./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/eca-rers2012/Problem12_label01.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', '65de5b720550425739629c673edc29b7a854e52f56e69a2e107d2cca3ffb2713'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label01.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 65de5b720550425739629c673edc29b7a854e52f56e69a2e107d2cca3ffb2713 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 19:40:12,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 19:40:12,931 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 19:40:12,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 19:40:12,937 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 19:40:12,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 19:40:12,968 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 19:40:12,969 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 19:40:12,969 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 19:40:12,969 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 19:40:12,969 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 19:40:12,969 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 19:40:12,969 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 19:40:12,969 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 19:40:12,969 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 19:40:12,970 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 19:40:12,970 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 19:40:12,970 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 19:40:12,970 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 19:40:12,970 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 19:40:12,970 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 19:40:12,970 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 19:40:12,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 19:40:12,970 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 19:40:12,970 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 19:40:12,970 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 19:40:12,970 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 19:40:12,970 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 19:40:12,970 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 19:40:12,971 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 19:40:12,971 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 19:40:12,971 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 19:40:12,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 19:40:12,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 19:40:12,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 19:40:12,971 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 19:40:12,972 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 19:40:12,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 19:40:12,972 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 19:40:12,973 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 19:40:12,973 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 19:40:12,973 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 19:40:12,973 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 -> 65de5b720550425739629c673edc29b7a854e52f56e69a2e107d2cca3ffb2713 [2024-11-06 19:40:13,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 19:40:13,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 19:40:13,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 19:40:13,224 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 19:40:13,224 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 19:40:13,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label01.c [2024-11-06 19:40:14,538 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 19:40:15,118 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 19:40:15,120 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label01.c [2024-11-06 19:40:15,157 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/077100c3a/b3709956dfa84a52a384ab540eccc4ad/FLAG8f217d031 [2024-11-06 19:40:15,180 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/077100c3a/b3709956dfa84a52a384ab540eccc4ad [2024-11-06 19:40:15,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 19:40:15,184 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 19:40:15,185 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 19:40:15,185 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 19:40:15,190 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 19:40:15,191 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:40:15" (1/1) ... [2024-11-06 19:40:15,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8c8dc75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:15, skipping insertion in model container [2024-11-06 19:40:15,192 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:40:15" (1/1) ... [2024-11-06 19:40:15,284 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 19:40:15,489 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label01.c[5916,5929] [2024-11-06 19:40:16,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 19:40:16,034 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 19:40:16,054 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label01.c[5916,5929] [2024-11-06 19:40:16,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 19:40:16,432 INFO L204 MainTranslator]: Completed translation [2024-11-06 19:40:16,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:16 WrapperNode [2024-11-06 19:40:16,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 19:40:16,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 19:40:16,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 19:40:16,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 19:40:16,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:16" (1/1) ... [2024-11-06 19:40:16,508 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:16" (1/1) ... [2024-11-06 19:40:16,845 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-11-06 19:40:16,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 19:40:16,846 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 19:40:16,846 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 19:40:16,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 19:40:16,874 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:16" (1/1) ... [2024-11-06 19:40:16,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:16" (1/1) ... [2024-11-06 19:40:16,949 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:16" (1/1) ... [2024-11-06 19:40:17,165 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 19:40:17,165 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:16" (1/1) ... [2024-11-06 19:40:17,166 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:16" (1/1) ... [2024-11-06 19:40:17,297 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:16" (1/1) ... [2024-11-06 19:40:17,334 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:16" (1/1) ... [2024-11-06 19:40:17,390 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:16" (1/1) ... [2024-11-06 19:40:17,411 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:16" (1/1) ... [2024-11-06 19:40:17,474 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 19:40:17,476 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 19:40:17,476 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 19:40:17,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 19:40:17,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:16" (1/1) ... [2024-11-06 19:40:17,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 19:40:17,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:40:17,510 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 19:40:17,517 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 19:40:17,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 19:40:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 19:40:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 19:40:17,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 19:40:17,613 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 19:40:17,615 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 19:40:21,874 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-06 19:40:21,874 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 19:40:21,906 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 19:40:21,906 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 19:40:21,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:40:21 BoogieIcfgContainer [2024-11-06 19:40:21,907 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 19:40:21,909 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 19:40:21,909 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 19:40:21,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 19:40:21,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:40:15" (1/3) ... [2024-11-06 19:40:21,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2321b287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:40:21, skipping insertion in model container [2024-11-06 19:40:21,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:16" (2/3) ... [2024-11-06 19:40:21,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2321b287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:40:21, skipping insertion in model container [2024-11-06 19:40:21,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:40:21" (3/3) ... [2024-11-06 19:40:21,916 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label01.c [2024-11-06 19:40:21,928 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 19:40:21,928 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 19:40:22,002 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 19:40:22,013 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;@792c92fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 19:40:22,013 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 19:40:22,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:22,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-06 19:40:22,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:40:22,031 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:40:22,031 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:40:22,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:40:22,035 INFO L85 PathProgramCache]: Analyzing trace with hash 433832817, now seen corresponding path program 1 times [2024-11-06 19:40:22,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:40:22,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695660524] [2024-11-06 19:40:22,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:40:22,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:40:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:40:22,375 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 19:40:22,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:40:22,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695660524] [2024-11-06 19:40:22,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695660524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:40:22,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:40:22,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:40:22,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177474068] [2024-11-06 19:40:22,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:40:22,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:40:22,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:40:22,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:40:22,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:40:22,407 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:25,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:40:25,822 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2024-11-06 19:40:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:40:25,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2024-11-06 19:40:25,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:40:25,842 INFO L225 Difference]: With dead ends: 2388 [2024-11-06 19:40:25,842 INFO L226 Difference]: Without dead ends: 1506 [2024-11-06 19:40:25,847 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 19:40:25,850 INFO L432 NwaCegarLoop]: 471 mSDtfsCounter, 787 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-06 19:40:25,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 481 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-06 19:40:25,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-06 19:40:25,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2024-11-06 19:40:25,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6385382059800664) internal successors, (2466), 1505 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:25,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2466 transitions. [2024-11-06 19:40:25,961 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2466 transitions. Word has length 47 [2024-11-06 19:40:25,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:40:25,962 INFO L471 AbstractCegarLoop]: Abstraction has 1506 states and 2466 transitions. [2024-11-06 19:40:25,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:25,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2466 transitions. [2024-11-06 19:40:25,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-06 19:40:25,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:40:25,967 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:25,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 19:40:25,967 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:40:25,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:40:25,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1500828227, now seen corresponding path program 1 times [2024-11-06 19:40:25,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:40:25,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094607354] [2024-11-06 19:40:25,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:40:25,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:40:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:40:26,486 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:40:26,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:40:26,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094607354] [2024-11-06 19:40:26,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094607354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:40:26,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:40:26,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:40:26,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816231401] [2024-11-06 19:40:26,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:40:26,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 19:40:26,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:40:26,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 19:40:26,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:40:26,491 INFO L87 Difference]: Start difference. First operand 1506 states and 2466 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:30,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:40:30,012 INFO L93 Difference]: Finished difference Result 4551 states and 7431 transitions. [2024-11-06 19:40:30,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 19:40:30,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2024-11-06 19:40:30,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:40:30,025 INFO L225 Difference]: With dead ends: 4551 [2024-11-06 19:40:30,025 INFO L226 Difference]: Without dead ends: 3010 [2024-11-06 19:40:30,029 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 19:40:30,030 INFO L432 NwaCegarLoop]: 639 mSDtfsCounter, 705 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3076 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 3804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 3076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-06 19:40:30,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 654 Invalid, 3804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 3076 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-06 19:40:30,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2024-11-06 19:40:30,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 3008. [2024-11-06 19:40:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.3418689723977386) internal successors, (4035), 3007 states have internal predecessors, (4035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:30,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4035 transitions. [2024-11-06 19:40:30,097 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4035 transitions. Word has length 118 [2024-11-06 19:40:30,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:40:30,099 INFO L471 AbstractCegarLoop]: Abstraction has 3008 states and 4035 transitions. [2024-11-06 19:40:30,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:30,100 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4035 transitions. [2024-11-06 19:40:30,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-06 19:40:30,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:40:30,102 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:30,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 19:40:30,102 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:40:30,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:40:30,103 INFO L85 PathProgramCache]: Analyzing trace with hash -94536638, now seen corresponding path program 1 times [2024-11-06 19:40:30,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:40:30,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746095375] [2024-11-06 19:40:30,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:40:30,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:40:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:40:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:40:30,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:40:30,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746095375] [2024-11-06 19:40:30,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746095375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:40:30,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:40:30,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:40:30,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602158590] [2024-11-06 19:40:30,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:40:30,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 19:40:30,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:40:30,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 19:40:30,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:40:30,455 INFO L87 Difference]: Start difference. First operand 3008 states and 4035 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:34,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:40:34,377 INFO L93 Difference]: Finished difference Result 9769 states and 12895 transitions. [2024-11-06 19:40:34,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 19:40:34,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2024-11-06 19:40:34,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:40:34,403 INFO L225 Difference]: With dead ends: 9769 [2024-11-06 19:40:34,403 INFO L226 Difference]: Without dead ends: 6763 [2024-11-06 19:40:34,407 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 19:40:34,408 INFO L432 NwaCegarLoop]: 437 mSDtfsCounter, 2094 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4274 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 4841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 4274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-06 19:40:34,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 451 Invalid, 4841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 4274 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-06 19:40:34,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2024-11-06 19:40:34,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2024-11-06 19:40:34,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.2877846790890268) internal successors, (8708), 6762 states have internal predecessors, (8708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:34,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 8708 transitions. [2024-11-06 19:40:34,525 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 8708 transitions. Word has length 156 [2024-11-06 19:40:34,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:40:34,525 INFO L471 AbstractCegarLoop]: Abstraction has 6763 states and 8708 transitions. [2024-11-06 19:40:34,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:34,527 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 8708 transitions. [2024-11-06 19:40:34,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-06 19:40:34,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:40:34,534 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:40:34,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 19:40:34,534 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:40:34,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:40:34,535 INFO L85 PathProgramCache]: Analyzing trace with hash -282317822, now seen corresponding path program 1 times [2024-11-06 19:40:34,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:40:34,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25687146] [2024-11-06 19:40:34,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:40:34,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:40:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:40:35,132 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-06 19:40:35,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:40:35,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25687146] [2024-11-06 19:40:35,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25687146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:40:35,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:40:35,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:40:35,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351706023] [2024-11-06 19:40:35,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:40:35,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 19:40:35,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:40:35,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 19:40:35,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:40:35,137 INFO L87 Difference]: Start difference. First operand 6763 states and 8708 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:38,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:40:38,111 INFO L93 Difference]: Finished difference Result 15816 states and 21400 transitions. [2024-11-06 19:40:38,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 19:40:38,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2024-11-06 19:40:38,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:40:38,134 INFO L225 Difference]: With dead ends: 15816 [2024-11-06 19:40:38,134 INFO L226 Difference]: Without dead ends: 9769 [2024-11-06 19:40:38,141 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 19:40:38,142 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 850 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3465 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 4018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 3465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-06 19:40:38,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 494 Invalid, 4018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 3465 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-06 19:40:38,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9769 states. [2024-11-06 19:40:38,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9769 to 9767. [2024-11-06 19:40:38,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.2733975015359411) internal successors, (12436), 9766 states have internal predecessors, (12436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:38,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12436 transitions. [2024-11-06 19:40:38,299 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12436 transitions. Word has length 259 [2024-11-06 19:40:38,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:40:38,300 INFO L471 AbstractCegarLoop]: Abstraction has 9767 states and 12436 transitions. [2024-11-06 19:40:38,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:38,301 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12436 transitions. [2024-11-06 19:40:38,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-06 19:40:38,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:40:38,304 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 19:40:38,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 19:40:38,304 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:40:38,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:40:38,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1708577746, now seen corresponding path program 1 times [2024-11-06 19:40:38,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:40:38,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445175559] [2024-11-06 19:40:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:40:38,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:40:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:40:38,566 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-06 19:40:38,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:40:38,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445175559] [2024-11-06 19:40:38,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445175559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:40:38,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:40:38,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:40:38,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499816185] [2024-11-06 19:40:38,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:40:38,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:40:38,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:40:38,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:40:38,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:40:38,568 INFO L87 Difference]: Start difference. First operand 9767 states and 12436 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:41,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:40:41,104 INFO L93 Difference]: Finished difference Result 26291 states and 34162 transitions. [2024-11-06 19:40:41,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:40:41,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 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 262 [2024-11-06 19:40:41,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:40:41,144 INFO L225 Difference]: With dead ends: 26291 [2024-11-06 19:40:41,144 INFO L226 Difference]: Without dead ends: 17277 [2024-11-06 19:40:41,151 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 19:40:41,152 INFO L432 NwaCegarLoop]: 592 mSDtfsCounter, 619 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-06 19:40:41,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 598 Invalid, 2815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-06 19:40:41,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17277 states. [2024-11-06 19:40:41,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17277 to 17277. [2024-11-06 19:40:41,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17277 states, 17276 states have (on average 1.1980203750868257) internal successors, (20697), 17276 states have internal predecessors, (20697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:41,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17277 states to 17277 states and 20697 transitions. [2024-11-06 19:40:41,367 INFO L78 Accepts]: Start accepts. Automaton has 17277 states and 20697 transitions. Word has length 262 [2024-11-06 19:40:41,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:40:41,368 INFO L471 AbstractCegarLoop]: Abstraction has 17277 states and 20697 transitions. [2024-11-06 19:40:41,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:41,368 INFO L276 IsEmpty]: Start isEmpty. Operand 17277 states and 20697 transitions. [2024-11-06 19:40:41,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-06 19:40:41,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:40:41,372 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 19:40:41,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 19:40:41,372 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:40:41,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:40:41,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1863466117, now seen corresponding path program 1 times [2024-11-06 19:40:41,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:40:41,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55127548] [2024-11-06 19:40:41,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:40:41,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:40:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:40:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-06 19:40:41,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:40:41,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55127548] [2024-11-06 19:40:41,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55127548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:40:41,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:40:41,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:40:41,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626141806] [2024-11-06 19:40:41,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:40:41,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:40:41,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:40:41,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:40:41,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:40:41,662 INFO L87 Difference]: Start difference. First operand 17277 states and 20697 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:44,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:40:44,357 INFO L93 Difference]: Finished difference Result 33801 states and 40636 transitions. [2024-11-06 19:40:44,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:40:44,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 277 [2024-11-06 19:40:44,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:40:44,392 INFO L225 Difference]: With dead ends: 33801 [2024-11-06 19:40:44,392 INFO L226 Difference]: Without dead ends: 17277 [2024-11-06 19:40:44,406 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 19:40:44,407 INFO L432 NwaCegarLoop]: 1233 mSDtfsCounter, 696 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-06 19:40:44,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1241 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-06 19:40:44,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17277 states. [2024-11-06 19:40:44,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17277 to 16526. [2024-11-06 19:40:44,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16526 states, 16525 states have (on average 1.1696217851739787) internal successors, (19328), 16525 states have internal predecessors, (19328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:44,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16526 states to 16526 states and 19328 transitions. [2024-11-06 19:40:44,578 INFO L78 Accepts]: Start accepts. Automaton has 16526 states and 19328 transitions. Word has length 277 [2024-11-06 19:40:44,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:40:44,579 INFO L471 AbstractCegarLoop]: Abstraction has 16526 states and 19328 transitions. [2024-11-06 19:40:44,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:44,579 INFO L276 IsEmpty]: Start isEmpty. Operand 16526 states and 19328 transitions. [2024-11-06 19:40:44,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-06 19:40:44,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:40:44,587 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:40:44,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-06 19:40:44,587 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:40:44,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:40:44,587 INFO L85 PathProgramCache]: Analyzing trace with hash 268294806, now seen corresponding path program 1 times [2024-11-06 19:40:44,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:40:44,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523891364] [2024-11-06 19:40:44,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:40:44,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:40:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:40:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-06 19:40:45,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:40:45,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523891364] [2024-11-06 19:40:45,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523891364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:40:45,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:40:45,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:40:45,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093221366] [2024-11-06 19:40:45,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:40:45,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:40:45,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:40:45,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:40:45,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:40:45,237 INFO L87 Difference]: Start difference. First operand 16526 states and 19328 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:47,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:40:47,437 INFO L93 Difference]: Finished difference Result 38307 states and 44492 transitions. [2024-11-06 19:40:47,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:40:47,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 278 [2024-11-06 19:40:47,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:40:47,471 INFO L225 Difference]: With dead ends: 38307 [2024-11-06 19:40:47,471 INFO L226 Difference]: Without dead ends: 22534 [2024-11-06 19:40:47,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:40:47,489 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 820 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2285 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 2743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 2285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-06 19:40:47,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 106 Invalid, 2743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 2285 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-06 19:40:47,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22534 states. [2024-11-06 19:40:47,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22534 to 19530. [2024-11-06 19:40:47,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19530 states, 19529 states have (on average 1.1496236366429413) internal successors, (22451), 19529 states have internal predecessors, (22451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:47,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19530 states to 19530 states and 22451 transitions. [2024-11-06 19:40:47,703 INFO L78 Accepts]: Start accepts. Automaton has 19530 states and 22451 transitions. Word has length 278 [2024-11-06 19:40:47,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:40:47,705 INFO L471 AbstractCegarLoop]: Abstraction has 19530 states and 22451 transitions. [2024-11-06 19:40:47,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:47,705 INFO L276 IsEmpty]: Start isEmpty. Operand 19530 states and 22451 transitions. [2024-11-06 19:40:47,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2024-11-06 19:40:47,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:40:47,711 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:47,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 19:40:47,711 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:40:47,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:40:47,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1094495380, now seen corresponding path program 1 times [2024-11-06 19:40:47,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:40:47,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168617007] [2024-11-06 19:40:47,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:40:47,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:40:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:40:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-06 19:40:48,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:40:48,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168617007] [2024-11-06 19:40:48,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168617007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:40:48,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:40:48,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:40:48,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443104428] [2024-11-06 19:40:48,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:40:48,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:40:48,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:40:48,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:40:48,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:40:48,002 INFO L87 Difference]: Start difference. First operand 19530 states and 22451 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:50,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:40:50,406 INFO L93 Difference]: Finished difference Result 45817 states and 53568 transitions. [2024-11-06 19:40:50,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:40:50,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 346 [2024-11-06 19:40:50,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:40:50,438 INFO L225 Difference]: With dead ends: 45817 [2024-11-06 19:40:50,439 INFO L226 Difference]: Without dead ends: 27040 [2024-11-06 19:40:50,455 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 19:40:50,456 INFO L432 NwaCegarLoop]: 1196 mSDtfsCounter, 704 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 2671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-06 19:40:50,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1204 Invalid, 2671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-06 19:40:50,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27040 states. [2024-11-06 19:40:50,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27040 to 27040. [2024-11-06 19:40:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27040 states, 27039 states have (on average 1.13243832981989) internal successors, (30620), 27039 states have internal predecessors, (30620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:50,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27040 states to 27040 states and 30620 transitions. [2024-11-06 19:40:50,805 INFO L78 Accepts]: Start accepts. Automaton has 27040 states and 30620 transitions. Word has length 346 [2024-11-06 19:40:50,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:40:50,805 INFO L471 AbstractCegarLoop]: Abstraction has 27040 states and 30620 transitions. [2024-11-06 19:40:50,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:50,805 INFO L276 IsEmpty]: Start isEmpty. Operand 27040 states and 30620 transitions. [2024-11-06 19:40:50,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-06 19:40:50,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:40:50,810 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:40:50,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-06 19:40:50,810 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:40:50,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:40:50,811 INFO L85 PathProgramCache]: Analyzing trace with hash 34930938, now seen corresponding path program 1 times [2024-11-06 19:40:50,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:40:50,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692697933] [2024-11-06 19:40:50,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:40:50,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:40:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:40:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-06 19:40:51,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:40:51,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692697933] [2024-11-06 19:40:51,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692697933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:40:51,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:40:51,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:40:51,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100314003] [2024-11-06 19:40:51,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:40:51,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:40:51,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:40:51,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:40:51,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:40:51,087 INFO L87 Difference]: Start difference. First operand 27040 states and 30620 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:53,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:40:53,985 INFO L93 Difference]: Finished difference Result 67596 states and 76817 transitions. [2024-11-06 19:40:53,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:40:53,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2024-11-06 19:40:53,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:40:54,022 INFO L225 Difference]: With dead ends: 67596 [2024-11-06 19:40:54,022 INFO L226 Difference]: Without dead ends: 41309 [2024-11-06 19:40:54,043 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 19:40:54,043 INFO L432 NwaCegarLoop]: 1215 mSDtfsCounter, 645 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-06 19:40:54,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 1222 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 2602 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-06 19:40:54,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41309 states. [2024-11-06 19:40:54,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41309 to 40558. [2024-11-06 19:40:54,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40558 states, 40557 states have (on average 1.126537958922011) internal successors, (45689), 40557 states have internal predecessors, (45689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:54,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40558 states to 40558 states and 45689 transitions. [2024-11-06 19:40:54,451 INFO L78 Accepts]: Start accepts. Automaton has 40558 states and 45689 transitions. Word has length 374 [2024-11-06 19:40:54,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:40:54,452 INFO L471 AbstractCegarLoop]: Abstraction has 40558 states and 45689 transitions. [2024-11-06 19:40:54,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:54,452 INFO L276 IsEmpty]: Start isEmpty. Operand 40558 states and 45689 transitions. [2024-11-06 19:40:54,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-11-06 19:40:54,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:40:54,457 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:40:54,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-06 19:40:54,457 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:40:54,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:40:54,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1471075396, now seen corresponding path program 1 times [2024-11-06 19:40:54,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:40:54,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963232894] [2024-11-06 19:40:54,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:40:54,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:40:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:40:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-06 19:40:54,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:40:54,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963232894] [2024-11-06 19:40:54,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963232894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:40:54,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:40:54,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:40:54,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049195477] [2024-11-06 19:40:54,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:40:54,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:40:54,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:40:54,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:40:54,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:40:54,786 INFO L87 Difference]: Start difference. First operand 40558 states and 45689 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:57,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:40:57,517 INFO L93 Difference]: Finished difference Result 98387 states and 112071 transitions. [2024-11-06 19:40:57,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:40:57,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 378 [2024-11-06 19:40:57,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:40:57,572 INFO L225 Difference]: With dead ends: 98387 [2024-11-06 19:40:57,572 INFO L226 Difference]: Without dead ends: 53325 [2024-11-06 19:40:57,598 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 19:40:57,599 INFO L432 NwaCegarLoop]: 1286 mSDtfsCounter, 746 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2209 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 2820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 2209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-06 19:40:57,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1294 Invalid, 2820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 2209 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-06 19:40:57,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53325 states. [2024-11-06 19:40:57,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53325 to 52574. [2024-11-06 19:40:57,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52574 states, 52573 states have (on average 1.1147547220055922) internal successors, (58606), 52573 states have internal predecessors, (58606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:58,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52574 states to 52574 states and 58606 transitions. [2024-11-06 19:40:58,046 INFO L78 Accepts]: Start accepts. Automaton has 52574 states and 58606 transitions. Word has length 378 [2024-11-06 19:40:58,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:40:58,046 INFO L471 AbstractCegarLoop]: Abstraction has 52574 states and 58606 transitions. [2024-11-06 19:40:58,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:40:58,046 INFO L276 IsEmpty]: Start isEmpty. Operand 52574 states and 58606 transitions. [2024-11-06 19:40:58,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2024-11-06 19:40:58,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:40:58,055 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:58,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-06 19:40:58,055 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:40:58,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:40:58,056 INFO L85 PathProgramCache]: Analyzing trace with hash -219790699, now seen corresponding path program 1 times [2024-11-06 19:40:58,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:40:58,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109460979] [2024-11-06 19:40:58,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:40:58,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:40:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:40:58,486 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 554 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-06 19:40:58,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:40:58,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109460979] [2024-11-06 19:40:58,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109460979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:40:58,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:40:58,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:40:58,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078766811] [2024-11-06 19:40:58,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:40:58,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:40:58,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:40:58,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:40:58,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:40:58,490 INFO L87 Difference]: Start difference. First operand 52574 states and 58606 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:41:01,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:41:01,044 INFO L93 Difference]: Finished difference Result 105146 states and 117234 transitions. [2024-11-06 19:41:01,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:41:01,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 450 [2024-11-06 19:41:01,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:41:01,100 INFO L225 Difference]: With dead ends: 105146 [2024-11-06 19:41:01,100 INFO L226 Difference]: Without dead ends: 53325 [2024-11-06 19:41:01,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:41:01,133 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 705 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 2889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-06 19:41:01,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 260 Invalid, 2889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [616 Valid, 2273 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-06 19:41:01,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53325 states. [2024-11-06 19:41:01,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53325 to 51072. [2024-11-06 19:41:01,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51072 states, 51071 states have (on average 1.112138003955278) internal successors, (56798), 51071 states have internal predecessors, (56798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:41:01,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51072 states to 51072 states and 56798 transitions. [2024-11-06 19:41:01,804 INFO L78 Accepts]: Start accepts. Automaton has 51072 states and 56798 transitions. Word has length 450 [2024-11-06 19:41:01,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:41:01,805 INFO L471 AbstractCegarLoop]: Abstraction has 51072 states and 56798 transitions. [2024-11-06 19:41:01,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:41:01,805 INFO L276 IsEmpty]: Start isEmpty. Operand 51072 states and 56798 transitions. [2024-11-06 19:41:01,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-11-06 19:41:01,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:41:01,814 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:01,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-06 19:41:01,814 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:41:01,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:41:01,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1195609237, now seen corresponding path program 1 times [2024-11-06 19:41:01,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:41:01,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724798748] [2024-11-06 19:41:01,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:41:01,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:41:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:41:02,049 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 563 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-06 19:41:02,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:41:02,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724798748] [2024-11-06 19:41:02,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724798748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:41:02,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:41:02,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:41:02,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108885942] [2024-11-06 19:41:02,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:41:02,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:41:02,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:41:02,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:41:02,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:41:02,051 INFO L87 Difference]: Start difference. First operand 51072 states and 56798 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:41:04,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:41:04,508 INFO L93 Difference]: Finished difference Result 104395 states and 115909 transitions. [2024-11-06 19:41:04,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:41:04,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 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 461 [2024-11-06 19:41:04,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:41:04,560 INFO L225 Difference]: With dead ends: 104395 [2024-11-06 19:41:04,560 INFO L226 Difference]: Without dead ends: 54076 [2024-11-06 19:41:04,589 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 19:41:04,589 INFO L432 NwaCegarLoop]: 1169 mSDtfsCounter, 738 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 2669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-06 19:41:04,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 1176 Invalid, 2669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-06 19:41:04,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54076 states. [2024-11-06 19:41:04,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54076 to 52574. [2024-11-06 19:41:05,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52574 states, 52573 states have (on average 1.071177220246134) internal successors, (56315), 52573 states have internal predecessors, (56315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:41:05,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52574 states to 52574 states and 56315 transitions. [2024-11-06 19:41:05,065 INFO L78 Accepts]: Start accepts. Automaton has 52574 states and 56315 transitions. Word has length 461 [2024-11-06 19:41:05,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:41:05,065 INFO L471 AbstractCegarLoop]: Abstraction has 52574 states and 56315 transitions. [2024-11-06 19:41:05,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:41:05,066 INFO L276 IsEmpty]: Start isEmpty. Operand 52574 states and 56315 transitions. [2024-11-06 19:41:05,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2024-11-06 19:41:05,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:41:05,074 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:05,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-06 19:41:05,074 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:41:05,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:41:05,075 INFO L85 PathProgramCache]: Analyzing trace with hash -940077494, now seen corresponding path program 1 times [2024-11-06 19:41:05,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:41:05,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815455561] [2024-11-06 19:41:05,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:41:05,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:41:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:41:05,405 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 579 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-06 19:41:05,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:41:05,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815455561] [2024-11-06 19:41:05,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815455561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:41:05,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:41:05,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:41:05,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136577982] [2024-11-06 19:41:05,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:41:05,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:41:05,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:41:05,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:41:05,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:41:05,408 INFO L87 Difference]: Start difference. First operand 52574 states and 56315 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:41:08,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:41:08,206 INFO L93 Difference]: Finished difference Result 143447 states and 154116 transitions. [2024-11-06 19:41:08,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:41:08,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 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 488 [2024-11-06 19:41:08,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:41:08,288 INFO L225 Difference]: With dead ends: 143447 [2024-11-06 19:41:08,288 INFO L226 Difference]: Without dead ends: 91626 [2024-11-06 19:41:08,316 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 19:41:08,317 INFO L432 NwaCegarLoop]: 1311 mSDtfsCounter, 656 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-06 19:41:08,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 1319 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 2343 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-06 19:41:08,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91626 states. [2024-11-06 19:41:09,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91626 to 82614. [2024-11-06 19:41:09,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82614 states, 82613 states have (on average 1.060474743684408) internal successors, (87609), 82613 states have internal predecessors, (87609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:41:09,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82614 states to 82614 states and 87609 transitions. [2024-11-06 19:41:09,335 INFO L78 Accepts]: Start accepts. Automaton has 82614 states and 87609 transitions. Word has length 488 [2024-11-06 19:41:09,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:41:09,335 INFO L471 AbstractCegarLoop]: Abstraction has 82614 states and 87609 transitions. [2024-11-06 19:41:09,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:41:09,336 INFO L276 IsEmpty]: Start isEmpty. Operand 82614 states and 87609 transitions. [2024-11-06 19:41:09,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2024-11-06 19:41:09,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:41:09,341 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:41:09,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-06 19:41:09,341 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:41:09,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:41:09,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1231520266, now seen corresponding path program 1 times [2024-11-06 19:41:09,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:41:09,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555906364] [2024-11-06 19:41:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:41:09,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:41:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:41:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 571 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-06 19:41:09,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:41:09,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555906364] [2024-11-06 19:41:09,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555906364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:41:09,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:41:09,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:41:09,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234012212] [2024-11-06 19:41:09,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:41:09,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:41:09,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:41:09,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:41:09,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:41:09,731 INFO L87 Difference]: Start difference. First operand 82614 states and 87609 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:41:12,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:41:12,363 INFO L93 Difference]: Finished difference Result 186254 states and 198757 transitions. [2024-11-06 19:41:12,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:41:12,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 488 [2024-11-06 19:41:12,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:41:12,498 INFO L225 Difference]: With dead ends: 186254 [2024-11-06 19:41:12,498 INFO L226 Difference]: Without dead ends: 104393 [2024-11-06 19:41:12,549 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 19:41:12,549 INFO L432 NwaCegarLoop]: 1270 mSDtfsCounter, 668 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-06 19:41:12,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 1278 Invalid, 2673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2229 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-06 19:41:12,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104393 states. [2024-11-06 19:41:13,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104393 to 101389. [2024-11-06 19:41:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101389 states, 101388 states have (on average 1.055479938454255) internal successors, (107013), 101388 states have internal predecessors, (107013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:41:13,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101389 states to 101389 states and 107013 transitions. [2024-11-06 19:41:13,664 INFO L78 Accepts]: Start accepts. Automaton has 101389 states and 107013 transitions. Word has length 488 [2024-11-06 19:41:13,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:41:13,665 INFO L471 AbstractCegarLoop]: Abstraction has 101389 states and 107013 transitions. [2024-11-06 19:41:13,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:41:13,665 INFO L276 IsEmpty]: Start isEmpty. Operand 101389 states and 107013 transitions. [2024-11-06 19:41:13,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-06 19:41:13,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:41:13,674 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 19:41:13,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-06 19:41:13,675 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:41:13,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:41:13,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1212922014, now seen corresponding path program 1 times [2024-11-06 19:41:13,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:41:13,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478081299] [2024-11-06 19:41:13,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:41:13,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:41:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:41:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 638 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-06 19:41:14,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:41:14,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478081299] [2024-11-06 19:41:14,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478081299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:41:14,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:41:14,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 19:41:14,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4094944] [2024-11-06 19:41:14,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:41:14,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 19:41:14,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:41:14,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 19:41:14,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:41:14,282 INFO L87 Difference]: Start difference. First operand 101389 states and 107013 transitions. Second operand has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:41:18,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:41:18,234 INFO L93 Difference]: Finished difference Result 208033 states and 219495 transitions. [2024-11-06 19:41:18,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 19:41:18,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 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 536 [2024-11-06 19:41:18,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:41:18,513 INFO L225 Difference]: With dead ends: 208033 [2024-11-06 19:41:18,513 INFO L226 Difference]: Without dead ends: 107397 [2024-11-06 19:41:18,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:41:18,557 INFO L432 NwaCegarLoop]: 982 mSDtfsCounter, 1302 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5339 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 5756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 5339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-06 19:41:18,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 1004 Invalid, 5756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 5339 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-06 19:41:18,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107397 states. [2024-11-06 19:41:19,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107397 to 101389. [2024-11-06 19:41:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101389 states, 101388 states have (on average 1.050420168067227) internal successors, (106500), 101388 states have internal predecessors, (106500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:41:19,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101389 states to 101389 states and 106500 transitions. [2024-11-06 19:41:19,683 INFO L78 Accepts]: Start accepts. Automaton has 101389 states and 106500 transitions. Word has length 536 [2024-11-06 19:41:19,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:41:19,683 INFO L471 AbstractCegarLoop]: Abstraction has 101389 states and 106500 transitions. [2024-11-06 19:41:19,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:41:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 101389 states and 106500 transitions. [2024-11-06 19:41:19,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2024-11-06 19:41:19,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:41:19,692 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 19:41:19,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-06 19:41:19,692 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:41:19,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:41:19,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1768587887, now seen corresponding path program 1 times [2024-11-06 19:41:19,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:41:19,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430060133] [2024-11-06 19:41:19,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:41:19,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:41:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:41:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 398 proven. 240 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-06 19:41:20,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:41:20,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430060133] [2024-11-06 19:41:20,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430060133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 19:41:20,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966259631] [2024-11-06 19:41:20,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:41:20,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:41:20,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:41:20,722 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 19:41:20,723 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 19:41:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:41:20,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 19:41:20,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 19:41:21,050 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2024-11-06 19:41:21,051 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 19:41:21,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966259631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:41:21,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 19:41:21,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-06 19:41:21,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286756549] [2024-11-06 19:41:21,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:41:21,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:41:21,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:41:21,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:41:21,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-06 19:41:21,053 INFO L87 Difference]: Start difference. First operand 101389 states and 106500 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:41:23,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:41:23,773 INFO L93 Difference]: Finished difference Result 218547 states and 229729 transitions. [2024-11-06 19:41:23,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:41:23,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 542 [2024-11-06 19:41:23,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:41:23,910 INFO L225 Difference]: With dead ends: 218547 [2024-11-06 19:41:23,910 INFO L226 Difference]: Without dead ends: 117911 [2024-11-06 19:41:23,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-06 19:41:23,976 INFO L432 NwaCegarLoop]: 1109 mSDtfsCounter, 827 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-06 19:41:23,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 1117 Invalid, 2546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 2160 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-06 19:41:24,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117911 states. [2024-11-06 19:41:25,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117911 to 116409. [2024-11-06 19:41:25,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116409 states, 116408 states have (on average 1.0464916500584152) internal successors, (121820), 116408 states have internal predecessors, (121820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:41:25,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116409 states to 116409 states and 121820 transitions. [2024-11-06 19:41:25,207 INFO L78 Accepts]: Start accepts. Automaton has 116409 states and 121820 transitions. Word has length 542 [2024-11-06 19:41:25,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:41:25,207 INFO L471 AbstractCegarLoop]: Abstraction has 116409 states and 121820 transitions. [2024-11-06 19:41:25,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:41:25,207 INFO L276 IsEmpty]: Start isEmpty. Operand 116409 states and 121820 transitions. [2024-11-06 19:41:25,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2024-11-06 19:41:25,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:41:25,225 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:41:25,238 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 19:41:25,426 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,SelfDestructingSolverStorable15 [2024-11-06 19:41:25,426 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:41:25,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:41:25,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1478363861, now seen corresponding path program 1 times [2024-11-06 19:41:25,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:41:25,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182736154] [2024-11-06 19:41:25,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:41:25,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:41:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:41:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 451 proven. 360 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-06 19:41:26,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:41:26,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182736154] [2024-11-06 19:41:26,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182736154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 19:41:26,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024060274] [2024-11-06 19:41:26,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:41:26,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:41:26,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:41:26,967 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 19:41:26,969 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 19:41:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:41:27,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 19:41:27,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 19:41:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 592 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-11-06 19:41:28,317 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 19:41:28,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024060274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:41:28,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 19:41:28,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-06 19:41:28,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566077671] [2024-11-06 19:41:28,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:41:28,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:41:28,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:41:28,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:41:28,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-06 19:41:28,319 INFO L87 Difference]: Start difference. First operand 116409 states and 121820 transitions. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:41:30,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:41:30,796 INFO L93 Difference]: Finished difference Result 233567 states and 244390 transitions. [2024-11-06 19:41:30,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:41:30,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 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 725 [2024-11-06 19:41:30,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:41:31,130 INFO L225 Difference]: With dead ends: 233567 [2024-11-06 19:41:31,130 INFO L226 Difference]: Without dead ends: 116409 [2024-11-06 19:41:31,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 725 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-06 19:41:31,178 INFO L432 NwaCegarLoop]: 1344 mSDtfsCounter, 489 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2011 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 2173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-06 19:41:31,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 1352 Invalid, 2173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2011 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-06 19:41:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116409 states. [2024-11-06 19:41:32,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116409 to 115658.