/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-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:50:20,058 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:50:20,139 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:50:20,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:50:20,144 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:50:20,177 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:50:20,177 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:50:20,178 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:50:20,178 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:50:20,182 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:50:20,182 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:50:20,183 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:50:20,183 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:50:20,184 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:50:20,184 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:50:20,185 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:50:20,185 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:50:20,185 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:50:20,186 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:50:20,186 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:50:20,186 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:50:20,186 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:50:20,187 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:50:20,187 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:50:20,187 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:50:20,187 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:50:20,188 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:50:20,188 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:50:20,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:50:20,189 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:50:20,189 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:50:20,190 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:50:20,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:50:20,190 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:50:20,190 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:50:20,190 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:50:20,191 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:50:20,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:50:20,191 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:50:20,191 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:50:20,191 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:50:20,192 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:50:20,192 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:50:20,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:50:20,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:50:20,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:50:20,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:50:20,446 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:50:20,447 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:50:20,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2023-12-16 04:50:21,619 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:50:21,857 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:50:21,857 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2023-12-16 04:50:21,868 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/707387315/0c8ab35a19bc4df0a0b2c243f93c24e1/FLAG04e0c7c2e [2023-12-16 04:50:21,883 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/707387315/0c8ab35a19bc4df0a0b2c243f93c24e1 [2023-12-16 04:50:21,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:50:21,886 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:50:21,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:50:21,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:50:21,892 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:50:21,892 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:50:21" (1/1) ... [2023-12-16 04:50:21,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb085df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:21, skipping insertion in model container [2023-12-16 04:50:21,893 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:50:21" (1/1) ... [2023-12-16 04:50:21,938 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:50:22,094 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c[6448,6461] [2023-12-16 04:50:22,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:50:22,164 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:50:22,208 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c[6448,6461] [2023-12-16 04:50:22,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:50:22,279 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:50:22,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:22 WrapperNode [2023-12-16 04:50:22,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:50:22,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:50:22,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:50:22,281 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:50:22,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:22" (1/1) ... [2023-12-16 04:50:22,297 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:22" (1/1) ... [2023-12-16 04:50:22,343 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 637 [2023-12-16 04:50:22,344 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:50:22,345 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:50:22,345 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:50:22,345 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:50:22,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:22" (1/1) ... [2023-12-16 04:50:22,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:22" (1/1) ... [2023-12-16 04:50:22,361 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:22" (1/1) ... [2023-12-16 04:50:22,375 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 04:50:22,375 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:22" (1/1) ... [2023-12-16 04:50:22,375 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:22" (1/1) ... [2023-12-16 04:50:22,381 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:22" (1/1) ... [2023-12-16 04:50:22,386 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:22" (1/1) ... [2023-12-16 04:50:22,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:22" (1/1) ... [2023-12-16 04:50:22,390 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:22" (1/1) ... [2023-12-16 04:50:22,392 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:50:22,393 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:50:22,393 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:50:22,393 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:50:22,394 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:22" (1/1) ... [2023-12-16 04:50:22,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:50:22,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:22,438 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 04:50:22,456 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 04:50:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:50:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:50:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:50:22,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:50:22,512 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:50:22,514 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:50:23,127 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:50:23,146 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:50:23,146 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 04:50:23,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:50:23 BoogieIcfgContainer [2023-12-16 04:50:23,147 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:50:23,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:50:23,149 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:50:23,152 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:50:23,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:50:21" (1/3) ... [2023-12-16 04:50:23,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1394ab3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:50:23, skipping insertion in model container [2023-12-16 04:50:23,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:22" (2/3) ... [2023-12-16 04:50:23,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1394ab3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:50:23, skipping insertion in model container [2023-12-16 04:50:23,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:50:23" (3/3) ... [2023-12-16 04:50:23,154 INFO L112 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+nlh-reducer.c [2023-12-16 04:50:23,169 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:50:23,169 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:50:23,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:50:23,216 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;@1bf1f0c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:50:23,216 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:50:23,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 140 states have (on average 1.9857142857142858) internal successors, (278), 141 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:23,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:23,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:23,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:23,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:23,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:23,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2065817410, now seen corresponding path program 1 times [2023-12-16 04:50:23,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:23,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446855165] [2023-12-16 04:50:23,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:23,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:23,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:23,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446855165] [2023-12-16 04:50:23,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446855165] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:23,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:23,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:50:23,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004062315] [2023-12-16 04:50:23,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:23,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:50:23,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:23,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:50:23,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:50:23,741 INFO L87 Difference]: Start difference. First operand has 142 states, 140 states have (on average 1.9857142857142858) internal successors, (278), 141 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:24,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:24,109 INFO L93 Difference]: Finished difference Result 281 states and 551 transitions. [2023-12-16 04:50:24,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:50:24,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:24,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:24,122 INFO L225 Difference]: With dead ends: 281 [2023-12-16 04:50:24,122 INFO L226 Difference]: Without dead ends: 140 [2023-12-16 04:50:24,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:50:24,129 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:24,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 274 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:50:24,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-16 04:50:24,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-12-16 04:50:24,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.4892086330935252) internal successors, (207), 139 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:24,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 207 transitions. [2023-12-16 04:50:24,170 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 207 transitions. Word has length 138 [2023-12-16 04:50:24,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:24,170 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 207 transitions. [2023-12-16 04:50:24,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:24,171 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 207 transitions. [2023-12-16 04:50:24,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:24,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:24,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:24,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 04:50:24,176 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:24,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:24,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1380941303, now seen corresponding path program 1 times [2023-12-16 04:50:24,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:24,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052575398] [2023-12-16 04:50:24,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:24,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:24,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:24,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052575398] [2023-12-16 04:50:24,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052575398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:24,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:24,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:50:24,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928918497] [2023-12-16 04:50:24,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:24,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:50:24,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:24,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:50:24,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:50:24,387 INFO L87 Difference]: Start difference. First operand 140 states and 207 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:24,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:24,783 INFO L93 Difference]: Finished difference Result 405 states and 604 transitions. [2023-12-16 04:50:24,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:50:24,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:24,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:24,786 INFO L225 Difference]: With dead ends: 405 [2023-12-16 04:50:24,786 INFO L226 Difference]: Without dead ends: 272 [2023-12-16 04:50:24,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:50:24,788 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 68 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:24,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 77 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:50:24,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-12-16 04:50:24,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2023-12-16 04:50:24,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 1.2546125461254614) internal successors, (340), 271 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:24,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 340 transitions. [2023-12-16 04:50:24,807 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 340 transitions. Word has length 138 [2023-12-16 04:50:24,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:24,807 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 340 transitions. [2023-12-16 04:50:24,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:24,808 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 340 transitions. [2023-12-16 04:50:24,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:24,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:24,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:24,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 04:50:24,811 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:24,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:24,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1091579007, now seen corresponding path program 1 times [2023-12-16 04:50:24,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:24,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330147096] [2023-12-16 04:50:24,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:24,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:25,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:25,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:25,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330147096] [2023-12-16 04:50:25,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330147096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:25,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:25,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:50:25,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520947976] [2023-12-16 04:50:25,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:25,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:50:25,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:25,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:50:25,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:50:25,027 INFO L87 Difference]: Start difference. First operand 272 states and 340 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:25,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:25,294 INFO L93 Difference]: Finished difference Result 401 states and 469 transitions. [2023-12-16 04:50:25,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:50:25,295 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:25,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:25,296 INFO L225 Difference]: With dead ends: 401 [2023-12-16 04:50:25,296 INFO L226 Difference]: Without dead ends: 266 [2023-12-16 04:50:25,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:50:25,298 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:25,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 199 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:50:25,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-12-16 04:50:25,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2023-12-16 04:50:25,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.2490566037735849) internal successors, (331), 265 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:25,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 331 transitions. [2023-12-16 04:50:25,314 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 331 transitions. Word has length 138 [2023-12-16 04:50:25,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:25,317 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 331 transitions. [2023-12-16 04:50:25,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 331 transitions. [2023-12-16 04:50:25,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:25,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:25,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:25,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 04:50:25,328 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:25,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:25,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1605575413, now seen corresponding path program 1 times [2023-12-16 04:50:25,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:25,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055940050] [2023-12-16 04:50:25,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:25,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:25,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:25,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055940050] [2023-12-16 04:50:25,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055940050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:25,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:25,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 04:50:25,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710660022] [2023-12-16 04:50:25,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:25,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:50:25,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:25,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:50:25,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:50:25,491 INFO L87 Difference]: Start difference. First operand 266 states and 331 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:25,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:25,735 INFO L93 Difference]: Finished difference Result 393 states and 458 transitions. [2023-12-16 04:50:25,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:50:25,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:25,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:25,737 INFO L225 Difference]: With dead ends: 393 [2023-12-16 04:50:25,737 INFO L226 Difference]: Without dead ends: 264 [2023-12-16 04:50:25,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:50:25,745 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:25,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:50:25,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-16 04:50:25,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-12-16 04:50:25,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.247148288973384) internal successors, (328), 263 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:25,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 328 transitions. [2023-12-16 04:50:25,755 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 328 transitions. Word has length 138 [2023-12-16 04:50:25,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:25,755 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 328 transitions. [2023-12-16 04:50:25,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:25,755 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 328 transitions. [2023-12-16 04:50:25,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:25,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:25,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:25,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 04:50:25,762 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:25,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:25,763 INFO L85 PathProgramCache]: Analyzing trace with hash 72262183, now seen corresponding path program 1 times [2023-12-16 04:50:25,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:25,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387758576] [2023-12-16 04:50:25,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:25,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:25,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:25,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387758576] [2023-12-16 04:50:25,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387758576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:25,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:25,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 04:50:25,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138757032] [2023-12-16 04:50:26,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:26,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:50:26,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:26,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:50:26,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:50:26,001 INFO L87 Difference]: Start difference. First operand 264 states and 328 transitions. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:26,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:26,240 INFO L93 Difference]: Finished difference Result 385 states and 449 transitions. [2023-12-16 04:50:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 04:50:26,240 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:26,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:26,241 INFO L225 Difference]: With dead ends: 385 [2023-12-16 04:50:26,241 INFO L226 Difference]: Without dead ends: 258 [2023-12-16 04:50:26,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:50:26,243 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:26,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 187 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:50:26,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-12-16 04:50:26,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2023-12-16 04:50:26,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.2412451361867705) internal successors, (319), 257 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:26,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 319 transitions. [2023-12-16 04:50:26,251 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 319 transitions. Word has length 138 [2023-12-16 04:50:26,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:26,251 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 319 transitions. [2023-12-16 04:50:26,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:26,252 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 319 transitions. [2023-12-16 04:50:26,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:26,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:26,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:26,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 04:50:26,253 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:26,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:26,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1119682688, now seen corresponding path program 1 times [2023-12-16 04:50:26,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:26,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216453901] [2023-12-16 04:50:26,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:26,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:26,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:26,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:26,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216453901] [2023-12-16 04:50:26,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216453901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:26,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:26,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-16 04:50:26,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30992318] [2023-12-16 04:50:26,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:26,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 04:50:26,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:26,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 04:50:26,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-16 04:50:26,514 INFO L87 Difference]: Start difference. First operand 258 states and 319 transitions. Second operand has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 12 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:26,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:26,818 INFO L93 Difference]: Finished difference Result 373 states and 434 transitions. [2023-12-16 04:50:26,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 04:50:26,819 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 12 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:26,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:26,820 INFO L225 Difference]: With dead ends: 373 [2023-12-16 04:50:26,820 INFO L226 Difference]: Without dead ends: 252 [2023-12-16 04:50:26,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-16 04:50:26,821 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:26,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 180 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:50:26,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-16 04:50:26,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2023-12-16 04:50:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.2350597609561753) internal successors, (310), 251 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 310 transitions. [2023-12-16 04:50:26,827 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 310 transitions. Word has length 138 [2023-12-16 04:50:26,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:26,828 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 310 transitions. [2023-12-16 04:50:26,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 12 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:26,828 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 310 transitions. [2023-12-16 04:50:26,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:26,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:26,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:26,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 04:50:26,830 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:26,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:26,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1980321201, now seen corresponding path program 1 times [2023-12-16 04:50:26,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:26,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667964813] [2023-12-16 04:50:26,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:26,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:27,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:27,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667964813] [2023-12-16 04:50:27,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667964813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:27,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:27,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-16 04:50:27,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981932130] [2023-12-16 04:50:27,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:27,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 04:50:27,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:27,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 04:50:27,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2023-12-16 04:50:27,130 INFO L87 Difference]: Start difference. First operand 252 states and 310 transitions. Second operand has 15 states, 15 states have (on average 9.2) internal successors, (138), 14 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:27,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:27,569 INFO L93 Difference]: Finished difference Result 363 states and 421 transitions. [2023-12-16 04:50:27,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 04:50:27,570 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.2) internal successors, (138), 14 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:27,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:27,571 INFO L225 Difference]: With dead ends: 363 [2023-12-16 04:50:27,571 INFO L226 Difference]: Without dead ends: 248 [2023-12-16 04:50:27,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2023-12-16 04:50:27,572 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:27,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 178 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:50:27,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-12-16 04:50:27,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2023-12-16 04:50:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.2307692307692308) internal successors, (304), 247 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:27,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 304 transitions. [2023-12-16 04:50:27,577 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 304 transitions. Word has length 138 [2023-12-16 04:50:27,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:27,577 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 304 transitions. [2023-12-16 04:50:27,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.2) internal successors, (138), 14 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:27,577 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 304 transitions. [2023-12-16 04:50:27,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:27,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:27,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:27,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 04:50:27,579 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:27,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:27,579 INFO L85 PathProgramCache]: Analyzing trace with hash 443614953, now seen corresponding path program 1 times [2023-12-16 04:50:27,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:27,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386435981] [2023-12-16 04:50:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:27,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:27,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:27,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386435981] [2023-12-16 04:50:27,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386435981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:27,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:27,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-16 04:50:27,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326698393] [2023-12-16 04:50:27,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:27,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 04:50:27,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:27,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 04:50:27,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2023-12-16 04:50:27,959 INFO L87 Difference]: Start difference. First operand 248 states and 304 transitions. Second operand has 19 states, 19 states have (on average 7.2631578947368425) internal successors, (138), 18 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:28,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:28,370 INFO L93 Difference]: Finished difference Result 351 states and 407 transitions. [2023-12-16 04:50:28,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 04:50:28,371 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.2631578947368425) internal successors, (138), 18 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:28,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:28,372 INFO L225 Difference]: With dead ends: 351 [2023-12-16 04:50:28,372 INFO L226 Difference]: Without dead ends: 240 [2023-12-16 04:50:28,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2023-12-16 04:50:28,373 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:28,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 166 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:50:28,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-12-16 04:50:28,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2023-12-16 04:50:28,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.2217573221757323) internal successors, (292), 239 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:28,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 292 transitions. [2023-12-16 04:50:28,379 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 292 transitions. Word has length 138 [2023-12-16 04:50:28,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:28,379 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 292 transitions. [2023-12-16 04:50:28,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.2631578947368425) internal successors, (138), 18 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:28,379 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 292 transitions. [2023-12-16 04:50:28,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:28,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:28,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:28,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 04:50:28,381 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:28,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:28,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1394752007, now seen corresponding path program 1 times [2023-12-16 04:50:28,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:28,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951399321] [2023-12-16 04:50:28,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:28,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:28,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:28,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951399321] [2023-12-16 04:50:28,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951399321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:28,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:28,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-16 04:50:28,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574887928] [2023-12-16 04:50:28,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:28,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-16 04:50:28,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:28,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-16 04:50:28,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2023-12-16 04:50:28,829 INFO L87 Difference]: Start difference. First operand 240 states and 292 transitions. Second operand has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:29,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:29,263 INFO L93 Difference]: Finished difference Result 337 states and 389 transitions. [2023-12-16 04:50:29,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 04:50:29,263 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:29,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:29,264 INFO L225 Difference]: With dead ends: 337 [2023-12-16 04:50:29,265 INFO L226 Difference]: Without dead ends: 234 [2023-12-16 04:50:29,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2023-12-16 04:50:29,266 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:29,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:50:29,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-12-16 04:50:29,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2023-12-16 04:50:29,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.2145922746781115) internal successors, (283), 233 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:29,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 283 transitions. [2023-12-16 04:50:29,270 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 283 transitions. Word has length 138 [2023-12-16 04:50:29,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:29,270 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 283 transitions. [2023-12-16 04:50:29,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:29,270 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 283 transitions. [2023-12-16 04:50:29,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:29,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:29,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:29,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 04:50:29,271 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:29,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:29,272 INFO L85 PathProgramCache]: Analyzing trace with hash 326618323, now seen corresponding path program 1 times [2023-12-16 04:50:29,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:29,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21732355] [2023-12-16 04:50:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:29,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:29,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:29,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:29,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21732355] [2023-12-16 04:50:29,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21732355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:29,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:29,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-16 04:50:29,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418218417] [2023-12-16 04:50:29,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:29,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 04:50:29,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:29,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 04:50:29,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2023-12-16 04:50:29,722 INFO L87 Difference]: Start difference. First operand 234 states and 283 transitions. Second operand has 23 states, 23 states have (on average 6.0) internal successors, (138), 22 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:30,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:30,113 INFO L93 Difference]: Finished difference Result 329 states and 378 transitions. [2023-12-16 04:50:30,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-16 04:50:30,114 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.0) internal successors, (138), 22 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:30,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:30,115 INFO L225 Difference]: With dead ends: 329 [2023-12-16 04:50:30,115 INFO L226 Difference]: Without dead ends: 232 [2023-12-16 04:50:30,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2023-12-16 04:50:30,116 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:30,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:50:30,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-12-16 04:50:30,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2023-12-16 04:50:30,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.2121212121212122) internal successors, (280), 231 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:30,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 280 transitions. [2023-12-16 04:50:30,121 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 280 transitions. Word has length 138 [2023-12-16 04:50:30,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:30,121 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 280 transitions. [2023-12-16 04:50:30,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.0) internal successors, (138), 22 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:30,121 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 280 transitions. [2023-12-16 04:50:30,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:30,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:30,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:30,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 04:50:30,122 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:30,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:30,123 INFO L85 PathProgramCache]: Analyzing trace with hash -707495457, now seen corresponding path program 1 times [2023-12-16 04:50:30,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:30,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787555319] [2023-12-16 04:50:30,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:30,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:30,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:30,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:30,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787555319] [2023-12-16 04:50:30,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787555319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:30,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:30,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2023-12-16 04:50:30,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346593654] [2023-12-16 04:50:30,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:30,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 04:50:30,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:30,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 04:50:30,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2023-12-16 04:50:30,631 INFO L87 Difference]: Start difference. First operand 232 states and 280 transitions. Second operand has 26 states, 26 states have (on average 5.3076923076923075) internal successors, (138), 25 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:30,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:30,834 INFO L93 Difference]: Finished difference Result 321 states and 369 transitions. [2023-12-16 04:50:30,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-16 04:50:30,834 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.3076923076923075) internal successors, (138), 25 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:30,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:30,836 INFO L225 Difference]: With dead ends: 321 [2023-12-16 04:50:30,836 INFO L226 Difference]: Without dead ends: 226 [2023-12-16 04:50:30,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2023-12-16 04:50:30,837 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:30,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:50:30,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-16 04:50:30,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2023-12-16 04:50:30,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.2044444444444444) internal successors, (271), 225 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:30,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 271 transitions. [2023-12-16 04:50:30,841 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 271 transitions. Word has length 138 [2023-12-16 04:50:30,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:30,842 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 271 transitions. [2023-12-16 04:50:30,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.3076923076923075) internal successors, (138), 25 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 271 transitions. [2023-12-16 04:50:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:30,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:30,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:30,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 04:50:30,844 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:30,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:30,845 INFO L85 PathProgramCache]: Analyzing trace with hash -270620632, now seen corresponding path program 1 times [2023-12-16 04:50:30,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:30,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104543615] [2023-12-16 04:50:30,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:30,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:31,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:31,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:31,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104543615] [2023-12-16 04:50:31,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104543615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:31,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:31,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2023-12-16 04:50:31,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224148952] [2023-12-16 04:50:31,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:31,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-16 04:50:31,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:31,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-16 04:50:31,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2023-12-16 04:50:31,557 INFO L87 Difference]: Start difference. First operand 226 states and 271 transitions. Second operand has 29 states, 29 states have (on average 4.758620689655173) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:31,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:31,838 INFO L93 Difference]: Finished difference Result 309 states and 354 transitions. [2023-12-16 04:50:31,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-16 04:50:31,839 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.758620689655173) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:31,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:31,840 INFO L225 Difference]: With dead ends: 309 [2023-12-16 04:50:31,840 INFO L226 Difference]: Without dead ends: 220 [2023-12-16 04:50:31,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2023-12-16 04:50:31,841 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:31,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:50:31,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-16 04:50:31,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2023-12-16 04:50:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.1963470319634704) internal successors, (262), 219 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:31,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 262 transitions. [2023-12-16 04:50:31,846 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 262 transitions. Word has length 138 [2023-12-16 04:50:31,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:31,846 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 262 transitions. [2023-12-16 04:50:31,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.758620689655173) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 262 transitions. [2023-12-16 04:50:31,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:31,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:31,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:31,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 04:50:31,848 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:31,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:31,848 INFO L85 PathProgramCache]: Analyzing trace with hash 891628695, now seen corresponding path program 1 times [2023-12-16 04:50:31,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:31,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652657098] [2023-12-16 04:50:31,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:31,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:32,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:32,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:32,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652657098] [2023-12-16 04:50:32,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652657098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:32,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:32,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2023-12-16 04:50:32,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971815144] [2023-12-16 04:50:32,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:32,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-16 04:50:32,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:32,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-16 04:50:32,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2023-12-16 04:50:32,481 INFO L87 Difference]: Start difference. First operand 220 states and 262 transitions. Second operand has 31 states, 31 states have (on average 4.451612903225806) internal successors, (138), 30 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:32,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:32,750 INFO L93 Difference]: Finished difference Result 299 states and 341 transitions. [2023-12-16 04:50:32,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-16 04:50:32,751 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.451612903225806) internal successors, (138), 30 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:32,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:32,751 INFO L225 Difference]: With dead ends: 299 [2023-12-16 04:50:32,752 INFO L226 Difference]: Without dead ends: 216 [2023-12-16 04:50:32,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2023-12-16 04:50:32,753 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:32,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:50:32,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-12-16 04:50:32,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2023-12-16 04:50:32,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.1906976744186046) internal successors, (256), 215 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:32,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 256 transitions. [2023-12-16 04:50:32,757 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 256 transitions. Word has length 138 [2023-12-16 04:50:32,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:32,757 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 256 transitions. [2023-12-16 04:50:32,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.451612903225806) internal successors, (138), 30 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:32,757 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 256 transitions. [2023-12-16 04:50:32,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:32,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:32,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:32,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 04:50:32,759 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:32,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:32,759 INFO L85 PathProgramCache]: Analyzing trace with hash 866190961, now seen corresponding path program 1 times [2023-12-16 04:50:32,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:32,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881069175] [2023-12-16 04:50:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:32,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:33,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:33,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:33,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881069175] [2023-12-16 04:50:33,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881069175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:33,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:33,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2023-12-16 04:50:33,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605040634] [2023-12-16 04:50:33,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:33,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-16 04:50:33,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:33,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-16 04:50:33,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 04:50:33,538 INFO L87 Difference]: Start difference. First operand 216 states and 256 transitions. Second operand has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:33,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:33,857 INFO L93 Difference]: Finished difference Result 287 states and 327 transitions. [2023-12-16 04:50:33,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-16 04:50:33,857 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:33,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:33,858 INFO L225 Difference]: With dead ends: 287 [2023-12-16 04:50:33,859 INFO L226 Difference]: Without dead ends: 208 [2023-12-16 04:50:33,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 04:50:33,860 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:33,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:50:33,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-12-16 04:50:33,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2023-12-16 04:50:33,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.178743961352657) internal successors, (244), 207 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:33,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 244 transitions. [2023-12-16 04:50:33,864 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 244 transitions. Word has length 138 [2023-12-16 04:50:33,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:33,864 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 244 transitions. [2023-12-16 04:50:33,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:33,864 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 244 transitions. [2023-12-16 04:50:33,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:33,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:33,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:33,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 04:50:33,866 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:33,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:33,866 INFO L85 PathProgramCache]: Analyzing trace with hash -309703311, now seen corresponding path program 1 times [2023-12-16 04:50:33,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:33,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975977733] [2023-12-16 04:50:33,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:33,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:34,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:34,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975977733] [2023-12-16 04:50:34,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975977733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:34,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:34,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2023-12-16 04:50:34,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849804471] [2023-12-16 04:50:34,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:34,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-16 04:50:34,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:34,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-16 04:50:34,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2023-12-16 04:50:34,718 INFO L87 Difference]: Start difference. First operand 208 states and 244 transitions. Second operand has 38 states, 38 states have (on average 3.6315789473684212) internal successors, (138), 37 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:35,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:35,050 INFO L93 Difference]: Finished difference Result 273 states and 309 transitions. [2023-12-16 04:50:35,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-16 04:50:35,052 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.6315789473684212) internal successors, (138), 37 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:35,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:35,053 INFO L225 Difference]: With dead ends: 273 [2023-12-16 04:50:35,054 INFO L226 Difference]: Without dead ends: 202 [2023-12-16 04:50:35,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2023-12-16 04:50:35,055 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:35,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:50:35,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-12-16 04:50:35,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2023-12-16 04:50:35,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.1691542288557213) internal successors, (235), 201 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:35,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 235 transitions. [2023-12-16 04:50:35,058 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 235 transitions. Word has length 138 [2023-12-16 04:50:35,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:35,059 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 235 transitions. [2023-12-16 04:50:35,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.6315789473684212) internal successors, (138), 37 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:35,059 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 235 transitions. [2023-12-16 04:50:35,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:35,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:35,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:35,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 04:50:35,060 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:35,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:35,061 INFO L85 PathProgramCache]: Analyzing trace with hash -967585381, now seen corresponding path program 1 times [2023-12-16 04:50:35,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:35,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435876687] [2023-12-16 04:50:35,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:35,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:35,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:35,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435876687] [2023-12-16 04:50:35,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435876687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:35,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:35,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2023-12-16 04:50:35,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131714702] [2023-12-16 04:50:35,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:35,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-16 04:50:35,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:35,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-16 04:50:35,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2023-12-16 04:50:35,924 INFO L87 Difference]: Start difference. First operand 202 states and 235 transitions. Second operand has 39 states, 39 states have (on average 3.5384615384615383) internal successors, (138), 38 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:36,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:36,243 INFO L93 Difference]: Finished difference Result 265 states and 298 transitions. [2023-12-16 04:50:36,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-16 04:50:36,243 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.5384615384615383) internal successors, (138), 38 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:36,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:36,244 INFO L225 Difference]: With dead ends: 265 [2023-12-16 04:50:36,244 INFO L226 Difference]: Without dead ends: 200 [2023-12-16 04:50:36,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2023-12-16 04:50:36,245 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:36,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 104 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:50:36,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-12-16 04:50:36,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2023-12-16 04:50:36,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.1658291457286432) internal successors, (232), 199 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:36,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 232 transitions. [2023-12-16 04:50:36,250 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 232 transitions. Word has length 138 [2023-12-16 04:50:36,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:36,250 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 232 transitions. [2023-12-16 04:50:36,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.5384615384615383) internal successors, (138), 38 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:36,250 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 232 transitions. [2023-12-16 04:50:36,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:36,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:36,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:36,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 04:50:36,252 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:36,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:36,252 INFO L85 PathProgramCache]: Analyzing trace with hash -511514985, now seen corresponding path program 1 times [2023-12-16 04:50:36,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:36,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904658026] [2023-12-16 04:50:36,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:36,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:37,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:37,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:37,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904658026] [2023-12-16 04:50:37,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904658026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:37,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:37,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2023-12-16 04:50:37,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748905448] [2023-12-16 04:50:37,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:37,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-16 04:50:37,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:37,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-16 04:50:37,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2023-12-16 04:50:37,194 INFO L87 Difference]: Start difference. First operand 200 states and 232 transitions. Second operand has 42 states, 42 states have (on average 3.2857142857142856) internal successors, (138), 41 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:37,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:37,437 INFO L93 Difference]: Finished difference Result 257 states and 289 transitions. [2023-12-16 04:50:37,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-16 04:50:37,438 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.2857142857142856) internal successors, (138), 41 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:37,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:37,439 INFO L225 Difference]: With dead ends: 257 [2023-12-16 04:50:37,439 INFO L226 Difference]: Without dead ends: 194 [2023-12-16 04:50:37,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2023-12-16 04:50:37,440 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:37,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 91 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:50:37,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-16 04:50:37,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-12-16 04:50:37,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.1554404145077721) internal successors, (223), 193 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:37,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 223 transitions. [2023-12-16 04:50:37,444 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 223 transitions. Word has length 138 [2023-12-16 04:50:37,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:37,444 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 223 transitions. [2023-12-16 04:50:37,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.2857142857142856) internal successors, (138), 41 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:37,444 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 223 transitions. [2023-12-16 04:50:37,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:37,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:37,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:37,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 04:50:37,446 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:37,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:37,446 INFO L85 PathProgramCache]: Analyzing trace with hash 789603536, now seen corresponding path program 1 times [2023-12-16 04:50:37,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:37,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315950825] [2023-12-16 04:50:37,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:37,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:38,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:38,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315950825] [2023-12-16 04:50:38,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315950825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:38,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:38,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2023-12-16 04:50:38,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883393148] [2023-12-16 04:50:38,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:38,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-16 04:50:38,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:38,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-16 04:50:38,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2023-12-16 04:50:38,505 INFO L87 Difference]: Start difference. First operand 194 states and 223 transitions. Second operand has 45 states, 45 states have (on average 3.066666666666667) internal successors, (138), 44 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:38,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:38,786 INFO L93 Difference]: Finished difference Result 245 states and 274 transitions. [2023-12-16 04:50:38,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-16 04:50:38,786 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.066666666666667) internal successors, (138), 44 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:38,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:38,787 INFO L225 Difference]: With dead ends: 245 [2023-12-16 04:50:38,787 INFO L226 Difference]: Without dead ends: 188 [2023-12-16 04:50:38,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2023-12-16 04:50:38,788 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:38,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:50:38,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-16 04:50:38,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-12-16 04:50:38,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.1443850267379678) internal successors, (214), 187 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:38,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 214 transitions. [2023-12-16 04:50:38,792 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 214 transitions. Word has length 138 [2023-12-16 04:50:38,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:38,793 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 214 transitions. [2023-12-16 04:50:38,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.066666666666667) internal successors, (138), 44 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:38,793 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 214 transitions. [2023-12-16 04:50:38,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:38,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:38,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:38,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 04:50:38,795 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:38,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:38,795 INFO L85 PathProgramCache]: Analyzing trace with hash 2102967263, now seen corresponding path program 1 times [2023-12-16 04:50:38,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:38,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227462082] [2023-12-16 04:50:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:38,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:39,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:39,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:39,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227462082] [2023-12-16 04:50:39,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227462082] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:39,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:39,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2023-12-16 04:50:39,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706493675] [2023-12-16 04:50:39,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:39,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-16 04:50:39,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:39,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-16 04:50:39,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2023-12-16 04:50:39,886 INFO L87 Difference]: Start difference. First operand 188 states and 214 transitions. Second operand has 47 states, 47 states have (on average 2.9361702127659575) internal successors, (138), 46 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:40,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:40,162 INFO L93 Difference]: Finished difference Result 235 states and 261 transitions. [2023-12-16 04:50:40,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-16 04:50:40,163 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.9361702127659575) internal successors, (138), 46 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:40,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:40,163 INFO L225 Difference]: With dead ends: 235 [2023-12-16 04:50:40,163 INFO L226 Difference]: Without dead ends: 184 [2023-12-16 04:50:40,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2023-12-16 04:50:40,164 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:40,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:50:40,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-16 04:50:40,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2023-12-16 04:50:40,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.1366120218579234) internal successors, (208), 183 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 208 transitions. [2023-12-16 04:50:40,171 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 208 transitions. Word has length 138 [2023-12-16 04:50:40,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:40,172 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 208 transitions. [2023-12-16 04:50:40,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.9361702127659575) internal successors, (138), 46 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:40,172 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 208 transitions. [2023-12-16 04:50:40,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:40,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:40,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:40,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 04:50:40,173 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:40,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:40,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1728060153, now seen corresponding path program 1 times [2023-12-16 04:50:40,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:40,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074401497] [2023-12-16 04:50:40,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:40,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:41,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:41,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:41,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074401497] [2023-12-16 04:50:41,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074401497] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:41,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:41,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2023-12-16 04:50:41,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410215489] [2023-12-16 04:50:41,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:41,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-16 04:50:41,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:41,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-16 04:50:41,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2023-12-16 04:50:41,374 INFO L87 Difference]: Start difference. First operand 184 states and 208 transitions. Second operand has 51 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 50 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:41,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:41,648 INFO L93 Difference]: Finished difference Result 223 states and 247 transitions. [2023-12-16 04:50:41,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-16 04:50:41,648 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 50 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:41,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:41,649 INFO L225 Difference]: With dead ends: 223 [2023-12-16 04:50:41,649 INFO L226 Difference]: Without dead ends: 176 [2023-12-16 04:50:41,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2023-12-16 04:50:41,651 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:41,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:50:41,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-12-16 04:50:41,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2023-12-16 04:50:41,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.12) internal successors, (196), 175 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:41,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 196 transitions. [2023-12-16 04:50:41,654 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 196 transitions. Word has length 138 [2023-12-16 04:50:41,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:41,655 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 196 transitions. [2023-12-16 04:50:41,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 50 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:41,655 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 196 transitions. [2023-12-16 04:50:41,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:41,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:41,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:41,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 04:50:41,656 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:41,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:41,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1486711273, now seen corresponding path program 1 times [2023-12-16 04:50:41,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:41,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833639049] [2023-12-16 04:50:41,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:41,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:43,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:43,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833639049] [2023-12-16 04:50:43,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833639049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:43,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:43,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2023-12-16 04:50:43,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231439111] [2023-12-16 04:50:43,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:43,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-16 04:50:43,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-16 04:50:43,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2023-12-16 04:50:43,033 INFO L87 Difference]: Start difference. First operand 176 states and 196 transitions. Second operand has 53 states, 53 states have (on average 2.6037735849056602) internal successors, (138), 52 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:43,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:43,374 INFO L93 Difference]: Finished difference Result 211 states and 231 transitions. [2023-12-16 04:50:43,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-16 04:50:43,375 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.6037735849056602) internal successors, (138), 52 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:43,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:43,376 INFO L225 Difference]: With dead ends: 211 [2023-12-16 04:50:43,376 INFO L226 Difference]: Without dead ends: 142 [2023-12-16 04:50:43,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2023-12-16 04:50:43,378 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 80 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:43,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 4 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:50:43,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-12-16 04:50:43,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2023-12-16 04:50:43,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.014388489208633) internal successors, (141), 139 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:43,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 141 transitions. [2023-12-16 04:50:43,382 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 141 transitions. Word has length 138 [2023-12-16 04:50:43,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:43,382 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 141 transitions. [2023-12-16 04:50:43,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.6037735849056602) internal successors, (138), 52 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:43,383 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 141 transitions. [2023-12-16 04:50:43,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:50:43,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:43,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:43,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 04:50:43,384 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:43,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:43,384 INFO L85 PathProgramCache]: Analyzing trace with hash -851195132, now seen corresponding path program 1 times [2023-12-16 04:50:43,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:43,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337377798] [2023-12-16 04:50:43,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:43,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:45,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:45,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:45,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337377798] [2023-12-16 04:50:45,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337377798] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:45,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:45,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2023-12-16 04:50:45,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986375943] [2023-12-16 04:50:45,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:45,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-16 04:50:45,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:45,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-16 04:50:45,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2023-12-16 04:50:45,603 INFO L87 Difference]: Start difference. First operand 140 states and 141 transitions. Second operand has 70 states, 70 states have (on average 1.9714285714285715) internal successors, (138), 69 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:45,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:45,942 INFO L93 Difference]: Finished difference Result 181 states and 183 transitions. [2023-12-16 04:50:45,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-16 04:50:45,944 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.9714285714285715) internal successors, (138), 69 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-16 04:50:45,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:45,945 INFO L225 Difference]: With dead ends: 181 [2023-12-16 04:50:45,945 INFO L226 Difference]: Without dead ends: 142 [2023-12-16 04:50:45,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2023-12-16 04:50:45,946 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:45,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:50:45,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-12-16 04:50:45,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2023-12-16 04:50:45,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.0071428571428571) internal successors, (141), 140 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:45,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2023-12-16 04:50:45,949 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2023-12-16 04:50:45,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:45,949 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2023-12-16 04:50:45,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.9714285714285715) internal successors, (138), 69 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:45,950 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2023-12-16 04:50:45,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-16 04:50:45,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:45,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:45,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 04:50:45,951 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:45,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:45,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1962261058, now seen corresponding path program 1 times [2023-12-16 04:50:45,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:45,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094135320] [2023-12-16 04:50:45,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:45,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:48,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:48,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:48,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094135320] [2023-12-16 04:50:48,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094135320] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:48,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331287919] [2023-12-16 04:50:48,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:48,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:48,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:48,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:48,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:50:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:48,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-16 04:50:48,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:48,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:48,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:52,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:52,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331287919] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:52,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:52,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 102 [2023-12-16 04:50:52,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759535448] [2023-12-16 04:50:52,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:52,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2023-12-16 04:50:52,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:52,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2023-12-16 04:50:52,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2023-12-16 04:50:52,158 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand has 103 states, 103 states have (on average 2.7281553398058254) internal successors, (281), 102 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:52,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:52,562 INFO L93 Difference]: Finished difference Result 208 states and 239 transitions. [2023-12-16 04:50:52,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-12-16 04:50:52,563 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.7281553398058254) internal successors, (281), 102 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2023-12-16 04:50:52,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:52,564 INFO L225 Difference]: With dead ends: 208 [2023-12-16 04:50:52,564 INFO L226 Difference]: Without dead ends: 205 [2023-12-16 04:50:52,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 209 SyntacticMatches, 38 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2153 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2023-12-16 04:50:52,569 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 117 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:52,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 13 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:50:52,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-16 04:50:52,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2023-12-16 04:50:52,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.0049019607843137) internal successors, (205), 204 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:52,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2023-12-16 04:50:52,572 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 140 [2023-12-16 04:50:52,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:52,573 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2023-12-16 04:50:52,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.7281553398058254) internal successors, (281), 102 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:52,573 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2023-12-16 04:50:52,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-16 04:50:52,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:52,574 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:52,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:52,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-16 04:50:52,781 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:52,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:52,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2094150910, now seen corresponding path program 2 times [2023-12-16 04:50:52,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:52,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228182025] [2023-12-16 04:50:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:52,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:54,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:54,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228182025] [2023-12-16 04:50:54,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228182025] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:54,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161008365] [2023-12-16 04:50:54,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 04:50:54,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:54,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:54,429 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:54,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:50:54,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 04:50:54,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:54,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 108 conjunts are in the unsatisfiable core [2023-12-16 04:50:54,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:54,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:55,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161008365] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:55,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:55,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 54 [2023-12-16 04:50:55,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026115554] [2023-12-16 04:50:55,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:55,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-16 04:50:55,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:55,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-16 04:50:55,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2023-12-16 04:50:55,010 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand has 55 states, 55 states have (on average 3.7454545454545456) internal successors, (206), 54 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:56,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:56,051 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2023-12-16 04:50:56,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-16 04:50:56,051 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.7454545454545456) internal successors, (206), 54 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2023-12-16 04:50:56,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:56,052 INFO L225 Difference]: With dead ends: 211 [2023-12-16 04:50:56,052 INFO L226 Difference]: Without dead ends: 208 [2023-12-16 04:50:56,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=113, Invalid=2967, Unknown=0, NotChecked=0, Total=3080 [2023-12-16 04:50:56,053 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 2 mSDsluCounter, 7804 mSDsCounter, 0 mSdLazyCounter, 2759 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7957 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:56,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7957 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2759 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 04:50:56,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-12-16 04:50:56,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2023-12-16 04:50:56,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.0048543689320388) internal successors, (207), 206 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:56,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2023-12-16 04:50:56,057 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2023-12-16 04:50:56,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:56,057 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2023-12-16 04:50:56,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.7454545454545456) internal successors, (206), 54 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:56,058 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2023-12-16 04:50:56,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-16 04:50:56,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:56,059 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:56,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:56,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-16 04:50:56,268 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:56,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:56,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1868162760, now seen corresponding path program 3 times [2023-12-16 04:50:56,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:56,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430346761] [2023-12-16 04:50:56,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:56,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 1156 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:58,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:58,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430346761] [2023-12-16 04:50:58,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430346761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:58,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:58,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2023-12-16 04:50:58,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451314258] [2023-12-16 04:50:58,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:58,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-16 04:50:58,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:58,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-16 04:50:58,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2023-12-16 04:50:58,027 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand has 52 states, 52 states have (on average 3.9615384615384617) internal successors, (206), 52 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:58,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:58,383 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2023-12-16 04:50:58,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-16 04:50:58,383 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.9615384615384617) internal successors, (206), 52 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2023-12-16 04:50:58,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:58,384 INFO L225 Difference]: With dead ends: 207 [2023-12-16 04:50:58,384 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 04:50:58,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2023-12-16 04:50:58,388 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:58,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:50:58,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 04:50:58,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 04:50:58,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:58,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 04:50:58,389 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 206 [2023-12-16 04:50:58,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:58,389 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 04:50:58,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.9615384615384617) internal successors, (206), 52 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:58,395 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 04:50:58,395 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 04:50:58,397 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:50:58,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-16 04:50:58,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 04:50:58,404 INFO L899 garLoopResultBuilder]: For program point L367(lines 367 556) no Hoare annotation was computed. [2023-12-16 04:50:58,404 INFO L899 garLoopResultBuilder]: For program point L301(lines 301 688) no Hoare annotation was computed. [2023-12-16 04:50:58,404 INFO L899 garLoopResultBuilder]: For program point L235(lines 235 820) no Hoare annotation was computed. [2023-12-16 04:50:58,404 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 952) no Hoare annotation was computed. [2023-12-16 04:50:58,404 INFO L899 garLoopResultBuilder]: For program point L103(lines 103 1084) no Hoare annotation was computed. [2023-12-16 04:50:58,404 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 1216) no Hoare annotation was computed. [2023-12-16 04:50:58,404 INFO L899 garLoopResultBuilder]: For program point $Ultimate##202(lines 317 657) no Hoare annotation was computed. [2023-12-16 04:50:58,404 INFO L899 garLoopResultBuilder]: For program point L403(lines 403 484) no Hoare annotation was computed. [2023-12-16 04:50:58,404 INFO L899 garLoopResultBuilder]: For program point L337(lines 337 616) no Hoare annotation was computed. [2023-12-16 04:50:58,404 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 748) no Hoare annotation was computed. [2023-12-16 04:50:58,405 INFO L899 garLoopResultBuilder]: For program point L205(lines 205 880) no Hoare annotation was computed. [2023-12-16 04:50:58,405 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 1012) no Hoare annotation was computed. [2023-12-16 04:50:58,405 INFO L899 garLoopResultBuilder]: For program point L73(lines 73 1144) no Hoare annotation was computed. [2023-12-16 04:50:58,405 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 544) no Hoare annotation was computed. [2023-12-16 04:50:58,405 INFO L899 garLoopResultBuilder]: For program point L307(lines 307 676) no Hoare annotation was computed. [2023-12-16 04:50:58,405 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 808) no Hoare annotation was computed. [2023-12-16 04:50:58,405 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 940) no Hoare annotation was computed. [2023-12-16 04:50:58,405 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 1072) no Hoare annotation was computed. [2023-12-16 04:50:58,405 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 1204) no Hoare annotation was computed. [2023-12-16 04:50:58,405 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 13 1258) no Hoare annotation was computed. [2023-12-16 04:50:58,405 INFO L899 garLoopResultBuilder]: For program point L442(lines 442 451) no Hoare annotation was computed. [2023-12-16 04:50:58,405 INFO L899 garLoopResultBuilder]: For program point L409(lines 409 472) no Hoare annotation was computed. [2023-12-16 04:50:58,405 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 604) no Hoare annotation was computed. [2023-12-16 04:50:58,406 INFO L899 garLoopResultBuilder]: For program point L277(lines 277 736) no Hoare annotation was computed. [2023-12-16 04:50:58,406 INFO L899 garLoopResultBuilder]: For program point L211(lines 211 868) no Hoare annotation was computed. [2023-12-16 04:50:58,406 INFO L899 garLoopResultBuilder]: For program point L145(lines 145 1000) no Hoare annotation was computed. [2023-12-16 04:50:58,406 INFO L899 garLoopResultBuilder]: For program point L79(lines 79 1132) no Hoare annotation was computed. [2023-12-16 04:50:58,406 INFO L899 garLoopResultBuilder]: For program point L444(line 444) no Hoare annotation was computed. [2023-12-16 04:50:58,406 INFO L899 garLoopResultBuilder]: For program point L379(lines 379 532) no Hoare annotation was computed. [2023-12-16 04:50:58,406 INFO L899 garLoopResultBuilder]: For program point L313(lines 313 664) no Hoare annotation was computed. [2023-12-16 04:50:58,406 INFO L899 garLoopResultBuilder]: For program point L247(lines 247 796) no Hoare annotation was computed. [2023-12-16 04:50:58,406 INFO L899 garLoopResultBuilder]: For program point L181(lines 181 928) no Hoare annotation was computed. [2023-12-16 04:50:58,406 INFO L899 garLoopResultBuilder]: For program point L115(lines 115 1060) no Hoare annotation was computed. [2023-12-16 04:50:58,406 INFO L899 garLoopResultBuilder]: For program point L49(lines 49 1192) no Hoare annotation was computed. [2023-12-16 04:50:58,406 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 1257) no Hoare annotation was computed. [2023-12-16 04:50:58,406 INFO L899 garLoopResultBuilder]: For program point L415(lines 415 460) no Hoare annotation was computed. [2023-12-16 04:50:58,406 INFO L899 garLoopResultBuilder]: For program point L349(lines 349 592) no Hoare annotation was computed. [2023-12-16 04:50:58,407 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 724) no Hoare annotation was computed. [2023-12-16 04:50:58,407 INFO L899 garLoopResultBuilder]: For program point L217(lines 217 856) no Hoare annotation was computed. [2023-12-16 04:50:58,407 INFO L899 garLoopResultBuilder]: For program point L151(lines 151 988) no Hoare annotation was computed. [2023-12-16 04:50:58,407 INFO L899 garLoopResultBuilder]: For program point L85(lines 85 1120) no Hoare annotation was computed. [2023-12-16 04:50:58,407 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 1252) no Hoare annotation was computed. [2023-12-16 04:50:58,407 INFO L899 garLoopResultBuilder]: For program point $Ultimate##90(lines 149 993) no Hoare annotation was computed. [2023-12-16 04:50:58,407 INFO L899 garLoopResultBuilder]: For program point $Ultimate##94(lines 155 981) no Hoare annotation was computed. [2023-12-16 04:50:58,407 INFO L899 garLoopResultBuilder]: For program point $Ultimate##98(lines 161 969) no Hoare annotation was computed. [2023-12-16 04:50:58,407 INFO L899 garLoopResultBuilder]: For program point L385(lines 385 520) no Hoare annotation was computed. [2023-12-16 04:50:58,407 INFO L899 garLoopResultBuilder]: For program point L319(lines 319 652) no Hoare annotation was computed. [2023-12-16 04:50:58,407 INFO L899 garLoopResultBuilder]: For program point L253(lines 253 784) no Hoare annotation was computed. [2023-12-16 04:50:58,407 INFO L899 garLoopResultBuilder]: For program point $Ultimate##82(lines 137 1017) no Hoare annotation was computed. [2023-12-16 04:50:58,407 INFO L899 garLoopResultBuilder]: For program point L187(lines 187 916) no Hoare annotation was computed. [2023-12-16 04:50:58,409 INFO L899 garLoopResultBuilder]: For program point L121(lines 121 1048) no Hoare annotation was computed. [2023-12-16 04:50:58,409 INFO L899 garLoopResultBuilder]: For program point L55(lines 55 1180) no Hoare annotation was computed. [2023-12-16 04:50:58,409 INFO L899 garLoopResultBuilder]: For program point $Ultimate##86(lines 143 1005) no Hoare annotation was computed. [2023-12-16 04:50:58,410 INFO L899 garLoopResultBuilder]: For program point $Ultimate##70(lines 119 1053) no Hoare annotation was computed. [2023-12-16 04:50:58,410 INFO L899 garLoopResultBuilder]: For program point $Ultimate##170(lines 269 753) no Hoare annotation was computed. [2023-12-16 04:50:58,410 INFO L899 garLoopResultBuilder]: For program point $Ultimate##74(lines 125 1041) no Hoare annotation was computed. [2023-12-16 04:50:58,410 INFO L899 garLoopResultBuilder]: For program point $Ultimate##174(lines 275 741) no Hoare annotation was computed. [2023-12-16 04:50:58,410 INFO L899 garLoopResultBuilder]: For program point $Ultimate##78(lines 131 1029) no Hoare annotation was computed. [2023-12-16 04:50:58,410 INFO L899 garLoopResultBuilder]: For program point $Ultimate##178(lines 281 729) no Hoare annotation was computed. [2023-12-16 04:50:58,410 INFO L899 garLoopResultBuilder]: For program point $Ultimate##182(lines 287 717) no Hoare annotation was computed. [2023-12-16 04:50:58,410 INFO L899 garLoopResultBuilder]: For program point $Ultimate##186(lines 293 705) no Hoare annotation was computed. [2023-12-16 04:50:58,410 INFO L899 garLoopResultBuilder]: For program point $Ultimate##62(lines 107 1077) no Hoare annotation was computed. [2023-12-16 04:50:58,410 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 580) no Hoare annotation was computed. [2023-12-16 04:50:58,411 INFO L899 garLoopResultBuilder]: For program point $Ultimate##66(lines 113 1065) no Hoare annotation was computed. [2023-12-16 04:50:58,411 INFO L899 garLoopResultBuilder]: For program point L289(lines 289 712) no Hoare annotation was computed. [2023-12-16 04:50:58,411 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-16 04:50:58,411 INFO L899 garLoopResultBuilder]: For program point L223(lines 223 844) no Hoare annotation was computed. [2023-12-16 04:50:58,411 INFO L899 garLoopResultBuilder]: For program point $Ultimate##50(lines 89 1113) no Hoare annotation was computed. [2023-12-16 04:50:58,411 INFO L899 garLoopResultBuilder]: For program point L157(lines 157 976) no Hoare annotation was computed. [2023-12-16 04:50:58,411 INFO L899 garLoopResultBuilder]: For program point L91(lines 91 1108) no Hoare annotation was computed. [2023-12-16 04:50:58,411 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 1240) no Hoare annotation was computed. [2023-12-16 04:50:58,411 INFO L899 garLoopResultBuilder]: For program point $Ultimate##190(lines 299 693) no Hoare annotation was computed. [2023-12-16 04:50:58,411 INFO L899 garLoopResultBuilder]: For program point $Ultimate##194(lines 305 681) no Hoare annotation was computed. [2023-12-16 04:50:58,411 INFO L899 garLoopResultBuilder]: For program point $Ultimate##54(lines 95 1101) no Hoare annotation was computed. [2023-12-16 04:50:58,411 INFO L899 garLoopResultBuilder]: For program point $Ultimate##198(lines 311 669) no Hoare annotation was computed. [2023-12-16 04:50:58,411 INFO L899 garLoopResultBuilder]: For program point L422(lines 422 433) no Hoare annotation was computed. [2023-12-16 04:50:58,412 INFO L899 garLoopResultBuilder]: For program point $Ultimate##58(lines 101 1089) no Hoare annotation was computed. [2023-12-16 04:50:58,412 INFO L899 garLoopResultBuilder]: For program point $Ultimate##42(lines 77 1137) no Hoare annotation was computed. [2023-12-16 04:50:58,412 INFO L899 garLoopResultBuilder]: For program point $Ultimate##46(lines 83 1125) no Hoare annotation was computed. [2023-12-16 04:50:58,412 INFO L899 garLoopResultBuilder]: For program point $Ultimate##38(lines 71 1149) no Hoare annotation was computed. [2023-12-16 04:50:58,412 INFO L899 garLoopResultBuilder]: For program point $Ultimate##250(lines 389 513) no Hoare annotation was computed. [2023-12-16 04:50:58,412 INFO L899 garLoopResultBuilder]: For program point $Ultimate##254(lines 395 501) no Hoare annotation was computed. [2023-12-16 04:50:58,412 INFO L899 garLoopResultBuilder]: For program point $Ultimate##30(lines 59 1173) no Hoare annotation was computed. [2023-12-16 04:50:58,412 INFO L899 garLoopResultBuilder]: For program point L391(lines 391 508) no Hoare annotation was computed. [2023-12-16 04:50:58,412 INFO L899 garLoopResultBuilder]: For program point $Ultimate##130(lines 209 873) no Hoare annotation was computed. [2023-12-16 04:50:58,412 INFO L899 garLoopResultBuilder]: For program point L325(lines 325 640) no Hoare annotation was computed. [2023-12-16 04:50:58,412 INFO L899 garLoopResultBuilder]: For program point $Ultimate##258(lines 401 489) no Hoare annotation was computed. [2023-12-16 04:50:58,412 INFO L899 garLoopResultBuilder]: For program point $Ultimate##34(lines 65 1161) no Hoare annotation was computed. [2023-12-16 04:50:58,412 INFO L899 garLoopResultBuilder]: For program point L259(lines 259 772) no Hoare annotation was computed. [2023-12-16 04:50:58,412 INFO L899 garLoopResultBuilder]: For program point $Ultimate##134(lines 215 861) no Hoare annotation was computed. [2023-12-16 04:50:58,413 INFO L899 garLoopResultBuilder]: For program point L193(lines 193 904) no Hoare annotation was computed. [2023-12-16 04:50:58,413 INFO L899 garLoopResultBuilder]: For program point $Ultimate##6(lines 23 1245) no Hoare annotation was computed. [2023-12-16 04:50:58,413 INFO L899 garLoopResultBuilder]: For program point L127(lines 127 1036) no Hoare annotation was computed. [2023-12-16 04:50:58,413 INFO L899 garLoopResultBuilder]: For program point $Ultimate##138(lines 221 849) no Hoare annotation was computed. [2023-12-16 04:50:58,413 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 1168) no Hoare annotation was computed. [2023-12-16 04:50:58,413 INFO L899 garLoopResultBuilder]: For program point $Ultimate##26(lines 53 1185) no Hoare annotation was computed. [2023-12-16 04:50:58,413 INFO L899 garLoopResultBuilder]: For program point $Ultimate##142(lines 227 837) no Hoare annotation was computed. [2023-12-16 04:50:58,413 INFO L899 garLoopResultBuilder]: For program point $Ultimate##262(lines 407 477) no Hoare annotation was computed. [2023-12-16 04:50:58,413 INFO L899 garLoopResultBuilder]: For program point $Ultimate##146(lines 233 825) no Hoare annotation was computed. [2023-12-16 04:50:58,413 INFO L899 garLoopResultBuilder]: For program point $Ultimate##22(lines 47 1197) no Hoare annotation was computed. [2023-12-16 04:50:58,413 INFO L899 garLoopResultBuilder]: For program point $Ultimate##266(lines 413 465) no Hoare annotation was computed. [2023-12-16 04:50:58,413 INFO L899 garLoopResultBuilder]: For program point $Ultimate##18(lines 41 1209) no Hoare annotation was computed. [2023-12-16 04:50:58,413 INFO L899 garLoopResultBuilder]: For program point $Ultimate##150(lines 239 813) no Hoare annotation was computed. [2023-12-16 04:50:58,413 INFO L899 garLoopResultBuilder]: For program point $Ultimate##270(lines 420 453) no Hoare annotation was computed. [2023-12-16 04:50:58,413 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-16 04:50:58,414 INFO L899 garLoopResultBuilder]: For program point $Ultimate##10(lines 29 1233) no Hoare annotation was computed. [2023-12-16 04:50:58,414 INFO L899 garLoopResultBuilder]: For program point $Ultimate##154(lines 245 801) no Hoare annotation was computed. [2023-12-16 04:50:58,414 INFO L899 garLoopResultBuilder]: For program point $Ultimate##14(lines 35 1221) no Hoare annotation was computed. [2023-12-16 04:50:58,414 INFO L899 garLoopResultBuilder]: For program point $Ultimate##158(lines 251 789) no Hoare annotation was computed. [2023-12-16 04:50:58,414 INFO L899 garLoopResultBuilder]: For program point $Ultimate##162(lines 257 777) no Hoare annotation was computed. [2023-12-16 04:50:58,414 INFO L899 garLoopResultBuilder]: For program point $Ultimate##166(lines 263 765) no Hoare annotation was computed. [2023-12-16 04:50:58,414 INFO L899 garLoopResultBuilder]: For program point L361(lines 361 568) no Hoare annotation was computed. [2023-12-16 04:50:58,414 INFO L899 garLoopResultBuilder]: For program point L295(lines 295 700) no Hoare annotation was computed. [2023-12-16 04:50:58,414 INFO L899 garLoopResultBuilder]: For program point L229(lines 229 832) no Hoare annotation was computed. [2023-12-16 04:50:58,414 INFO L899 garLoopResultBuilder]: For program point L163(lines 163 964) no Hoare annotation was computed. [2023-12-16 04:50:58,414 INFO L899 garLoopResultBuilder]: For program point L97(lines 97 1096) no Hoare annotation was computed. [2023-12-16 04:50:58,414 INFO L899 garLoopResultBuilder]: For program point $Ultimate##206(lines 323 645) no Hoare annotation was computed. [2023-12-16 04:50:58,414 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 1228) no Hoare annotation was computed. [2023-12-16 04:50:58,414 INFO L899 garLoopResultBuilder]: For program point $Ultimate##210(lines 329 633) no Hoare annotation was computed. [2023-12-16 04:50:58,415 INFO L899 garLoopResultBuilder]: For program point $Ultimate##214(lines 335 621) no Hoare annotation was computed. [2023-12-16 04:50:58,415 INFO L899 garLoopResultBuilder]: For program point $Ultimate##218(lines 341 609) no Hoare annotation was computed. [2023-12-16 04:50:58,415 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 444) no Hoare annotation was computed. [2023-12-16 04:50:58,415 INFO L899 garLoopResultBuilder]: For program point $Ultimate##102(lines 167 957) no Hoare annotation was computed. [2023-12-16 04:50:58,415 INFO L899 garLoopResultBuilder]: For program point $Ultimate##222(lines 347 597) no Hoare annotation was computed. [2023-12-16 04:50:58,415 INFO L899 garLoopResultBuilder]: For program point $Ultimate##106(lines 173 945) no Hoare annotation was computed. [2023-12-16 04:50:58,415 INFO L899 garLoopResultBuilder]: For program point $Ultimate##226(lines 353 585) no Hoare annotation was computed. [2023-12-16 04:50:58,415 INFO L899 garLoopResultBuilder]: For program point L397(lines 397 496) no Hoare annotation was computed. [2023-12-16 04:50:58,415 INFO L899 garLoopResultBuilder]: For program point L331(lines 331 628) no Hoare annotation was computed. [2023-12-16 04:50:58,415 INFO L899 garLoopResultBuilder]: For program point L265(lines 265 760) no Hoare annotation was computed. [2023-12-16 04:50:58,415 INFO L899 garLoopResultBuilder]: For program point $Ultimate##110(lines 179 933) no Hoare annotation was computed. [2023-12-16 04:50:58,415 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 892) no Hoare annotation was computed. [2023-12-16 04:50:58,415 INFO L899 garLoopResultBuilder]: For program point $Ultimate##230(lines 359 573) no Hoare annotation was computed. [2023-12-16 04:50:58,416 INFO L899 garLoopResultBuilder]: For program point L133(lines 133 1024) no Hoare annotation was computed. [2023-12-16 04:50:58,416 INFO L899 garLoopResultBuilder]: For program point $Ultimate##114(lines 185 921) no Hoare annotation was computed. [2023-12-16 04:50:58,416 INFO L899 garLoopResultBuilder]: For program point L67(lines 67 1156) no Hoare annotation was computed. [2023-12-16 04:50:58,416 INFO L899 garLoopResultBuilder]: For program point $Ultimate##234(lines 365 561) no Hoare annotation was computed. [2023-12-16 04:50:58,416 INFO L899 garLoopResultBuilder]: For program point $Ultimate##118(lines 191 909) no Hoare annotation was computed. [2023-12-16 04:50:58,416 INFO L899 garLoopResultBuilder]: For program point $Ultimate##238(lines 371 549) no Hoare annotation was computed. [2023-12-16 04:50:58,416 INFO L899 garLoopResultBuilder]: For program point $Ultimate##122(lines 197 897) no Hoare annotation was computed. [2023-12-16 04:50:58,416 INFO L899 garLoopResultBuilder]: For program point $Ultimate##242(lines 377 537) no Hoare annotation was computed. [2023-12-16 04:50:58,416 INFO L899 garLoopResultBuilder]: For program point $Ultimate##126(lines 203 885) no Hoare annotation was computed. [2023-12-16 04:50:58,416 INFO L899 garLoopResultBuilder]: For program point $Ultimate##246(lines 383 525) no Hoare annotation was computed. [2023-12-16 04:50:58,419 INFO L445 BasicCegarLoop]: Path program histogram: [3, 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 04:50:58,422 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:50:58,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:50:58 BoogieIcfgContainer [2023-12-16 04:50:58,426 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:50:58,427 INFO L158 Benchmark]: Toolchain (without parser) took 36540.87ms. Allocated memory was 188.7MB in the beginning and 497.0MB in the end (delta: 308.3MB). Free memory was 129.6MB in the beginning and 416.9MB in the end (delta: -287.3MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-16 04:50:58,427 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:50:58,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.30ms. Allocated memory is still 188.7MB. Free memory was 129.6MB in the beginning and 108.2MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-16 04:50:58,428 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.95ms. Allocated memory is still 188.7MB. Free memory was 108.2MB in the beginning and 105.5MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 04:50:58,428 INFO L158 Benchmark]: Boogie Preprocessor took 47.70ms. Allocated memory is still 188.7MB. Free memory was 105.1MB in the beginning and 101.8MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 04:50:58,428 INFO L158 Benchmark]: RCFGBuilder took 753.97ms. Allocated memory was 188.7MB in the beginning and 287.3MB in the end (delta: 98.6MB). Free memory was 101.8MB in the beginning and 243.6MB in the end (delta: -141.9MB). Peak memory consumption was 38.5MB. Max. memory is 8.0GB. [2023-12-16 04:50:58,434 INFO L158 Benchmark]: TraceAbstraction took 35277.37ms. Allocated memory was 287.3MB in the beginning and 497.0MB in the end (delta: 209.7MB). Free memory was 243.1MB in the beginning and 416.9MB in the end (delta: -173.8MB). Peak memory consumption was 35.9MB. Max. memory is 8.0GB. [2023-12-16 04:50:58,435 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 188.7MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 393.30ms. Allocated memory is still 188.7MB. Free memory was 129.6MB in the beginning and 108.2MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.95ms. Allocated memory is still 188.7MB. Free memory was 108.2MB in the beginning and 105.5MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.70ms. Allocated memory is still 188.7MB. Free memory was 105.1MB in the beginning and 101.8MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 753.97ms. Allocated memory was 188.7MB in the beginning and 287.3MB in the end (delta: 98.6MB). Free memory was 101.8MB in the beginning and 243.6MB in the end (delta: -141.9MB). Peak memory consumption was 38.5MB. Max. memory is 8.0GB. * TraceAbstraction took 35277.37ms. Allocated memory was 287.3MB in the beginning and 497.0MB in the end (delta: 209.7MB). Free memory was 243.1MB in the beginning and 416.9MB in the end (delta: -173.8MB). Peak memory consumption was 35.9MB. 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 - PositiveResult [Line: 444]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 142 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 35.2s, OverallIterations: 25, TraceHistogramMax: 34, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 268 SdHoareTripleChecker+Valid, 8.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 268 mSDsluCounter, 10900 SdHoareTripleChecker+Invalid, 6.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7949 mSDsCounter, 417 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17691 IncrementalHoareTripleChecker+Invalid, 18108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 417 mSolverCounterUnsat, 2951 mSDtfsCounter, 17691 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1466 GetRequests, 640 SyntacticMatches, 38 SemanticMatches, 788 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2153 ImplicationChecksByTransitivity, 15.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=272occurred in iteration=2, InterpolantAutomatonStates: 835, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 25 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FormulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FormulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 24.3s InterpolantComputationTime, 3930 NumberOfCodeBlocks, 3930 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 4245 ConstructedInterpolants, 0 QuantifiedInterpolants, 8809 SizeOfPredicates, 2 NumberOfNonLiveVariables, 882 ConjunctsInSsa, 178 ConjunctsInUnsatCore, 29 InterpolantComputations, 23 PerfectInterpolantSequences, 1156/4426 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-16 04:50:58,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...