./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label31.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/Problem13_label31.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', '781b4c30281e668acaf3c14c6cf74c491996fd51fc229d130e4fc767358d6ab3'] 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/Problem13_label31.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 781b4c30281e668acaf3c14c6cf74c491996fd51fc229d130e4fc767358d6ab3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 19:49:00,064 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 19:49:00,151 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 19:49:00,162 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 19:49:00,162 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 19:49:00,187 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 19:49:00,188 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 19:49:00,188 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 19:49:00,189 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 19:49:00,189 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 19:49:00,190 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 19:49:00,190 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 19:49:00,190 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 19:49:00,191 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 19:49:00,191 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 19:49:00,192 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 19:49:00,192 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 19:49:00,192 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 19:49:00,192 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 19:49:00,192 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 19:49:00,192 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 19:49:00,192 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 19:49:00,192 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 19:49:00,193 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 19:49:00,193 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 19:49:00,193 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 19:49:00,193 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 19:49:00,193 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 19:49:00,193 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 19:49:00,193 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 19:49:00,193 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 19:49:00,193 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 19:49:00,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 19:49:00,193 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 19:49:00,193 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 19:49:00,193 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 19:49:00,193 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 19:49:00,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 19:49:00,193 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 19:49:00,194 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 19:49:00,194 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 19:49:00,194 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 19:49:00,194 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 -> 781b4c30281e668acaf3c14c6cf74c491996fd51fc229d130e4fc767358d6ab3 [2024-11-06 19:49:00,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 19:49:00,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 19:49:00,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 19:49:00,488 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 19:49:00,488 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 19:49:00,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label31.c [2024-11-06 19:49:01,741 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 19:49:02,225 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 19:49:02,226 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label31.c [2024-11-06 19:49:02,264 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/02478ebd5/ccecbadb71b04ed7b7d4cd59c0bb284f/FLAGac5053384 [2024-11-06 19:49:02,335 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/02478ebd5/ccecbadb71b04ed7b7d4cd59c0bb284f [2024-11-06 19:49:02,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 19:49:02,340 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 19:49:02,342 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 19:49:02,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 19:49:02,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 19:49:02,347 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:49:02" (1/1) ... [2024-11-06 19:49:02,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33cdac7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:49:02, skipping insertion in model container [2024-11-06 19:49:02,348 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:49:02" (1/1) ... [2024-11-06 19:49:02,434 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 19:49:02,646 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/Problem13_label31.c[5792,5805] [2024-11-06 19:49:03,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 19:49:03,309 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 19:49:03,357 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/Problem13_label31.c[5792,5805] [2024-11-06 19:49:03,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 19:49:03,803 INFO L204 MainTranslator]: Completed translation [2024-11-06 19:49:03,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:49:03 WrapperNode [2024-11-06 19:49:03,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 19:49:03,806 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 19:49:03,806 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 19:49:03,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 19:49:03,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:49:03" (1/1) ... [2024-11-06 19:49:03,878 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:49:03" (1/1) ... [2024-11-06 19:49:04,533 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-11-06 19:49:04,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 19:49:04,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 19:49:04,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 19:49:04,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 19:49:04,554 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:49:03" (1/1) ... [2024-11-06 19:49:04,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:49:03" (1/1) ... [2024-11-06 19:49:04,651 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:49:03" (1/1) ... [2024-11-06 19:49:04,908 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 19:49:04,909 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:49:03" (1/1) ... [2024-11-06 19:49:04,909 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:49:03" (1/1) ... [2024-11-06 19:49:05,044 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:49:03" (1/1) ... [2024-11-06 19:49:05,084 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:49:03" (1/1) ... [2024-11-06 19:49:05,140 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:49:03" (1/1) ... [2024-11-06 19:49:05,168 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:49:03" (1/1) ... [2024-11-06 19:49:05,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 19:49:05,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 19:49:05,285 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 19:49:05,285 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 19:49:05,286 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:49:03" (1/1) ... [2024-11-06 19:49:05,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 19:49:05,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:49:05,335 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 19:49:05,349 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 19:49:05,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 19:49:05,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 19:49:05,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 19:49:05,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 19:49:05,503 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 19:49:05,505 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 19:49:11,613 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-06 19:49:11,613 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 19:49:11,657 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 19:49:11,659 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 19:49:11,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:49:11 BoogieIcfgContainer [2024-11-06 19:49:11,659 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 19:49:11,662 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 19:49:11,662 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 19:49:11,667 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 19:49:11,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:49:02" (1/3) ... [2024-11-06 19:49:11,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4ba583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:49:11, skipping insertion in model container [2024-11-06 19:49:11,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:49:03" (2/3) ... [2024-11-06 19:49:11,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4ba583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:49:11, skipping insertion in model container [2024-11-06 19:49:11,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:49:11" (3/3) ... [2024-11-06 19:49:11,670 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label31.c [2024-11-06 19:49:11,683 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 19:49:11,684 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 19:49:11,770 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 19:49:11,781 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;@7ef90632, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 19:49:11,782 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 19:49:11,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:11,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-06 19:49:11,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:11,799 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] [2024-11-06 19:49:11,800 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:11,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:11,804 INFO L85 PathProgramCache]: Analyzing trace with hash 2102454322, now seen corresponding path program 1 times [2024-11-06 19:49:11,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:11,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987688322] [2024-11-06 19:49:11,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:11,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:12,173 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 19:49:12,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:12,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987688322] [2024-11-06 19:49:12,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987688322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:12,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:49:12,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:49:12,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905298419] [2024-11-06 19:49:12,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:12,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:12,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:12,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:12,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:12,203 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:15,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:15,904 INFO L93 Difference]: Finished difference Result 3035 states and 5643 transitions. [2024-11-06 19:49:15,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:15,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-11-06 19:49:15,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:15,931 INFO L225 Difference]: With dead ends: 3035 [2024-11-06 19:49:15,932 INFO L226 Difference]: Without dead ends: 1873 [2024-11-06 19:49:15,942 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 19:49:15,947 INFO L432 NwaCegarLoop]: 991 mSDtfsCounter, 865 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:15,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1145 Invalid, 3363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-06 19:49:15,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2024-11-06 19:49:16,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1859. [2024-11-06 19:49:16,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1858 states have (on average 1.5441334768568353) internal successors, (2869), 1858 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:16,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2869 transitions. [2024-11-06 19:49:16,075 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2869 transitions. Word has length 40 [2024-11-06 19:49:16,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:16,076 INFO L471 AbstractCegarLoop]: Abstraction has 1859 states and 2869 transitions. [2024-11-06 19:49:16,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:16,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2869 transitions. [2024-11-06 19:49:16,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-06 19:49:16,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:16,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:16,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 19:49:16,080 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:16,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:16,081 INFO L85 PathProgramCache]: Analyzing trace with hash -329948995, now seen corresponding path program 1 times [2024-11-06 19:49:16,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:16,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005571582] [2024-11-06 19:49:16,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:16,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:49:16,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:16,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005571582] [2024-11-06 19:49:16,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005571582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:16,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:49:16,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:49:16,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209346046] [2024-11-06 19:49:16,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:16,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:16,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:16,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:16,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:16,409 INFO L87 Difference]: Start difference. First operand 1859 states and 2869 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:20,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:20,216 INFO L93 Difference]: Finished difference Result 5317 states and 8229 transitions. [2024-11-06 19:49:20,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:20,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2024-11-06 19:49:20,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:20,230 INFO L225 Difference]: With dead ends: 5317 [2024-11-06 19:49:20,231 INFO L226 Difference]: Without dead ends: 3460 [2024-11-06 19:49:20,233 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 19:49:20,234 INFO L432 NwaCegarLoop]: 1039 mSDtfsCounter, 826 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:20,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1192 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-06 19:49:20,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2024-11-06 19:49:20,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3459. [2024-11-06 19:49:20,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3459 states, 3458 states have (on average 1.3805668016194332) internal successors, (4774), 3458 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:20,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 4774 transitions. [2024-11-06 19:49:20,300 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 4774 transitions. Word has length 112 [2024-11-06 19:49:20,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:20,301 INFO L471 AbstractCegarLoop]: Abstraction has 3459 states and 4774 transitions. [2024-11-06 19:49:20,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:20,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 4774 transitions. [2024-11-06 19:49:20,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-06 19:49:20,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:20,307 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:20,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 19:49:20,307 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:20,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:20,308 INFO L85 PathProgramCache]: Analyzing trace with hash -933684044, now seen corresponding path program 1 times [2024-11-06 19:49:20,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:20,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809865511] [2024-11-06 19:49:20,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:20,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:20,824 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:49:20,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:20,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809865511] [2024-11-06 19:49:20,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809865511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:20,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:49:20,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:49:20,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533119388] [2024-11-06 19:49:20,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:20,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 19:49:20,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:20,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 19:49:20,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:49:20,829 INFO L87 Difference]: Start difference. First operand 3459 states and 4774 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:24,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:24,997 INFO L93 Difference]: Finished difference Result 10870 states and 14768 transitions. [2024-11-06 19:49:24,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 19:49:24,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-11-06 19:49:24,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:25,024 INFO L225 Difference]: With dead ends: 10870 [2024-11-06 19:49:25,026 INFO L226 Difference]: Without dead ends: 7413 [2024-11-06 19:49:25,031 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 19:49:25,032 INFO L432 NwaCegarLoop]: 708 mSDtfsCounter, 2584 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 4117 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2584 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 4948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 4117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:25,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2584 Valid, 1001 Invalid, 4948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 4117 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-06 19:49:25,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7413 states. [2024-11-06 19:49:25,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7413 to 7412. [2024-11-06 19:49:25,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7412 states, 7411 states have (on average 1.2701389825934422) internal successors, (9413), 7411 states have internal predecessors, (9413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:25,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7412 states to 7412 states and 9413 transitions. [2024-11-06 19:49:25,151 INFO L78 Accepts]: Start accepts. Automaton has 7412 states and 9413 transitions. Word has length 126 [2024-11-06 19:49:25,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:25,151 INFO L471 AbstractCegarLoop]: Abstraction has 7412 states and 9413 transitions. [2024-11-06 19:49:25,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:25,152 INFO L276 IsEmpty]: Start isEmpty. Operand 7412 states and 9413 transitions. [2024-11-06 19:49:25,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-06 19:49:25,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:25,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:25,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 19:49:25,156 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:25,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:25,156 INFO L85 PathProgramCache]: Analyzing trace with hash -435026765, now seen corresponding path program 1 times [2024-11-06 19:49:25,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:25,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879112344] [2024-11-06 19:49:25,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:25,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:49:25,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:25,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879112344] [2024-11-06 19:49:25,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879112344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:25,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:49:25,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:49:25,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754691858] [2024-11-06 19:49:25,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:25,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:25,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:25,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:25,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:25,388 INFO L87 Difference]: Start difference. First operand 7412 states and 9413 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:28,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:28,386 INFO L93 Difference]: Finished difference Result 17195 states and 22713 transitions. [2024-11-06 19:49:28,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:28,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2024-11-06 19:49:28,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:28,414 INFO L225 Difference]: With dead ends: 17195 [2024-11-06 19:49:28,414 INFO L226 Difference]: Without dead ends: 10572 [2024-11-06 19:49:28,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:28,423 INFO L432 NwaCegarLoop]: 787 mSDtfsCounter, 928 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 925 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 925 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:28,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 904 Invalid, 3299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [925 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-06 19:49:28,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10572 states. [2024-11-06 19:49:28,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10572 to 10564. [2024-11-06 19:49:28,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10564 states, 10563 states have (on average 1.253905140585061) internal successors, (13245), 10563 states have internal predecessors, (13245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10564 states to 10564 states and 13245 transitions. [2024-11-06 19:49:28,586 INFO L78 Accepts]: Start accepts. Automaton has 10564 states and 13245 transitions. Word has length 136 [2024-11-06 19:49:28,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:28,587 INFO L471 AbstractCegarLoop]: Abstraction has 10564 states and 13245 transitions. [2024-11-06 19:49:28,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:28,588 INFO L276 IsEmpty]: Start isEmpty. Operand 10564 states and 13245 transitions. [2024-11-06 19:49:28,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-06 19:49:28,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:28,593 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 19:49:28,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 19:49:28,594 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:28,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:28,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1382232573, now seen corresponding path program 1 times [2024-11-06 19:49:28,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:28,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647155360] [2024-11-06 19:49:28,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:28,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-06 19:49:28,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:28,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647155360] [2024-11-06 19:49:28,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647155360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:28,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:49:28,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:49:28,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879617286] [2024-11-06 19:49:28,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:28,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:28,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:28,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:28,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:28,813 INFO L87 Difference]: Start difference. First operand 10564 states and 13245 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:31,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:31,802 INFO L93 Difference]: Finished difference Result 23508 states and 30389 transitions. [2024-11-06 19:49:31,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:31,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 225 [2024-11-06 19:49:31,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:31,835 INFO L225 Difference]: With dead ends: 23508 [2024-11-06 19:49:31,836 INFO L226 Difference]: Without dead ends: 13733 [2024-11-06 19:49:31,844 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 19:49:31,844 INFO L432 NwaCegarLoop]: 776 mSDtfsCounter, 984 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 983 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 3385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 983 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:31,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 862 Invalid, 3385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [983 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-06 19:49:31,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13733 states. [2024-11-06 19:49:32,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13733 to 13723. [2024-11-06 19:49:32,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13723 states, 13722 states have (on average 1.2664334645095467) internal successors, (17378), 13722 states have internal predecessors, (17378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:32,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13723 states to 13723 states and 17378 transitions. [2024-11-06 19:49:32,056 INFO L78 Accepts]: Start accepts. Automaton has 13723 states and 17378 transitions. Word has length 225 [2024-11-06 19:49:32,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:32,057 INFO L471 AbstractCegarLoop]: Abstraction has 13723 states and 17378 transitions. [2024-11-06 19:49:32,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:32,058 INFO L276 IsEmpty]: Start isEmpty. Operand 13723 states and 17378 transitions. [2024-11-06 19:49:32,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-06 19:49:32,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:32,063 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:49:32,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 19:49:32,064 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:32,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:32,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1674288238, now seen corresponding path program 1 times [2024-11-06 19:49:32,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:32,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710625132] [2024-11-06 19:49:32,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:32,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:32,579 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-06 19:49:32,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:32,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710625132] [2024-11-06 19:49:32,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710625132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:32,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:49:32,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:49:32,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196721013] [2024-11-06 19:49:32,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:32,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:32,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:32,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:32,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:32,582 INFO L87 Difference]: Start difference. First operand 13723 states and 17378 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:35,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:35,581 INFO L93 Difference]: Finished difference Result 29809 states and 38633 transitions. [2024-11-06 19:49:35,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:35,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2024-11-06 19:49:35,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:35,617 INFO L225 Difference]: With dead ends: 29809 [2024-11-06 19:49:35,618 INFO L226 Difference]: Without dead ends: 16875 [2024-11-06 19:49:35,630 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 19:49:35,632 INFO L432 NwaCegarLoop]: 1718 mSDtfsCounter, 847 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 730 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:35,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1869 Invalid, 3223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [730 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-06 19:49:35,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16875 states. [2024-11-06 19:49:35,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16875 to 16871. [2024-11-06 19:49:35,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16871 states, 16870 states have (on average 1.2406046235921755) internal successors, (20929), 16870 states have internal predecessors, (20929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:35,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16871 states to 16871 states and 20929 transitions. [2024-11-06 19:49:35,812 INFO L78 Accepts]: Start accepts. Automaton has 16871 states and 20929 transitions. Word has length 256 [2024-11-06 19:49:35,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:35,816 INFO L471 AbstractCegarLoop]: Abstraction has 16871 states and 20929 transitions. [2024-11-06 19:49:35,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:35,816 INFO L276 IsEmpty]: Start isEmpty. Operand 16871 states and 20929 transitions. [2024-11-06 19:49:35,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-11-06 19:49:35,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:35,824 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:35,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-06 19:49:35,825 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:35,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:35,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2075264397, now seen corresponding path program 1 times [2024-11-06 19:49:35,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:35,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099231474] [2024-11-06 19:49:35,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:35,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:36,059 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-06 19:49:36,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:36,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099231474] [2024-11-06 19:49:36,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099231474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:36,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:49:36,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:49:36,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739588009] [2024-11-06 19:49:36,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:36,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:36,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:36,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:36,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:36,062 INFO L87 Difference]: Start difference. First operand 16871 states and 20929 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:39,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:39,038 INFO L93 Difference]: Finished difference Result 32939 states and 41051 transitions. [2024-11-06 19:49:39,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:39,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 334 [2024-11-06 19:49:39,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:39,075 INFO L225 Difference]: With dead ends: 32939 [2024-11-06 19:49:39,075 INFO L226 Difference]: Without dead ends: 16857 [2024-11-06 19:49:39,145 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 19:49:39,146 INFO L432 NwaCegarLoop]: 1517 mSDtfsCounter, 1029 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 2952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:39,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 1655 Invalid, 2952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-06 19:49:39,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16857 states. [2024-11-06 19:49:39,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16857 to 16856. [2024-11-06 19:49:39,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16856 states, 16855 states have (on average 1.1646395728270542) internal successors, (19630), 16855 states have internal predecessors, (19630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:39,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16856 states to 16856 states and 19630 transitions. [2024-11-06 19:49:39,580 INFO L78 Accepts]: Start accepts. Automaton has 16856 states and 19630 transitions. Word has length 334 [2024-11-06 19:49:39,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:39,581 INFO L471 AbstractCegarLoop]: Abstraction has 16856 states and 19630 transitions. [2024-11-06 19:49:39,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:39,581 INFO L276 IsEmpty]: Start isEmpty. Operand 16856 states and 19630 transitions. [2024-11-06 19:49:39,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-11-06 19:49:39,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:39,601 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:49:39,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 19:49:39,601 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:39,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:39,606 INFO L85 PathProgramCache]: Analyzing trace with hash 540762963, now seen corresponding path program 1 times [2024-11-06 19:49:39,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:39,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932433523] [2024-11-06 19:49:39,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:39,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-06 19:49:39,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:39,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932433523] [2024-11-06 19:49:39,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932433523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:39,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:49:39,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:49:39,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014572457] [2024-11-06 19:49:39,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:39,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:39,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:39,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:39,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:39,968 INFO L87 Difference]: Start difference. First operand 16856 states and 19630 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:43,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:43,139 INFO L93 Difference]: Finished difference Result 48682 states and 56919 transitions. [2024-11-06 19:49:43,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:43,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 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 19:49:43,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:43,181 INFO L225 Difference]: With dead ends: 48682 [2024-11-06 19:49:43,181 INFO L226 Difference]: Without dead ends: 32615 [2024-11-06 19:49:43,198 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 19:49:43,198 INFO L432 NwaCegarLoop]: 847 mSDtfsCounter, 769 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:43,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 973 Invalid, 3293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-06 19:49:43,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32615 states. [2024-11-06 19:49:43,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32615 to 29455. [2024-11-06 19:49:43,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29455 states, 29454 states have (on average 1.1309160046173694) internal successors, (33310), 29454 states have internal predecessors, (33310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:43,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29455 states to 29455 states and 33310 transitions. [2024-11-06 19:49:43,594 INFO L78 Accepts]: Start accepts. Automaton has 29455 states and 33310 transitions. Word has length 338 [2024-11-06 19:49:43,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:43,595 INFO L471 AbstractCegarLoop]: Abstraction has 29455 states and 33310 transitions. [2024-11-06 19:49:43,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:43,596 INFO L276 IsEmpty]: Start isEmpty. Operand 29455 states and 33310 transitions. [2024-11-06 19:49:43,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-11-06 19:49:43,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:43,603 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:43,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-06 19:49:43,603 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:43,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:43,603 INFO L85 PathProgramCache]: Analyzing trace with hash -433487939, now seen corresponding path program 1 times [2024-11-06 19:49:43,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:43,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90258951] [2024-11-06 19:49:43,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:43,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:43,866 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-06 19:49:43,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:43,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90258951] [2024-11-06 19:49:43,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90258951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:43,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:49:43,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:49:43,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79553241] [2024-11-06 19:49:43,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:43,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:43,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:43,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:43,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:43,870 INFO L87 Difference]: Start difference. First operand 29455 states and 33310 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:46,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:46,968 INFO L93 Difference]: Finished difference Result 65982 states and 75188 transitions. [2024-11-06 19:49:46,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:46,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 356 [2024-11-06 19:49:46,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:47,098 INFO L225 Difference]: With dead ends: 65982 [2024-11-06 19:49:47,099 INFO L226 Difference]: Without dead ends: 37316 [2024-11-06 19:49:47,118 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 19:49:47,118 INFO L432 NwaCegarLoop]: 1439 mSDtfsCounter, 1113 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 3101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 708 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:47,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 1524 Invalid, 3101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [708 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-06 19:49:47,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37316 states. [2024-11-06 19:49:47,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37316 to 37315. [2024-11-06 19:49:47,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37315 states, 37314 states have (on average 1.109422736774401) internal successors, (41397), 37314 states have internal predecessors, (41397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:47,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37315 states to 37315 states and 41397 transitions. [2024-11-06 19:49:47,452 INFO L78 Accepts]: Start accepts. Automaton has 37315 states and 41397 transitions. Word has length 356 [2024-11-06 19:49:47,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:47,453 INFO L471 AbstractCegarLoop]: Abstraction has 37315 states and 41397 transitions. [2024-11-06 19:49:47,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:47,453 INFO L276 IsEmpty]: Start isEmpty. Operand 37315 states and 41397 transitions. [2024-11-06 19:49:47,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2024-11-06 19:49:47,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:47,466 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:49:47,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-06 19:49:47,466 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:47,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:47,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1409706652, now seen corresponding path program 1 times [2024-11-06 19:49:47,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:47,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063158147] [2024-11-06 19:49:47,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:47,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 431 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-06 19:49:48,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:48,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063158147] [2024-11-06 19:49:48,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063158147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:48,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:49:48,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:49:48,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571878901] [2024-11-06 19:49:48,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:48,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 19:49:48,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:48,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 19:49:48,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:49:48,206 INFO L87 Difference]: Start difference. First operand 37315 states and 41397 transitions. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:52,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:52,731 INFO L93 Difference]: Finished difference Result 100633 states and 111290 transitions. [2024-11-06 19:49:52,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 19:49:52,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 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 478 [2024-11-06 19:49:52,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:52,800 INFO L225 Difference]: With dead ends: 100633 [2024-11-06 19:49:52,800 INFO L226 Difference]: Without dead ends: 64107 [2024-11-06 19:49:52,834 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 19:49:52,834 INFO L432 NwaCegarLoop]: 603 mSDtfsCounter, 2188 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4131 mSolverCounterSat, 649 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2188 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 4780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 649 IncrementalHoareTripleChecker+Valid, 4131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:52,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2188 Valid, 793 Invalid, 4780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [649 Valid, 4131 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-06 19:49:52,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64107 states. [2024-11-06 19:49:53,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64107 to 64095. [2024-11-06 19:49:53,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64095 states, 64094 states have (on average 1.0953755421724343) internal successors, (70207), 64094 states have internal predecessors, (70207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:53,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64095 states to 64095 states and 70207 transitions. [2024-11-06 19:49:53,449 INFO L78 Accepts]: Start accepts. Automaton has 64095 states and 70207 transitions. Word has length 478 [2024-11-06 19:49:53,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:53,450 INFO L471 AbstractCegarLoop]: Abstraction has 64095 states and 70207 transitions. [2024-11-06 19:49:53,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:53,450 INFO L276 IsEmpty]: Start isEmpty. Operand 64095 states and 70207 transitions. [2024-11-06 19:49:53,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2024-11-06 19:49:53,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:53,463 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:49:53,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-06 19:49:53,463 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:53,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:53,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1079479931, now seen corresponding path program 1 times [2024-11-06 19:49:53,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:53,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474847810] [2024-11-06 19:49:53,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:53,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:54,089 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-06 19:49:54,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:54,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474847810] [2024-11-06 19:49:54,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474847810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:54,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:49:54,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:49:54,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043898913] [2024-11-06 19:49:54,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:54,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:54,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:54,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:54,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:54,091 INFO L87 Difference]: Start difference. First operand 64095 states and 70207 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:57,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:57,072 INFO L93 Difference]: Finished difference Result 128191 states and 140419 transitions. [2024-11-06 19:49:57,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:57,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 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 500 [2024-11-06 19:49:57,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:57,126 INFO L225 Difference]: With dead ends: 128191 [2024-11-06 19:49:57,126 INFO L226 Difference]: Without dead ends: 64885 [2024-11-06 19:49:57,145 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 19:49:57,146 INFO L432 NwaCegarLoop]: 1411 mSDtfsCounter, 834 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2489 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 3073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:57,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 1495 Invalid, 3073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 2489 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-06 19:49:57,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64885 states. [2024-11-06 19:49:57,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64885 to 64086. [2024-11-06 19:49:57,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64086 states, 64085 states have (on average 1.0721073574159319) internal successors, (68706), 64085 states have internal predecessors, (68706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:57,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64086 states to 64086 states and 68706 transitions. [2024-11-06 19:49:57,618 INFO L78 Accepts]: Start accepts. Automaton has 64086 states and 68706 transitions. Word has length 500 [2024-11-06 19:49:57,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:57,618 INFO L471 AbstractCegarLoop]: Abstraction has 64086 states and 68706 transitions. [2024-11-06 19:49:57,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:57,619 INFO L276 IsEmpty]: Start isEmpty. Operand 64086 states and 68706 transitions. [2024-11-06 19:49:57,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-11-06 19:49:57,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:57,629 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:57,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-06 19:49:57,629 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:57,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:57,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1541543819, now seen corresponding path program 1 times [2024-11-06 19:49:57,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:57,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385192507] [2024-11-06 19:49:57,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:57,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:59,670 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 482 proven. 113 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-06 19:49:59,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:59,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385192507] [2024-11-06 19:49:59,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385192507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 19:49:59,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393081693] [2024-11-06 19:49:59,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:59,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:49:59,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:49:59,674 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 19:49:59,677 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 19:49:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:59,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 19:49:59,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 19:50:00,181 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-11-06 19:50:00,181 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 19:50:00,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393081693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:50:00,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 19:50:00,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-06 19:50:00,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906140223] [2024-11-06 19:50:00,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:50:00,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:50:00,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:50:00,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:50:00,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-06 19:50:00,184 INFO L87 Difference]: Start difference. First operand 64086 states and 68706 transitions. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:50:02,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:50:02,821 INFO L93 Difference]: Finished difference Result 118714 states and 127641 transitions. [2024-11-06 19:50:02,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:50:02,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 538 [2024-11-06 19:50:02,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:50:03,025 INFO L225 Difference]: With dead ends: 118714 [2024-11-06 19:50:03,025 INFO L226 Difference]: Without dead ends: 64080 [2024-11-06 19:50:03,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-06 19:50:03,052 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 924 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 3007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-06 19:50:03,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 474 Invalid, 3007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-06 19:50:03,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64080 states. [2024-11-06 19:50:03,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64080 to 63286. [2024-11-06 19:50:03,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63286 states, 63285 states have (on average 1.0671249111163783) internal successors, (67533), 63285 states have internal predecessors, (67533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:50:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63286 states to 63286 states and 67533 transitions. [2024-11-06 19:50:03,547 INFO L78 Accepts]: Start accepts. Automaton has 63286 states and 67533 transitions. Word has length 538 [2024-11-06 19:50:03,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:50:03,548 INFO L471 AbstractCegarLoop]: Abstraction has 63286 states and 67533 transitions. [2024-11-06 19:50:03,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:50:03,548 INFO L276 IsEmpty]: Start isEmpty. Operand 63286 states and 67533 transitions. [2024-11-06 19:50:03,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2024-11-06 19:50:03,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:50:03,562 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:50:03,575 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 19:50:03,763 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,SelfDestructingSolverStorable11 [2024-11-06 19:50:03,763 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:50:03,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:50:03,763 INFO L85 PathProgramCache]: Analyzing trace with hash 593564134, now seen corresponding path program 1 times [2024-11-06 19:50:03,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:50:03,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023023257] [2024-11-06 19:50:03,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:50:03,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:50:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:50:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 403 proven. 110 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-06 19:50:04,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:50:04,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023023257] [2024-11-06 19:50:04,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023023257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 19:50:04,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915955252] [2024-11-06 19:50:04,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:50:04,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:50:04,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:50:04,970 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 19:50:04,972 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 19:50:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:50:05,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 19:50:05,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 19:50:05,236 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2024-11-06 19:50:05,236 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 19:50:05,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915955252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:50:05,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 19:50:05,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-06 19:50:05,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597305305] [2024-11-06 19:50:05,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:50:05,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:50:05,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:50:05,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:50:05,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-06 19:50:05,239 INFO L87 Difference]: Start difference. First operand 63286 states and 67533 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:50:08,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:50:08,429 INFO L93 Difference]: Finished difference Result 143091 states and 152955 transitions. [2024-11-06 19:50:08,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:50:08,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 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 601 [2024-11-06 19:50:08,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:50:08,518 INFO L225 Difference]: With dead ends: 143091 [2024-11-06 19:50:08,518 INFO L226 Difference]: Without dead ends: 89257 [2024-11-06 19:50:08,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-06 19:50:08,543 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 977 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2609 mSolverCounterSat, 689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 689 IncrementalHoareTripleChecker+Valid, 2609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-06 19:50:08,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 514 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [689 Valid, 2609 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-06 19:50:08,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89257 states. [2024-11-06 19:50:09,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89257 to 78237. [2024-11-06 19:50:09,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78237 states, 78236 states have (on average 1.0646888900250524) internal successors, (83297), 78236 states have internal predecessors, (83297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:50:09,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78237 states to 78237 states and 83297 transitions. [2024-11-06 19:50:09,239 INFO L78 Accepts]: Start accepts. Automaton has 78237 states and 83297 transitions. Word has length 601 [2024-11-06 19:50:09,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:50:09,240 INFO L471 AbstractCegarLoop]: Abstraction has 78237 states and 83297 transitions. [2024-11-06 19:50:09,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:50:09,240 INFO L276 IsEmpty]: Start isEmpty. Operand 78237 states and 83297 transitions. [2024-11-06 19:50:09,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2024-11-06 19:50:09,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:50:09,279 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:50:09,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 19:50:09,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:50:09,479 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:50:09,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:50:09,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1203332688, now seen corresponding path program 1 times [2024-11-06 19:50:09,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:50:09,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163891758] [2024-11-06 19:50:09,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:50:09,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:50:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:50:10,058 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 533 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-06 19:50:10,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:50:10,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163891758] [2024-11-06 19:50:10,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163891758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:50:10,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:50:10,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:50:10,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902290353] [2024-11-06 19:50:10,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:50:10,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 19:50:10,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:50:10,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 19:50:10,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:50:10,063 INFO L87 Difference]: Start difference. First operand 78237 states and 83297 transitions. Second operand has 4 states, 4 states have (on average 220.5) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:50:15,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:50:15,992 INFO L93 Difference]: Finished difference Result 240066 states and 255357 transitions. [2024-11-06 19:50:15,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 19:50:15,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 220.5) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 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 1002 [2024-11-06 19:50:15,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:50:16,171 INFO L225 Difference]: With dead ends: 240066 [2024-11-06 19:50:16,171 INFO L226 Difference]: Without dead ends: 162618 [2024-11-06 19:50:16,220 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 19:50:16,221 INFO L432 NwaCegarLoop]: 612 mSDtfsCounter, 1663 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 6462 mSolverCounterSat, 899 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 7361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 899 IncrementalHoareTripleChecker+Valid, 6462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-06 19:50:16,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 833 Invalid, 7361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [899 Valid, 6462 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-06 19:50:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162618 states. [2024-11-06 19:50:17,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162618 to 160147. [2024-11-06 19:50:17,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160147 states, 160146 states have (on average 1.0583717357910907) internal successors, (169494), 160146 states have internal predecessors, (169494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:50:17,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160147 states to 160147 states and 169494 transitions. [2024-11-06 19:50:17,770 INFO L78 Accepts]: Start accepts. Automaton has 160147 states and 169494 transitions. Word has length 1002 [2024-11-06 19:50:17,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:50:17,771 INFO L471 AbstractCegarLoop]: Abstraction has 160147 states and 169494 transitions. [2024-11-06 19:50:17,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.5) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:50:17,771 INFO L276 IsEmpty]: Start isEmpty. Operand 160147 states and 169494 transitions.