/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.arbitrated_top_n2_w16_d8_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 18:51:33,181 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 18:51:33,221 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 18:51:33,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 18:51:33,224 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 18:51:33,242 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 18:51:33,242 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 18:51:33,243 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 18:51:33,243 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 18:51:33,243 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 18:51:33,243 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 18:51:33,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 18:51:33,244 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 18:51:33,244 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 18:51:33,245 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 18:51:33,245 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 18:51:33,245 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 18:51:33,245 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 18:51:33,246 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 18:51:33,246 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 18:51:33,246 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 18:51:33,246 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 18:51:33,247 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 18:51:33,247 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 18:51:33,247 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 18:51:33,247 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 18:51:33,247 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 18:51:33,247 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 18:51:33,248 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 18:51:33,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:51:33,248 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 18:51:33,248 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 18:51:33,248 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 18:51:33,249 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 18:51:33,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 18:51:33,249 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 18:51:33,249 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 18:51:33,249 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 18:51:33,249 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 18:51:33,249 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 18:51:33,250 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 18:51:33,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 18:51:33,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 18:51:33,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 18:51:33,431 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 18:51:33,431 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 18:51:33,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w16_d8_e0.c [2023-12-16 18:51:34,633 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 18:51:35,035 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 18:51:35,035 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w16_d8_e0.c [2023-12-16 18:51:35,048 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac6327820/9136d75e05cc41d89c280dd776023ec9/FLAG099a08764 [2023-12-16 18:51:35,060 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac6327820/9136d75e05cc41d89c280dd776023ec9 [2023-12-16 18:51:35,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 18:51:35,063 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 18:51:35,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 18:51:35,065 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 18:51:35,068 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 18:51:35,069 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:51:35" (1/1) ... [2023-12-16 18:51:35,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce2fed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:51:35, skipping insertion in model container [2023-12-16 18:51:35,070 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:51:35" (1/1) ... [2023-12-16 18:51:35,119 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 18:51:35,303 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.arbitrated_top_n2_w16_d8_e0.c[1270,1283] [2023-12-16 18:51:35,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:51:35,607 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 18:51:35,615 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.arbitrated_top_n2_w16_d8_e0.c[1270,1283] [2023-12-16 18:51:35,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:51:35,752 INFO L206 MainTranslator]: Completed translation [2023-12-16 18:51:35,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:51:35 WrapperNode [2023-12-16 18:51:35,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 18:51:35,755 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 18:51:35,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 18:51:35,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 18:51:35,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:51:35" (1/1) ... [2023-12-16 18:51:35,811 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:51:35" (1/1) ... [2023-12-16 18:51:36,046 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3399 [2023-12-16 18:51:36,047 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 18:51:36,047 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 18:51:36,047 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 18:51:36,047 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 18:51:36,056 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:51:35" (1/1) ... [2023-12-16 18:51:36,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:51:35" (1/1) ... [2023-12-16 18:51:36,190 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:51:35" (1/1) ... [2023-12-16 18:51:36,281 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 18:51:36,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:51:35" (1/1) ... [2023-12-16 18:51:36,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:51:35" (1/1) ... [2023-12-16 18:51:36,369 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:51:35" (1/1) ... [2023-12-16 18:51:36,394 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:51:35" (1/1) ... [2023-12-16 18:51:36,409 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:51:35" (1/1) ... [2023-12-16 18:51:36,427 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:51:35" (1/1) ... [2023-12-16 18:51:36,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 18:51:36,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 18:51:36,467 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 18:51:36,467 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 18:51:36,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:51:35" (1/1) ... [2023-12-16 18:51:36,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:51:36,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 18:51:36,523 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 18:51:36,528 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 18:51:36,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 18:51:36,549 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 18:51:36,549 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 18:51:36,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 18:51:36,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 18:51:36,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 18:51:36,812 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 18:51:36,815 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 18:51:38,610 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 18:51:38,655 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 18:51:38,655 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 18:51:38,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:51:38 BoogieIcfgContainer [2023-12-16 18:51:38,655 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 18:51:38,657 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 18:51:38,657 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 18:51:38,659 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 18:51:38,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:51:35" (1/3) ... [2023-12-16 18:51:38,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d379293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:51:38, skipping insertion in model container [2023-12-16 18:51:38,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:51:35" (2/3) ... [2023-12-16 18:51:38,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d379293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:51:38, skipping insertion in model container [2023-12-16 18:51:38,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:51:38" (3/3) ... [2023-12-16 18:51:38,661 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n2_w16_d8_e0.c [2023-12-16 18:51:38,673 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 18:51:38,673 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 18:51:38,713 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 18:51:38,717 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;@48c9beb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 18:51:38,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 18:51:38,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 683 states, 673 states have (on average 1.6582466567607728) internal successors, (1116), 674 states have internal predecessors, (1116), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-16 18:51:38,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-12-16 18:51:38,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:38,736 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:38,737 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:38,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:38,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1357574527, now seen corresponding path program 1 times [2023-12-16 18:51:38,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:38,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185422357] [2023-12-16 18:51:38,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:38,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:39,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:51:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:39,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:51:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:39,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-16 18:51:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:39,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-16 18:51:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:39,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-16 18:51:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:39,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-16 18:51:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:39,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-16 18:51:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:39,282 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:51:39,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:39,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185422357] [2023-12-16 18:51:39,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185422357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:39,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:39,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 18:51:39,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228372767] [2023-12-16 18:51:39,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:39,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 18:51:39,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:39,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 18:51:39,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 18:51:39,427 INFO L87 Difference]: Start difference. First operand has 683 states, 673 states have (on average 1.6582466567607728) internal successors, (1116), 674 states have internal predecessors, (1116), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 147.0) internal successors, (294), 2 states have internal predecessors, (294), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:51:39,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:39,553 INFO L93 Difference]: Finished difference Result 1276 states and 2120 transitions. [2023-12-16 18:51:39,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 18:51:39,564 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 147.0) internal successors, (294), 2 states have internal predecessors, (294), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 326 [2023-12-16 18:51:39,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:39,580 INFO L225 Difference]: With dead ends: 1276 [2023-12-16 18:51:39,580 INFO L226 Difference]: Without dead ends: 681 [2023-12-16 18:51:39,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 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 18:51:39,589 INFO L413 NwaCegarLoop]: 1124 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, 1124 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 18:51:39,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1124 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:51:39,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2023-12-16 18:51:39,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 681. [2023-12-16 18:51:39,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 672 states have (on average 1.6532738095238095) internal successors, (1111), 672 states have internal predecessors, (1111), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-16 18:51:39,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1125 transitions. [2023-12-16 18:51:39,659 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1125 transitions. Word has length 326 [2023-12-16 18:51:39,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:39,661 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 1125 transitions. [2023-12-16 18:51:39,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 147.0) internal successors, (294), 2 states have internal predecessors, (294), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:51:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1125 transitions. [2023-12-16 18:51:39,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-12-16 18:51:39,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:39,669 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:39,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 18:51:39,670 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:39,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:39,671 INFO L85 PathProgramCache]: Analyzing trace with hash -152137679, now seen corresponding path program 1 times [2023-12-16 18:51:39,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:39,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312482448] [2023-12-16 18:51:39,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:39,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:41,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:51:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:41,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:51:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:41,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-16 18:51:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:41,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-16 18:51:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-16 18:51:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:41,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-16 18:51:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:41,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-16 18:51:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:51:41,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:41,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312482448] [2023-12-16 18:51:41,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312482448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:41,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:41,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:51:41,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80838922] [2023-12-16 18:51:41,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:41,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:51:41,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:41,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:51:41,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:51:41,107 INFO L87 Difference]: Start difference. First operand 681 states and 1125 transitions. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:51:41,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:41,139 INFO L93 Difference]: Finished difference Result 685 states and 1129 transitions. [2023-12-16 18:51:41,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:51:41,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 326 [2023-12-16 18:51:41,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:41,142 INFO L225 Difference]: With dead ends: 685 [2023-12-16 18:51:41,142 INFO L226 Difference]: Without dead ends: 683 [2023-12-16 18:51:41,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 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 18:51:41,144 INFO L413 NwaCegarLoop]: 1122 mSDtfsCounter, 1 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3361 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 18:51:41,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3361 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:51:41,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2023-12-16 18:51:41,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2023-12-16 18:51:41,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 674 states have (on average 1.6513353115727003) internal successors, (1113), 674 states have internal predecessors, (1113), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-16 18:51:41,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1127 transitions. [2023-12-16 18:51:41,153 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1127 transitions. Word has length 326 [2023-12-16 18:51:41,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:41,155 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 1127 transitions. [2023-12-16 18:51:41,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:51:41,155 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1127 transitions. [2023-12-16 18:51:41,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-12-16 18:51:41,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:41,158 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:41,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 18:51:41,158 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:41,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:41,158 INFO L85 PathProgramCache]: Analyzing trace with hash -419574111, now seen corresponding path program 1 times [2023-12-16 18:51:41,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:41,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078266651] [2023-12-16 18:51:41,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:41,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:41,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:51:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:41,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:51:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:41,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-16 18:51:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:41,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-16 18:51:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:41,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-16 18:51:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:41,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-16 18:51:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:41,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-16 18:51:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:51:41,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:41,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078266651] [2023-12-16 18:51:41,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078266651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:41,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:41,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:51:41,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898531317] [2023-12-16 18:51:41,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:41,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:51:41,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:41,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:51:41,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:51:41,834 INFO L87 Difference]: Start difference. First operand 683 states and 1127 transitions. Second operand has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:51:42,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:42,291 INFO L93 Difference]: Finished difference Result 1808 states and 2968 transitions. [2023-12-16 18:51:42,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 18:51:42,291 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), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 327 [2023-12-16 18:51:42,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:42,294 INFO L225 Difference]: With dead ends: 1808 [2023-12-16 18:51:42,294 INFO L226 Difference]: Without dead ends: 683 [2023-12-16 18:51:42,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 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 18:51:42,296 INFO L413 NwaCegarLoop]: 1200 mSDtfsCounter, 2258 mSDsluCounter, 2093 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2258 SdHoareTripleChecker+Valid, 3293 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:42,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2258 Valid, 3293 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 18:51:42,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2023-12-16 18:51:42,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2023-12-16 18:51:42,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 674 states have (on average 1.6498516320474776) internal successors, (1112), 674 states have internal predecessors, (1112), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-16 18:51:42,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1126 transitions. [2023-12-16 18:51:42,323 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1126 transitions. Word has length 327 [2023-12-16 18:51:42,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:42,323 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 1126 transitions. [2023-12-16 18:51:42,324 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), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:51:42,324 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1126 transitions. [2023-12-16 18:51:42,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-16 18:51:42,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:42,326 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:42,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 18:51:42,326 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:42,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:42,327 INFO L85 PathProgramCache]: Analyzing trace with hash 468674459, now seen corresponding path program 1 times [2023-12-16 18:51:42,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:42,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911363882] [2023-12-16 18:51:42,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:42,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:42,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:51:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:42,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:51:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:42,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-16 18:51:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:42,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-16 18:51:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:42,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-16 18:51:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:42,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-16 18:51:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:42,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-16 18:51:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:51:42,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:42,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911363882] [2023-12-16 18:51:42,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911363882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:42,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:42,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:51:42,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573947296] [2023-12-16 18:51:42,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:42,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:51:42,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:42,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:51:42,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:51:42,979 INFO L87 Difference]: Start difference. First operand 683 states and 1126 transitions. Second operand has 5 states, 5 states have (on average 59.2) internal successors, (296), 5 states have internal predecessors, (296), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:51:43,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:43,372 INFO L93 Difference]: Finished difference Result 1278 states and 2106 transitions. [2023-12-16 18:51:43,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:51:43,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.2) internal successors, (296), 5 states have internal predecessors, (296), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 328 [2023-12-16 18:51:43,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:43,376 INFO L225 Difference]: With dead ends: 1278 [2023-12-16 18:51:43,376 INFO L226 Difference]: Without dead ends: 683 [2023-12-16 18:51:43,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 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 18:51:43,378 INFO L413 NwaCegarLoop]: 870 mSDtfsCounter, 1038 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:43,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 1752 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 18:51:43,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2023-12-16 18:51:43,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2023-12-16 18:51:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 674 states have (on average 1.6483679525222552) internal successors, (1111), 674 states have internal predecessors, (1111), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-16 18:51:43,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1125 transitions. [2023-12-16 18:51:43,439 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1125 transitions. Word has length 328 [2023-12-16 18:51:43,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:43,440 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 1125 transitions. [2023-12-16 18:51:43,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.2) internal successors, (296), 5 states have internal predecessors, (296), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:51:43,440 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1125 transitions. [2023-12-16 18:51:43,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2023-12-16 18:51:43,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:43,443 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:43,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 18:51:43,443 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:43,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:43,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1707019987, now seen corresponding path program 1 times [2023-12-16 18:51:43,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:43,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868962119] [2023-12-16 18:51:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:43,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:44,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:51:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:44,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:51:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:44,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-16 18:51:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:44,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-16 18:51:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:44,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-16 18:51:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:44,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-16 18:51:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:44,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-16 18:51:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:51:44,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:44,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868962119] [2023-12-16 18:51:44,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868962119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:44,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:44,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:51:44,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100751283] [2023-12-16 18:51:44,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:44,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:51:44,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:44,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:51:44,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:51:44,182 INFO L87 Difference]: Start difference. First operand 683 states and 1125 transitions. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:51:44,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:44,235 INFO L93 Difference]: Finished difference Result 1281 states and 2108 transitions. [2023-12-16 18:51:44,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:51:44,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 329 [2023-12-16 18:51:44,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:44,238 INFO L225 Difference]: With dead ends: 1281 [2023-12-16 18:51:44,238 INFO L226 Difference]: Without dead ends: 686 [2023-12-16 18:51:44,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 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 18:51:44,240 INFO L413 NwaCegarLoop]: 1120 mSDtfsCounter, 1 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3353 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 18:51:44,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3353 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:51:44,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-12-16 18:51:44,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 685. [2023-12-16 18:51:44,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 676 states have (on average 1.6464497041420119) internal successors, (1113), 676 states have internal predecessors, (1113), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-16 18:51:44,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1127 transitions. [2023-12-16 18:51:44,252 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1127 transitions. Word has length 329 [2023-12-16 18:51:44,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:44,253 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 1127 transitions. [2023-12-16 18:51:44,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:51:44,253 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1127 transitions. [2023-12-16 18:51:44,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2023-12-16 18:51:44,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:44,255 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:44,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 18:51:44,256 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:44,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:44,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1167581273, now seen corresponding path program 1 times [2023-12-16 18:51:44,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:44,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786711661] [2023-12-16 18:51:44,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:44,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:45,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:51:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:45,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:51:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:45,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-16 18:51:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:45,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-16 18:51:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:45,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-16 18:51:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:45,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-16 18:51:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:45,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-16 18:51:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:51:45,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:45,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786711661] [2023-12-16 18:51:45,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786711661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:45,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:45,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:51:45,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385760766] [2023-12-16 18:51:45,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:45,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:51:45,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:45,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:51:45,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:51:45,276 INFO L87 Difference]: Start difference. First operand 685 states and 1127 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:51:45,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:45,366 INFO L93 Difference]: Finished difference Result 1282 states and 2108 transitions. [2023-12-16 18:51:45,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:51:45,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 330 [2023-12-16 18:51:45,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:45,369 INFO L225 Difference]: With dead ends: 1282 [2023-12-16 18:51:45,369 INFO L226 Difference]: Without dead ends: 685 [2023-12-16 18:51:45,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 18:51:45,371 INFO L413 NwaCegarLoop]: 1078 mSDtfsCounter, 892 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:45,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 2158 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:51:45,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-12-16 18:51:45,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 685. [2023-12-16 18:51:45,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 676 states have (on average 1.643491124260355) internal successors, (1111), 676 states have internal predecessors, (1111), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-16 18:51:45,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1125 transitions. [2023-12-16 18:51:45,382 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1125 transitions. Word has length 330 [2023-12-16 18:51:45,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:45,383 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 1125 transitions. [2023-12-16 18:51:45,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:51:45,383 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1125 transitions. [2023-12-16 18:51:45,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-12-16 18:51:45,386 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:45,386 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:45,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 18:51:45,386 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:45,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:45,387 INFO L85 PathProgramCache]: Analyzing trace with hash 971965865, now seen corresponding path program 1 times [2023-12-16 18:51:45,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:45,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193847167] [2023-12-16 18:51:45,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:45,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:46,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:51:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:46,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:51:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:46,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-16 18:51:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:46,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-16 18:51:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:46,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-16 18:51:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:46,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-16 18:51:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:46,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-16 18:51:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:46,090 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:51:46,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:46,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193847167] [2023-12-16 18:51:46,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193847167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:46,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:46,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:51:46,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035633257] [2023-12-16 18:51:46,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:46,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:51:46,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:46,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:51:46,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:51:46,093 INFO L87 Difference]: Start difference. First operand 685 states and 1125 transitions. Second operand has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:51:46,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:46,185 INFO L93 Difference]: Finished difference Result 1384 states and 2271 transitions. [2023-12-16 18:51:46,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 18:51:46,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 331 [2023-12-16 18:51:46,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:46,189 INFO L225 Difference]: With dead ends: 1384 [2023-12-16 18:51:46,189 INFO L226 Difference]: Without dead ends: 685 [2023-12-16 18:51:46,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 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 18:51:46,192 INFO L413 NwaCegarLoop]: 1110 mSDtfsCounter, 1223 mSDsluCounter, 2197 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 3307 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:46,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 3307 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:51:46,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-12-16 18:51:46,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 685. [2023-12-16 18:51:46,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 676 states have (on average 1.6420118343195267) internal successors, (1110), 676 states have internal predecessors, (1110), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-16 18:51:46,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1124 transitions. [2023-12-16 18:51:46,204 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1124 transitions. Word has length 331 [2023-12-16 18:51:46,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:46,205 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 1124 transitions. [2023-12-16 18:51:46,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:51:46,206 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1124 transitions. [2023-12-16 18:51:46,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-16 18:51:46,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:46,208 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:46,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 18:51:46,208 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:46,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:46,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1670670333, now seen corresponding path program 1 times [2023-12-16 18:51:46,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:46,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956500530] [2023-12-16 18:51:46,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:46,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:46,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:51:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:46,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:51:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:46,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-16 18:51:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:46,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-16 18:51:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:46,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-16 18:51:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:46,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-16 18:51:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:46,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-16 18:51:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:51:46,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:46,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956500530] [2023-12-16 18:51:46,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956500530] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:46,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:46,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:51:46,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905448376] [2023-12-16 18:51:46,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:46,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:51:46,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:46,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:51:46,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:51:46,812 INFO L87 Difference]: Start difference. First operand 685 states and 1124 transitions. Second operand has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:51:46,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:46,909 INFO L93 Difference]: Finished difference Result 1282 states and 2102 transitions. [2023-12-16 18:51:46,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:51:46,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 332 [2023-12-16 18:51:46,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:46,912 INFO L225 Difference]: With dead ends: 1282 [2023-12-16 18:51:46,912 INFO L226 Difference]: Without dead ends: 685 [2023-12-16 18:51:46,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 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 18:51:46,914 INFO L413 NwaCegarLoop]: 1078 mSDtfsCounter, 1102 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:46,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 2168 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:51:46,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-12-16 18:51:46,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 685. [2023-12-16 18:51:46,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 676 states have (on average 1.6405325443786982) internal successors, (1109), 676 states have internal predecessors, (1109), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-16 18:51:46,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1123 transitions. [2023-12-16 18:51:46,925 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1123 transitions. Word has length 332 [2023-12-16 18:51:46,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:46,925 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 1123 transitions. [2023-12-16 18:51:46,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:51:46,926 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1123 transitions. [2023-12-16 18:51:46,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2023-12-16 18:51:46,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:46,928 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:46,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 18:51:46,929 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:46,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:46,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1915614467, now seen corresponding path program 1 times [2023-12-16 18:51:46,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:46,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091529100] [2023-12-16 18:51:46,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:46,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:47,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:51:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:47,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:51:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:47,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-16 18:51:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:47,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-16 18:51:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:47,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-16 18:51:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:47,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-16 18:51:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:47,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-16 18:51:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:51:47,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:47,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091529100] [2023-12-16 18:51:47,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091529100] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:47,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:47,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:51:47,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948435804] [2023-12-16 18:51:47,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:47,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:51:47,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:47,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:51:47,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:51:47,419 INFO L87 Difference]: Start difference. First operand 685 states and 1123 transitions. Second operand has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:51:47,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:47,525 INFO L93 Difference]: Finished difference Result 1282 states and 2100 transitions. [2023-12-16 18:51:47,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:51:47,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 333 [2023-12-16 18:51:47,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:47,528 INFO L225 Difference]: With dead ends: 1282 [2023-12-16 18:51:47,528 INFO L226 Difference]: Without dead ends: 685 [2023-12-16 18:51:47,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 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 18:51:47,532 INFO L413 NwaCegarLoop]: 1078 mSDtfsCounter, 1028 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:47,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 2168 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:51:47,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-12-16 18:51:47,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 685. [2023-12-16 18:51:47,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 676 states have (on average 1.6390532544378698) internal successors, (1108), 676 states have internal predecessors, (1108), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-16 18:51:47,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1122 transitions. [2023-12-16 18:51:47,547 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1122 transitions. Word has length 333 [2023-12-16 18:51:47,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:47,548 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 1122 transitions. [2023-12-16 18:51:47,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:51:47,548 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1122 transitions. [2023-12-16 18:51:47,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-12-16 18:51:47,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:47,552 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:47,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 18:51:47,552 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:47,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:47,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1004710235, now seen corresponding path program 1 times [2023-12-16 18:51:47,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:47,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141468301] [2023-12-16 18:51:47,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:47,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:48,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:51:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:48,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:51:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:48,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-16 18:51:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:48,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-16 18:51:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:48,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-16 18:51:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:48,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-16 18:51:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:48,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-16 18:51:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:51:48,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:48,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141468301] [2023-12-16 18:51:48,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141468301] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:48,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:48,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 18:51:48,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487204468] [2023-12-16 18:51:48,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:48,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 18:51:48,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:48,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 18:51:48,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:51:48,651 INFO L87 Difference]: Start difference. First operand 685 states and 1122 transitions. Second operand has 6 states, 6 states have (on average 50.333333333333336) internal successors, (302), 6 states have internal predecessors, (302), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:51:49,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:49,018 INFO L93 Difference]: Finished difference Result 1971 states and 3224 transitions. [2023-12-16 18:51:49,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 18:51:49,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 50.333333333333336) internal successors, (302), 6 states have internal predecessors, (302), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 334 [2023-12-16 18:51:49,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:49,023 INFO L225 Difference]: With dead ends: 1971 [2023-12-16 18:51:49,023 INFO L226 Difference]: Without dead ends: 1291 [2023-12-16 18:51:49,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-16 18:51:49,025 INFO L413 NwaCegarLoop]: 1153 mSDtfsCounter, 1062 mSDsluCounter, 4293 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 5446 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:49,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 5446 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 18:51:49,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2023-12-16 18:51:49,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 731. [2023-12-16 18:51:49,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 720 states have (on average 1.636111111111111) internal successors, (1178), 720 states have internal predecessors, (1178), 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 18:51:49,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1196 transitions. [2023-12-16 18:51:49,042 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1196 transitions. Word has length 334 [2023-12-16 18:51:49,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:49,042 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 1196 transitions. [2023-12-16 18:51:49,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.333333333333336) internal successors, (302), 6 states have internal predecessors, (302), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:51:49,043 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1196 transitions. [2023-12-16 18:51:49,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2023-12-16 18:51:49,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:49,046 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:49,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 18:51:49,046 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:49,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:49,047 INFO L85 PathProgramCache]: Analyzing trace with hash 628392097, now seen corresponding path program 1 times [2023-12-16 18:51:49,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:49,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104851853] [2023-12-16 18:51:49,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:49,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:50,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:51:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:50,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:51:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:50,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-16 18:51:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:50,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-16 18:51:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:50,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-16 18:51:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:50,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-16 18:51:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:50,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-16 18:51:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:51:50,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:50,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104851853] [2023-12-16 18:51:50,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104851853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:50,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:50,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 18:51:50,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735788016] [2023-12-16 18:51:50,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:50,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 18:51:50,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:50,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 18:51:50,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 18:51:50,551 INFO L87 Difference]: Start difference. First operand 731 states and 1196 transitions. Second operand has 9 states, 9 states have (on average 33.666666666666664) internal successors, (303), 9 states have internal predecessors, (303), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:51:52,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:52,416 INFO L93 Difference]: Finished difference Result 2526 states and 4134 transitions. [2023-12-16 18:51:52,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 18:51:52,417 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 33.666666666666664) internal successors, (303), 9 states have internal predecessors, (303), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 335 [2023-12-16 18:51:52,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:52,422 INFO L225 Difference]: With dead ends: 2526 [2023-12-16 18:51:52,423 INFO L226 Difference]: Without dead ends: 1929 [2023-12-16 18:51:52,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:51:52,425 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 3927 mSDsluCounter, 8683 mSDsCounter, 0 mSdLazyCounter, 3166 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3941 SdHoareTripleChecker+Valid, 10268 SdHoareTripleChecker+Invalid, 3181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:52,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3941 Valid, 10268 Invalid, 3181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3166 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 18:51:52,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2023-12-16 18:51:52,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 739. [2023-12-16 18:51:52,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 728 states have (on average 1.6332417582417582) internal successors, (1189), 728 states have internal predecessors, (1189), 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 18:51:52,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1207 transitions. [2023-12-16 18:51:52,451 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1207 transitions. Word has length 335 [2023-12-16 18:51:52,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:52,451 INFO L495 AbstractCegarLoop]: Abstraction has 739 states and 1207 transitions. [2023-12-16 18:51:52,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 33.666666666666664) internal successors, (303), 9 states have internal predecessors, (303), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:51:52,452 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1207 transitions. [2023-12-16 18:51:52,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-12-16 18:51:52,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:52,457 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:52,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 18:51:52,457 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:52,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:52,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2008633247, now seen corresponding path program 1 times [2023-12-16 18:51:52,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:52,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089979529] [2023-12-16 18:51:52,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:52,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:53,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:51:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:53,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:51:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:53,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 18:51:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:53,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:51:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:53,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-16 18:51:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:53,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 18:51:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:53,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-16 18:51:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:53,314 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:51:53,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:53,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089979529] [2023-12-16 18:51:53,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089979529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:53,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:53,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:51:53,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299351196] [2023-12-16 18:51:53,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:53,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:51:53,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:53,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:51:53,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:51:53,316 INFO L87 Difference]: Start difference. First operand 739 states and 1207 transitions. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:51:53,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:53,411 INFO L93 Difference]: Finished difference Result 1344 states and 2194 transitions. [2023-12-16 18:51:53,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:51:53,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 336 [2023-12-16 18:51:53,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:53,415 INFO L225 Difference]: With dead ends: 1344 [2023-12-16 18:51:53,415 INFO L226 Difference]: Without dead ends: 739 [2023-12-16 18:51:53,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 18:51:53,416 INFO L413 NwaCegarLoop]: 1078 mSDtfsCounter, 956 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:53,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 2158 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:51:53,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2023-12-16 18:51:53,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2023-12-16 18:51:53,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 728 states have (on average 1.6318681318681318) internal successors, (1188), 728 states have internal predecessors, (1188), 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 18:51:53,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1206 transitions. [2023-12-16 18:51:53,442 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1206 transitions. Word has length 336 [2023-12-16 18:51:53,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:53,443 INFO L495 AbstractCegarLoop]: Abstraction has 739 states and 1206 transitions. [2023-12-16 18:51:53,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:51:53,444 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1206 transitions. [2023-12-16 18:51:53,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-12-16 18:51:53,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:53,446 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:53,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 18:51:53,447 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:53,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:53,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1397364189, now seen corresponding path program 1 times [2023-12-16 18:51:53,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:53,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361939989] [2023-12-16 18:51:53,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:53,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:54,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:51:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:54,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:51:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:54,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 18:51:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:54,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:51:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:54,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-16 18:51:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:54,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 18:51:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:54,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-16 18:51:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:54,861 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:51:54,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:54,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361939989] [2023-12-16 18:51:54,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361939989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:54,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:54,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 18:51:54,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113444790] [2023-12-16 18:51:54,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:54,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 18:51:54,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:54,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 18:51:54,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:51:54,863 INFO L87 Difference]: Start difference. First operand 739 states and 1206 transitions. Second operand has 7 states, 7 states have (on average 43.42857142857143) internal successors, (304), 7 states have internal predecessors, (304), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:51:55,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:55,165 INFO L93 Difference]: Finished difference Result 2532 states and 4135 transitions. [2023-12-16 18:51:55,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 18:51:55,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 43.42857142857143) internal successors, (304), 7 states have internal predecessors, (304), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 336 [2023-12-16 18:51:55,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:55,172 INFO L225 Difference]: With dead ends: 2532 [2023-12-16 18:51:55,172 INFO L226 Difference]: Without dead ends: 1927 [2023-12-16 18:51:55,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-16 18:51:55,174 INFO L413 NwaCegarLoop]: 2896 mSDtfsCounter, 3029 mSDsluCounter, 8807 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 11703 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:55,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 11703 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 18:51:55,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2023-12-16 18:51:55,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 739. [2023-12-16 18:51:55,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 728 states have (on average 1.6304945054945055) internal successors, (1187), 728 states have internal predecessors, (1187), 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 18:51:55,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1205 transitions. [2023-12-16 18:51:55,196 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1205 transitions. Word has length 336 [2023-12-16 18:51:55,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:55,197 INFO L495 AbstractCegarLoop]: Abstraction has 739 states and 1205 transitions. [2023-12-16 18:51:55,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 43.42857142857143) internal successors, (304), 7 states have internal predecessors, (304), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:51:55,197 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1205 transitions. [2023-12-16 18:51:55,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-12-16 18:51:55,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:55,199 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:55,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 18:51:55,199 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:55,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:55,199 INFO L85 PathProgramCache]: Analyzing trace with hash 959853761, now seen corresponding path program 1 times [2023-12-16 18:51:55,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:55,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640814130] [2023-12-16 18:51:55,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:55,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:56,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:51:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:56,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:51:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:56,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 18:51:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:56,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:51:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:56,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-16 18:51:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:56,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 18:51:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:56,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-16 18:51:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:51:56,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:56,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640814130] [2023-12-16 18:51:56,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640814130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:56,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:56,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:51:56,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122693051] [2023-12-16 18:51:56,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:56,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:51:56,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:56,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:51:56,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:51:56,041 INFO L87 Difference]: Start difference. First operand 739 states and 1205 transitions. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:51:56,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:56,387 INFO L93 Difference]: Finished difference Result 1344 states and 2190 transitions. [2023-12-16 18:51:56,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:51:56,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 336 [2023-12-16 18:51:56,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:56,390 INFO L225 Difference]: With dead ends: 1344 [2023-12-16 18:51:56,390 INFO L226 Difference]: Without dead ends: 739 [2023-12-16 18:51:56,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 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 18:51:56,391 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 1040 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:56,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 1746 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 18:51:56,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2023-12-16 18:51:56,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2023-12-16 18:51:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 728 states have (on average 1.629120879120879) internal successors, (1186), 728 states have internal predecessors, (1186), 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 18:51:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1204 transitions. [2023-12-16 18:51:56,418 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1204 transitions. Word has length 336 [2023-12-16 18:51:56,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:56,418 INFO L495 AbstractCegarLoop]: Abstraction has 739 states and 1204 transitions. [2023-12-16 18:51:56,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:51:56,418 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1204 transitions. [2023-12-16 18:51:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-12-16 18:51:56,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:56,420 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:56,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 18:51:56,420 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:56,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:56,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1905090141, now seen corresponding path program 1 times [2023-12-16 18:51:56,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:56,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209122552] [2023-12-16 18:51:56,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:56,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:57,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:51:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:57,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:51:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:57,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 18:51:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:57,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:51:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:57,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-16 18:51:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:57,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 18:51:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:57,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-16 18:51:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:51:57,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:57,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209122552] [2023-12-16 18:51:57,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209122552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:57,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:57,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:51:57,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650345011] [2023-12-16 18:51:57,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:57,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:51:57,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:57,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:51:57,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:51:57,398 INFO L87 Difference]: Start difference. First operand 739 states and 1204 transitions. Second operand has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:51:58,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:58,004 INFO L93 Difference]: Finished difference Result 1348 states and 2194 transitions. [2023-12-16 18:51:58,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:51:58,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 337 [2023-12-16 18:51:58,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:58,007 INFO L225 Difference]: With dead ends: 1348 [2023-12-16 18:51:58,007 INFO L226 Difference]: Without dead ends: 743 [2023-12-16 18:51:58,010 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 18:51:58,010 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 967 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:58,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 2624 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 18:51:58,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2023-12-16 18:51:58,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 741. [2023-12-16 18:51:58,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 730 states have (on average 1.6273972602739726) internal successors, (1188), 730 states have internal predecessors, (1188), 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 18:51:58,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1206 transitions. [2023-12-16 18:51:58,025 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1206 transitions. Word has length 337 [2023-12-16 18:51:58,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:58,025 INFO L495 AbstractCegarLoop]: Abstraction has 741 states and 1206 transitions. [2023-12-16 18:51:58,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:51:58,026 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1206 transitions. [2023-12-16 18:51:58,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2023-12-16 18:51:58,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:58,028 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:58,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 18:51:58,028 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:58,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:58,028 INFO L85 PathProgramCache]: Analyzing trace with hash -585714055, now seen corresponding path program 1 times [2023-12-16 18:51:58,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:58,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596233843] [2023-12-16 18:51:58,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:58,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:58,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:51:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:58,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:51:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:58,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 18:51:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:58,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:51:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:58,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-16 18:51:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:58,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 18:51:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:58,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-16 18:51:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:58,768 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:51:58,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:58,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596233843] [2023-12-16 18:51:58,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596233843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:58,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:58,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:51:58,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23068930] [2023-12-16 18:51:58,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:58,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:51:58,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:58,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:51:58,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:51:58,772 INFO L87 Difference]: Start difference. First operand 741 states and 1206 transitions. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:51:59,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:59,112 INFO L93 Difference]: Finished difference Result 1348 states and 2192 transitions. [2023-12-16 18:51:59,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:51:59,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 338 [2023-12-16 18:51:59,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:59,115 INFO L225 Difference]: With dead ends: 1348 [2023-12-16 18:51:59,115 INFO L226 Difference]: Without dead ends: 741 [2023-12-16 18:51:59,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 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 18:51:59,116 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 961 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:59,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 1756 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 18:51:59,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2023-12-16 18:51:59,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 739. [2023-12-16 18:51:59,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 728 states have (on average 1.6277472527472527) internal successors, (1185), 728 states have internal predecessors, (1185), 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 18:51:59,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1203 transitions. [2023-12-16 18:51:59,130 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1203 transitions. Word has length 338 [2023-12-16 18:51:59,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:59,130 INFO L495 AbstractCegarLoop]: Abstraction has 739 states and 1203 transitions. [2023-12-16 18:51:59,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:51:59,130 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1203 transitions. [2023-12-16 18:51:59,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2023-12-16 18:51:59,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:59,132 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:59,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 18:51:59,132 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:59,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:59,133 INFO L85 PathProgramCache]: Analyzing trace with hash 633265375, now seen corresponding path program 1 times [2023-12-16 18:51:59,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:59,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965419073] [2023-12-16 18:51:59,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:59,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:00,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:52:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:00,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:52:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:00,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 18:52:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:00,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:52:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:00,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-16 18:52:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:00,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 18:52:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:00,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-16 18:52:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:00,327 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:52:00,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:52:00,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965419073] [2023-12-16 18:52:00,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965419073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:52:00,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:52:00,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:52:00,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951652188] [2023-12-16 18:52:00,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:52:00,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:52:00,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:52:00,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:52:00,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:52:00,329 INFO L87 Difference]: Start difference. First operand 739 states and 1203 transitions. Second operand has 5 states, 5 states have (on average 61.2) internal successors, (306), 5 states have internal predecessors, (306), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:52:00,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:52:00,472 INFO L93 Difference]: Finished difference Result 2385 states and 3878 transitions. [2023-12-16 18:52:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 18:52:00,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 61.2) internal successors, (306), 5 states have internal predecessors, (306), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 338 [2023-12-16 18:52:00,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:52:00,478 INFO L225 Difference]: With dead ends: 2385 [2023-12-16 18:52:00,478 INFO L226 Difference]: Without dead ends: 1780 [2023-12-16 18:52:00,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 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 18:52:00,480 INFO L413 NwaCegarLoop]: 2069 mSDtfsCounter, 2102 mSDsluCounter, 4651 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2102 SdHoareTripleChecker+Valid, 6720 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:52:00,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2102 Valid, 6720 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:52:00,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2023-12-16 18:52:00,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 960. [2023-12-16 18:52:00,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 949 states have (on average 1.624868282402529) internal successors, (1542), 949 states have internal predecessors, (1542), 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 18:52:00,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1560 transitions. [2023-12-16 18:52:00,505 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1560 transitions. Word has length 338 [2023-12-16 18:52:00,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:52:00,505 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 1560 transitions. [2023-12-16 18:52:00,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.2) internal successors, (306), 5 states have internal predecessors, (306), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:52:00,506 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1560 transitions. [2023-12-16 18:52:00,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-12-16 18:52:00,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:52:00,508 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:00,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 18:52:00,508 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:52:00,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:52:00,508 INFO L85 PathProgramCache]: Analyzing trace with hash -274349497, now seen corresponding path program 1 times [2023-12-16 18:52:00,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:52:00,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302756968] [2023-12-16 18:52:00,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:52:00,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:52:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:00,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:52:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:00,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:52:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:00,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 18:52:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:00,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:52:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:00,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-16 18:52:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:00,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 18:52:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:00,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-16 18:52:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:00,947 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:52:00,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:52:00,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302756968] [2023-12-16 18:52:00,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302756968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:52:00,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:52:00,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:52:00,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006637707] [2023-12-16 18:52:00,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:52:00,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:52:00,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:52:00,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:52:00,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:52:00,949 INFO L87 Difference]: Start difference. First operand 960 states and 1560 transitions. Second operand has 5 states, 5 states have (on average 61.4) internal successors, (307), 5 states have internal predecessors, (307), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:52:01,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:52:01,026 INFO L93 Difference]: Finished difference Result 2412 states and 3919 transitions. [2023-12-16 18:52:01,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 18:52:01,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 61.4) internal successors, (307), 5 states have internal predecessors, (307), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 339 [2023-12-16 18:52:01,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:52:01,031 INFO L225 Difference]: With dead ends: 2412 [2023-12-16 18:52:01,032 INFO L226 Difference]: Without dead ends: 1586 [2023-12-16 18:52:01,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 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 18:52:01,033 INFO L413 NwaCegarLoop]: 1301 mSDtfsCounter, 1907 mSDsluCounter, 3548 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1907 SdHoareTripleChecker+Valid, 4849 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:52:01,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1907 Valid, 4849 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:52:01,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2023-12-16 18:52:01,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 974. [2023-12-16 18:52:01,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 963 states have (on average 1.624091381100727) internal successors, (1564), 963 states have internal predecessors, (1564), 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 18:52:01,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1582 transitions. [2023-12-16 18:52:01,057 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1582 transitions. Word has length 339 [2023-12-16 18:52:01,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:52:01,058 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 1582 transitions. [2023-12-16 18:52:01,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.4) internal successors, (307), 5 states have internal predecessors, (307), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:52:01,058 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1582 transitions. [2023-12-16 18:52:01,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-12-16 18:52:01,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:52:01,061 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:01,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 18:52:01,061 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:52:01,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:52:01,061 INFO L85 PathProgramCache]: Analyzing trace with hash -243701389, now seen corresponding path program 1 times [2023-12-16 18:52:01,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:52:01,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49780354] [2023-12-16 18:52:01,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:52:01,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:52:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:02,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:52:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:02,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:52:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:02,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 18:52:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:02,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:52:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:02,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-16 18:52:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:02,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 18:52:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:02,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-16 18:52:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:52:02,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:52:02,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49780354] [2023-12-16 18:52:02,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49780354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:52:02,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:52:02,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:52:02,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828888448] [2023-12-16 18:52:02,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:52:02,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:52:02,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:52:02,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:52:02,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:52:02,493 INFO L87 Difference]: Start difference. First operand 974 states and 1582 transitions. Second operand has 5 states, 5 states have (on average 61.4) internal successors, (307), 5 states have internal predecessors, (307), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:52:03,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:52:03,047 INFO L93 Difference]: Finished difference Result 1822 states and 2954 transitions. [2023-12-16 18:52:03,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:52:03,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 61.4) internal successors, (307), 5 states have internal predecessors, (307), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 339 [2023-12-16 18:52:03,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:52:03,050 INFO L225 Difference]: With dead ends: 1822 [2023-12-16 18:52:03,050 INFO L226 Difference]: Without dead ends: 982 [2023-12-16 18:52:03,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 18:52:03,055 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 887 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:52:03,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 2602 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 18:52:03,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2023-12-16 18:52:03,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 980. [2023-12-16 18:52:03,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 969 states have (on average 1.6202270381836945) internal successors, (1570), 969 states have internal predecessors, (1570), 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 18:52:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1588 transitions. [2023-12-16 18:52:03,084 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1588 transitions. Word has length 339 [2023-12-16 18:52:03,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:52:03,085 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1588 transitions. [2023-12-16 18:52:03,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.4) internal successors, (307), 5 states have internal predecessors, (307), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 18:52:03,086 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1588 transitions. [2023-12-16 18:52:03,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-12-16 18:52:03,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:52:03,089 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:03,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 18:52:03,091 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:52:03,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:52:03,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1238395087, now seen corresponding path program 1 times [2023-12-16 18:52:03,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:52:03,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872340346] [2023-12-16 18:52:03,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:52:03,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:52:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:03,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:52:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:03,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:52:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:03,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 18:52:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:03,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-16 18:52:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:03,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-16 18:52:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:03,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 18:52:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:03,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-16 18:52:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:03,811 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:52:03,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:52:03,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872340346] [2023-12-16 18:52:03,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872340346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:52:03,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:52:03,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 18:52:03,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241046636] [2023-12-16 18:52:03,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:52:03,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 18:52:03,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:52:03,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 18:52:03,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:52:03,813 INFO L87 Difference]: Start difference. First operand 980 states and 1588 transitions. Second operand has 7 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:04,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:52:04,449 INFO L93 Difference]: Finished difference Result 1899 states and 3072 transitions. [2023-12-16 18:52:04,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 18:52:04,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 339 [2023-12-16 18:52:04,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:52:04,452 INFO L225 Difference]: With dead ends: 1899 [2023-12-16 18:52:04,452 INFO L226 Difference]: Without dead ends: 1053 [2023-12-16 18:52:04,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-16 18:52:04,454 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 3041 mSDsluCounter, 2029 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 18:52:04,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 2948 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 18:52:04,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2023-12-16 18:52:04,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 982. [2023-12-16 18:52:04,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 971 states have (on average 1.6179196704428425) internal successors, (1571), 971 states have internal predecessors, (1571), 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 18:52:04,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1589 transitions. [2023-12-16 18:52:04,474 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1589 transitions. Word has length 339 [2023-12-16 18:52:04,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:52:04,474 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1589 transitions. [2023-12-16 18:52:04,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:04,475 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1589 transitions. [2023-12-16 18:52:04,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-12-16 18:52:04,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:52:04,477 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:04,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 18:52:04,477 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:52:04,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:52:04,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1272525977, now seen corresponding path program 1 times [2023-12-16 18:52:04,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:52:04,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553622470] [2023-12-16 18:52:04,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:52:04,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:52:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:05,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:52:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:05,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:52:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:05,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 18:52:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:05,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-16 18:52:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:05,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-16 18:52:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:05,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-16 18:52:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:05,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-16 18:52:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:05,405 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:52:05,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:52:05,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553622470] [2023-12-16 18:52:05,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553622470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:52:05,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:52:05,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 18:52:05,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484110991] [2023-12-16 18:52:05,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:52:05,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 18:52:05,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:52:05,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 18:52:05,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 18:52:05,409 INFO L87 Difference]: Start difference. First operand 982 states and 1589 transitions. Second operand has 8 states, 8 states have (on average 38.5) internal successors, (308), 8 states have internal predecessors, (308), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:52:06,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:52:06,663 INFO L93 Difference]: Finished difference Result 2747 states and 4440 transitions. [2023-12-16 18:52:06,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 18:52:06,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 38.5) internal successors, (308), 8 states have internal predecessors, (308), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 340 [2023-12-16 18:52:06,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:52:06,671 INFO L225 Difference]: With dead ends: 2747 [2023-12-16 18:52:06,671 INFO L226 Difference]: Without dead ends: 1899 [2023-12-16 18:52:06,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-12-16 18:52:06,674 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 3793 mSDsluCounter, 4016 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3800 SdHoareTripleChecker+Valid, 5002 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:52:06,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3800 Valid, 5002 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 18:52:06,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2023-12-16 18:52:06,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1825. [2023-12-16 18:52:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1807 states have (on average 1.6170448256779193) internal successors, (2922), 1807 states have internal predecessors, (2922), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 18:52:06,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2954 transitions. [2023-12-16 18:52:06,728 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2954 transitions. Word has length 340 [2023-12-16 18:52:06,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:52:06,729 INFO L495 AbstractCegarLoop]: Abstraction has 1825 states and 2954 transitions. [2023-12-16 18:52:06,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.5) internal successors, (308), 8 states have internal predecessors, (308), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:52:06,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2954 transitions. [2023-12-16 18:52:06,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-12-16 18:52:06,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:52:06,733 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:06,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 18:52:06,734 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:52:06,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:52:06,734 INFO L85 PathProgramCache]: Analyzing trace with hash -605144087, now seen corresponding path program 1 times [2023-12-16 18:52:06,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:52:06,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819121028] [2023-12-16 18:52:06,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:52:06,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:52:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:07,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:52:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:07,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 18:52:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:07,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 18:52:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:07,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-16 18:52:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:07,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-16 18:52:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:07,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-16 18:52:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:07,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-16 18:52:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:52:07,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:52:07,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819121028] [2023-12-16 18:52:07,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819121028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:52:07,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:52:07,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 18:52:07,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978745128] [2023-12-16 18:52:07,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:52:07,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 18:52:07,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:52:07,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 18:52:07,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:52:07,609 INFO L87 Difference]: Start difference. First operand 1825 states and 2954 transitions. Second operand has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:08,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:52:08,094 INFO L93 Difference]: Finished difference Result 3781 states and 6092 transitions. [2023-12-16 18:52:08,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 18:52:08,094 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 340 [2023-12-16 18:52:08,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:52:08,100 INFO L225 Difference]: With dead ends: 3781 [2023-12-16 18:52:08,100 INFO L226 Difference]: Without dead ends: 1861 [2023-12-16 18:52:08,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 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 18:52:08,103 INFO L413 NwaCegarLoop]: 1229 mSDtfsCounter, 2097 mSDsluCounter, 3554 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2097 SdHoareTripleChecker+Valid, 4783 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 18:52:08,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2097 Valid, 4783 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 18:52:08,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2023-12-16 18:52:08,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1831. [2023-12-16 18:52:08,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1813 states have (on average 1.6133480419194706) internal successors, (2925), 1813 states have internal predecessors, (2925), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 18:52:08,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2957 transitions. [2023-12-16 18:52:08,148 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2957 transitions. Word has length 340 [2023-12-16 18:52:08,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:52:08,148 INFO L495 AbstractCegarLoop]: Abstraction has 1831 states and 2957 transitions. [2023-12-16 18:52:08,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:08,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2957 transitions. [2023-12-16 18:52:08,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-12-16 18:52:08,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:52:08,151 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:08,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 18:52:08,151 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:52:08,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:52:08,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1489784991, now seen corresponding path program 1 times [2023-12-16 18:52:08,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:52:08,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441062819] [2023-12-16 18:52:08,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:52:08,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:52:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:08,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:52:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:08,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-16 18:52:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:08,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-16 18:52:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:08,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-16 18:52:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:08,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-16 18:52:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:08,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-16 18:52:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:08,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-16 18:52:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:52:08,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:52:08,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441062819] [2023-12-16 18:52:08,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441062819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:52:08,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:52:08,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 18:52:08,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744631569] [2023-12-16 18:52:08,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:52:08,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 18:52:08,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:52:08,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 18:52:08,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:52:08,911 INFO L87 Difference]: Start difference. First operand 1831 states and 2957 transitions. Second operand has 7 states, 7 states have (on average 44.142857142857146) internal successors, (309), 7 states have internal predecessors, (309), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:09,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:52:09,744 INFO L93 Difference]: Finished difference Result 3641 states and 5872 transitions. [2023-12-16 18:52:09,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 18:52:09,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.142857142857146) internal successors, (309), 7 states have internal predecessors, (309), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 341 [2023-12-16 18:52:09,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:52:09,751 INFO L225 Difference]: With dead ends: 3641 [2023-12-16 18:52:09,751 INFO L226 Difference]: Without dead ends: 1946 [2023-12-16 18:52:09,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 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 18:52:09,757 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 3008 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3010 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 18:52:09,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3010 Valid, 3014 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 18:52:09,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1946 states. [2023-12-16 18:52:09,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1946 to 1835. [2023-12-16 18:52:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1835 states, 1817 states have (on average 1.6108970831040177) internal successors, (2927), 1817 states have internal predecessors, (2927), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 18:52:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2959 transitions. [2023-12-16 18:52:09,837 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2959 transitions. Word has length 341 [2023-12-16 18:52:09,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:52:09,840 INFO L495 AbstractCegarLoop]: Abstraction has 1835 states and 2959 transitions. [2023-12-16 18:52:09,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.142857142857146) internal successors, (309), 7 states have internal predecessors, (309), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:09,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2959 transitions. [2023-12-16 18:52:09,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-12-16 18:52:09,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:52:09,845 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:09,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-16 18:52:09,845 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:52:09,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:52:09,846 INFO L85 PathProgramCache]: Analyzing trace with hash 711610161, now seen corresponding path program 1 times [2023-12-16 18:52:09,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:52:09,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627519399] [2023-12-16 18:52:09,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:52:09,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:52:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:10,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:52:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:10,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-16 18:52:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:10,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-16 18:52:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:10,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-16 18:52:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:10,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-16 18:52:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:10,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-16 18:52:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:10,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-16 18:52:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:10,809 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:52:10,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:52:10,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627519399] [2023-12-16 18:52:10,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627519399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:52:10,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:52:10,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 18:52:10,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410096339] [2023-12-16 18:52:10,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:52:10,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 18:52:10,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:52:10,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 18:52:10,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:52:10,813 INFO L87 Difference]: Start difference. First operand 1835 states and 2959 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:11,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:52:11,532 INFO L93 Difference]: Finished difference Result 3675 states and 5914 transitions. [2023-12-16 18:52:11,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 18:52:11,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 342 [2023-12-16 18:52:11,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:52:11,538 INFO L225 Difference]: With dead ends: 3675 [2023-12-16 18:52:11,539 INFO L226 Difference]: Without dead ends: 1976 [2023-12-16 18:52:11,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 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 18:52:11,542 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 2012 mSDsluCounter, 2126 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2014 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 18:52:11,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2014 Valid, 3073 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 18:52:11,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2023-12-16 18:52:11,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1839. [2023-12-16 18:52:11,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1821 states have (on average 1.6084568918176827) internal successors, (2929), 1821 states have internal predecessors, (2929), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 18:52:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2961 transitions. [2023-12-16 18:52:11,592 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2961 transitions. Word has length 342 [2023-12-16 18:52:11,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:52:11,592 INFO L495 AbstractCegarLoop]: Abstraction has 1839 states and 2961 transitions. [2023-12-16 18:52:11,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2961 transitions. [2023-12-16 18:52:11,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2023-12-16 18:52:11,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:52:11,596 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:11,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-16 18:52:11,597 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:52:11,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:52:11,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1359328043, now seen corresponding path program 1 times [2023-12-16 18:52:11,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:52:11,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960659687] [2023-12-16 18:52:11,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:52:11,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:52:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:12,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:52:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:12,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-16 18:52:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:12,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-16 18:52:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:12,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-16 18:52:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:12,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-16 18:52:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:12,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-16 18:52:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:12,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-16 18:52:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:52:12,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:52:12,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960659687] [2023-12-16 18:52:12,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960659687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:52:12,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:52:12,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 18:52:12,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041438463] [2023-12-16 18:52:12,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:52:12,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 18:52:12,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:52:12,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 18:52:12,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 18:52:12,776 INFO L87 Difference]: Start difference. First operand 1839 states and 2961 transitions. Second operand has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:13,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:52:13,276 INFO L93 Difference]: Finished difference Result 7159 states and 11503 transitions. [2023-12-16 18:52:13,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 18:52:13,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 343 [2023-12-16 18:52:13,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:52:13,286 INFO L225 Difference]: With dead ends: 7159 [2023-12-16 18:52:13,287 INFO L226 Difference]: Without dead ends: 5456 [2023-12-16 18:52:13,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:52:13,291 INFO L413 NwaCegarLoop]: 1313 mSDtfsCounter, 6495 mSDsluCounter, 6773 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6502 SdHoareTripleChecker+Valid, 8086 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 18:52:13,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6502 Valid, 8086 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 18:52:13,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5456 states. [2023-12-16 18:52:13,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5456 to 1918. [2023-12-16 18:52:13,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1918 states, 1894 states have (on average 1.6013727560718056) internal successors, (3033), 1894 states have internal predecessors, (3033), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-16 18:52:13,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 3077 transitions. [2023-12-16 18:52:13,356 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 3077 transitions. Word has length 343 [2023-12-16 18:52:13,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:52:13,357 INFO L495 AbstractCegarLoop]: Abstraction has 1918 states and 3077 transitions. [2023-12-16 18:52:13,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:13,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 3077 transitions. [2023-12-16 18:52:13,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2023-12-16 18:52:13,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:52:13,360 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:13,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-16 18:52:13,360 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:52:13,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:52:13,360 INFO L85 PathProgramCache]: Analyzing trace with hash 640687941, now seen corresponding path program 1 times [2023-12-16 18:52:13,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:52:13,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928666953] [2023-12-16 18:52:13,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:52:13,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:52:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:14,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:52:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:14,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-16 18:52:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:14,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-16 18:52:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:14,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-16 18:52:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:14,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-16 18:52:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:14,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-16 18:52:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:14,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-16 18:52:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:52:14,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:52:14,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928666953] [2023-12-16 18:52:14,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928666953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:52:14,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:52:14,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 18:52:14,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807452541] [2023-12-16 18:52:14,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:52:14,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 18:52:14,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:52:14,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 18:52:14,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 18:52:14,481 INFO L87 Difference]: Start difference. First operand 1918 states and 3077 transitions. Second operand has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:14,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:52:14,768 INFO L93 Difference]: Finished difference Result 7316 states and 11735 transitions. [2023-12-16 18:52:14,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 18:52:14,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 343 [2023-12-16 18:52:14,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:52:14,777 INFO L225 Difference]: With dead ends: 7316 [2023-12-16 18:52:14,778 INFO L226 Difference]: Without dead ends: 5534 [2023-12-16 18:52:14,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-16 18:52:14,781 INFO L413 NwaCegarLoop]: 1275 mSDtfsCounter, 5539 mSDsluCounter, 6040 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5551 SdHoareTripleChecker+Valid, 7315 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:52:14,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5551 Valid, 7315 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:52:14,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5534 states. [2023-12-16 18:52:14,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5534 to 2120. [2023-12-16 18:52:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2120 states, 2083 states have (on average 1.5933749399903985) internal successors, (3319), 2083 states have internal predecessors, (3319), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-16 18:52:14,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2120 states to 2120 states and 3389 transitions. [2023-12-16 18:52:14,858 INFO L78 Accepts]: Start accepts. Automaton has 2120 states and 3389 transitions. Word has length 343 [2023-12-16 18:52:14,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:52:14,859 INFO L495 AbstractCegarLoop]: Abstraction has 2120 states and 3389 transitions. [2023-12-16 18:52:14,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:14,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2120 states and 3389 transitions. [2023-12-16 18:52:14,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2023-12-16 18:52:14,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:52:14,862 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:14,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-16 18:52:14,862 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:52:14,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:52:14,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1282417197, now seen corresponding path program 1 times [2023-12-16 18:52:14,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:52:14,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849369544] [2023-12-16 18:52:14,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:52:14,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:52:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:15,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:52:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:15,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-16 18:52:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:15,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-16 18:52:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:15,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-16 18:52:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:15,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-16 18:52:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:15,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-16 18:52:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:15,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-16 18:52:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:15,299 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:52:15,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:52:15,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849369544] [2023-12-16 18:52:15,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849369544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:52:15,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:52:15,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:52:15,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418413998] [2023-12-16 18:52:15,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:52:15,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:52:15,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:52:15,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:52:15,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:52:15,301 INFO L87 Difference]: Start difference. First operand 2120 states and 3389 transitions. Second operand has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:52:15,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:52:15,755 INFO L93 Difference]: Finished difference Result 3911 states and 6257 transitions. [2023-12-16 18:52:15,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:52:15,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 343 [2023-12-16 18:52:15,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:52:15,758 INFO L225 Difference]: With dead ends: 3911 [2023-12-16 18:52:15,758 INFO L226 Difference]: Without dead ends: 2129 [2023-12-16 18:52:15,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 18:52:15,762 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 1091 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 18:52:15,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 2579 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 18:52:15,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2023-12-16 18:52:15,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 2126. [2023-12-16 18:52:15,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 2089 states have (on average 1.59167065581618) internal successors, (3325), 2089 states have internal predecessors, (3325), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-16 18:52:15,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 3395 transitions. [2023-12-16 18:52:15,820 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 3395 transitions. Word has length 343 [2023-12-16 18:52:15,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:52:15,820 INFO L495 AbstractCegarLoop]: Abstraction has 2126 states and 3395 transitions. [2023-12-16 18:52:15,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:52:15,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 3395 transitions. [2023-12-16 18:52:15,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-12-16 18:52:15,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:52:15,824 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:15,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-16 18:52:15,824 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:52:15,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:52:15,825 INFO L85 PathProgramCache]: Analyzing trace with hash -712897847, now seen corresponding path program 1 times [2023-12-16 18:52:15,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:52:15,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339117487] [2023-12-16 18:52:15,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:52:15,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:52:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:16,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:52:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:16,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-16 18:52:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:16,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-16 18:52:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:16,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-16 18:52:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:16,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-16 18:52:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:16,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-16 18:52:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:16,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-12-16 18:52:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:16,432 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:52:16,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:52:16,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339117487] [2023-12-16 18:52:16,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339117487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:52:16,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:52:16,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:52:16,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028976552] [2023-12-16 18:52:16,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:52:16,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:52:16,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:52:16,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:52:16,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:52:16,435 INFO L87 Difference]: Start difference. First operand 2126 states and 3395 transitions. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:16,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:52:16,650 INFO L93 Difference]: Finished difference Result 5930 states and 9476 transitions. [2023-12-16 18:52:16,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 18:52:16,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 344 [2023-12-16 18:52:16,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:52:16,657 INFO L225 Difference]: With dead ends: 5930 [2023-12-16 18:52:16,657 INFO L226 Difference]: Without dead ends: 4144 [2023-12-16 18:52:16,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 1 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 18:52:16,660 INFO L413 NwaCegarLoop]: 1311 mSDtfsCounter, 1876 mSDsluCounter, 3605 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 4916 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:52:16,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1879 Valid, 4916 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:52:16,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4144 states. [2023-12-16 18:52:16,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4144 to 2252. [2023-12-16 18:52:16,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2205 states have (on average 1.5868480725623584) internal successors, (3499), 2205 states have internal predecessors, (3499), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-16 18:52:16,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3589 transitions. [2023-12-16 18:52:16,744 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3589 transitions. Word has length 344 [2023-12-16 18:52:16,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:52:16,744 INFO L495 AbstractCegarLoop]: Abstraction has 2252 states and 3589 transitions. [2023-12-16 18:52:16,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:16,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3589 transitions. [2023-12-16 18:52:16,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-12-16 18:52:16,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:52:16,748 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:16,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-16 18:52:16,748 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:52:16,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:52:16,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1848842293, now seen corresponding path program 1 times [2023-12-16 18:52:16,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:52:16,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822193989] [2023-12-16 18:52:16,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:52:16,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:52:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:17,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:52:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:17,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-16 18:52:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:17,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-16 18:52:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:17,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-16 18:52:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:17,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-16 18:52:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:17,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-16 18:52:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:17,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-12-16 18:52:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:52:17,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:52:17,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822193989] [2023-12-16 18:52:17,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822193989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:52:17,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:52:17,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 18:52:17,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208085183] [2023-12-16 18:52:17,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:52:17,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 18:52:17,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:52:17,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 18:52:17,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:52:17,503 INFO L87 Difference]: Start difference. First operand 2252 states and 3589 transitions. Second operand has 7 states, 7 states have (on average 44.57142857142857) internal successors, (312), 7 states have internal predecessors, (312), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:18,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:52:18,147 INFO L93 Difference]: Finished difference Result 4395 states and 6989 transitions. [2023-12-16 18:52:18,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 18:52:18,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.57142857142857) internal successors, (312), 7 states have internal predecessors, (312), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 344 [2023-12-16 18:52:18,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:52:18,151 INFO L225 Difference]: With dead ends: 4395 [2023-12-16 18:52:18,151 INFO L226 Difference]: Without dead ends: 2455 [2023-12-16 18:52:18,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-16 18:52:18,154 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 3016 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3018 SdHoareTripleChecker+Valid, 2958 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:52:18,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3018 Valid, 2958 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 18:52:18,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2023-12-16 18:52:18,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2276. [2023-12-16 18:52:18,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2276 states, 2229 states have (on average 1.5751458052938538) internal successors, (3511), 2229 states have internal predecessors, (3511), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-16 18:52:18,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3601 transitions. [2023-12-16 18:52:18,236 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3601 transitions. Word has length 344 [2023-12-16 18:52:18,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:52:18,237 INFO L495 AbstractCegarLoop]: Abstraction has 2276 states and 3601 transitions. [2023-12-16 18:52:18,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.57142857142857) internal successors, (312), 7 states have internal predecessors, (312), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:18,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3601 transitions. [2023-12-16 18:52:18,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2023-12-16 18:52:18,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:52:18,240 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:18,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-16 18:52:18,241 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:52:18,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:52:18,241 INFO L85 PathProgramCache]: Analyzing trace with hash 553630655, now seen corresponding path program 1 times [2023-12-16 18:52:18,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:52:18,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632694920] [2023-12-16 18:52:18,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:52:18,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:52:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:19,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:52:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:19,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-16 18:52:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:19,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-16 18:52:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:19,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-16 18:52:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:19,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-16 18:52:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:19,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-16 18:52:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:19,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-16 18:52:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:19,253 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:52:19,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:52:19,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632694920] [2023-12-16 18:52:19,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632694920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:52:19,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:52:19,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 18:52:19,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196832506] [2023-12-16 18:52:19,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:52:19,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 18:52:19,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:52:19,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 18:52:19,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 18:52:19,256 INFO L87 Difference]: Start difference. First operand 2276 states and 3601 transitions. Second operand has 8 states, 8 states have (on average 39.125) internal successors, (313), 8 states have internal predecessors, (313), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:19,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:52:19,650 INFO L93 Difference]: Finished difference Result 8182 states and 12979 transitions. [2023-12-16 18:52:19,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 18:52:19,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 39.125) internal successors, (313), 8 states have internal predecessors, (313), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 345 [2023-12-16 18:52:19,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:52:19,658 INFO L225 Difference]: With dead ends: 8182 [2023-12-16 18:52:19,658 INFO L226 Difference]: Without dead ends: 6254 [2023-12-16 18:52:19,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-16 18:52:19,661 INFO L413 NwaCegarLoop]: 2038 mSDtfsCounter, 3745 mSDsluCounter, 7582 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3756 SdHoareTripleChecker+Valid, 9620 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 18:52:19,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3756 Valid, 9620 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 18:52:19,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6254 states. [2023-12-16 18:52:19,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6254 to 2697. [2023-12-16 18:52:19,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2697 states, 2625 states have (on average 1.5607619047619048) internal successors, (4097), 2625 states have internal predecessors, (4097), 70 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-16 18:52:19,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 4237 transitions. [2023-12-16 18:52:19,775 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 4237 transitions. Word has length 345 [2023-12-16 18:52:19,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:52:19,775 INFO L495 AbstractCegarLoop]: Abstraction has 2697 states and 4237 transitions. [2023-12-16 18:52:19,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 39.125) internal successors, (313), 8 states have internal predecessors, (313), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 4237 transitions. [2023-12-16 18:52:19,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-16 18:52:19,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:52:19,779 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:19,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-16 18:52:19,780 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:52:19,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:52:19,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1696513841, now seen corresponding path program 1 times [2023-12-16 18:52:19,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:52:19,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068782077] [2023-12-16 18:52:19,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:52:19,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:52:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:20,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:52:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:20,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-16 18:52:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:20,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-16 18:52:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:20,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-16 18:52:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:20,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 18:52:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:20,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 18:52:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:20,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-16 18:52:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:52:20,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:52:20,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068782077] [2023-12-16 18:52:20,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068782077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:52:20,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:52:20,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:52:20,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111898275] [2023-12-16 18:52:20,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:52:20,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:52:20,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:52:20,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:52:20,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:52:20,240 INFO L87 Difference]: Start difference. First operand 2697 states and 4237 transitions. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:20,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:52:20,703 INFO L93 Difference]: Finished difference Result 4690 states and 7389 transitions. [2023-12-16 18:52:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:52:20,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 346 [2023-12-16 18:52:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:52:20,707 INFO L225 Difference]: With dead ends: 4690 [2023-12-16 18:52:20,707 INFO L226 Difference]: Without dead ends: 2721 [2023-12-16 18:52:20,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 18:52:20,710 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 1079 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 2578 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 18:52:20,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 2578 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 18:52:20,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2023-12-16 18:52:20,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 2713. [2023-12-16 18:52:20,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2641 states have (on average 1.557364634608103) internal successors, (4113), 2641 states have internal predecessors, (4113), 70 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-16 18:52:20,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 4253 transitions. [2023-12-16 18:52:20,820 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 4253 transitions. Word has length 346 [2023-12-16 18:52:20,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:52:20,821 INFO L495 AbstractCegarLoop]: Abstraction has 2713 states and 4253 transitions. [2023-12-16 18:52:20,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 18:52:20,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 4253 transitions. [2023-12-16 18:52:20,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-16 18:52:20,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:52:20,825 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:20,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-16 18:52:20,825 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:52:20,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:52:20,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2133344765, now seen corresponding path program 1 times [2023-12-16 18:52:20,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:52:20,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420667600] [2023-12-16 18:52:20,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:52:20,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:52:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:21,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:52:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:21,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-16 18:52:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:21,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-16 18:52:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:21,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-16 18:52:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:21,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-16 18:52:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:21,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-16 18:52:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:21,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-16 18:52:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:52:21,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:52:21,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420667600] [2023-12-16 18:52:21,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420667600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:52:21,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:52:21,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 18:52:21,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074231794] [2023-12-16 18:52:21,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:52:21,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 18:52:21,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:52:21,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 18:52:21,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:52:21,531 INFO L87 Difference]: Start difference. First operand 2713 states and 4253 transitions. Second operand has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:52:22,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:52:22,167 INFO L93 Difference]: Finished difference Result 2831 states and 4424 transitions. [2023-12-16 18:52:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 18:52:22,168 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 346 [2023-12-16 18:52:22,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:52:22,170 INFO L225 Difference]: With dead ends: 2831 [2023-12-16 18:52:22,170 INFO L226 Difference]: Without dead ends: 1778 [2023-12-16 18:52:22,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 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 18:52:22,171 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 1947 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1947 SdHoareTripleChecker+Valid, 2932 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:52:22,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1947 Valid, 2932 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 18:52:22,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2023-12-16 18:52:22,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1666. [2023-12-16 18:52:22,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1620 states have (on average 1.5506172839506174) internal successors, (2512), 1620 states have internal predecessors, (2512), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-16 18:52:22,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2600 transitions. [2023-12-16 18:52:22,229 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2600 transitions. Word has length 346 [2023-12-16 18:52:22,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:52:22,229 INFO L495 AbstractCegarLoop]: Abstraction has 1666 states and 2600 transitions. [2023-12-16 18:52:22,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:52:22,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2600 transitions. [2023-12-16 18:52:22,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-16 18:52:22,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:52:22,233 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:22,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-16 18:52:22,233 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:52:22,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:52:22,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1909652033, now seen corresponding path program 1 times [2023-12-16 18:52:22,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:52:22,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670625849] [2023-12-16 18:52:22,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:52:22,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:52:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:23,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 18:52:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:23,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-16 18:52:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:23,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-16 18:52:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:23,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-16 18:52:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:23,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-16 18:52:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:23,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-16 18:52:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:23,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-16 18:52:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:52:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 18:52:23,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:52:23,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670625849] [2023-12-16 18:52:23,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670625849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:52:23,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:52:23,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 18:52:23,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417665164] [2023-12-16 18:52:23,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:52:23,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 18:52:23,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:52:23,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 18:52:23,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:52:23,170 INFO L87 Difference]: Start difference. First operand 1666 states and 2600 transitions. Second operand has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:52:23,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:52:23,857 INFO L93 Difference]: Finished difference Result 2846 states and 4442 transitions. [2023-12-16 18:52:23,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 18:52:23,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 346 [2023-12-16 18:52:23,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:52:23,860 INFO L225 Difference]: With dead ends: 2846 [2023-12-16 18:52:23,860 INFO L226 Difference]: Without dead ends: 1869 [2023-12-16 18:52:23,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 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 18:52:23,862 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 1932 mSDsluCounter, 2071 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1932 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 18:52:23,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1932 Valid, 3004 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 18:52:23,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2023-12-16 18:52:23,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1669. [2023-12-16 18:52:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1623 states have (on average 1.5495995070856439) internal successors, (2515), 1623 states have internal predecessors, (2515), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-16 18:52:23,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2603 transitions. [2023-12-16 18:52:23,930 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2603 transitions. Word has length 346 [2023-12-16 18:52:23,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:52:23,931 INFO L495 AbstractCegarLoop]: Abstraction has 1669 states and 2603 transitions. [2023-12-16 18:52:23,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 18:52:23,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2603 transitions. [2023-12-16 18:52:23,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-16 18:52:23,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:52:23,936 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:23,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-16 18:52:23,936 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:52:23,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:52:23,936 INFO L85 PathProgramCache]: Analyzing trace with hash 417510337, now seen corresponding path program 1 times [2023-12-16 18:52:23,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:52:23,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907231947] [2023-12-16 18:52:23,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:52:23,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Received shutdown request... [2023-12-16 18:52:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2023-12-16 18:52:24,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 18:52:24,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-16 18:52:24,151 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 347 with TraceHistMax 7,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleSmtInterpolCraig [907231947] and IpTcStrategyModuleZ3 [1049937470]. [2023-12-16 18:52:24,155 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] [2023-12-16 18:52:24,158 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 18:52:24,160 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 18:52:24,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:52:24 BoogieIcfgContainer [2023-12-16 18:52:24,164 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 18:52:24,164 INFO L158 Benchmark]: Toolchain (without parser) took 49100.74ms. Allocated memory was 216.0MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 148.7MB in the beginning and 813.1MB in the end (delta: -664.3MB). Peak memory consumption was 886.2MB. Max. memory is 8.0GB. [2023-12-16 18:52:24,164 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 216.0MB. Free memory is still 166.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 18:52:24,166 INFO L158 Benchmark]: CACSL2BoogieTranslator took 690.34ms. Allocated memory was 216.0MB in the beginning and 267.4MB in the end (delta: 51.4MB). Free memory was 148.5MB in the beginning and 194.3MB in the end (delta: -45.7MB). Peak memory consumption was 17.1MB. Max. memory is 8.0GB. [2023-12-16 18:52:24,167 INFO L158 Benchmark]: Boogie Procedure Inliner took 291.14ms. Allocated memory is still 267.4MB. Free memory was 194.3MB in the beginning and 178.5MB in the end (delta: 15.8MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. [2023-12-16 18:52:24,167 INFO L158 Benchmark]: Boogie Preprocessor took 418.19ms. Allocated memory is still 267.4MB. Free memory was 178.5MB in the beginning and 160.2MB in the end (delta: 18.2MB). Peak memory consumption was 36.6MB. Max. memory is 8.0GB. [2023-12-16 18:52:24,171 INFO L158 Benchmark]: RCFGBuilder took 2188.91ms. Allocated memory was 267.4MB in the beginning and 460.3MB in the end (delta: 192.9MB). Free memory was 159.8MB in the beginning and 258.8MB in the end (delta: -99.0MB). Peak memory consumption was 101.0MB. Max. memory is 8.0GB. [2023-12-16 18:52:24,171 INFO L158 Benchmark]: TraceAbstraction took 45506.73ms. Allocated memory was 460.3MB in the beginning and 1.8GB in the end (delta: 1.3GB). Free memory was 258.3MB in the beginning and 813.1MB in the end (delta: -554.8MB). Peak memory consumption was 750.7MB. Max. memory is 8.0GB. [2023-12-16 18:52:24,172 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 216.0MB. Free memory is still 166.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 690.34ms. Allocated memory was 216.0MB in the beginning and 267.4MB in the end (delta: 51.4MB). Free memory was 148.5MB in the beginning and 194.3MB in the end (delta: -45.7MB). Peak memory consumption was 17.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 291.14ms. Allocated memory is still 267.4MB. Free memory was 194.3MB in the beginning and 178.5MB in the end (delta: 15.8MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 418.19ms. Allocated memory is still 267.4MB. Free memory was 178.5MB in the beginning and 160.2MB in the end (delta: 18.2MB). Peak memory consumption was 36.6MB. Max. memory is 8.0GB. * RCFGBuilder took 2188.91ms. Allocated memory was 267.4MB in the beginning and 460.3MB in the end (delta: 192.9MB). Free memory was 159.8MB in the beginning and 258.8MB in the end (delta: -99.0MB). Peak memory consumption was 101.0MB. Max. memory is 8.0GB. * TraceAbstraction took 45506.73ms. Allocated memory was 460.3MB in the beginning and 1.8GB in the end (delta: 1.3GB). Free memory was 258.3MB in the beginning and 813.1MB in the end (delta: -554.8MB). Peak memory consumption was 750.7MB. 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 347 with TraceHistMax 7,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleSmtInterpolCraig [907231947] and IpTcStrategyModuleZ3 [1049937470]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 683 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 45.5s, OverallIterations: 34, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 14.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 65171 SdHoareTripleChecker+Valid, 11.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65052 mSDsluCounter, 135364 SdHoareTripleChecker+Invalid, 9.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 96524 mSDsCounter, 323 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17814 IncrementalHoareTripleChecker+Invalid, 18137 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 323 mSolverCounterUnsat, 38840 mSDtfsCounter, 17814 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 730 GetRequests, 534 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2713occurred in iteration=31, InterpolantAutomatonStates: 208, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 33 MinimizatonAttempts, 17703 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 8.4s SatisfiabilityAnalysisTime, 19.3s InterpolantComputationTime, 11132 NumberOfCodeBlocks, 11132 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 11099 ConstructedInterpolants, 0 QuantifiedInterpolants, 31073 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 33 InterpolantComputations, 33 PerfectInterpolantSequences, 2772/2772 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