsCounter, 850 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 3961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-06 19:43:37,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 326 Invalid, 3961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 3408 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-06 19:43:37,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7516 states. [2024-11-06 19:43:37,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7516 to 7514. [2024-11-06 19:43:37,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7514 states, 7513 states have (on average 1.1812857713296951) internal successors, (8875), 7513 states have internal predecessors, (8875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:38,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7514 states to 7514 states and 8875 transitions. [2024-11-06 19:43:38,028 INFO L78 Accepts]: Start accepts. Automaton has 7514 states and 8875 transitions. Word has length 261 [2024-11-06 19:43:38,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:43:38,029 INFO L471 AbstractCegarLoop]: Abstraction has 7514 states and 8875 transitions. [2024-11-06 19:43:38,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:38,029 INFO L276 IsEmpty]: Start isEmpty. Operand 7514 states and 8875 transitions. [2024-11-06 19:43:38,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-11-06 19:43:38,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:43:38,033 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-06 19:43:38,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 19:43:38,034 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:43:38,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:43:38,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1457848671, now seen corresponding path program 1 times [2024-11-06 19:43:38,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:43:38,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562490253] [2024-11-06 19:43:38,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:43:38,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:43:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:43:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-06 19:43:38,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:43:38,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562490253] [2024-11-06 19:43:38,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562490253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:43:38,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:43:38,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:43:38,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483091609] [2024-11-06 19:43:38,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:43:38,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:43:38,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:43:38,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:43:38,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:43:38,536 INFO L87 Difference]: Start difference. First operand 7514 states and 8875 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:40,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:43:40,661 INFO L93 Difference]: Finished difference Result 16528 states and 20146 transitions. [2024-11-06 19:43:40,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:43:40,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2024-11-06 19:43:40,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:43:40,683 INFO L225 Difference]: With dead ends: 16528 [2024-11-06 19:43:40,683 INFO L226 Difference]: Without dead ends: 9767 [2024-11-06 19:43:40,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:43:40,689 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 826 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 989 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 3018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 989 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-06 19:43:40,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 139 Invalid, 3018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [989 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-06 19:43:40,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2024-11-06 19:43:40,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2024-11-06 19:43:40,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.207352037681753) internal successors, (11791), 9766 states have internal predecessors, (11791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:40,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 11791 transitions. [2024-11-06 19:43:40,810 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 11791 transitions. Word has length 338 [2024-11-06 19:43:40,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:43:40,810 INFO L471 AbstractCegarLoop]: Abstraction has 9767 states and 11791 transitions. [2024-11-06 19:43:40,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:40,810 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 11791 transitions. [2024-11-06 19:43:40,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2024-11-06 19:43:40,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:43:40,815 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-06 19:43:40,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 19:43:40,815 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:43:40,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:43:40,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1945795235, now seen corresponding path program 1 times [2024-11-06 19:43:40,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:43:40,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023038475] [2024-11-06 19:43:40,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:43:40,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:43:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:43:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-06 19:43:41,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:43:41,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023038475] [2024-11-06 19:43:41,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023038475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:43:41,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:43:41,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:43:41,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097211944] [2024-11-06 19:43:41,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:43:41,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:43:41,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:43:41,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:43:41,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:43:41,330 INFO L87 Difference]: Start difference. First operand 9767 states and 11791 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:43,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:43:43,398 INFO L93 Difference]: Finished difference Result 21034 states and 25744 transitions. [2024-11-06 19:43:43,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:43:43,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 362 [2024-11-06 19:43:43,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:43:43,425 INFO L225 Difference]: With dead ends: 21034 [2024-11-06 19:43:43,425 INFO L226 Difference]: Without dead ends: 12020 [2024-11-06 19:43:43,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:43:43,435 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-06 19:43:43,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 105 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [725 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-06 19:43:43,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12020 states. [2024-11-06 19:43:43,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12020 to 12020. [2024-11-06 19:43:43,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 1.1926116981446044) internal successors, (14334), 12019 states have internal predecessors, (14334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:43,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 14334 transitions. [2024-11-06 19:43:43,549 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 14334 transitions. Word has length 362 [2024-11-06 19:43:43,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:43:43,550 INFO L471 AbstractCegarLoop]: Abstraction has 12020 states and 14334 transitions. [2024-11-06 19:43:43,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:43,551 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 14334 transitions. [2024-11-06 19:43:43,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-11-06 19:43:43,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:43:43,554 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:43:43,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-06 19:43:43,555 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:43:43,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:43:43,555 INFO L85 PathProgramCache]: Analyzing trace with hash 982786, now seen corresponding path program 1 times [2024-11-06 19:43:43,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:43:43,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017112913] [2024-11-06 19:43:43,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:43:43,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:43:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:43:43,873 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-06 19:43:43,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:43:43,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017112913] [2024-11-06 19:43:43,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017112913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:43:43,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:43:43,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:43:43,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394320266] [2024-11-06 19:43:43,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:43:43,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:43:43,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:43:43,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:43:43,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:43:43,876 INFO L87 Difference]: Start difference. First operand 12020 states and 14334 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:46,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:43:46,289 INFO L93 Difference]: Finished difference Result 33801 states and 40725 transitions. [2024-11-06 19:43:46,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:43:46,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 376 [2024-11-06 19:43:46,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:43:46,321 INFO L225 Difference]: With dead ends: 33801 [2024-11-06 19:43:46,321 INFO L226 Difference]: Without dead ends: 22534 [2024-11-06 19:43:46,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:43:46,330 INFO L432 NwaCegarLoop]: 1322 mSDtfsCounter, 635 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2678 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-06 19:43:46,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1330 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2678 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-06 19:43:46,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22534 states. [2024-11-06 19:43:46,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22534 to 21032. [2024-11-06 19:43:46,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21032 states, 21031 states have (on average 1.182825353050259) internal successors, (24876), 21031 states have internal predecessors, (24876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:46,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21032 states to 21032 states and 24876 transitions. [2024-11-06 19:43:46,535 INFO L78 Accepts]: Start accepts. Automaton has 21032 states and 24876 transitions. Word has length 376 [2024-11-06 19:43:46,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:43:46,535 INFO L471 AbstractCegarLoop]: Abstraction has 21032 states and 24876 transitions. [2024-11-06 19:43:46,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:46,535 INFO L276 IsEmpty]: Start isEmpty. Operand 21032 states and 24876 transitions. [2024-11-06 19:43:46,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-11-06 19:43:46,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:43:46,540 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 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] [2024-11-06 19:43:46,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 19:43:46,540 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:43:46,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:43:46,541 INFO L85 PathProgramCache]: Analyzing trace with hash -51249649, now seen corresponding path program 1 times [2024-11-06 19:43:46,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:43:46,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34186711] [2024-11-06 19:43:46,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:43:46,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:43:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:43:46,784 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-06 19:43:46,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:43:46,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34186711] [2024-11-06 19:43:46,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34186711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:43:46,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:43:46,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:43:46,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093651631] [2024-11-06 19:43:46,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:43:46,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:43:46,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:43:46,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:43:46,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:43:46,786 INFO L87 Difference]: Start difference. First operand 21032 states and 24876 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:49,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:43:49,117 INFO L93 Difference]: Finished difference Result 49572 states and 59456 transitions. [2024-11-06 19:43:49,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:43:49,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 377 [2024-11-06 19:43:49,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:43:49,154 INFO L225 Difference]: With dead ends: 49572 [2024-11-06 19:43:49,154 INFO L226 Difference]: Without dead ends: 29293 [2024-11-06 19:43:49,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:43:49,211 INFO L432 NwaCegarLoop]: 1311 mSDtfsCounter, 711 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-06 19:43:49,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1319 Invalid, 2977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-06 19:43:49,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29293 states. [2024-11-06 19:43:49,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29293 to 28542. [2024-11-06 19:43:49,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28542 states, 28541 states have (on average 1.1838407904418204) internal successors, (33788), 28541 states have internal predecessors, (33788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:49,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28542 states to 28542 states and 33788 transitions. [2024-11-06 19:43:49,430 INFO L78 Accepts]: Start accepts. Automaton has 28542 states and 33788 transitions. Word has length 377 [2024-11-06 19:43:49,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:43:49,430 INFO L471 AbstractCegarLoop]: Abstraction has 28542 states and 33788 transitions. [2024-11-06 19:43:49,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:49,430 INFO L276 IsEmpty]: Start isEmpty. Operand 28542 states and 33788 transitions. [2024-11-06 19:43:49,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-11-06 19:43:49,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:43:49,435 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:43:49,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-06 19:43:49,436 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:43:49,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:43:49,437 INFO L85 PathProgramCache]: Analyzing trace with hash 108402636, now seen corresponding path program 1 times [2024-11-06 19:43:49,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:43:49,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314615989] [2024-11-06 19:43:49,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:43:49,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:43:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:43:49,649 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-06 19:43:49,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:43:49,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314615989] [2024-11-06 19:43:49,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314615989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:43:49,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:43:49,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:43:49,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117042953] [2024-11-06 19:43:49,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:43:49,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:43:49,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:43:49,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:43:49,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:43:49,652 INFO L87 Difference]: Start difference. First operand 28542 states and 33788 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:52,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:43:52,058 INFO L93 Difference]: Finished difference Result 81114 states and 96711 transitions. [2024-11-06 19:43:52,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:43:52,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 380 [2024-11-06 19:43:52,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:43:52,110 INFO L225 Difference]: With dead ends: 81114 [2024-11-06 19:43:52,110 INFO L226 Difference]: Without dead ends: 49570 [2024-11-06 19:43:52,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:43:52,133 INFO L432 NwaCegarLoop]: 1258 mSDtfsCounter, 754 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 2806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-06 19:43:52,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1266 Invalid, 2806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-06 19:43:52,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49570 states. [2024-11-06 19:43:52,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49570 to 48819. [2024-11-06 19:43:52,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48819 states, 48818 states have (on average 1.1366094473349995) internal successors, (55487), 48818 states have internal predecessors, (55487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:52,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48819 states to 48819 states and 55487 transitions. [2024-11-06 19:43:52,591 INFO L78 Accepts]: Start accepts. Automaton has 48819 states and 55487 transitions. Word has length 380 [2024-11-06 19:43:52,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:43:52,592 INFO L471 AbstractCegarLoop]: Abstraction has 48819 states and 55487 transitions. [2024-11-06 19:43:52,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:52,592 INFO L276 IsEmpty]: Start isEmpty. Operand 48819 states and 55487 transitions. [2024-11-06 19:43:52,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2024-11-06 19:43:52,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:43:52,598 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 19:43:52,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-06 19:43:52,598 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:43:52,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:43:52,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1333574750, now seen corresponding path program 1 times [2024-11-06 19:43:52,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:43:52,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378445955] [2024-11-06 19:43:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:43:52,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:43:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:43:52,833 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-06 19:43:52,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:43:52,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378445955] [2024-11-06 19:43:52,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378445955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:43:52,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:43:52,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:43:52,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123997716] [2024-11-06 19:43:52,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:43:52,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:43:52,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:43:52,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:43:52,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:43:52,835 INFO L87 Difference]: Start difference. First operand 48819 states and 55487 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:55,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:43:55,168 INFO L93 Difference]: Finished difference Result 96885 states and 110216 transitions. [2024-11-06 19:43:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:43:55,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 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 443 [2024-11-06 19:43:55,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:43:55,216 INFO L225 Difference]: With dead ends: 96885 [2024-11-06 19:43:55,216 INFO L226 Difference]: Without dead ends: 48819 [2024-11-06 19:43:55,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:43:55,232 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 684 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2425 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 2425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-06 19:43:55,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 277 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 2425 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-06 19:43:55,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48819 states. [2024-11-06 19:43:55,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48819 to 48819. [2024-11-06 19:43:55,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48819 states, 48818 states have (on average 1.131877586136261) internal successors, (55256), 48818 states have internal predecessors, (55256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:55,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48819 states to 48819 states and 55256 transitions. [2024-11-06 19:43:55,650 INFO L78 Accepts]: Start accepts. Automaton has 48819 states and 55256 transitions. Word has length 443 [2024-11-06 19:43:55,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:43:55,650 INFO L471 AbstractCegarLoop]: Abstraction has 48819 states and 55256 transitions. [2024-11-06 19:43:55,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:43:55,650 INFO L276 IsEmpty]: Start isEmpty. Operand 48819 states and 55256 transitions. [2024-11-06 19:43:55,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2024-11-06 19:43:55,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:43:55,657 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:43:55,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-06 19:43:55,657 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:43:55,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:43:55,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1371657392, now seen corresponding path program 1 times [2024-11-06 19:43:55,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:43:55,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979586809] [2024-11-06 19:43:55,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:43:55,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:43:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:43:57,119 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 423 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:43:57,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:43:57,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979586809] [2024-11-06 19:43:57,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979586809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 19:43:57,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723925584] [2024-11-06 19:43:57,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:43:57,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:43:57,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:43:57,123 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 19:43:57,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 19:43:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:43:57,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 19:43:57,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 19:43:57,818 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-11-06 19:43:57,818 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 19:43:57,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723925584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:43:57,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 19:43:57,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-06 19:43:57,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638390941] [2024-11-06 19:43:57,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:43:57,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 19:43:57,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:43:57,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 19:43:57,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-06 19:43:57,820 INFO L87 Difference]: Start difference. First operand 48819 states and 55256 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:01,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:44:01,450 INFO L93 Difference]: Finished difference Result 147955 states and 169736 transitions. [2024-11-06 19:44:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 19:44:01,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 484 [2024-11-06 19:44:01,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:44:01,574 INFO L225 Difference]: With dead ends: 147955 [2024-11-06 19:44:01,574 INFO L226 Difference]: Without dead ends: 99889 [2024-11-06 19:44:01,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-06 19:44:01,614 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 1762 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4868 mSolverCounterSat, 600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 5468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 4868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-06 19:44:01,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1762 Valid, 69 Invalid, 5468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 4868 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-06 19:44:01,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99889 states. [2024-11-06 19:44:02,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99889 to 99136. [2024-11-06 19:44:02,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99136 states, 99135 states have (on average 1.143057446915822) internal successors, (113317), 99135 states have internal predecessors, (113317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:02,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99136 states to 99136 states and 113317 transitions. [2024-11-06 19:44:02,597 INFO L78 Accepts]: Start accepts. Automaton has 99136 states and 113317 transitions. Word has length 484 [2024-11-06 19:44:02,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:44:02,597 INFO L471 AbstractCegarLoop]: Abstraction has 99136 states and 113317 transitions. [2024-11-06 19:44:02,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:02,597 INFO L276 IsEmpty]: Start isEmpty. Operand 99136 states and 113317 transitions. [2024-11-06 19:44:02,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2024-11-06 19:44:02,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:44:02,607 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:44:02,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 19:44:02,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-06 19:44:02,807 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:44:02,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:44:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash 105166052, now seen corresponding path program 1 times [2024-11-06 19:44:02,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:44:02,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297229902] [2024-11-06 19:44:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:44:02,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:44:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:44:03,477 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 414 proven. 108 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-06 19:44:03,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:44:03,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297229902] [2024-11-06 19:44:03,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297229902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 19:44:03,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852470448] [2024-11-06 19:44:03,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:44:03,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:44:03,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:44:03,484 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 19:44:03,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 19:44:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:44:03,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 19:44:03,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 19:44:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-11-06 19:44:03,858 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 19:44:03,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852470448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:44:03,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 19:44:03,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-06 19:44:03,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984023461] [2024-11-06 19:44:03,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:44:03,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:44:03,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:44:03,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:44:03,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 19:44:03,862 INFO L87 Difference]: Start difference. First operand 99136 states and 113317 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:06,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:44:06,410 INFO L93 Difference]: Finished difference Result 241077 states and 278927 transitions. [2024-11-06 19:44:06,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:44:06,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 530 [2024-11-06 19:44:06,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:44:06,585 INFO L225 Difference]: With dead ends: 241077 [2024-11-06 19:44:06,585 INFO L226 Difference]: Without dead ends: 142694 [2024-11-06 19:44:06,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 19:44:06,639 INFO L432 NwaCegarLoop]: 489 mSDtfsCounter, 694 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 2824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-06 19:44:06,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 495 Invalid, 2824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-06 19:44:06,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142694 states. [2024-11-06 19:44:07,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142694 to 137437. [2024-11-06 19:44:08,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137437 states, 137436 states have (on average 1.1303806862830699) internal successors, (155355), 137436 states have internal predecessors, (155355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:08,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137437 states to 137437 states and 155355 transitions. [2024-11-06 19:44:08,505 INFO L78 Accepts]: Start accepts. Automaton has 137437 states and 155355 transitions. Word has length 530 [2024-11-06 19:44:08,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:44:08,506 INFO L471 AbstractCegarLoop]: Abstraction has 137437 states and 155355 transitions. [2024-11-06 19:44:08,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:08,506 INFO L276 IsEmpty]: Start isEmpty. Operand 137437 states and 155355 transitions. [2024-11-06 19:44:08,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2024-11-06 19:44:08,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:44:08,521 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:44:08,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-06 19:44:08,722 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 19:44:08,722 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:44:08,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:44:08,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1688461461, now seen corresponding path program 1 times [2024-11-06 19:44:08,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:44:08,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642907751] [2024-11-06 19:44:08,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:44:08,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:44:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:44:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 828 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-06 19:44:09,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:44:09,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642907751] [2024-11-06 19:44:09,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642907751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:44:09,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:44:09,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:44:09,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2533815] [2024-11-06 19:44:09,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:44:09,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:44:09,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:44:09,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:44:09,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:44:09,013 INFO L87 Difference]: Start difference. First operand 137437 states and 155355 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:11,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:44:11,585 INFO L93 Difference]: Finished difference Result 274872 states and 310721 transitions. [2024-11-06 19:44:11,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:44:11,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 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 582 [2024-11-06 19:44:11,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:44:11,741 INFO L225 Difference]: With dead ends: 274872 [2024-11-06 19:44:11,742 INFO L226 Difference]: Without dead ends: 138188 [2024-11-06 19:44:11,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:44:11,788 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 735 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 632 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-06 19:44:11,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 227 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [632 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-06 19:44:11,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138188 states. [2024-11-06 19:44:13,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138188 to 135935. [2024-11-06 19:44:13,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135935 states, 135934 states have (on average 1.1257227772301264) internal successors, (153024), 135934 states have internal predecessors, (153024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135935 states to 135935 states and 153024 transitions. [2024-11-06 19:44:13,332 INFO L78 Accepts]: Start accepts. Automaton has 135935 states and 153024 transitions. Word has length 582 [2024-11-06 19:44:13,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:44:13,332 INFO L471 AbstractCegarLoop]: Abstraction has 135935 states and 153024 transitions. [2024-11-06 19:44:13,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:13,333 INFO L276 IsEmpty]: Start isEmpty. Operand 135935 states and 153024 transitions. [2024-11-06 19:44:13,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2024-11-06 19:44:13,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:44:13,354 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:44:13,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-06 19:44:13,354 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:44:13,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:44:13,354 INFO L85 PathProgramCache]: Analyzing trace with hash 341598571, now seen corresponding path program 1 times [2024-11-06 19:44:13,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:44:13,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005012390] [2024-11-06 19:44:13,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:44:13,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:44:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:44:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1119 backedges. 844 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-11-06 19:44:13,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:44:13,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005012390] [2024-11-06 19:44:13,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005012390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:44:13,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:44:13,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:44:13,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9986095] [2024-11-06 19:44:13,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:44:13,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:44:13,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:44:13,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:44:13,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:44:13,816 INFO L87 Difference]: Start difference. First operand 135935 states and 153024 transitions. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:16,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:44:16,800 INFO L93 Difference]: Finished difference Result 380763 states and 429237 transitions. [2024-11-06 19:44:16,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:44:16,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 593 [2024-11-06 19:44:16,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:44:17,083 INFO L225 Difference]: With dead ends: 380763 [2024-11-06 19:44:17,083 INFO L226 Difference]: Without dead ends: 245581 [2024-11-06 19:44:17,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:44:17,184 INFO L432 NwaCegarLoop]: 510 mSDtfsCounter, 704 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-06 19:44:17,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 517 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 2267 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-06 19:44:17,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245581 states. [2024-11-06 19:44:19,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245581 to 242577. [2024-11-06 19:44:19,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242577 states, 242576 states have (on average 1.1043920255919795) internal successors, (267899), 242576 states have internal predecessors, (267899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:20,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242577 states to 242577 states and 267899 transitions. [2024-11-06 19:44:20,369 INFO L78 Accepts]: Start accepts. Automaton has 242577 states and 267899 transitions. Word has length 593 [2024-11-06 19:44:20,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:44:20,369 INFO L471 AbstractCegarLoop]: Abstraction has 242577 states and 267899 transitions. [2024-11-06 19:44:20,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:20,369 INFO L276 IsEmpty]: Start isEmpty. Operand 242577 states and 267899 transitions. [2024-11-06 19:44:20,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2024-11-06 19:44:20,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:44:20,419 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:44:20,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-06 19:44:20,419 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:44:20,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:44:20,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1130398600, now seen corresponding path program 1 times [2024-11-06 19:44:20,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:44:20,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694514959] [2024-11-06 19:44:20,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:44:20,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:44:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:44:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 748 proven. 0 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2024-11-06 19:44:21,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:44:21,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694514959] [2024-11-06 19:44:21,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694514959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:44:21,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:44:21,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:44:21,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260350491] [2024-11-06 19:44:21,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:44:21,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:44:21,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:44:21,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:44:21,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:44:21,100 INFO L87 Difference]: Start difference. First operand 242577 states and 267899 transitions. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:24,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:44:24,371 INFO L93 Difference]: Finished difference Result 548236 states and 603361 transitions. [2024-11-06 19:44:24,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:44:24,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 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 737 [2024-11-06 19:44:24,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:44:24,783 INFO L225 Difference]: With dead ends: 548236 [2024-11-06 19:44:24,783 INFO L226 Difference]: Without dead ends: 306412 [2024-11-06 19:44:24,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:44:24,897 INFO L432 NwaCegarLoop]: 1342 mSDtfsCounter, 585 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 2607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-06 19:44:24,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 1350 Invalid, 2607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 2304 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-06 19:44:25,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306412 states. [2024-11-06 19:44:28,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306412 to 298151. [2024-11-06 19:44:28,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298151 states, 298150 states have (on average 1.088817709206775) internal successors, (324631), 298150 states have internal predecessors, (324631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:28,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298151 states to 298151 states and 324631 transitions. [2024-11-06 19:44:28,570 INFO L78 Accepts]: Start accepts. Automaton has 298151 states and 324631 transitions. Word has length 737 [2024-11-06 19:44:28,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:44:28,572 INFO L471 AbstractCegarLoop]: Abstraction has 298151 states and 324631 transitions. [2024-11-06 19:44:28,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:28,572 INFO L276 IsEmpty]: Start isEmpty. Operand 298151 states and 324631 transitions. [2024-11-06 19:44:28,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2024-11-06 19:44:28,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:44:28,974 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 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] [2024-11-06 19:44:28,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-06 19:44:28,974 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:44:28,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:44:28,980 INFO L85 PathProgramCache]: Analyzing trace with hash -639411, now seen corresponding path program 1 times [2024-11-06 19:44:28,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:44:28,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774627713] [2024-11-06 19:44:28,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:44:28,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:44:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:44:29,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1687 backedges. 1151 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2024-11-06 19:44:29,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:44:29,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774627713] [2024-11-06 19:44:29,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774627713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:44:29,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:44:29,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:44:29,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112707212] [2024-11-06 19:44:29,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:44:29,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:44:29,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:44:29,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:44:29,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:44:29,353 INFO L87 Difference]: Start difference. First operand 298151 states and 324631 transitions. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:33,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:44:33,654 INFO L93 Difference]: Finished difference Result 673653 states and 737723 transitions. [2024-11-06 19:44:33,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:44:33,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 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 754 [2024-11-06 19:44:33,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:44:34,168 INFO L225 Difference]: With dead ends: 673653 [2024-11-06 19:44:34,168 INFO L226 Difference]: Without dead ends: 376255 [2024-11-06 19:44:34,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:44:34,291 INFO L432 NwaCegarLoop]: 467 mSDtfsCounter, 669 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 2926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-06 19:44:34,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 474 Invalid, 2926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 2235 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-06 19:44:34,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376255 states.