/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 19:19:10,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 19:19:10,803 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-16 19:19:10,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 19:19:10,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 19:19:10,835 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 19:19:10,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 19:19:10,836 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 19:19:10,837 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 19:19:10,839 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 19:19:10,840 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 19:19:10,840 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 19:19:10,841 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 19:19:10,841 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 19:19:10,841 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 19:19:10,842 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 19:19:10,842 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 19:19:10,842 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 19:19:10,842 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 19:19:10,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 19:19:10,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 19:19:10,843 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 19:19:10,843 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 19:19:10,843 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 19:19:10,843 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 19:19:10,843 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 19:19:10,844 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 19:19:10,844 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 19:19:10,844 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 19:19:10,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:19:10,845 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 19:19:10,845 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 19:19:10,845 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 19:19:10,845 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 19:19:10,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 19:19:10,845 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 19:19:10,845 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 19:19:10,845 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 19:19:10,846 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 19:19:10,846 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 19:19:10,846 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 19:19:11,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 19:19:11,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 19:19:11,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 19:19:11,045 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 19:19:11,046 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 19:19:11,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c [2023-12-16 19:19:12,009 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 19:19:12,183 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 19:19:12,184 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c [2023-12-16 19:19:12,191 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00316ebe0/36cd2c04fd944a7a96fe81810ee848fd/FLAG86bafc0d4 [2023-12-16 19:19:12,202 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00316ebe0/36cd2c04fd944a7a96fe81810ee848fd [2023-12-16 19:19:12,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 19:19:12,205 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 19:19:12,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 19:19:12,205 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 19:19:12,209 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 19:19:12,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:19:12" (1/1) ... [2023-12-16 19:19:12,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c61fc65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:19:12, skipping insertion in model container [2023-12-16 19:19:12,210 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:19:12" (1/1) ... [2023-12-16 19:19:12,259 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 19:19:12,375 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c[1279,1292] [2023-12-16 19:19:12,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:19:12,529 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 19:19:12,536 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c[1279,1292] [2023-12-16 19:19:12,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:19:12,634 INFO L206 MainTranslator]: Completed translation [2023-12-16 19:19:12,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:19:12 WrapperNode [2023-12-16 19:19:12,634 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 19:19:12,635 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 19:19:12,635 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 19:19:12,635 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 19:19:12,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:19:12" (1/1) ... [2023-12-16 19:19:12,666 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:19:12" (1/1) ... [2023-12-16 19:19:12,815 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1535 [2023-12-16 19:19:12,815 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 19:19:12,816 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 19:19:12,816 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 19:19:12,816 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 19:19:12,823 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:19:12" (1/1) ... [2023-12-16 19:19:12,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:19:12" (1/1) ... [2023-12-16 19:19:12,844 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:19:12" (1/1) ... [2023-12-16 19:19:12,903 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]. [2023-12-16 19:19:12,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:19:12" (1/1) ... [2023-12-16 19:19:12,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:19:12" (1/1) ... [2023-12-16 19:19:12,942 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:19:12" (1/1) ... [2023-12-16 19:19:12,958 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:19:12" (1/1) ... [2023-12-16 19:19:12,970 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:19:12" (1/1) ... [2023-12-16 19:19:12,984 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:19:12" (1/1) ... [2023-12-16 19:19:13,003 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 19:19:13,004 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 19:19:13,004 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 19:19:13,005 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 19:19:13,005 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:19:12" (1/1) ... [2023-12-16 19:19:13,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:19:13,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:19:13,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 19:19:13,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 19:19:13,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 19:19:13,068 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 19:19:13,068 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 19:19:13,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 19:19:13,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 19:19:13,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 19:19:13,219 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 19:19:13,220 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 19:19:14,110 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 19:19:14,136 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 19:19:14,136 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 19:19:14,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:19:14 BoogieIcfgContainer [2023-12-16 19:19:14,137 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 19:19:14,138 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 19:19:14,138 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 19:19:14,140 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 19:19:14,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:19:12" (1/3) ... [2023-12-16 19:19:14,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af56ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:19:14, skipping insertion in model container [2023-12-16 19:19:14,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:19:12" (2/3) ... [2023-12-16 19:19:14,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af56ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:19:14, skipping insertion in model container [2023-12-16 19:19:14,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:19:14" (3/3) ... [2023-12-16 19:19:14,142 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c [2023-12-16 19:19:14,153 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 19:19:14,153 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 19:19:14,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 19:19:14,203 INFO L357 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, mHoare=true, 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;@7341e3ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 19:19:14,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 19:19:14,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 297 states, 291 states have (on average 1.6563573883161513) internal successors, (482), 292 states have internal predecessors, (482), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 19:19:14,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-16 19:19:14,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:14,218 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:14,219 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:14,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:14,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1078998386, now seen corresponding path program 1 times [2023-12-16 19:19:14,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:14,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746032419] [2023-12-16 19:19:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:14,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:14,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:14,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 19:19:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:14,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 19:19:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:14,531 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:19:14,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:14,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746032419] [2023-12-16 19:19:14,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746032419] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:14,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:14,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 19:19:14,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477061721] [2023-12-16 19:19:14,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:14,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 19:19:14,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:14,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 19:19:14,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 19:19:14,562 INFO L87 Difference]: Start difference. First operand has 297 states, 291 states have (on average 1.6563573883161513) internal successors, (482), 292 states have internal predecessors, (482), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 19:19:14,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:14,612 INFO L93 Difference]: Finished difference Result 540 states and 892 transitions. [2023-12-16 19:19:14,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 19:19:14,617 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 116 [2023-12-16 19:19:14,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:14,626 INFO L225 Difference]: With dead ends: 540 [2023-12-16 19:19:14,627 INFO L226 Difference]: Without dead ends: 295 [2023-12-16 19:19:14,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 19:19:14,632 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:14,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 482 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:14,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-12-16 19:19:14,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2023-12-16 19:19:14,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 290 states have (on average 1.6448275862068966) internal successors, (477), 290 states have internal predecessors, (477), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 19:19:14,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 483 transitions. [2023-12-16 19:19:14,683 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 483 transitions. Word has length 116 [2023-12-16 19:19:14,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:14,685 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 483 transitions. [2023-12-16 19:19:14,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 19:19:14,685 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 483 transitions. [2023-12-16 19:19:14,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-16 19:19:14,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:14,691 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:14,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 19:19:14,691 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:14,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:14,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1359904200, now seen corresponding path program 1 times [2023-12-16 19:19:14,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:14,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956459221] [2023-12-16 19:19:14,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:14,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:15,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:15,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 19:19:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:15,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 19:19:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:15,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:19:15,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:15,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956459221] [2023-12-16 19:19:15,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956459221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:15,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:15,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:19:15,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231158513] [2023-12-16 19:19:15,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:15,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:19:15,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:15,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:19:15,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:19:15,329 INFO L87 Difference]: Start difference. First operand 295 states and 483 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:15,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:15,376 INFO L93 Difference]: Finished difference Result 299 states and 487 transitions. [2023-12-16 19:19:15,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:15,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 116 [2023-12-16 19:19:15,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:15,379 INFO L225 Difference]: With dead ends: 299 [2023-12-16 19:19:15,379 INFO L226 Difference]: Without dead ends: 297 [2023-12-16 19:19:15,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:19:15,380 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:15,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1435 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:15,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-12-16 19:19:15,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2023-12-16 19:19:15,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 292 states have (on average 1.6404109589041096) internal successors, (479), 292 states have internal predecessors, (479), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 19:19:15,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 485 transitions. [2023-12-16 19:19:15,389 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 485 transitions. Word has length 116 [2023-12-16 19:19:15,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:15,390 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 485 transitions. [2023-12-16 19:19:15,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:15,391 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 485 transitions. [2023-12-16 19:19:15,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-16 19:19:15,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:15,394 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:15,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 19:19:15,394 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:15,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:15,395 INFO L85 PathProgramCache]: Analyzing trace with hash -790917242, now seen corresponding path program 1 times [2023-12-16 19:19:15,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:15,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773302124] [2023-12-16 19:19:15,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:15,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:15,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:15,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 19:19:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:15,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 19:19:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:19:15,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:15,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773302124] [2023-12-16 19:19:15,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773302124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:15,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:15,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:19:15,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446248443] [2023-12-16 19:19:15,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:15,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:19:15,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:15,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:19:15,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:15,790 INFO L87 Difference]: Start difference. First operand 297 states and 485 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:16,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:16,073 INFO L93 Difference]: Finished difference Result 752 states and 1222 transitions. [2023-12-16 19:19:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:19:16,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 117 [2023-12-16 19:19:16,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:16,075 INFO L225 Difference]: With dead ends: 752 [2023-12-16 19:19:16,075 INFO L226 Difference]: Without dead ends: 297 [2023-12-16 19:19:16,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:19:16,077 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 913 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:16,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 1411 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:19:16,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-12-16 19:19:16,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2023-12-16 19:19:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 292 states have (on average 1.6369863013698631) internal successors, (478), 292 states have internal predecessors, (478), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 19:19:16,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 484 transitions. [2023-12-16 19:19:16,085 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 484 transitions. Word has length 117 [2023-12-16 19:19:16,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:16,085 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 484 transitions. [2023-12-16 19:19:16,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:16,086 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 484 transitions. [2023-12-16 19:19:16,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-16 19:19:16,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:16,087 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:16,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 19:19:16,087 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:16,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:16,087 INFO L85 PathProgramCache]: Analyzing trace with hash 986526220, now seen corresponding path program 1 times [2023-12-16 19:19:16,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:16,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770735282] [2023-12-16 19:19:16,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:16,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:16,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:16,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 19:19:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:16,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 19:19:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:16,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:19:16,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:16,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770735282] [2023-12-16 19:19:16,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770735282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:16,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:16,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:19:16,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934132521] [2023-12-16 19:19:16,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:16,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:19:16,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:16,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:19:16,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:19:16,367 INFO L87 Difference]: Start difference. First operand 297 states and 484 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:16,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:16,391 INFO L93 Difference]: Finished difference Result 545 states and 886 transitions. [2023-12-16 19:19:16,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:16,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 118 [2023-12-16 19:19:16,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:16,395 INFO L225 Difference]: With dead ends: 545 [2023-12-16 19:19:16,395 INFO L226 Difference]: Without dead ends: 300 [2023-12-16 19:19:16,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:19:16,403 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 1 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:16,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1430 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:16,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-16 19:19:16,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 299. [2023-12-16 19:19:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 294 states have (on average 1.6326530612244898) internal successors, (480), 294 states have internal predecessors, (480), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 19:19:16,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 486 transitions. [2023-12-16 19:19:16,414 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 486 transitions. Word has length 118 [2023-12-16 19:19:16,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:16,416 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 486 transitions. [2023-12-16 19:19:16,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:16,416 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 486 transitions. [2023-12-16 19:19:16,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-16 19:19:16,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:16,417 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:16,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 19:19:16,418 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:16,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:16,418 INFO L85 PathProgramCache]: Analyzing trace with hash 307109852, now seen corresponding path program 1 times [2023-12-16 19:19:16,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:16,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160055275] [2023-12-16 19:19:16,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:16,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:16,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:16,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 19:19:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:16,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 19:19:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:16,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:19:16,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:16,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160055275] [2023-12-16 19:19:16,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160055275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:16,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:16,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:19:16,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911210548] [2023-12-16 19:19:16,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:16,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:19:16,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:16,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:19:16,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:19:16,806 INFO L87 Difference]: Start difference. First operand 299 states and 486 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:16,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:16,854 INFO L93 Difference]: Finished difference Result 546 states and 886 transitions. [2023-12-16 19:19:16,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:16,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 119 [2023-12-16 19:19:16,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:16,855 INFO L225 Difference]: With dead ends: 546 [2023-12-16 19:19:16,856 INFO L226 Difference]: Without dead ends: 299 [2023-12-16 19:19:16,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:16,856 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 396 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:16,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 928 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:16,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-16 19:19:16,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-12-16 19:19:16,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 294 states have (on average 1.629251700680272) internal successors, (479), 294 states have internal predecessors, (479), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 19:19:16,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 485 transitions. [2023-12-16 19:19:16,863 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 485 transitions. Word has length 119 [2023-12-16 19:19:16,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:16,863 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 485 transitions. [2023-12-16 19:19:16,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:16,864 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 485 transitions. [2023-12-16 19:19:16,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-16 19:19:16,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:16,864 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:16,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 19:19:16,865 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:16,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:16,865 INFO L85 PathProgramCache]: Analyzing trace with hash -602034372, now seen corresponding path program 1 times [2023-12-16 19:19:16,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:16,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741913391] [2023-12-16 19:19:16,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:16,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:17,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:17,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 19:19:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:17,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 19:19:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:17,105 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:19:17,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:17,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741913391] [2023-12-16 19:19:17,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741913391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:17,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:17,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:19:17,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999585789] [2023-12-16 19:19:17,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:17,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:19:17,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:17,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:19:17,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:17,107 INFO L87 Difference]: Start difference. First operand 299 states and 485 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:17,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:17,158 INFO L93 Difference]: Finished difference Result 546 states and 884 transitions. [2023-12-16 19:19:17,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:17,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 120 [2023-12-16 19:19:17,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:17,159 INFO L225 Difference]: With dead ends: 546 [2023-12-16 19:19:17,159 INFO L226 Difference]: Without dead ends: 299 [2023-12-16 19:19:17,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:17,160 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 471 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:17,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 934 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:17,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-16 19:19:17,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-12-16 19:19:17,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 294 states have (on average 1.6258503401360545) internal successors, (478), 294 states have internal predecessors, (478), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 19:19:17,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 484 transitions. [2023-12-16 19:19:17,168 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 484 transitions. Word has length 120 [2023-12-16 19:19:17,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:17,168 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 484 transitions. [2023-12-16 19:19:17,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:17,168 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 484 transitions. [2023-12-16 19:19:17,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-16 19:19:17,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:17,169 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:17,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 19:19:17,169 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:17,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:17,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1199198390, now seen corresponding path program 1 times [2023-12-16 19:19:17,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:17,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761367812] [2023-12-16 19:19:17,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:17,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:17,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:17,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 19:19:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:17,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 19:19:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:19:17,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:17,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761367812] [2023-12-16 19:19:17,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761367812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:17,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:17,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:19:17,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746290815] [2023-12-16 19:19:17,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:17,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:19:17,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:17,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:19:17,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:19:17,492 INFO L87 Difference]: Start difference. First operand 299 states and 484 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:17,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:17,548 INFO L93 Difference]: Finished difference Result 546 states and 882 transitions. [2023-12-16 19:19:17,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:17,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 121 [2023-12-16 19:19:17,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:17,550 INFO L225 Difference]: With dead ends: 546 [2023-12-16 19:19:17,550 INFO L226 Difference]: Without dead ends: 299 [2023-12-16 19:19:17,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:17,551 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 388 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:17,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 892 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:17,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-16 19:19:17,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-12-16 19:19:17,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 294 states have (on average 1.6224489795918366) internal successors, (477), 294 states have internal predecessors, (477), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 19:19:17,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 483 transitions. [2023-12-16 19:19:17,557 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 483 transitions. Word has length 121 [2023-12-16 19:19:17,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:17,557 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 483 transitions. [2023-12-16 19:19:17,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:17,557 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 483 transitions. [2023-12-16 19:19:17,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 19:19:17,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:17,558 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:17,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 19:19:17,558 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:17,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:17,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1836346922, now seen corresponding path program 1 times [2023-12-16 19:19:17,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:17,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974543547] [2023-12-16 19:19:17,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:17,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:17,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 19:19:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:17,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 19:19:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:19:17,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:17,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974543547] [2023-12-16 19:19:17,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974543547] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:17,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:17,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:19:17,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611709674] [2023-12-16 19:19:17,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:17,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:19:17,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:17,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:19:17,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:17,749 INFO L87 Difference]: Start difference. First operand 299 states and 483 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:17,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:17,811 INFO L93 Difference]: Finished difference Result 546 states and 880 transitions. [2023-12-16 19:19:17,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:17,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 122 [2023-12-16 19:19:17,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:17,813 INFO L225 Difference]: With dead ends: 546 [2023-12-16 19:19:17,814 INFO L226 Difference]: Without dead ends: 299 [2023-12-16 19:19:17,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:17,815 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 850 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:17,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 892 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:17,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-16 19:19:17,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-12-16 19:19:17,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 294 states have (on average 1.619047619047619) internal successors, (476), 294 states have internal predecessors, (476), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 19:19:17,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 482 transitions. [2023-12-16 19:19:17,822 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 482 transitions. Word has length 122 [2023-12-16 19:19:17,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:17,823 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 482 transitions. [2023-12-16 19:19:17,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:17,823 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 482 transitions. [2023-12-16 19:19:17,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-16 19:19:17,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:17,824 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:17,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 19:19:17,824 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:17,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:17,825 INFO L85 PathProgramCache]: Analyzing trace with hash 170210960, now seen corresponding path program 1 times [2023-12-16 19:19:17,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:17,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548697368] [2023-12-16 19:19:17,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:17,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:18,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:18,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 19:19:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:18,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 19:19:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:19:18,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:18,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548697368] [2023-12-16 19:19:18,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548697368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:18,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:18,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:19:18,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401271368] [2023-12-16 19:19:18,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:18,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:19:18,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:18,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:19:18,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:18,040 INFO L87 Difference]: Start difference. First operand 299 states and 482 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:18,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:18,106 INFO L93 Difference]: Finished difference Result 546 states and 878 transitions. [2023-12-16 19:19:18,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:18,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 123 [2023-12-16 19:19:18,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:18,107 INFO L225 Difference]: With dead ends: 546 [2023-12-16 19:19:18,107 INFO L226 Difference]: Without dead ends: 299 [2023-12-16 19:19:18,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:18,109 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 465 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:18,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 898 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:18,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-16 19:19:18,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-12-16 19:19:18,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 294 states have (on average 1.6156462585034013) internal successors, (475), 294 states have internal predecessors, (475), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 19:19:18,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 481 transitions. [2023-12-16 19:19:18,115 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 481 transitions. Word has length 123 [2023-12-16 19:19:18,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:18,116 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 481 transitions. [2023-12-16 19:19:18,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:18,116 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 481 transitions. [2023-12-16 19:19:18,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 19:19:18,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:18,117 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:18,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 19:19:18,117 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:18,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:18,118 INFO L85 PathProgramCache]: Analyzing trace with hash -136472208, now seen corresponding path program 1 times [2023-12-16 19:19:18,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:18,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12581063] [2023-12-16 19:19:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:18,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:18,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:18,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 19:19:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:18,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 19:19:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:19:18,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:18,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12581063] [2023-12-16 19:19:18,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12581063] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:18,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:18,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:19:18,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331695630] [2023-12-16 19:19:18,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:18,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:19:18,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:18,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:19:18,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:18,355 INFO L87 Difference]: Start difference. First operand 299 states and 481 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:18,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:18,419 INFO L93 Difference]: Finished difference Result 546 states and 876 transitions. [2023-12-16 19:19:18,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:18,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 124 [2023-12-16 19:19:18,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:18,421 INFO L225 Difference]: With dead ends: 546 [2023-12-16 19:19:18,421 INFO L226 Difference]: Without dead ends: 299 [2023-12-16 19:19:18,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:18,422 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 461 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:18,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 898 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:18,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-16 19:19:18,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-12-16 19:19:18,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 294 states have (on average 1.6122448979591837) internal successors, (474), 294 states have internal predecessors, (474), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 19:19:18,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 480 transitions. [2023-12-16 19:19:18,429 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 480 transitions. Word has length 124 [2023-12-16 19:19:18,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:18,430 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 480 transitions. [2023-12-16 19:19:18,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:18,430 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 480 transitions. [2023-12-16 19:19:18,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-16 19:19:18,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:18,431 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:18,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 19:19:18,432 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:18,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:18,432 INFO L85 PathProgramCache]: Analyzing trace with hash -792506006, now seen corresponding path program 1 times [2023-12-16 19:19:18,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:18,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383856283] [2023-12-16 19:19:18,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:18,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:18,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:18,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 19:19:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:18,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 19:19:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:18,687 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:19:18,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:18,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383856283] [2023-12-16 19:19:18,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383856283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:18,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:18,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:19:18,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904381651] [2023-12-16 19:19:18,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:18,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:19:18,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:18,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:19:18,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:19:18,689 INFO L87 Difference]: Start difference. First operand 299 states and 480 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 19:19:18,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:18,729 INFO L93 Difference]: Finished difference Result 546 states and 874 transitions. [2023-12-16 19:19:18,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:18,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 125 [2023-12-16 19:19:18,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:18,730 INFO L225 Difference]: With dead ends: 546 [2023-12-16 19:19:18,731 INFO L226 Difference]: Without dead ends: 299 [2023-12-16 19:19:18,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:18,731 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 427 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:18,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 926 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:18,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-16 19:19:18,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-12-16 19:19:18,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 294 states have (on average 1.6088435374149659) internal successors, (473), 294 states have internal predecessors, (473), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 19:19:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 479 transitions. [2023-12-16 19:19:18,738 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 479 transitions. Word has length 125 [2023-12-16 19:19:18,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:18,738 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 479 transitions. [2023-12-16 19:19:18,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 19:19:18,738 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 479 transitions. [2023-12-16 19:19:18,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-16 19:19:18,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:18,739 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:18,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 19:19:18,739 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:18,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:18,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1996412576, now seen corresponding path program 1 times [2023-12-16 19:19:18,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:18,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351185832] [2023-12-16 19:19:18,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:18,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:19,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:19,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 19:19:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:19,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 19:19:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:19:19,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:19,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351185832] [2023-12-16 19:19:19,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351185832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:19,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:19,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:19:19,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204148147] [2023-12-16 19:19:19,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:19,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:19:19,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:19,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:19:19,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:19,125 INFO L87 Difference]: Start difference. First operand 299 states and 479 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:19,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:19,207 INFO L93 Difference]: Finished difference Result 546 states and 872 transitions. [2023-12-16 19:19:19,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:19,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 126 [2023-12-16 19:19:19,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:19,209 INFO L225 Difference]: With dead ends: 546 [2023-12-16 19:19:19,209 INFO L226 Difference]: Without dead ends: 299 [2023-12-16 19:19:19,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:19,210 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 381 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:19,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1330 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:19:19,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-16 19:19:19,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-12-16 19:19:19,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 294 states have (on average 1.6054421768707483) internal successors, (472), 294 states have internal predecessors, (472), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 19:19:19,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 478 transitions. [2023-12-16 19:19:19,218 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 478 transitions. Word has length 126 [2023-12-16 19:19:19,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:19,218 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 478 transitions. [2023-12-16 19:19:19,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:19,218 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 478 transitions. [2023-12-16 19:19:19,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-16 19:19:19,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:19,219 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:19,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 19:19:19,219 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:19,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:19,220 INFO L85 PathProgramCache]: Analyzing trace with hash 190974242, now seen corresponding path program 1 times [2023-12-16 19:19:19,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:19,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946921608] [2023-12-16 19:19:19,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:19,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:19,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:19,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 19:19:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:19,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 19:19:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:19:19,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:19,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946921608] [2023-12-16 19:19:19,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946921608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:19,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:19,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:19:19,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886975803] [2023-12-16 19:19:19,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:19,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:19:19,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:19,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:19:19,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:19,565 INFO L87 Difference]: Start difference. First operand 299 states and 478 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:19,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:19,639 INFO L93 Difference]: Finished difference Result 546 states and 870 transitions. [2023-12-16 19:19:19,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:19,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 126 [2023-12-16 19:19:19,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:19,641 INFO L225 Difference]: With dead ends: 546 [2023-12-16 19:19:19,641 INFO L226 Difference]: Without dead ends: 299 [2023-12-16 19:19:19,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:19,642 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 378 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:19,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 896 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:19,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-16 19:19:19,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-12-16 19:19:19,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 294 states have (on average 1.6020408163265305) internal successors, (471), 294 states have internal predecessors, (471), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 19:19:19,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 477 transitions. [2023-12-16 19:19:19,648 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 477 transitions. Word has length 126 [2023-12-16 19:19:19,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:19,648 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 477 transitions. [2023-12-16 19:19:19,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:19,649 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 477 transitions. [2023-12-16 19:19:19,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-16 19:19:19,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:19,649 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:19,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 19:19:19,650 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:19,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:19,650 INFO L85 PathProgramCache]: Analyzing trace with hash -626674208, now seen corresponding path program 1 times [2023-12-16 19:19:19,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:19,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040426466] [2023-12-16 19:19:19,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:19,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:19,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:19,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 19:19:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:19,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 19:19:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:19,964 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:19:19,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:19,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040426466] [2023-12-16 19:19:19,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040426466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:19,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:19,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:19:19,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214510524] [2023-12-16 19:19:19,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:19,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:19:19,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:19,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:19:19,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:19,966 INFO L87 Difference]: Start difference. First operand 299 states and 477 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:20,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:20,042 INFO L93 Difference]: Finished difference Result 546 states and 868 transitions. [2023-12-16 19:19:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:20,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 126 [2023-12-16 19:19:20,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:20,043 INFO L225 Difference]: With dead ends: 546 [2023-12-16 19:19:20,043 INFO L226 Difference]: Without dead ends: 299 [2023-12-16 19:19:20,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:20,044 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 748 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:20,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 890 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:19:20,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-16 19:19:20,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-12-16 19:19:20,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 294 states have (on average 1.598639455782313) internal successors, (470), 294 states have internal predecessors, (470), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 19:19:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 476 transitions. [2023-12-16 19:19:20,051 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 476 transitions. Word has length 126 [2023-12-16 19:19:20,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:20,051 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 476 transitions. [2023-12-16 19:19:20,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 476 transitions. [2023-12-16 19:19:20,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-16 19:19:20,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:20,052 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:20,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 19:19:20,053 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:20,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:20,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2079945186, now seen corresponding path program 1 times [2023-12-16 19:19:20,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:20,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309453877] [2023-12-16 19:19:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:20,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:20,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:20,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 19:19:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:20,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 19:19:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:19:20,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:20,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309453877] [2023-12-16 19:19:20,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309453877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:20,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:20,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:19:20,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697495897] [2023-12-16 19:19:20,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:20,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:19:20,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:20,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:19:20,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:19:20,261 INFO L87 Difference]: Start difference. First operand 299 states and 476 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 19:19:20,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:20,302 INFO L93 Difference]: Finished difference Result 546 states and 866 transitions. [2023-12-16 19:19:20,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:20,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 126 [2023-12-16 19:19:20,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:20,303 INFO L225 Difference]: With dead ends: 546 [2023-12-16 19:19:20,303 INFO L226 Difference]: Without dead ends: 299 [2023-12-16 19:19:20,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:20,304 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 421 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:20,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 920 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:20,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-16 19:19:20,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-12-16 19:19:20,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 294 states have (on average 1.5952380952380953) internal successors, (469), 294 states have internal predecessors, (469), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 19:19:20,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 475 transitions. [2023-12-16 19:19:20,311 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 475 transitions. Word has length 126 [2023-12-16 19:19:20,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:20,311 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 475 transitions. [2023-12-16 19:19:20,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 19:19:20,311 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 475 transitions. [2023-12-16 19:19:20,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-16 19:19:20,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:20,312 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:20,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 19:19:20,312 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:20,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:20,312 INFO L85 PathProgramCache]: Analyzing trace with hash 2107010788, now seen corresponding path program 1 times [2023-12-16 19:19:20,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:20,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338620865] [2023-12-16 19:19:20,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:20,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:20,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:20,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 19:19:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:20,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 19:19:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:19:20,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:20,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338620865] [2023-12-16 19:19:20,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338620865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:20,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:20,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:19:20,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115917589] [2023-12-16 19:19:20,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:20,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:19:20,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:20,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:19:20,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:19:20,557 INFO L87 Difference]: Start difference. First operand 299 states and 475 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:20,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:20,602 INFO L93 Difference]: Finished difference Result 546 states and 864 transitions. [2023-12-16 19:19:20,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:20,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 126 [2023-12-16 19:19:20,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:20,603 INFO L225 Difference]: With dead ends: 546 [2023-12-16 19:19:20,603 INFO L226 Difference]: Without dead ends: 299 [2023-12-16 19:19:20,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:20,604 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 382 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:20,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 910 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:20,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-16 19:19:20,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-12-16 19:19:20,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 294 states have (on average 1.5918367346938775) internal successors, (468), 294 states have internal predecessors, (468), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 19:19:20,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 474 transitions. [2023-12-16 19:19:20,611 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 474 transitions. Word has length 126 [2023-12-16 19:19:20,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:20,612 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 474 transitions. [2023-12-16 19:19:20,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:20,612 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 474 transitions. [2023-12-16 19:19:20,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-16 19:19:20,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:20,613 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:20,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 19:19:20,613 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:20,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:20,613 INFO L85 PathProgramCache]: Analyzing trace with hash -801753114, now seen corresponding path program 1 times [2023-12-16 19:19:20,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:20,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023672133] [2023-12-16 19:19:20,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:20,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:20,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:20,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 19:19:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:20,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 19:19:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:20,893 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:19:20,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:20,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023672133] [2023-12-16 19:19:20,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023672133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:20,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:20,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:19:20,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418226920] [2023-12-16 19:19:20,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:20,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:19:20,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:20,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:19:20,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:19:20,895 INFO L87 Difference]: Start difference. First operand 299 states and 474 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:21,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:21,027 INFO L93 Difference]: Finished difference Result 548 states and 864 transitions. [2023-12-16 19:19:21,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:19:21,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 126 [2023-12-16 19:19:21,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:21,029 INFO L225 Difference]: With dead ends: 548 [2023-12-16 19:19:21,029 INFO L226 Difference]: Without dead ends: 299 [2023-12-16 19:19:21,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:21,029 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 4 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:21,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1277 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:19:21,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-16 19:19:21,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-12-16 19:19:21,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 294 states have (on average 1.58843537414966) internal successors, (467), 294 states have internal predecessors, (467), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 19:19:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 473 transitions. [2023-12-16 19:19:21,036 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 473 transitions. Word has length 126 [2023-12-16 19:19:21,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:21,036 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 473 transitions. [2023-12-16 19:19:21,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:21,037 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 473 transitions. [2023-12-16 19:19:21,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-16 19:19:21,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:21,037 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:21,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 19:19:21,038 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:21,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:21,038 INFO L85 PathProgramCache]: Analyzing trace with hash -186832874, now seen corresponding path program 1 times [2023-12-16 19:19:21,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:21,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21494670] [2023-12-16 19:19:21,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:21,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:21,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:21,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 19:19:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:21,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 19:19:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:19:21,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:21,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21494670] [2023-12-16 19:19:21,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21494670] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:21,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:21,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:19:21,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865779332] [2023-12-16 19:19:21,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:21,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:19:21,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:21,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:19:21,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:21,665 INFO L87 Difference]: Start difference. First operand 299 states and 473 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:21,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:21,789 INFO L93 Difference]: Finished difference Result 872 states and 1369 transitions. [2023-12-16 19:19:21,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:19:21,789 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 127 [2023-12-16 19:19:21,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:21,791 INFO L225 Difference]: With dead ends: 872 [2023-12-16 19:19:21,791 INFO L226 Difference]: Without dead ends: 625 [2023-12-16 19:19:21,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-16 19:19:21,792 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 1950 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1953 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:21,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1953 Valid, 1967 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:19:21,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2023-12-16 19:19:21,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 391. [2023-12-16 19:19:21,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 383 states have (on average 1.5613577023498695) internal successors, (598), 383 states have internal predecessors, (598), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 19:19:21,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 610 transitions. [2023-12-16 19:19:21,807 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 610 transitions. Word has length 127 [2023-12-16 19:19:21,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:21,807 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 610 transitions. [2023-12-16 19:19:21,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:21,807 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 610 transitions. [2023-12-16 19:19:21,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2023-12-16 19:19:21,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:21,810 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:21,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 19:19:21,810 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:21,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:21,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1486298518, now seen corresponding path program 1 times [2023-12-16 19:19:21,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:21,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678342692] [2023-12-16 19:19:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:21,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:22,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:22,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 19:19:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:22,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 19:19:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:22,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-12-16 19:19:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:22,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-16 19:19:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:22,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-16 19:19:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:22,364 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 19:19:22,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:22,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678342692] [2023-12-16 19:19:22,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678342692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:22,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:22,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:19:22,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493820103] [2023-12-16 19:19:22,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:22,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:19:22,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:22,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:19:22,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:22,366 INFO L87 Difference]: Start difference. First operand 391 states and 610 transitions. Second operand has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:22,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:22,424 INFO L93 Difference]: Finished difference Result 638 states and 997 transitions. [2023-12-16 19:19:22,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:22,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 309 [2023-12-16 19:19:22,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:22,426 INFO L225 Difference]: With dead ends: 638 [2023-12-16 19:19:22,426 INFO L226 Difference]: Without dead ends: 391 [2023-12-16 19:19:22,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:22,427 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 426 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:22,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 890 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:22,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-16 19:19:22,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2023-12-16 19:19:22,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 383 states have (on average 1.558746736292428) internal successors, (597), 383 states have internal predecessors, (597), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 19:19:22,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 609 transitions. [2023-12-16 19:19:22,439 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 609 transitions. Word has length 309 [2023-12-16 19:19:22,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:22,440 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 609 transitions. [2023-12-16 19:19:22,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:22,440 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 609 transitions. [2023-12-16 19:19:22,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-12-16 19:19:22,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:22,443 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:22,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 19:19:22,443 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:22,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:22,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1863575638, now seen corresponding path program 1 times [2023-12-16 19:19:22,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:22,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998951256] [2023-12-16 19:19:22,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:22,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:22,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:22,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 19:19:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:22,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 19:19:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:22,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-16 19:19:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:22,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-12-16 19:19:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:22,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-12-16 19:19:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:22,927 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 19:19:22,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:22,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998951256] [2023-12-16 19:19:22,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998951256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:22,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:22,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:19:22,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394468298] [2023-12-16 19:19:22,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:22,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:19:22,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:22,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:19:22,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:22,930 INFO L87 Difference]: Start difference. First operand 391 states and 609 transitions. Second operand has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:22,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:22,987 INFO L93 Difference]: Finished difference Result 638 states and 995 transitions. [2023-12-16 19:19:22,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:22,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 310 [2023-12-16 19:19:22,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:22,990 INFO L225 Difference]: With dead ends: 638 [2023-12-16 19:19:22,990 INFO L226 Difference]: Without dead ends: 391 [2023-12-16 19:19:22,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:22,991 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 418 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:22,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 890 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:22,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-16 19:19:23,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2023-12-16 19:19:23,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 383 states have (on average 1.556135770234987) internal successors, (596), 383 states have internal predecessors, (596), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 19:19:23,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 608 transitions. [2023-12-16 19:19:23,009 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 608 transitions. Word has length 310 [2023-12-16 19:19:23,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:23,009 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 608 transitions. [2023-12-16 19:19:23,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 608 transitions. [2023-12-16 19:19:23,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-12-16 19:19:23,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:23,011 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:23,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 19:19:23,012 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:23,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:23,012 INFO L85 PathProgramCache]: Analyzing trace with hash 372564790, now seen corresponding path program 1 times [2023-12-16 19:19:23,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:23,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603887651] [2023-12-16 19:19:23,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:23,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:23,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:23,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 19:19:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:23,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 19:19:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:23,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-12-16 19:19:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:23,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-16 19:19:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:23,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 19:19:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:23,549 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 19:19:23,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:23,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603887651] [2023-12-16 19:19:23,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603887651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:23,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:23,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:19:23,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359051152] [2023-12-16 19:19:23,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:23,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:19:23,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:23,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:19:23,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:23,552 INFO L87 Difference]: Start difference. First operand 391 states and 608 transitions. Second operand has 5 states, 5 states have (on average 56.8) internal successors, (284), 5 states have internal predecessors, (284), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:23,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:23,612 INFO L93 Difference]: Finished difference Result 638 states and 993 transitions. [2023-12-16 19:19:23,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:23,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 56.8) internal successors, (284), 5 states have internal predecessors, (284), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 311 [2023-12-16 19:19:23,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:23,614 INFO L225 Difference]: With dead ends: 638 [2023-12-16 19:19:23,614 INFO L226 Difference]: Without dead ends: 391 [2023-12-16 19:19:23,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:23,616 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 410 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:23,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 890 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:23,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-16 19:19:23,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2023-12-16 19:19:23,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 383 states have (on average 1.5535248041775458) internal successors, (595), 383 states have internal predecessors, (595), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 19:19:23,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 607 transitions. [2023-12-16 19:19:23,629 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 607 transitions. Word has length 311 [2023-12-16 19:19:23,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:23,629 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 607 transitions. [2023-12-16 19:19:23,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.8) internal successors, (284), 5 states have internal predecessors, (284), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:23,629 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 607 transitions. [2023-12-16 19:19:23,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2023-12-16 19:19:23,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:23,632 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:23,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 19:19:23,632 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:23,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:23,632 INFO L85 PathProgramCache]: Analyzing trace with hash -342234970, now seen corresponding path program 1 times [2023-12-16 19:19:23,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:23,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219085727] [2023-12-16 19:19:23,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:23,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:24,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:24,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 19:19:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:24,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 19:19:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:24,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-12-16 19:19:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:24,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-16 19:19:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:24,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-12-16 19:19:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:24,124 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 19:19:24,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:24,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219085727] [2023-12-16 19:19:24,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219085727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:24,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:24,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:19:24,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488498125] [2023-12-16 19:19:24,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:24,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:19:24,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:24,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:19:24,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:24,126 INFO L87 Difference]: Start difference. First operand 391 states and 607 transitions. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:24,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:24,183 INFO L93 Difference]: Finished difference Result 638 states and 991 transitions. [2023-12-16 19:19:24,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:24,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 312 [2023-12-16 19:19:24,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:24,185 INFO L225 Difference]: With dead ends: 638 [2023-12-16 19:19:24,186 INFO L226 Difference]: Without dead ends: 391 [2023-12-16 19:19:24,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:24,187 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 714 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:24,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 884 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:24,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-16 19:19:24,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2023-12-16 19:19:24,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 383 states have (on average 1.5509138381201044) internal successors, (594), 383 states have internal predecessors, (594), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 19:19:24,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 606 transitions. [2023-12-16 19:19:24,199 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 606 transitions. Word has length 312 [2023-12-16 19:19:24,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:24,199 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 606 transitions. [2023-12-16 19:19:24,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:24,199 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 606 transitions. [2023-12-16 19:19:24,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-12-16 19:19:24,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:24,201 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:24,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 19:19:24,202 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:24,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:24,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1107896516, now seen corresponding path program 1 times [2023-12-16 19:19:24,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:24,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453177298] [2023-12-16 19:19:24,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:24,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:24,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:24,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 19:19:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:24,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 19:19:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:24,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-16 19:19:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:24,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-16 19:19:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:24,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-16 19:19:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:24,698 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 19:19:24,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:24,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453177298] [2023-12-16 19:19:24,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453177298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:24,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:24,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:19:24,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261384335] [2023-12-16 19:19:24,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:24,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:19:24,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:24,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:19:24,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:24,700 INFO L87 Difference]: Start difference. First operand 391 states and 606 transitions. Second operand has 5 states, 5 states have (on average 57.2) internal successors, (286), 5 states have internal predecessors, (286), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:24,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:24,746 INFO L93 Difference]: Finished difference Result 638 states and 989 transitions. [2023-12-16 19:19:24,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:24,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.2) internal successors, (286), 5 states have internal predecessors, (286), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 313 [2023-12-16 19:19:24,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:24,748 INFO L225 Difference]: With dead ends: 638 [2023-12-16 19:19:24,748 INFO L226 Difference]: Without dead ends: 391 [2023-12-16 19:19:24,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:24,750 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 692 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:24,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 900 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:24,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-16 19:19:24,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2023-12-16 19:19:24,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 383 states have (on average 1.5483028720626633) internal successors, (593), 383 states have internal predecessors, (593), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 19:19:24,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 605 transitions. [2023-12-16 19:19:24,761 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 605 transitions. Word has length 313 [2023-12-16 19:19:24,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:24,762 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 605 transitions. [2023-12-16 19:19:24,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.2) internal successors, (286), 5 states have internal predecessors, (286), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:24,762 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 605 transitions. [2023-12-16 19:19:24,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-12-16 19:19:24,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:24,764 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:24,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-16 19:19:24,764 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:24,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:24,765 INFO L85 PathProgramCache]: Analyzing trace with hash 787072628, now seen corresponding path program 1 times [2023-12-16 19:19:24,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:24,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005090065] [2023-12-16 19:19:24,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:24,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:25,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:25,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 19:19:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:25,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 19:19:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:25,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-16 19:19:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:25,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-12-16 19:19:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:25,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-12-16 19:19:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:25,241 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 19:19:25,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:25,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005090065] [2023-12-16 19:19:25,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005090065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:25,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:25,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:19:25,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668489245] [2023-12-16 19:19:25,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:25,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:19:25,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:25,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:19:25,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:25,244 INFO L87 Difference]: Start difference. First operand 391 states and 605 transitions. Second operand has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:25,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:25,284 INFO L93 Difference]: Finished difference Result 638 states and 987 transitions. [2023-12-16 19:19:25,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:25,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 314 [2023-12-16 19:19:25,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:25,286 INFO L225 Difference]: With dead ends: 638 [2023-12-16 19:19:25,286 INFO L226 Difference]: Without dead ends: 391 [2023-12-16 19:19:25,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:25,287 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 380 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:25,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 906 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:25,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-16 19:19:25,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2023-12-16 19:19:25,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 383 states have (on average 1.5456919060052219) internal successors, (592), 383 states have internal predecessors, (592), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 19:19:25,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 604 transitions. [2023-12-16 19:19:25,301 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 604 transitions. Word has length 314 [2023-12-16 19:19:25,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:25,301 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 604 transitions. [2023-12-16 19:19:25,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:25,302 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 604 transitions. [2023-12-16 19:19:25,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-12-16 19:19:25,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:25,304 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:25,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-16 19:19:25,304 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:25,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:25,305 INFO L85 PathProgramCache]: Analyzing trace with hash 624313872, now seen corresponding path program 1 times [2023-12-16 19:19:25,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:25,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029179078] [2023-12-16 19:19:25,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:25,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:25,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:25,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 19:19:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:25,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 19:19:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:25,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-16 19:19:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:25,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-12-16 19:19:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:25,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-16 19:19:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 19:19:25,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:25,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029179078] [2023-12-16 19:19:25,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029179078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:25,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:25,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:19:25,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578519135] [2023-12-16 19:19:25,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:25,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:19:25,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:25,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:19:25,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:25,851 INFO L87 Difference]: Start difference. First operand 391 states and 604 transitions. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:26,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:26,028 INFO L93 Difference]: Finished difference Result 638 states and 985 transitions. [2023-12-16 19:19:26,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:26,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 315 [2023-12-16 19:19:26,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:26,030 INFO L225 Difference]: With dead ends: 638 [2023-12-16 19:19:26,030 INFO L226 Difference]: Without dead ends: 391 [2023-12-16 19:19:26,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:26,031 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 654 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:26,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 674 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:19:26,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-16 19:19:26,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2023-12-16 19:19:26,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 383 states have (on average 1.5430809399477807) internal successors, (591), 383 states have internal predecessors, (591), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 19:19:26,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 603 transitions. [2023-12-16 19:19:26,047 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 603 transitions. Word has length 315 [2023-12-16 19:19:26,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:26,048 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 603 transitions. [2023-12-16 19:19:26,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:26,048 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 603 transitions. [2023-12-16 19:19:26,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-12-16 19:19:26,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:26,051 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:26,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-16 19:19:26,051 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:26,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:26,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1824240060, now seen corresponding path program 1 times [2023-12-16 19:19:26,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:26,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2386938] [2023-12-16 19:19:26,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:26,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:27,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:27,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 19:19:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:27,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 19:19:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:27,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 19:19:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:27,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-16 19:19:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:27,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-16 19:19:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 19:19:27,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:27,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2386938] [2023-12-16 19:19:27,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2386938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:27,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:27,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:19:27,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804026716] [2023-12-16 19:19:27,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:27,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:19:27,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:27,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:19:27,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:27,054 INFO L87 Difference]: Start difference. First operand 391 states and 603 transitions. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:27,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:27,131 INFO L93 Difference]: Finished difference Result 638 states and 983 transitions. [2023-12-16 19:19:27,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:27,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 316 [2023-12-16 19:19:27,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:27,133 INFO L225 Difference]: With dead ends: 638 [2023-12-16 19:19:27,133 INFO L226 Difference]: Without dead ends: 391 [2023-12-16 19:19:27,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:27,134 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 365 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:27,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 884 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:27,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-16 19:19:27,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2023-12-16 19:19:27,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 383 states have (on average 1.5404699738903394) internal successors, (590), 383 states have internal predecessors, (590), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 19:19:27,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 602 transitions. [2023-12-16 19:19:27,147 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 602 transitions. Word has length 316 [2023-12-16 19:19:27,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:27,147 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 602 transitions. [2023-12-16 19:19:27,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:27,147 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 602 transitions. [2023-12-16 19:19:27,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-12-16 19:19:27,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:27,149 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:27,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-16 19:19:27,150 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:27,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:27,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1253968254, now seen corresponding path program 1 times [2023-12-16 19:19:27,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:27,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041970446] [2023-12-16 19:19:27,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:27,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:28,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:28,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 19:19:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:28,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 19:19:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:28,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 19:19:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:28,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-16 19:19:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:28,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-16 19:19:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:28,170 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 19:19:28,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:28,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041970446] [2023-12-16 19:19:28,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041970446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:28,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:28,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:19:28,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821947699] [2023-12-16 19:19:28,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:28,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:19:28,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:28,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:19:28,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:19:28,172 INFO L87 Difference]: Start difference. First operand 391 states and 602 transitions. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:28,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:28,229 INFO L93 Difference]: Finished difference Result 638 states and 981 transitions. [2023-12-16 19:19:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:28,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 316 [2023-12-16 19:19:28,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:28,231 INFO L225 Difference]: With dead ends: 638 [2023-12-16 19:19:28,231 INFO L226 Difference]: Without dead ends: 391 [2023-12-16 19:19:28,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:28,232 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 308 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:28,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 878 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:28,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-16 19:19:28,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2023-12-16 19:19:28,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 383 states have (on average 1.5378590078328982) internal successors, (589), 383 states have internal predecessors, (589), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 19:19:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 601 transitions. [2023-12-16 19:19:28,244 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 601 transitions. Word has length 316 [2023-12-16 19:19:28,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:28,245 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 601 transitions. [2023-12-16 19:19:28,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 601 transitions. [2023-12-16 19:19:28,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-12-16 19:19:28,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:28,247 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:28,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-16 19:19:28,247 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:28,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:28,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1271527428, now seen corresponding path program 1 times [2023-12-16 19:19:28,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:28,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428512044] [2023-12-16 19:19:28,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:28,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:29,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:29,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 19:19:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:29,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 19:19:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:29,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 19:19:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:29,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-16 19:19:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:29,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-16 19:19:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:29,240 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 19:19:29,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:29,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428512044] [2023-12-16 19:19:29,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428512044] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:29,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:29,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:19:29,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211614785] [2023-12-16 19:19:29,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:29,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:19:29,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:29,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:19:29,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:29,242 INFO L87 Difference]: Start difference. First operand 391 states and 601 transitions. Second operand has 6 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:29,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:29,618 INFO L93 Difference]: Finished difference Result 957 states and 1474 transitions. [2023-12-16 19:19:29,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:19:29,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 316 [2023-12-16 19:19:29,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:29,621 INFO L225 Difference]: With dead ends: 957 [2023-12-16 19:19:29,621 INFO L226 Difference]: Without dead ends: 710 [2023-12-16 19:19:29,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:19:29,622 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 311 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2054 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:29,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 2054 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 19:19:29,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2023-12-16 19:19:29,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 604. [2023-12-16 19:19:29,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 593 states have (on average 1.5311973018549747) internal successors, (908), 593 states have internal predecessors, (908), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-16 19:19:29,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 926 transitions. [2023-12-16 19:19:29,641 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 926 transitions. Word has length 316 [2023-12-16 19:19:29,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:29,641 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 926 transitions. [2023-12-16 19:19:29,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:29,641 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 926 transitions. [2023-12-16 19:19:29,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-12-16 19:19:29,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:29,644 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:29,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-16 19:19:29,645 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:29,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:29,645 INFO L85 PathProgramCache]: Analyzing trace with hash 746302368, now seen corresponding path program 1 times [2023-12-16 19:19:29,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:29,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878991567] [2023-12-16 19:19:29,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:29,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:30,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:30,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 19:19:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:30,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 19:19:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:30,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 19:19:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:30,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-12-16 19:19:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:30,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-12-16 19:19:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 19:19:30,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:30,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878991567] [2023-12-16 19:19:30,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878991567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:30,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:30,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:19:30,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756907816] [2023-12-16 19:19:30,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:30,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:19:30,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:30,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:19:30,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:30,747 INFO L87 Difference]: Start difference. First operand 604 states and 926 transitions. Second operand has 6 states, 6 states have (on average 48.333333333333336) internal successors, (290), 6 states have internal predecessors, (290), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:31,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:31,110 INFO L93 Difference]: Finished difference Result 889 states and 1367 transitions. [2023-12-16 19:19:31,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:19:31,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 48.333333333333336) internal successors, (290), 6 states have internal predecessors, (290), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 317 [2023-12-16 19:19:31,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:31,112 INFO L225 Difference]: With dead ends: 889 [2023-12-16 19:19:31,113 INFO L226 Difference]: Without dead ends: 642 [2023-12-16 19:19:31,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:19:31,113 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 651 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:31,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1322 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 19:19:31,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-12-16 19:19:31,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 605. [2023-12-16 19:19:31,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 594 states have (on average 1.5303030303030303) internal successors, (909), 594 states have internal predecessors, (909), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-16 19:19:31,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 927 transitions. [2023-12-16 19:19:31,131 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 927 transitions. Word has length 317 [2023-12-16 19:19:31,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:31,131 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 927 transitions. [2023-12-16 19:19:31,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.333333333333336) internal successors, (290), 6 states have internal predecessors, (290), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:31,132 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 927 transitions. [2023-12-16 19:19:31,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-12-16 19:19:31,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:31,134 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:31,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-16 19:19:31,134 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:31,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:31,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1096173346, now seen corresponding path program 1 times [2023-12-16 19:19:31,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:31,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760989591] [2023-12-16 19:19:31,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:31,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:32,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 19:19:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:32,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 19:19:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:32,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 19:19:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:32,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 19:19:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:32,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-12-16 19:19:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:32,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-12-16 19:19:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:32,310 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-16 19:19:32,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:32,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760989591] [2023-12-16 19:19:32,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760989591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:32,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:32,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 19:19:32,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762460140] [2023-12-16 19:19:32,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:32,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:19:32,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:32,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:19:32,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:19:32,312 INFO L87 Difference]: Start difference. First operand 605 states and 927 transitions. Second operand has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 states have internal predecessors, (261), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:32,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:32,563 INFO L93 Difference]: Finished difference Result 1289 states and 1968 transitions. [2023-12-16 19:19:32,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:19:32,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 states have internal predecessors, (261), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 317 [2023-12-16 19:19:32,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:32,566 INFO L225 Difference]: With dead ends: 1289 [2023-12-16 19:19:32,566 INFO L226 Difference]: Without dead ends: 617 [2023-12-16 19:19:32,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-16 19:19:32,568 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 952 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:32,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 1759 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:19:32,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-12-16 19:19:32,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 611. [2023-12-16 19:19:32,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 600 states have (on average 1.52) internal successors, (912), 600 states have internal predecessors, (912), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-16 19:19:32,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 930 transitions. [2023-12-16 19:19:32,594 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 930 transitions. Word has length 317 [2023-12-16 19:19:32,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:32,594 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 930 transitions. [2023-12-16 19:19:32,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 states have internal predecessors, (261), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:32,594 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 930 transitions. [2023-12-16 19:19:32,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-12-16 19:19:32,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:32,598 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:32,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-16 19:19:32,598 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:32,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:32,598 INFO L85 PathProgramCache]: Analyzing trace with hash -317734514, now seen corresponding path program 1 times [2023-12-16 19:19:32,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:32,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464630840] [2023-12-16 19:19:32,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:32,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:33,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 19:19:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:33,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-16 19:19:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:33,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 19:19:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:33,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-12-16 19:19:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:33,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-16 19:19:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:33,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-12-16 19:19:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:33,711 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-16 19:19:33,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:33,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464630840] [2023-12-16 19:19:33,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464630840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:33,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:33,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 19:19:33,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050497115] [2023-12-16 19:19:33,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:33,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:19:33,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:33,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:19:33,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:19:33,713 INFO L87 Difference]: Start difference. First operand 611 states and 930 transitions. Second operand has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 19:19:34,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:34,020 INFO L93 Difference]: Finished difference Result 1122 states and 1702 transitions. [2023-12-16 19:19:34,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:19:34,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 319 [2023-12-16 19:19:34,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:34,022 INFO L225 Difference]: With dead ends: 1122 [2023-12-16 19:19:34,022 INFO L226 Difference]: Without dead ends: 623 [2023-12-16 19:19:34,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-16 19:19:34,023 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 1221 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:34,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 1123 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 19:19:34,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2023-12-16 19:19:34,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2023-12-16 19:19:34,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 606 states have (on average 1.50990099009901) internal successors, (915), 606 states have internal predecessors, (915), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-16 19:19:34,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 933 transitions. [2023-12-16 19:19:34,050 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 933 transitions. Word has length 319 [2023-12-16 19:19:34,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:34,050 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 933 transitions. [2023-12-16 19:19:34,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 19:19:34,051 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 933 transitions. [2023-12-16 19:19:34,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2023-12-16 19:19:34,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:34,053 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:34,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-16 19:19:34,053 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:34,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:34,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1301267710, now seen corresponding path program 1 times [2023-12-16 19:19:34,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:34,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105794861] [2023-12-16 19:19:34,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:34,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:35,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 19:19:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:35,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 19:19:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:35,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-16 19:19:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:35,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-16 19:19:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:35,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-16 19:19:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:35,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2023-12-16 19:19:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:35,258 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 72 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-16 19:19:35,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:35,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105794861] [2023-12-16 19:19:35,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105794861] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:19:35,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478108575] [2023-12-16 19:19:35,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:35,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:19:35,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:19:35,261 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:19:35,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 19:19:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:35,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 2071 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-16 19:19:35,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:19:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 65 proven. 29 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-16 19:19:36,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:19:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-16 19:19:36,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478108575] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 19:19:36,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 19:19:36,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 10] total 17 [2023-12-16 19:19:36,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861689093] [2023-12-16 19:19:36,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:36,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:19:36,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:36,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:19:36,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-16 19:19:36,092 INFO L87 Difference]: Start difference. First operand 617 states and 933 transitions. Second operand has 6 states, 5 states have (on average 54.6) internal successors, (273), 6 states have internal predecessors, (273), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 19:19:36,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:36,136 INFO L93 Difference]: Finished difference Result 1092 states and 1645 transitions. [2023-12-16 19:19:36,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:19:36,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 54.6) internal successors, (273), 6 states have internal predecessors, (273), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 321 [2023-12-16 19:19:36,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:36,139 INFO L225 Difference]: With dead ends: 1092 [2023-12-16 19:19:36,139 INFO L226 Difference]: Without dead ends: 617 [2023-12-16 19:19:36,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 645 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-16 19:19:36,140 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 0 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2247 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:36,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2247 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:36,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-12-16 19:19:36,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2023-12-16 19:19:36,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 606 states have (on average 1.504950495049505) internal successors, (912), 606 states have internal predecessors, (912), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-16 19:19:36,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 930 transitions. [2023-12-16 19:19:36,158 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 930 transitions. Word has length 321 [2023-12-16 19:19:36,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:36,158 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 930 transitions. [2023-12-16 19:19:36,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 54.6) internal successors, (273), 6 states have internal predecessors, (273), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 19:19:36,159 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 930 transitions. [2023-12-16 19:19:36,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-12-16 19:19:36,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:36,161 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:36,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 19:19:36,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-16 19:19:36,370 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:36,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:36,371 INFO L85 PathProgramCache]: Analyzing trace with hash 989316046, now seen corresponding path program 1 times [2023-12-16 19:19:36,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:36,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252272199] [2023-12-16 19:19:36,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:36,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:37,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 19:19:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:37,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 19:19:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:37,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-16 19:19:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:37,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-12-16 19:19:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:37,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-12-16 19:19:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:37,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 19:19:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-16 19:19:37,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:37,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252272199] [2023-12-16 19:19:37,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252272199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:37,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:37,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:19:37,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380372307] [2023-12-16 19:19:37,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:37,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:19:37,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:37,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:19:37,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:19:37,387 INFO L87 Difference]: Start difference. First operand 617 states and 930 transitions. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:37,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:37,554 INFO L93 Difference]: Finished difference Result 1032 states and 1544 transitions. [2023-12-16 19:19:37,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:37,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 323 [2023-12-16 19:19:37,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:37,558 INFO L225 Difference]: With dead ends: 1032 [2023-12-16 19:19:37,558 INFO L226 Difference]: Without dead ends: 617 [2023-12-16 19:19:37,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:19:37,559 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 367 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:37,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 680 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:19:37,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-12-16 19:19:37,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2023-12-16 19:19:37,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 606 states have (on average 1.5) internal successors, (909), 606 states have internal predecessors, (909), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-16 19:19:37,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 927 transitions. [2023-12-16 19:19:37,575 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 927 transitions. Word has length 323 [2023-12-16 19:19:37,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:37,576 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 927 transitions. [2023-12-16 19:19:37,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:37,576 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 927 transitions. [2023-12-16 19:19:37,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-12-16 19:19:37,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:37,578 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:37,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-16 19:19:37,578 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:37,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:37,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1769530382, now seen corresponding path program 1 times [2023-12-16 19:19:37,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:37,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450576233] [2023-12-16 19:19:37,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:37,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:38,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 19:19:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:38,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 19:19:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:38,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-16 19:19:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:38,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-12-16 19:19:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:38,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-12-16 19:19:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:38,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 19:19:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-12-16 19:19:38,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:38,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450576233] [2023-12-16 19:19:38,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450576233] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:38,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:38,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:19:38,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285534144] [2023-12-16 19:19:38,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:38,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:19:38,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:38,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:19:38,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:38,860 INFO L87 Difference]: Start difference. First operand 617 states and 927 transitions. Second operand has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 19:19:39,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:39,208 INFO L93 Difference]: Finished difference Result 1118 states and 1675 transitions. [2023-12-16 19:19:39,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:19:39,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 323 [2023-12-16 19:19:39,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:39,210 INFO L225 Difference]: With dead ends: 1118 [2023-12-16 19:19:39,210 INFO L226 Difference]: Without dead ends: 623 [2023-12-16 19:19:39,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-16 19:19:39,211 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 768 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:39,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1123 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 19:19:39,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2023-12-16 19:19:39,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 620. [2023-12-16 19:19:39,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 609 states have (on average 1.4975369458128078) internal successors, (912), 609 states have internal predecessors, (912), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-16 19:19:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 930 transitions. [2023-12-16 19:19:39,235 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 930 transitions. Word has length 323 [2023-12-16 19:19:39,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:39,235 INFO L495 AbstractCegarLoop]: Abstraction has 620 states and 930 transitions. [2023-12-16 19:19:39,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 19:19:39,235 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 930 transitions. [2023-12-16 19:19:39,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-12-16 19:19:39,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:39,237 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:39,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-16 19:19:39,237 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:39,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:39,238 INFO L85 PathProgramCache]: Analyzing trace with hash 241161294, now seen corresponding path program 1 times [2023-12-16 19:19:39,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:39,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140357760] [2023-12-16 19:19:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:39,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:40,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 19:19:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:40,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 19:19:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:40,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-16 19:19:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:40,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-12-16 19:19:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:40,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-12-16 19:19:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:40,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 19:19:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:40,365 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-12-16 19:19:40,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:40,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140357760] [2023-12-16 19:19:40,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140357760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:40,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:40,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:19:40,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709653811] [2023-12-16 19:19:40,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:40,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:19:40,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:40,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:19:40,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:19:40,367 INFO L87 Difference]: Start difference. First operand 620 states and 930 transitions. Second operand has 6 states, 6 states have (on average 38.166666666666664) internal successors, (229), 6 states have internal predecessors, (229), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:40,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:40,668 INFO L93 Difference]: Finished difference Result 1156 states and 1725 transitions. [2023-12-16 19:19:40,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:19:40,669 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.166666666666664) internal successors, (229), 6 states have internal predecessors, (229), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 323 [2023-12-16 19:19:40,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:40,671 INFO L225 Difference]: With dead ends: 1156 [2023-12-16 19:19:40,671 INFO L226 Difference]: Without dead ends: 626 [2023-12-16 19:19:40,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-16 19:19:40,672 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 779 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:40,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 1065 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:19:40,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-12-16 19:19:40,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 623. [2023-12-16 19:19:40,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 612 states have (on average 1.4950980392156863) internal successors, (915), 612 states have internal predecessors, (915), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-16 19:19:40,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 933 transitions. [2023-12-16 19:19:40,689 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 933 transitions. Word has length 323 [2023-12-16 19:19:40,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:40,689 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 933 transitions. [2023-12-16 19:19:40,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.166666666666664) internal successors, (229), 6 states have internal predecessors, (229), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 19:19:40,689 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 933 transitions. [2023-12-16 19:19:40,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-12-16 19:19:40,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:40,692 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:40,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-16 19:19:40,692 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:40,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:40,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1847704434, now seen corresponding path program 1 times [2023-12-16 19:19:40,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:40,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011362180] [2023-12-16 19:19:40,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:40,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:42,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 19:19:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:42,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 19:19:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:42,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-16 19:19:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:42,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-12-16 19:19:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:42,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-12-16 19:19:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:42,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 19:19:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:42,067 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-16 19:19:42,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:42,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011362180] [2023-12-16 19:19:42,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011362180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:42,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:42,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 19:19:42,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600650316] [2023-12-16 19:19:42,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:42,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 19:19:42,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:42,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 19:19:42,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-16 19:19:42,068 INFO L87 Difference]: Start difference. First operand 623 states and 933 transitions. Second operand has 9 states, 9 states have (on average 28.77777777777778) internal successors, (259), 9 states have internal predecessors, (259), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 19:19:43,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:43,449 INFO L93 Difference]: Finished difference Result 1970 states and 2940 transitions. [2023-12-16 19:19:43,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 19:19:43,450 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 28.77777777777778) internal successors, (259), 9 states have internal predecessors, (259), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 323 [2023-12-16 19:19:43,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:43,454 INFO L225 Difference]: With dead ends: 1970 [2023-12-16 19:19:43,454 INFO L226 Difference]: Without dead ends: 1529 [2023-12-16 19:19:43,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-12-16 19:19:43,456 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 2766 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2767 SdHoareTripleChecker+Valid, 2331 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:43,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2767 Valid, 2331 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 19:19:43,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2023-12-16 19:19:43,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 695. [2023-12-16 19:19:43,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 681 states have (on average 1.497797356828194) internal successors, (1020), 681 states have internal predecessors, (1020), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 19:19:43,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1044 transitions. [2023-12-16 19:19:43,480 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1044 transitions. Word has length 323 [2023-12-16 19:19:43,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:43,480 INFO L495 AbstractCegarLoop]: Abstraction has 695 states and 1044 transitions. [2023-12-16 19:19:43,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.77777777777778) internal successors, (259), 9 states have internal predecessors, (259), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 19:19:43,480 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1044 transitions. [2023-12-16 19:19:43,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-16 19:19:43,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:43,482 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:43,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-16 19:19:43,482 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:43,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:43,483 INFO L85 PathProgramCache]: Analyzing trace with hash 705959442, now seen corresponding path program 1 times [2023-12-16 19:19:43,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:43,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937230004] [2023-12-16 19:19:43,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:43,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:44,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 19:19:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:44,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 19:19:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:44,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-16 19:19:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:44,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 19:19:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:44,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 19:19:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:44,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-16 19:19:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-16 19:19:44,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:44,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937230004] [2023-12-16 19:19:44,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937230004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:44,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:44,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:19:44,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805642289] [2023-12-16 19:19:44,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:44,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:19:44,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:44,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:19:44,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:44,518 INFO L87 Difference]: Start difference. First operand 695 states and 1044 transitions. Second operand has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:44,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:44,589 INFO L93 Difference]: Finished difference Result 1593 states and 2369 transitions. [2023-12-16 19:19:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 19:19:44,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 325 [2023-12-16 19:19:44,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:44,593 INFO L225 Difference]: With dead ends: 1593 [2023-12-16 19:19:44,594 INFO L226 Difference]: Without dead ends: 1206 [2023-12-16 19:19:44,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:19:44,595 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 728 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:44,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 2560 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:44,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2023-12-16 19:19:44,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 791. [2023-12-16 19:19:44,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 777 states have (on average 1.4633204633204633) internal successors, (1137), 777 states have internal predecessors, (1137), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 19:19:44,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1161 transitions. [2023-12-16 19:19:44,627 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1161 transitions. Word has length 325 [2023-12-16 19:19:44,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:44,628 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1161 transitions. [2023-12-16 19:19:44,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:44,628 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1161 transitions. [2023-12-16 19:19:44,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-12-16 19:19:44,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:44,630 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:44,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-16 19:19:44,630 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:44,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:44,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1060305266, now seen corresponding path program 1 times [2023-12-16 19:19:44,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:44,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347253740] [2023-12-16 19:19:44,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:44,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:45,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 19:19:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:45,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 19:19:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:45,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-16 19:19:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:45,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-16 19:19:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:45,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-12-16 19:19:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:45,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-12-16 19:19:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:45,097 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-12-16 19:19:45,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:45,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347253740] [2023-12-16 19:19:45,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347253740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:45,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:45,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:19:45,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542992144] [2023-12-16 19:19:45,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:45,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:19:45,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:45,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:19:45,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:45,099 INFO L87 Difference]: Start difference. First operand 791 states and 1161 transitions. Second operand has 5 states, 5 states have (on average 53.2) internal successors, (266), 5 states have internal predecessors, (266), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:45,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:45,155 INFO L93 Difference]: Finished difference Result 1812 states and 2668 transitions. [2023-12-16 19:19:45,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 19:19:45,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.2) internal successors, (266), 5 states have internal predecessors, (266), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 327 [2023-12-16 19:19:45,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:45,159 INFO L225 Difference]: With dead ends: 1812 [2023-12-16 19:19:45,159 INFO L226 Difference]: Without dead ends: 1325 [2023-12-16 19:19:45,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:19:45,160 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 724 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:45,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 1991 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:45,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2023-12-16 19:19:45,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 857. [2023-12-16 19:19:45,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 843 states have (on average 1.4697508896797153) internal successors, (1239), 843 states have internal predecessors, (1239), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 19:19:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1263 transitions. [2023-12-16 19:19:45,186 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1263 transitions. Word has length 327 [2023-12-16 19:19:45,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:45,186 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 1263 transitions. [2023-12-16 19:19:45,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.2) internal successors, (266), 5 states have internal predecessors, (266), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:45,186 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1263 transitions. [2023-12-16 19:19:45,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-12-16 19:19:45,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:45,188 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:45,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-16 19:19:45,189 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:45,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:45,189 INFO L85 PathProgramCache]: Analyzing trace with hash -64243890, now seen corresponding path program 1 times [2023-12-16 19:19:45,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:45,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156941504] [2023-12-16 19:19:45,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:45,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:46,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 19:19:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:46,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 19:19:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:46,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-16 19:19:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:46,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-16 19:19:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:46,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-12-16 19:19:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:46,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-12-16 19:19:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:46,647 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 19:19:46,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:46,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156941504] [2023-12-16 19:19:46,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156941504] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:46,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:46,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 19:19:46,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068269677] [2023-12-16 19:19:46,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:46,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 19:19:46,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:46,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 19:19:46,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-16 19:19:46,649 INFO L87 Difference]: Start difference. First operand 857 states and 1263 transitions. Second operand has 9 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 19:19:47,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:47,935 INFO L93 Difference]: Finished difference Result 2932 states and 4281 transitions. [2023-12-16 19:19:47,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 19:19:47,936 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 327 [2023-12-16 19:19:47,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:47,943 INFO L225 Difference]: With dead ends: 2932 [2023-12-16 19:19:47,943 INFO L226 Difference]: Without dead ends: 2520 [2023-12-16 19:19:47,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-12-16 19:19:47,945 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 1462 mSDsluCounter, 3039 mSDsCounter, 0 mSdLazyCounter, 1719 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 3991 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:47,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 3991 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1719 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 19:19:47,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2023-12-16 19:19:47,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 1151. [2023-12-16 19:19:47,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1137 states have (on average 1.4371152154793316) internal successors, (1634), 1137 states have internal predecessors, (1634), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 19:19:47,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1658 transitions. [2023-12-16 19:19:47,978 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1658 transitions. Word has length 327 [2023-12-16 19:19:47,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:47,979 INFO L495 AbstractCegarLoop]: Abstraction has 1151 states and 1658 transitions. [2023-12-16 19:19:47,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 19:19:47,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1658 transitions. [2023-12-16 19:19:47,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-12-16 19:19:47,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:47,982 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:47,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-16 19:19:47,982 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:47,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:47,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1021181660, now seen corresponding path program 1 times [2023-12-16 19:19:47,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:47,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945897232] [2023-12-16 19:19:47,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:47,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:48,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 19:19:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:48,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 19:19:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:48,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-16 19:19:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:48,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-16 19:19:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:48,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-12-16 19:19:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:48,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-12-16 19:19:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-16 19:19:48,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:48,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945897232] [2023-12-16 19:19:48,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945897232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:48,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:19:48,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:19:48,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402228288] [2023-12-16 19:19:48,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:48,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:19:48,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:48,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:19:48,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:19:48,620 INFO L87 Difference]: Start difference. First operand 1151 states and 1658 transitions. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 19:19:48,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:48,662 INFO L93 Difference]: Finished difference Result 2150 states and 3082 transitions. [2023-12-16 19:19:48,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:19:48,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 327 [2023-12-16 19:19:48,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:48,666 INFO L225 Difference]: With dead ends: 2150 [2023-12-16 19:19:48,667 INFO L226 Difference]: Without dead ends: 1151 [2023-12-16 19:19:48,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:19:48,668 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 748 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:48,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 621 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:19:48,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2023-12-16 19:19:48,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1151. [2023-12-16 19:19:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1137 states have (on average 1.4318381706244503) internal successors, (1628), 1137 states have internal predecessors, (1628), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 19:19:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1652 transitions. [2023-12-16 19:19:48,697 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1652 transitions. Word has length 327 [2023-12-16 19:19:48,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:48,697 INFO L495 AbstractCegarLoop]: Abstraction has 1151 states and 1652 transitions. [2023-12-16 19:19:48,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 19:19:48,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1652 transitions. [2023-12-16 19:19:48,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-12-16 19:19:48,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:48,700 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:48,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-16 19:19:48,700 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:48,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:48,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1108752802, now seen corresponding path program 1 times [2023-12-16 19:19:48,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:48,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925227911] [2023-12-16 19:19:48,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:48,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:52,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 19:19:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:52,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 19:19:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:52,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-16 19:19:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:52,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-16 19:19:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:52,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-12-16 19:19:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:52,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-12-16 19:19:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 19:19:52,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:52,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925227911] [2023-12-16 19:19:52,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925227911] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:19:52,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307330015] [2023-12-16 19:19:52,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:52,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:19:52,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:19:52,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:19:52,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 19:19:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:53,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 2098 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 19:19:53,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:19:53,713 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 19:19:53,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:19:53,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307330015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:19:53,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:19:53,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18] total 25 [2023-12-16 19:19:53,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50477512] [2023-12-16 19:19:53,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:19:53,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 19:19:53,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:19:53,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 19:19:53,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2023-12-16 19:19:53,715 INFO L87 Difference]: Start difference. First operand 1151 states and 1652 transitions. Second operand has 9 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:54,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:19:54,331 INFO L93 Difference]: Finished difference Result 3124 states and 4517 transitions. [2023-12-16 19:19:54,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 19:19:54,332 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 327 [2023-12-16 19:19:54,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:19:54,338 INFO L225 Difference]: With dead ends: 3124 [2023-12-16 19:19:54,338 INFO L226 Difference]: Without dead ends: 2545 [2023-12-16 19:19:54,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2023-12-16 19:19:54,340 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 1308 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 19:19:54,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 2725 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 19:19:54,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2023-12-16 19:19:54,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 1661. [2023-12-16 19:19:54,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1639 states have (on average 1.408175716900549) internal successors, (2308), 1639 states have internal predecessors, (2308), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 19:19:54,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2348 transitions. [2023-12-16 19:19:54,380 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2348 transitions. Word has length 327 [2023-12-16 19:19:54,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:19:54,380 INFO L495 AbstractCegarLoop]: Abstraction has 1661 states and 2348 transitions. [2023-12-16 19:19:54,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 19:19:54,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2348 transitions. [2023-12-16 19:19:54,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-12-16 19:19:54,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:19:54,384 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:54,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 19:19:54,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-12-16 19:19:54,594 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:19:54,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:19:54,595 INFO L85 PathProgramCache]: Analyzing trace with hash 2050270048, now seen corresponding path program 1 times [2023-12-16 19:19:54,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:19:54,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608416215] [2023-12-16 19:19:54,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:54,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:19:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:56,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 19:19:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:56,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 19:19:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:56,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-16 19:19:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:56,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-16 19:19:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:56,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-12-16 19:19:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:56,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-12-16 19:19:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 4 proven. 77 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 19:19:56,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:19:56,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608416215] [2023-12-16 19:19:56,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608416215] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:19:56,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680398745] [2023-12-16 19:19:56,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:19:56,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:19:56,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:19:56,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:19:56,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 19:19:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:19:56,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 2099 conjuncts, 154 conjunts are in the unsatisfiable core [2023-12-16 19:19:56,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:19:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 113 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 19:19:58,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 19:19:58,958 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 19:19:58,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 19:19:58,975 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 19:19:58,994 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 19:19:59,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:19:59,159 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 328 with TraceHistMax 6,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 44 known predicates. [2023-12-16 19:19:59,162 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:19:59,164 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 19:19:59,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:19:59 BoogieIcfgContainer [2023-12-16 19:19:59,166 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 19:19:59,166 INFO L158 Benchmark]: Toolchain (without parser) took 46962.02ms. Allocated memory was 317.7MB in the beginning and 1.0GB in the end (delta: 707.8MB). Free memory was 266.9MB in the beginning and 481.9MB in the end (delta: -215.0MB). Peak memory consumption was 493.8MB. Max. memory is 8.0GB. [2023-12-16 19:19:59,167 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 239.1MB. Free memory is still 191.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 19:19:59,167 INFO L158 Benchmark]: CACSL2BoogieTranslator took 429.03ms. Allocated memory is still 317.7MB. Free memory was 266.6MB in the beginning and 237.1MB in the end (delta: 29.5MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2023-12-16 19:19:59,167 INFO L158 Benchmark]: Boogie Procedure Inliner took 180.53ms. Allocated memory is still 317.7MB. Free memory was 237.1MB in the beginning and 262.2MB in the end (delta: -25.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 19:19:59,167 INFO L158 Benchmark]: Boogie Preprocessor took 187.48ms. Allocated memory is still 317.7MB. Free memory was 262.2MB in the beginning and 246.0MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 19:19:59,167 INFO L158 Benchmark]: RCFGBuilder took 1132.47ms. Allocated memory is still 317.7MB. Free memory was 246.0MB in the beginning and 258.5MB in the end (delta: -12.6MB). Peak memory consumption was 154.1MB. Max. memory is 8.0GB. [2023-12-16 19:19:59,167 INFO L158 Benchmark]: TraceAbstraction took 45028.07ms. Allocated memory was 317.7MB in the beginning and 1.0GB in the end (delta: 707.8MB). Free memory was 258.0MB in the beginning and 481.9MB in the end (delta: -223.9MB). Peak memory consumption was 483.4MB. Max. memory is 8.0GB. [2023-12-16 19:19:59,176 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 239.1MB. Free memory is still 191.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 429.03ms. Allocated memory is still 317.7MB. Free memory was 266.6MB in the beginning and 237.1MB in the end (delta: 29.5MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 180.53ms. Allocated memory is still 317.7MB. Free memory was 237.1MB in the beginning and 262.2MB in the end (delta: -25.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 187.48ms. Allocated memory is still 317.7MB. Free memory was 262.2MB in the beginning and 246.0MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * RCFGBuilder took 1132.47ms. Allocated memory is still 317.7MB. Free memory was 246.0MB in the beginning and 258.5MB in the end (delta: -12.6MB). Peak memory consumption was 154.1MB. Max. memory is 8.0GB. * TraceAbstraction took 45028.07ms. Allocated memory was 317.7MB in the beginning and 1.0GB in the end (delta: 707.8MB). Free memory was 258.0MB in the beginning and 481.9MB in the end (delta: -223.9MB). Peak memory consumption was 483.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 328 with TraceHistMax 6,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 44 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 297 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 45.0s, OverallIterations: 42, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25840 SdHoareTripleChecker+Valid, 5.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25789 mSDsluCounter, 52704 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33628 mSDsCounter, 137 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8338 IncrementalHoareTripleChecker+Invalid, 8475 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 137 mSolverCounterUnsat, 19076 mSDtfsCounter, 8338 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1635 GetRequests, 1407 SyntacticMatches, 1 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1661occurred in iteration=41, InterpolantAutomatonStates: 211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 41 MinimizatonAttempts, 4366 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 10.0s SatisfiabilityAnalysisTime, 19.7s InterpolantComputationTime, 10183 NumberOfCodeBlocks, 10183 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 10460 ConstructedInterpolants, 0 QuantifiedInterpolants, 41372 SizeOfPredicates, 15 NumberOfNonLiveVariables, 4169 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 44 InterpolantComputations, 41 PerfectInterpolantSequences, 3754/3823 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown