./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label47.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_label47.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', '6b006d8e4231a58992706b525e43e67dd3e0df162d0a378f0ac12d9a99bfe781'] 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_label47.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 6b006d8e4231a58992706b525e43e67dd3e0df162d0a378f0ac12d9a99bfe781 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 19:44:40,910 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 19:44:40,973 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 19:44:40,977 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 19:44:40,977 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 19:44:40,992 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 19:44:40,992 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 19:44:40,992 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 19:44:40,993 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 19:44:40,993 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 19:44:40,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 19:44:40,993 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 19:44:40,993 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 19:44:40,993 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 19:44:40,994 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 19:44:40,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 19:44:40,994 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 19:44:40,994 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 19:44:40,994 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 19:44:40,994 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 19:44:40,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 19:44:40,994 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 19:44:40,994 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 19:44:40,994 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 19:44:40,994 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 19:44:40,995 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 19:44:40,995 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 19:44:40,995 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 19:44:40,995 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 19:44:40,995 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 19:44:40,995 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 19:44:40,995 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 19:44:40,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 19:44:40,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 19:44:40,995 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 19:44:40,996 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 19:44:40,996 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 19:44:40,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 19:44:40,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 19:44:40,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 19:44:40,996 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 19:44:40,996 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 19:44:40,996 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 -> 6b006d8e4231a58992706b525e43e67dd3e0df162d0a378f0ac12d9a99bfe781 [2024-11-06 19:44:41,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 19:44:41,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 19:44:41,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 19:44:41,243 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 19:44:41,244 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 19:44:41,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label47.c [2024-11-06 19:44:42,396 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 19:44:42,738 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 19:44:42,739 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label47.c [2024-11-06 19:44:42,768 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a38016ee2/392dd4782aec4593b9298e08aa80bda7/FLAG2148bc089 [2024-11-06 19:44:42,783 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a38016ee2/392dd4782aec4593b9298e08aa80bda7 [2024-11-06 19:44:42,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 19:44:42,787 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 19:44:42,789 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 19:44:42,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 19:44:42,792 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 19:44:42,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:44:42" (1/1) ... [2024-11-06 19:44:42,793 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@495f4316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:42, skipping insertion in model container [2024-11-06 19:44:42,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:44:42" (1/1) ... [2024-11-06 19:44:42,863 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 19:44:43,033 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_label47.c[4902,4915] [2024-11-06 19:44:43,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 19:44:43,466 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 19:44:43,476 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_label47.c[4902,4915] [2024-11-06 19:44:43,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 19:44:43,713 INFO L204 MainTranslator]: Completed translation [2024-11-06 19:44:43,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:43 WrapperNode [2024-11-06 19:44:43,714 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 19:44:43,715 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 19:44:43,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 19:44:43,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 19:44:43,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:43" (1/1) ... [2024-11-06 19:44:43,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:43" (1/1) ... [2024-11-06 19:44:44,052 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-11-06 19:44:44,053 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 19:44:44,053 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 19:44:44,053 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 19:44:44,054 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 19:44:44,061 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:43" (1/1) ... [2024-11-06 19:44:44,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:43" (1/1) ... [2024-11-06 19:44:44,095 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:43" (1/1) ... [2024-11-06 19:44:44,222 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-06 19:44:44,222 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:43" (1/1) ... [2024-11-06 19:44:44,223 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:43" (1/1) ... [2024-11-06 19:44:44,376 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:43" (1/1) ... [2024-11-06 19:44:44,419 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:43" (1/1) ... [2024-11-06 19:44:44,438 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:43" (1/1) ... [2024-11-06 19:44:44,450 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:43" (1/1) ... [2024-11-06 19:44:44,495 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 19:44:44,497 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 19:44:44,498 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 19:44:44,498 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 19:44:44,499 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:43" (1/1) ... [2024-11-06 19:44:44,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 19:44:44,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:44:44,529 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 19:44:44,534 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 19:44:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 19:44:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 19:44:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 19:44:44,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 19:44:44,612 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 19:44:44,614 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 19:44:47,843 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-06 19:44:47,843 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 19:44:47,864 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 19:44:47,865 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 19:44:47,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:44:47 BoogieIcfgContainer [2024-11-06 19:44:47,865 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 19:44:47,867 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 19:44:47,867 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 19:44:47,870 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 19:44:47,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:44:42" (1/3) ... [2024-11-06 19:44:47,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292c5bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:44:47, skipping insertion in model container [2024-11-06 19:44:47,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:43" (2/3) ... [2024-11-06 19:44:47,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292c5bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:44:47, skipping insertion in model container [2024-11-06 19:44:47,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:44:47" (3/3) ... [2024-11-06 19:44:47,872 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label47.c [2024-11-06 19:44:47,884 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 19:44:47,884 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 19:44:47,947 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 19:44:47,957 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;@4d3bf0bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 19:44:47,958 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 19:44:47,966 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 19:44:47,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-06 19:44:47,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:44:47,972 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] [2024-11-06 19:44:47,973 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:44:47,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:44:47,977 INFO L85 PathProgramCache]: Analyzing trace with hash 323974986, now seen corresponding path program 1 times [2024-11-06 19:44:47,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:44:47,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027741560] [2024-11-06 19:44:47,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:44:47,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:44:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:44:48,250 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 19:44:48,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:44:48,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027741560] [2024-11-06 19:44:48,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027741560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:44:48,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:44:48,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:44:48,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217599979] [2024-11-06 19:44:48,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:44:48,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:44:48,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:44:48,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:44:48,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:44:48,271 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 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:51,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:44:51,203 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2024-11-06 19:44:51,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:44:51,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2024-11-06 19:44:51,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:44:51,221 INFO L225 Difference]: With dead ends: 2388 [2024-11-06 19:44:51,221 INFO L226 Difference]: Without dead ends: 1506 [2024-11-06 19:44:51,227 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 19:44:51,229 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 798 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 3264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-06 19:44:51,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 112 Invalid, 3264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-06 19:44:51,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-06 19:44:51,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2024-11-06 19:44:51,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.86578073089701) internal successors, (2808), 1505 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:51,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2808 transitions. [2024-11-06 19:44:51,307 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2808 transitions. Word has length 38 [2024-11-06 19:44:51,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:44:51,307 INFO L471 AbstractCegarLoop]: Abstraction has 1506 states and 2808 transitions. [2024-11-06 19:44:51,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:51,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2808 transitions. [2024-11-06 19:44:51,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-06 19:44:51,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:44:51,309 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:44:51,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 19:44:51,310 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:44:51,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:44:51,311 INFO L85 PathProgramCache]: Analyzing trace with hash 533491976, now seen corresponding path program 1 times [2024-11-06 19:44:51,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:44:51,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924754028] [2024-11-06 19:44:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:44:51,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:44:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:44:51,603 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:44:51,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:44:51,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924754028] [2024-11-06 19:44:51,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924754028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:44:51,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:44:51,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:44:51,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203436355] [2024-11-06 19:44:51,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:44:51,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 19:44:51,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:44:51,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 19:44:51,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:44:51,606 INFO L87 Difference]: Start difference. First operand 1506 states and 2808 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:55,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:44:55,518 INFO L93 Difference]: Finished difference Result 5271 states and 9796 transitions. [2024-11-06 19:44:55,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 19:44:55,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2024-11-06 19:44:55,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:44:55,531 INFO L225 Difference]: With dead ends: 5271 [2024-11-06 19:44:55,531 INFO L226 Difference]: Without dead ends: 3767 [2024-11-06 19:44:55,533 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 19:44:55,535 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 2310 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3612 mSolverCounterSat, 1529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 5141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1529 IncrementalHoareTripleChecker+Valid, 3612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-06 19:44:55,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2310 Valid, 199 Invalid, 5141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1529 Valid, 3612 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-06 19:44:55,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2024-11-06 19:44:55,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3759. [2024-11-06 19:44:55,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 1.6053751995742416) internal successors, (6033), 3758 states have internal predecessors, (6033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:55,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 6033 transitions. [2024-11-06 19:44:55,620 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 6033 transitions. Word has length 103 [2024-11-06 19:44:55,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:44:55,620 INFO L471 AbstractCegarLoop]: Abstraction has 3759 states and 6033 transitions. [2024-11-06 19:44:55,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:55,621 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 6033 transitions. [2024-11-06 19:44:55,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-06 19:44:55,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:44:55,625 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 19:44:55,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 19:44:55,625 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:44:55,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:44:55,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1641572268, now seen corresponding path program 1 times [2024-11-06 19:44:55,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:44:55,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746073739] [2024-11-06 19:44:55,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:44:55,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:44:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:44:56,094 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-06 19:44:56,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:44:56,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746073739] [2024-11-06 19:44:56,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746073739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:44:56,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:44:56,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:44:56,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668478102] [2024-11-06 19:44:56,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:44:56,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 19:44:56,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:44:56,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 19:44:56,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:44:56,097 INFO L87 Difference]: Start difference. First operand 3759 states and 6033 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:58,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:44:58,849 INFO L93 Difference]: Finished difference Result 10559 states and 17375 transitions. [2024-11-06 19:44:58,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 19:44:58,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 199 [2024-11-06 19:44:58,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:44:58,876 INFO L225 Difference]: With dead ends: 10559 [2024-11-06 19:44:58,877 INFO L226 Difference]: Without dead ends: 6765 [2024-11-06 19:44:58,882 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 19:44:58,884 INFO L432 NwaCegarLoop]: 695 mSDtfsCounter, 704 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 3837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-06 19:44:58,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 710 Invalid, 3837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 3109 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-06 19:44:58,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6765 states. [2024-11-06 19:44:58,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6765 to 6763. [2024-11-06 19:44:58,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.3571428571428572) internal successors, (9177), 6762 states have internal predecessors, (9177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:58,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 9177 transitions. [2024-11-06 19:44:58,982 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 9177 transitions. Word has length 199 [2024-11-06 19:44:58,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:44:58,983 INFO L471 AbstractCegarLoop]: Abstraction has 6763 states and 9177 transitions. [2024-11-06 19:44:58,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:44:58,986 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 9177 transitions. [2024-11-06 19:44:58,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-06 19:44:58,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:44:58,991 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 19:44:58,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 19:44:58,992 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:44:58,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:44:58,993 INFO L85 PathProgramCache]: Analyzing trace with hash -159919323, now seen corresponding path program 1 times [2024-11-06 19:44:58,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:44:58,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228944250] [2024-11-06 19:44:58,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:44:58,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:44:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:44:59,191 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-06 19:44:59,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:44:59,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228944250] [2024-11-06 19:44:59,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228944250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:44:59,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:44:59,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:44:59,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267554449] [2024-11-06 19:44:59,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:44:59,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:44:59,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:44:59,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:44:59,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:44:59,194 INFO L87 Difference]: Start difference. First operand 6763 states and 9177 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:01,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:01,330 INFO L93 Difference]: Finished difference Result 16530 states and 23478 transitions. [2024-11-06 19:45:01,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:01,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 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 269 [2024-11-06 19:45:01,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:01,354 INFO L225 Difference]: With dead ends: 16530 [2024-11-06 19:45:01,354 INFO L226 Difference]: Without dead ends: 9769 [2024-11-06 19:45:01,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:01,361 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 2809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:01,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 390 Invalid, 2809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2343 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-06 19:45:01,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9769 states. [2024-11-06 19:45:01,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9769 to 9767. [2024-11-06 19:45:01,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.3653491705918492) internal successors, (13334), 9766 states have internal predecessors, (13334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:01,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 13334 transitions. [2024-11-06 19:45:01,491 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 13334 transitions. Word has length 269 [2024-11-06 19:45:01,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:01,492 INFO L471 AbstractCegarLoop]: Abstraction has 9767 states and 13334 transitions. [2024-11-06 19:45:01,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:01,493 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 13334 transitions. [2024-11-06 19:45:01,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-06 19:45:01,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:01,499 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 19:45:01,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 19:45:01,500 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:01,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:01,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1722505003, now seen corresponding path program 1 times [2024-11-06 19:45:01,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:01,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597207641] [2024-11-06 19:45:01,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:01,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-06 19:45:01,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:01,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597207641] [2024-11-06 19:45:01,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597207641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:01,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:01,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:45:01,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058946114] [2024-11-06 19:45:01,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:01,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:01,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:01,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:01,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:01,708 INFO L87 Difference]: Start difference. First operand 9767 states and 13334 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:03,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:03,946 INFO L93 Difference]: Finished difference Result 27042 states and 37585 transitions. [2024-11-06 19:45:03,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:03,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 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 301 [2024-11-06 19:45:03,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:03,979 INFO L225 Difference]: With dead ends: 27042 [2024-11-06 19:45:03,979 INFO L226 Difference]: Without dead ends: 17277 [2024-11-06 19:45:03,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:03,988 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 697 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 860 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 860 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:03,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 427 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [860 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-06 19:45:04,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17277 states. [2024-11-06 19:45:04,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17277 to 15775. [2024-11-06 19:45:04,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15774 states have (on average 1.2816026372511728) internal successors, (20216), 15774 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:04,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 20216 transitions. [2024-11-06 19:45:04,156 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 20216 transitions. Word has length 301 [2024-11-06 19:45:04,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:04,156 INFO L471 AbstractCegarLoop]: Abstraction has 15775 states and 20216 transitions. [2024-11-06 19:45:04,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:04,157 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 20216 transitions. [2024-11-06 19:45:04,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-11-06 19:45:04,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:04,163 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:45:04,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 19:45:04,163 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:04,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:04,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1111791984, now seen corresponding path program 1 times [2024-11-06 19:45:04,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:04,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944240387] [2024-11-06 19:45:04,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:04,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-06 19:45:04,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:04,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944240387] [2024-11-06 19:45:04,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944240387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:04,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:04,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:04,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300006938] [2024-11-06 19:45:04,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:04,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:04,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:04,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:04,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:04,366 INFO L87 Difference]: Start difference. First operand 15775 states and 20216 transitions. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:06,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:06,584 INFO L93 Difference]: Finished difference Result 39058 states and 51349 transitions. [2024-11-06 19:45:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:06,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 380 [2024-11-06 19:45:06,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:06,621 INFO L225 Difference]: With dead ends: 39058 [2024-11-06 19:45:06,622 INFO L226 Difference]: Without dead ends: 23285 [2024-11-06 19:45:06,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:06,635 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 739 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 909 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 2984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 909 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:06,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 238 Invalid, 2984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [909 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-06 19:45:06,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23285 states. [2024-11-06 19:45:06,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23285 to 23285. [2024-11-06 19:45:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23285 states, 23284 states have (on average 1.27456622573441) internal successors, (29677), 23284 states have internal predecessors, (29677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:06,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23285 states to 23285 states and 29677 transitions. [2024-11-06 19:45:06,862 INFO L78 Accepts]: Start accepts. Automaton has 23285 states and 29677 transitions. Word has length 380 [2024-11-06 19:45:06,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:06,863 INFO L471 AbstractCegarLoop]: Abstraction has 23285 states and 29677 transitions. [2024-11-06 19:45:06,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:06,864 INFO L276 IsEmpty]: Start isEmpty. Operand 23285 states and 29677 transitions. [2024-11-06 19:45:06,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-11-06 19:45:06,869 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:06,869 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:45:06,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-06 19:45:06,869 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:06,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:06,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2131316438, now seen corresponding path program 1 times [2024-11-06 19:45:06,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:06,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295082647] [2024-11-06 19:45:06,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:06,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-06 19:45:07,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:07,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295082647] [2024-11-06 19:45:07,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295082647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:07,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:07,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:07,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873422673] [2024-11-06 19:45:07,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:07,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:07,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:07,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:07,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:07,091 INFO L87 Difference]: Start difference. First operand 23285 states and 29677 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:09,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:09,350 INFO L93 Difference]: Finished difference Result 57082 states and 72828 transitions. [2024-11-06 19:45:09,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:09,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 397 [2024-11-06 19:45:09,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:09,392 INFO L225 Difference]: With dead ends: 57082 [2024-11-06 19:45:09,393 INFO L226 Difference]: Without dead ends: 33799 [2024-11-06 19:45:09,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:09,416 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 730 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 2997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:09,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 283 Invalid, 2997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2286 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-06 19:45:09,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33799 states. [2024-11-06 19:45:09,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33799 to 33048. [2024-11-06 19:45:09,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33048 states, 33047 states have (on average 1.2610827003964051) internal successors, (41675), 33047 states have internal predecessors, (41675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:09,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33048 states to 33048 states and 41675 transitions. [2024-11-06 19:45:09,846 INFO L78 Accepts]: Start accepts. Automaton has 33048 states and 41675 transitions. Word has length 397 [2024-11-06 19:45:09,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:09,846 INFO L471 AbstractCegarLoop]: Abstraction has 33048 states and 41675 transitions. [2024-11-06 19:45:09,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:09,847 INFO L276 IsEmpty]: Start isEmpty. Operand 33048 states and 41675 transitions. [2024-11-06 19:45:09,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2024-11-06 19:45:09,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:09,854 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:45:09,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 19:45:09,855 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:09,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:09,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1227272470, now seen corresponding path program 1 times [2024-11-06 19:45:09,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:09,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080340829] [2024-11-06 19:45:09,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:09,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:10,106 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-06 19:45:10,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:10,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080340829] [2024-11-06 19:45:10,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080340829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:10,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:10,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:10,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298696126] [2024-11-06 19:45:10,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:10,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:10,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:10,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:10,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:10,109 INFO L87 Difference]: Start difference. First operand 33048 states and 41675 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:12,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:12,559 INFO L93 Difference]: Finished difference Result 90877 states and 116271 transitions. [2024-11-06 19:45:12,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:12,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 408 [2024-11-06 19:45:12,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:12,625 INFO L225 Difference]: With dead ends: 90877 [2024-11-06 19:45:12,625 INFO L226 Difference]: Without dead ends: 57831 [2024-11-06 19:45:12,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:12,638 INFO L432 NwaCegarLoop]: 558 mSDtfsCounter, 698 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2296 mSolverCounterSat, 632 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 2928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 2296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:12,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 564 Invalid, 2928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [632 Valid, 2296 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-06 19:45:12,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57831 states. [2024-11-06 19:45:13,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57831 to 56329. [2024-11-06 19:45:13,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56329 states, 56328 states have (on average 1.2354779150688822) internal successors, (69592), 56328 states have internal predecessors, (69592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:13,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56329 states to 56329 states and 69592 transitions. [2024-11-06 19:45:13,126 INFO L78 Accepts]: Start accepts. Automaton has 56329 states and 69592 transitions. Word has length 408 [2024-11-06 19:45:13,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:13,127 INFO L471 AbstractCegarLoop]: Abstraction has 56329 states and 69592 transitions. [2024-11-06 19:45:13,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:13,127 INFO L276 IsEmpty]: Start isEmpty. Operand 56329 states and 69592 transitions. [2024-11-06 19:45:13,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2024-11-06 19:45:13,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:13,133 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:45:13,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-06 19:45:13,133 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:13,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:13,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1177107803, now seen corresponding path program 1 times [2024-11-06 19:45:13,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:13,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139915095] [2024-11-06 19:45:13,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:13,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:13,463 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-06 19:45:13,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:13,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139915095] [2024-11-06 19:45:13,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139915095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:13,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:13,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:13,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020587595] [2024-11-06 19:45:13,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:13,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:13,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:13,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:13,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:13,466 INFO L87 Difference]: Start difference. First operand 56329 states and 69592 transitions. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:15,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:15,695 INFO L93 Difference]: Finished difference Result 139692 states and 171784 transitions. [2024-11-06 19:45:15,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:15,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 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 422 [2024-11-06 19:45:15,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:15,799 INFO L225 Difference]: With dead ends: 139692 [2024-11-06 19:45:15,799 INFO L226 Difference]: Without dead ends: 83365 [2024-11-06 19:45:15,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:15,845 INFO L432 NwaCegarLoop]: 1301 mSDtfsCounter, 674 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 2698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:15,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1309 Invalid, 2698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-06 19:45:15,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83365 states. [2024-11-06 19:45:16,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83365 to 79610. [2024-11-06 19:45:16,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79610 states, 79609 states have (on average 1.1983318469017321) internal successors, (95398), 79609 states have internal predecessors, (95398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:16,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79610 states to 79610 states and 95398 transitions. [2024-11-06 19:45:16,876 INFO L78 Accepts]: Start accepts. Automaton has 79610 states and 95398 transitions. Word has length 422 [2024-11-06 19:45:16,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:16,877 INFO L471 AbstractCegarLoop]: Abstraction has 79610 states and 95398 transitions. [2024-11-06 19:45:16,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:16,878 INFO L276 IsEmpty]: Start isEmpty. Operand 79610 states and 95398 transitions. [2024-11-06 19:45:16,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-06 19:45:16,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:16,888 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, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:45:16,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-06 19:45:16,889 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:16,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:16,890 INFO L85 PathProgramCache]: Analyzing trace with hash 401496922, now seen corresponding path program 1 times [2024-11-06 19:45:16,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:16,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262026081] [2024-11-06 19:45:16,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:16,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:17,706 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-06 19:45:17,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:17,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262026081] [2024-11-06 19:45:17,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262026081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:17,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:17,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:17,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53313612] [2024-11-06 19:45:17,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:17,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:17,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:17,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:17,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:17,708 INFO L87 Difference]: Start difference. First operand 79610 states and 95398 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:19,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:19,889 INFO L93 Difference]: Finished difference Result 171985 states and 205413 transitions. [2024-11-06 19:45:19,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:19,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 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 434 [2024-11-06 19:45:19,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:20,005 INFO L225 Difference]: With dead ends: 171985 [2024-11-06 19:45:20,005 INFO L226 Difference]: Without dead ends: 92377 [2024-11-06 19:45:20,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:20,059 INFO L432 NwaCegarLoop]: 904 mSDtfsCounter, 803 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2138 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:20,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 912 Invalid, 2729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2138 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-06 19:45:20,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92377 states. [2024-11-06 19:45:20,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92377 to 87120. [2024-11-06 19:45:20,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87120 states, 87119 states have (on average 1.1601028478288318) internal successors, (101067), 87119 states have internal predecessors, (101067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:21,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87120 states to 87120 states and 101067 transitions. [2024-11-06 19:45:21,060 INFO L78 Accepts]: Start accepts. Automaton has 87120 states and 101067 transitions. Word has length 434 [2024-11-06 19:45:21,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:21,061 INFO L471 AbstractCegarLoop]: Abstraction has 87120 states and 101067 transitions. [2024-11-06 19:45:21,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:21,061 INFO L276 IsEmpty]: Start isEmpty. Operand 87120 states and 101067 transitions. [2024-11-06 19:45:21,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2024-11-06 19:45:21,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:21,072 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:45:21,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-06 19:45:21,072 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:21,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:21,073 INFO L85 PathProgramCache]: Analyzing trace with hash -424253715, now seen corresponding path program 1 times [2024-11-06 19:45:21,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:21,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013593835] [2024-11-06 19:45:21,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:21,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 547 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-06 19:45:21,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:21,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013593835] [2024-11-06 19:45:21,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013593835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:21,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:21,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:21,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636958950] [2024-11-06 19:45:21,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:21,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:21,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:21,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:21,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:21,417 INFO L87 Difference]: Start difference. First operand 87120 states and 101067 transitions. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:24,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:24,027 INFO L93 Difference]: Finished difference Result 208033 states and 242640 transitions. [2024-11-06 19:45:24,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:24,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 554 [2024-11-06 19:45:24,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:24,166 INFO L225 Difference]: With dead ends: 208033 [2024-11-06 19:45:24,166 INFO L226 Difference]: Without dead ends: 120915 [2024-11-06 19:45:24,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:24,217 INFO L432 NwaCegarLoop]: 1283 mSDtfsCounter, 580 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:24,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 1291 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2331 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-06 19:45:24,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120915 states. [2024-11-06 19:45:25,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120915 to 107397. [2024-11-06 19:45:25,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107397 states, 107396 states have (on average 1.144688815225893) internal successors, (122935), 107396 states have internal predecessors, (122935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:25,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107397 states to 107397 states and 122935 transitions. [2024-11-06 19:45:25,816 INFO L78 Accepts]: Start accepts. Automaton has 107397 states and 122935 transitions. Word has length 554 [2024-11-06 19:45:25,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:25,816 INFO L471 AbstractCegarLoop]: Abstraction has 107397 states and 122935 transitions. [2024-11-06 19:45:25,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:25,817 INFO L276 IsEmpty]: Start isEmpty. Operand 107397 states and 122935 transitions. [2024-11-06 19:45:25,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2024-11-06 19:45:25,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:25,828 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:45:25,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-06 19:45:25,828 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:25,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:25,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1521170866, now seen corresponding path program 1 times [2024-11-06 19:45:25,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:25,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946769831] [2024-11-06 19:45:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:25,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 818 backedges. 684 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-06 19:45:26,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:26,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946769831] [2024-11-06 19:45:26,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946769831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:26,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:26,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:26,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009371054] [2024-11-06 19:45:26,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:26,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:26,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:26,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:26,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:26,013 INFO L87 Difference]: Start difference. First operand 107397 states and 122935 transitions. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:28,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:28,478 INFO L93 Difference]: Finished difference Result 217045 states and 248136 transitions. [2024-11-06 19:45:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:28,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 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 584 [2024-11-06 19:45:28,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:28,593 INFO L225 Difference]: With dead ends: 217045 [2024-11-06 19:45:28,593 INFO L226 Difference]: Without dead ends: 109650 [2024-11-06 19:45:28,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:28,620 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 761 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 2667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:28,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 232 Invalid, 2667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-06 19:45:28,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109650 states. [2024-11-06 19:45:29,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109650 to 103642. [2024-11-06 19:45:29,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103642 states, 103641 states have (on average 1.1112687063999769) internal successors, (115173), 103641 states have internal predecessors, (115173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:29,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103642 states to 103642 states and 115173 transitions. [2024-11-06 19:45:29,708 INFO L78 Accepts]: Start accepts. Automaton has 103642 states and 115173 transitions. Word has length 584 [2024-11-06 19:45:29,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:29,708 INFO L471 AbstractCegarLoop]: Abstraction has 103642 states and 115173 transitions. [2024-11-06 19:45:29,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 103642 states and 115173 transitions. [2024-11-06 19:45:29,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2024-11-06 19:45:29,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:29,725 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:45:29,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-06 19:45:29,726 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:29,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:29,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1369049923, now seen corresponding path program 1 times [2024-11-06 19:45:29,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:29,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361501617] [2024-11-06 19:45:29,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:29,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2024-11-06 19:45:30,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:30,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361501617] [2024-11-06 19:45:30,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361501617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:30,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:30,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:30,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44602577] [2024-11-06 19:45:30,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:30,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:30,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:30,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:30,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:30,145 INFO L87 Difference]: Start difference. First operand 103642 states and 115173 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:32,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:32,558 INFO L93 Difference]: Finished difference Result 227559 states and 252921 transitions. [2024-11-06 19:45:32,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:32,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 600 [2024-11-06 19:45:32,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:32,704 INFO L225 Difference]: With dead ends: 227559 [2024-11-06 19:45:32,704 INFO L226 Difference]: Without dead ends: 123919 [2024-11-06 19:45:32,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:32,750 INFO L432 NwaCegarLoop]: 1109 mSDtfsCounter, 806 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:32,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1117 Invalid, 2630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-06 19:45:32,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123919 states. [2024-11-06 19:45:33,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123919 to 123168. [2024-11-06 19:45:33,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123168 states, 123167 states have (on average 1.1017155569267743) internal successors, (135695), 123167 states have internal predecessors, (135695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:34,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123168 states to 123168 states and 135695 transitions. [2024-11-06 19:45:34,154 INFO L78 Accepts]: Start accepts. Automaton has 123168 states and 135695 transitions. Word has length 600 [2024-11-06 19:45:34,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:34,155 INFO L471 AbstractCegarLoop]: Abstraction has 123168 states and 135695 transitions. [2024-11-06 19:45:34,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:34,155 INFO L276 IsEmpty]: Start isEmpty. Operand 123168 states and 135695 transitions. [2024-11-06 19:45:34,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2024-11-06 19:45:34,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:34,166 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:45:34,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-06 19:45:34,166 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:34,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:34,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1488648811, now seen corresponding path program 1 times [2024-11-06 19:45:34,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:34,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068333365] [2024-11-06 19:45:34,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:34,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 724 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-06 19:45:34,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:34,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068333365] [2024-11-06 19:45:34,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068333365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:34,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:34,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:34,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306850573] [2024-11-06 19:45:34,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:34,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:34,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:34,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:34,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:34,492 INFO L87 Difference]: Start difference. First operand 123168 states and 135695 transitions. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:37,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:37,167 INFO L93 Difference]: Finished difference Result 274121 states and 303989 transitions. [2024-11-06 19:45:37,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:37,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 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 606 [2024-11-06 19:45:37,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:37,331 INFO L225 Difference]: With dead ends: 274121 [2024-11-06 19:45:37,331 INFO L226 Difference]: Without dead ends: 150955 [2024-11-06 19:45:37,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:37,384 INFO L432 NwaCegarLoop]: 1276 mSDtfsCounter, 647 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 2649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:37,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1284 Invalid, 2649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-06 19:45:37,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150955 states. [2024-11-06 19:45:38,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150955 to 144947. [2024-11-06 19:45:38,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144947 states, 144946 states have (on average 1.0928621693596237) internal successors, (158406), 144946 states have internal predecessors, (158406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:38,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144947 states to 144947 states and 158406 transitions. [2024-11-06 19:45:38,967 INFO L78 Accepts]: Start accepts. Automaton has 144947 states and 158406 transitions. Word has length 606 [2024-11-06 19:45:38,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:38,970 INFO L471 AbstractCegarLoop]: Abstraction has 144947 states and 158406 transitions. [2024-11-06 19:45:38,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:38,970 INFO L276 IsEmpty]: Start isEmpty. Operand 144947 states and 158406 transitions. [2024-11-06 19:45:38,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2024-11-06 19:45:38,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:38,979 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:45:38,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-06 19:45:38,980 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:38,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:38,980 INFO L85 PathProgramCache]: Analyzing trace with hash 129179757, now seen corresponding path program 1 times [2024-11-06 19:45:38,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:38,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418726293] [2024-11-06 19:45:38,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:38,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:39,447 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 539 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2024-11-06 19:45:39,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:39,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418726293] [2024-11-06 19:45:39,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418726293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:39,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:39,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:39,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740077592] [2024-11-06 19:45:39,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:39,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:39,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:39,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:39,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:39,449 INFO L87 Difference]: Start difference. First operand 144947 states and 158406 transitions. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:41,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:41,964 INFO L93 Difference]: Finished difference Result 294398 states and 321384 transitions. [2024-11-06 19:45:41,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:41,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 621 [2024-11-06 19:45:41,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:42,133 INFO L225 Difference]: With dead ends: 294398 [2024-11-06 19:45:42,133 INFO L226 Difference]: Without dead ends: 148702 [2024-11-06 19:45:42,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:42,205 INFO L432 NwaCegarLoop]: 1005 mSDtfsCounter, 723 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 2640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:42,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 1012 Invalid, 2640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-06 19:45:42,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148702 states. [2024-11-06 19:45:43,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148702 to 131429. [2024-11-06 19:45:43,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131429 states, 131428 states have (on average 1.0757753294579542) internal successors, (141387), 131428 states have internal predecessors, (141387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:43,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131429 states to 131429 states and 141387 transitions. [2024-11-06 19:45:43,829 INFO L78 Accepts]: Start accepts. Automaton has 131429 states and 141387 transitions. Word has length 621 [2024-11-06 19:45:43,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:43,830 INFO L471 AbstractCegarLoop]: Abstraction has 131429 states and 141387 transitions. [2024-11-06 19:45:43,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:43,830 INFO L276 IsEmpty]: Start isEmpty. Operand 131429 states and 141387 transitions. [2024-11-06 19:45:43,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2024-11-06 19:45:43,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:43,838 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:45:43,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-06 19:45:43,838 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:43,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:43,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1476103435, now seen corresponding path program 1 times [2024-11-06 19:45:43,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:43,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269212685] [2024-11-06 19:45:43,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:43,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:44,417 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 748 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-06 19:45:44,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:44,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269212685] [2024-11-06 19:45:44,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269212685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:44,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:44,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:44,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736699091] [2024-11-06 19:45:44,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:44,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:44,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:44,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:44,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:44,418 INFO L87 Difference]: Start difference. First operand 131429 states and 141387 transitions. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:46,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:46,955 INFO L93 Difference]: Finished difference Result 284635 states and 305574 transitions. [2024-11-06 19:45:46,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:46,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 627 [2024-11-06 19:45:46,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:47,141 INFO L225 Difference]: With dead ends: 284635 [2024-11-06 19:45:47,141 INFO L226 Difference]: Without dead ends: 153959 [2024-11-06 19:45:47,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:47,210 INFO L432 NwaCegarLoop]: 1265 mSDtfsCounter, 591 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:47,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1273 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-06 19:45:47,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153959 states. [2024-11-06 19:45:48,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153959 to 150204. [2024-11-06 19:45:48,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150204 states, 150203 states have (on average 1.066343548397835) internal successors, (160168), 150203 states have internal predecessors, (160168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:49,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150204 states to 150204 states and 160168 transitions. [2024-11-06 19:45:49,053 INFO L78 Accepts]: Start accepts. Automaton has 150204 states and 160168 transitions. Word has length 627 [2024-11-06 19:45:49,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:49,053 INFO L471 AbstractCegarLoop]: Abstraction has 150204 states and 160168 transitions. [2024-11-06 19:45:49,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:49,053 INFO L276 IsEmpty]: Start isEmpty. Operand 150204 states and 160168 transitions. [2024-11-06 19:45:49,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2024-11-06 19:45:49,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:49,069 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:45:49,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-06 19:45:49,069 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:49,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:49,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1855101814, now seen corresponding path program 1 times [2024-11-06 19:45:49,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:49,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464412262] [2024-11-06 19:45:49,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:49,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:49,816 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 822 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-06 19:45:49,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:49,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464412262] [2024-11-06 19:45:49,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464412262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:49,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:49,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:45:49,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143856774] [2024-11-06 19:45:49,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:49,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:45:49,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:49,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:45:49,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:49,818 INFO L87 Difference]: Start difference. First operand 150204 states and 160168 transitions. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:52,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:52,271 INFO L93 Difference]: Finished difference Result 309418 states and 329794 transitions. [2024-11-06 19:45:52,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:45:52,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 664 [2024-11-06 19:45:52,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:52,455 INFO L225 Difference]: With dead ends: 309418 [2024-11-06 19:45:52,455 INFO L226 Difference]: Without dead ends: 159967 [2024-11-06 19:45:52,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:45:52,533 INFO L432 NwaCegarLoop]: 1291 mSDtfsCounter, 605 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 2427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:52,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 1299 Invalid, 2427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 2155 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-06 19:45:52,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159967 states. [2024-11-06 19:45:54,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159967 to 153208. [2024-11-06 19:45:54,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153208 states, 153207 states have (on average 1.0651797894352086) internal successors, (163193), 153207 states have internal predecessors, (163193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:54,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153208 states to 153208 states and 163193 transitions. [2024-11-06 19:45:54,329 INFO L78 Accepts]: Start accepts. Automaton has 153208 states and 163193 transitions. Word has length 664 [2024-11-06 19:45:54,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:45:54,329 INFO L471 AbstractCegarLoop]: Abstraction has 153208 states and 163193 transitions. [2024-11-06 19:45:54,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:54,329 INFO L276 IsEmpty]: Start isEmpty. Operand 153208 states and 163193 transitions. [2024-11-06 19:45:54,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2024-11-06 19:45:54,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:45:54,341 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:45:54,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-06 19:45:54,342 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:45:54,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:45:54,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1178322779, now seen corresponding path program 1 times [2024-11-06 19:45:54,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:45:54,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893414364] [2024-11-06 19:45:54,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:45:54,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:45:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:45:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 1061 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-06 19:45:54,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:45:54,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893414364] [2024-11-06 19:45:54,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893414364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:45:54,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:45:54,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 19:45:54,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176579749] [2024-11-06 19:45:54,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:45:54,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 19:45:54,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:45:54,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 19:45:54,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:45:54,979 INFO L87 Difference]: Start difference. First operand 153208 states and 163193 transitions. Second operand has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:45:58,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:45:58,462 INFO L93 Difference]: Finished difference Result 316928 states and 337426 transitions. [2024-11-06 19:45:58,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 19:45:58,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 683 [2024-11-06 19:45:58,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:45:58,643 INFO L225 Difference]: With dead ends: 316928 [2024-11-06 19:45:58,643 INFO L226 Difference]: Without dead ends: 163722 [2024-11-06 19:45:58,713 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 19:45:58,713 INFO L432 NwaCegarLoop]: 1281 mSDtfsCounter, 1324 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3985 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 4249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 3985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-06 19:45:58,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 1295 Invalid, 4249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 3985 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-06 19:45:58,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163722 states. [2024-11-06 19:46:00,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163722 to 163722. [2024-11-06 19:46:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163722 states, 163721 states have (on average 1.0612200023210216) internal successors, (173744), 163721 states have internal predecessors, (173744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:46:00,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163722 states to 163722 states and 173744 transitions. [2024-11-06 19:46:00,669 INFO L78 Accepts]: Start accepts. Automaton has 163722 states and 173744 transitions. Word has length 683 [2024-11-06 19:46:00,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:46:00,669 INFO L471 AbstractCegarLoop]: Abstraction has 163722 states and 173744 transitions. [2024-11-06 19:46:00,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:46:00,669 INFO L276 IsEmpty]: Start isEmpty. Operand 163722 states and 173744 transitions. [2024-11-06 19:46:00,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2024-11-06 19:46:00,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:46:00,685 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:46:00,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-06 19:46:00,685 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:46:00,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:46:00,686 INFO L85 PathProgramCache]: Analyzing trace with hash 329507864, now seen corresponding path program 1 times [2024-11-06 19:46:00,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:46:00,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734500830] [2024-11-06 19:46:00,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:46:00,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:46:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:46:01,575 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 534 proven. 108 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-06 19:46:01,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:46:01,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734500830] [2024-11-06 19:46:01,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734500830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 19:46:01,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819171927] [2024-11-06 19:46:01,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:46:01,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:46:01,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:46:01,582 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 19:46:01,590 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 19:46:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:46:01,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 19:46:01,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 19:46:02,071 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 570 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2024-11-06 19:46:02,072 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 19:46:02,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819171927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:46:02,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 19:46:02,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-06 19:46:02,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084448213] [2024-11-06 19:46:02,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:46:02,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:46:02,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:46:02,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:46:02,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-06 19:46:02,074 INFO L87 Difference]: Start difference. First operand 163722 states and 173744 transitions. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)