/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/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 05:59:55,573 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 05:59:55,652 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 05:59:55,655 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 05:59:55,656 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 05:59:55,679 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 05:59:55,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 05:59:55,680 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 05:59:55,681 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 05:59:55,684 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 05:59:55,684 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 05:59:55,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 05:59:55,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 05:59:55,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 05:59:55,686 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 05:59:55,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 05:59:55,687 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 05:59:55,687 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 05:59:55,687 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 05:59:55,687 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 05:59:55,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 05:59:55,688 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 05:59:55,688 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 05:59:55,688 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 05:59:55,688 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 05:59:55,689 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 05:59:55,689 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 05:59:55,689 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 05:59:55,689 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 05:59:55,689 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 05:59:55,690 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 05:59:55,690 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 05:59:55,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 05:59:55,691 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 05:59:55,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 05:59:55,691 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 05:59:55,691 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 05:59:55,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 05:59:55,691 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 05:59:55,691 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 05:59:55,692 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 05:59:55,692 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 05:59:55,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 05:59:55,692 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 05:59:55,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 05:59:55,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 05:59:55,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 05:59:55,909 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 05:59:55,909 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 05:59:55,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2023-12-16 05:59:57,048 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 05:59:57,228 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 05:59:57,228 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2023-12-16 05:59:57,235 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/962e98fd5/17a8cfe7a49d4b899f47bd0938ed47e9/FLAG1e2163b88 [2023-12-16 05:59:57,247 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/962e98fd5/17a8cfe7a49d4b899f47bd0938ed47e9 [2023-12-16 05:59:57,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 05:59:57,250 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 05:59:57,250 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 05:59:57,250 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 05:59:57,256 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 05:59:57,256 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:59:57" (1/1) ... [2023-12-16 05:59:57,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16547be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:57, skipping insertion in model container [2023-12-16 05:59:57,257 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:59:57" (1/1) ... [2023-12-16 05:59:57,297 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 05:59:57,471 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c[12042,12055] [2023-12-16 05:59:57,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 05:59:57,481 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 05:59:57,518 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c[12042,12055] [2023-12-16 05:59:57,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 05:59:57,530 INFO L206 MainTranslator]: Completed translation [2023-12-16 05:59:57,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:57 WrapperNode [2023-12-16 05:59:57,530 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 05:59:57,531 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 05:59:57,531 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 05:59:57,531 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 05:59:57,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:57" (1/1) ... [2023-12-16 05:59:57,546 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:57" (1/1) ... [2023-12-16 05:59:57,597 INFO L138 Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 414 [2023-12-16 05:59:57,597 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 05:59:57,598 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 05:59:57,598 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 05:59:57,598 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 05:59:57,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:57" (1/1) ... [2023-12-16 05:59:57,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:57" (1/1) ... [2023-12-16 05:59:57,619 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:57" (1/1) ... [2023-12-16 05:59:57,640 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 05:59:57,640 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:57" (1/1) ... [2023-12-16 05:59:57,641 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:57" (1/1) ... [2023-12-16 05:59:57,646 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:57" (1/1) ... [2023-12-16 05:59:57,650 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:57" (1/1) ... [2023-12-16 05:59:57,651 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:57" (1/1) ... [2023-12-16 05:59:57,653 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:57" (1/1) ... [2023-12-16 05:59:57,662 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 05:59:57,662 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 05:59:57,663 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 05:59:57,663 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 05:59:57,663 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:57" (1/1) ... [2023-12-16 05:59:57,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 05:59:57,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:59:57,705 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 05:59:57,729 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 05:59:57,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 05:59:57,748 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2023-12-16 05:59:57,749 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2023-12-16 05:59:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-12-16 05:59:57,749 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-12-16 05:59:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2023-12-16 05:59:57,751 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2023-12-16 05:59:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2023-12-16 05:59:57,751 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2023-12-16 05:59:57,752 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2023-12-16 05:59:57,752 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2023-12-16 05:59:57,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 05:59:57,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 05:59:57,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 05:59:57,827 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 05:59:57,829 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 05:59:58,183 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 05:59:58,208 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 05:59:58,208 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 05:59:58,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:59:58 BoogieIcfgContainer [2023-12-16 05:59:58,209 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 05:59:58,210 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 05:59:58,210 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 05:59:58,213 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 05:59:58,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:59:57" (1/3) ... [2023-12-16 05:59:58,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2999f161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:59:58, skipping insertion in model container [2023-12-16 05:59:58,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:57" (2/3) ... [2023-12-16 05:59:58,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2999f161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:59:58, skipping insertion in model container [2023-12-16 05:59:58,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:59:58" (3/3) ... [2023-12-16 05:59:58,215 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2023-12-16 05:59:58,227 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 05:59:58,228 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 05:59:58,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 05:59:58,268 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;@18cc0780, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 05:59:58,269 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 05:59:58,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 133 states have (on average 1.6240601503759398) internal successors, (216), 137 states have internal predecessors, (216), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 05:59:58,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 05:59:58,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:59:58,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:59:58,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:59:58,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:59:58,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1464316671, now seen corresponding path program 1 times [2023-12-16 05:59:58,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:59:58,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464843363] [2023-12-16 05:59:58,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:59:58,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:59:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:59:58,515 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 05:59:58,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:59:58,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464843363] [2023-12-16 05:59:58,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464843363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:59:58,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:59:58,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 05:59:58,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609227016] [2023-12-16 05:59:58,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:59:58,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 05:59:58,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:59:58,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 05:59:58,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 05:59:58,552 INFO L87 Difference]: Start difference. First operand has 172 states, 133 states have (on average 1.6240601503759398) internal successors, (216), 137 states have internal predecessors, (216), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 05:59:58,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:59:58,671 INFO L93 Difference]: Finished difference Result 350 states and 604 transitions. [2023-12-16 05:59:58,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 05:59:58,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-16 05:59:58,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:59:58,681 INFO L225 Difference]: With dead ends: 350 [2023-12-16 05:59:58,681 INFO L226 Difference]: Without dead ends: 178 [2023-12-16 05:59:58,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 05:59:58,687 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 18 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:59:58,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 775 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:59:58,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-16 05:59:58,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2023-12-16 05:59:58,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 137 states have (on average 1.5547445255474452) internal successors, (213), 140 states have internal predecessors, (213), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 05:59:58,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 277 transitions. [2023-12-16 05:59:58,731 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 277 transitions. Word has length 14 [2023-12-16 05:59:58,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:59:58,731 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 277 transitions. [2023-12-16 05:59:58,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 05:59:58,731 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 277 transitions. [2023-12-16 05:59:58,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-16 05:59:58,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:59:58,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:59:58,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 05:59:58,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:59:58,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:59:58,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1895232951, now seen corresponding path program 1 times [2023-12-16 05:59:58,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:59:58,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934469767] [2023-12-16 05:59:58,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:59:58,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:59:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:59:58,787 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 05:59:58,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:59:58,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934469767] [2023-12-16 05:59:58,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934469767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:59:58,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:59:58,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 05:59:58,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124793701] [2023-12-16 05:59:58,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:59:58,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 05:59:58,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:59:58,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 05:59:58,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 05:59:58,790 INFO L87 Difference]: Start difference. First operand 176 states and 277 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 05:59:58,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:59:58,856 INFO L93 Difference]: Finished difference Result 366 states and 578 transitions. [2023-12-16 05:59:58,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 05:59:58,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-16 05:59:58,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:59:58,859 INFO L225 Difference]: With dead ends: 366 [2023-12-16 05:59:58,859 INFO L226 Difference]: Without dead ends: 192 [2023-12-16 05:59:58,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 05:59:58,862 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 25 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:59:58,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 792 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:59:58,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-16 05:59:58,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2023-12-16 05:59:58,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.5337837837837838) internal successors, (227), 151 states have internal predecessors, (227), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-16 05:59:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 293 transitions. [2023-12-16 05:59:58,876 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 293 transitions. Word has length 15 [2023-12-16 05:59:58,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:59:58,876 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 293 transitions. [2023-12-16 05:59:58,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 05:59:58,876 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 293 transitions. [2023-12-16 05:59:58,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-16 05:59:58,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:59:58,877 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] [2023-12-16 05:59:58,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 05:59:58,878 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:59:58,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:59:58,878 INFO L85 PathProgramCache]: Analyzing trace with hash -602557550, now seen corresponding path program 1 times [2023-12-16 05:59:58,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:59:58,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257529420] [2023-12-16 05:59:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:59:58,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:59:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:59:58,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:59:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:59:58,940 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 05:59:58,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:59:58,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257529420] [2023-12-16 05:59:58,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257529420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:59:58,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:59:58,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 05:59:58,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461361449] [2023-12-16 05:59:58,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:59:58,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 05:59:58,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:59:58,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 05:59:58,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 05:59:58,943 INFO L87 Difference]: Start difference. First operand 189 states and 293 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 05:59:58,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:59:58,985 INFO L93 Difference]: Finished difference Result 398 states and 624 transitions. [2023-12-16 05:59:58,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 05:59:58,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-12-16 05:59:58,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:59:58,987 INFO L225 Difference]: With dead ends: 398 [2023-12-16 05:59:58,987 INFO L226 Difference]: Without dead ends: 218 [2023-12-16 05:59:58,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 05:59:58,988 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 22 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:59:58,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 532 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:59:58,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-12-16 05:59:58,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 191. [2023-12-16 05:59:58,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 150 states have (on average 1.5266666666666666) internal successors, (229), 153 states have internal predecessors, (229), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-16 05:59:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 295 transitions. [2023-12-16 05:59:59,000 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 295 transitions. Word has length 22 [2023-12-16 05:59:59,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:59:59,000 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 295 transitions. [2023-12-16 05:59:59,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 05:59:59,001 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 295 transitions. [2023-12-16 05:59:59,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-16 05:59:59,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:59:59,002 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] [2023-12-16 05:59:59,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 05:59:59,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:59:59,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:59:59,003 INFO L85 PathProgramCache]: Analyzing trace with hash -73006397, now seen corresponding path program 1 times [2023-12-16 05:59:59,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:59:59,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294877172] [2023-12-16 05:59:59,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:59:59,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:59:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:59:59,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:59:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:59:59,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 05:59:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:59:59,051 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 05:59:59,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:59:59,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294877172] [2023-12-16 05:59:59,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294877172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:59:59,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:59:59,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 05:59:59,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109064223] [2023-12-16 05:59:59,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:59:59,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 05:59:59,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:59:59,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 05:59:59,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 05:59:59,053 INFO L87 Difference]: Start difference. First operand 191 states and 295 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 05:59:59,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:59:59,114 INFO L93 Difference]: Finished difference Result 429 states and 680 transitions. [2023-12-16 05:59:59,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 05:59:59,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-12-16 05:59:59,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:59:59,117 INFO L225 Difference]: With dead ends: 429 [2023-12-16 05:59:59,117 INFO L226 Difference]: Without dead ends: 288 [2023-12-16 05:59:59,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 05:59:59,126 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 121 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:59:59,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 788 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:59:59,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-12-16 05:59:59,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 191. [2023-12-16 05:59:59,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 150 states have (on average 1.5) internal successors, (225), 153 states have internal predecessors, (225), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-16 05:59:59,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 291 transitions. [2023-12-16 05:59:59,139 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 291 transitions. Word has length 30 [2023-12-16 05:59:59,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:59:59,139 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 291 transitions. [2023-12-16 05:59:59,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 05:59:59,139 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 291 transitions. [2023-12-16 05:59:59,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 05:59:59,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:59:59,146 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:59:59,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 05:59:59,146 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:59:59,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:59:59,147 INFO L85 PathProgramCache]: Analyzing trace with hash -363228684, now seen corresponding path program 1 times [2023-12-16 05:59:59,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:59:59,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886198566] [2023-12-16 05:59:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:59:59,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:59:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:59:59,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:59:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:59:59,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 05:59:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:59:59,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 05:59:59,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:59:59,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886198566] [2023-12-16 05:59:59,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886198566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:59:59,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:59:59,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 05:59:59,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575399571] [2023-12-16 05:59:59,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:59:59,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 05:59:59,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:59:59,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 05:59:59,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 05:59:59,262 INFO L87 Difference]: Start difference. First operand 191 states and 291 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 05:59:59,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:59:59,297 INFO L93 Difference]: Finished difference Result 373 states and 572 transitions. [2023-12-16 05:59:59,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 05:59:59,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2023-12-16 05:59:59,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:59:59,301 INFO L225 Difference]: With dead ends: 373 [2023-12-16 05:59:59,301 INFO L226 Difference]: Without dead ends: 193 [2023-12-16 05:59:59,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 05:59:59,304 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 0 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:59:59,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1048 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:59:59,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-12-16 05:59:59,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 191. [2023-12-16 05:59:59,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 150 states have (on average 1.4933333333333334) internal successors, (224), 153 states have internal predecessors, (224), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-16 05:59:59,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 290 transitions. [2023-12-16 05:59:59,315 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 290 transitions. Word has length 31 [2023-12-16 05:59:59,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:59:59,315 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 290 transitions. [2023-12-16 05:59:59,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 05:59:59,315 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 290 transitions. [2023-12-16 05:59:59,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 05:59:59,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:59:59,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:59:59,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 05:59:59,316 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:59:59,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:59:59,317 INFO L85 PathProgramCache]: Analyzing trace with hash 424228152, now seen corresponding path program 1 times [2023-12-16 05:59:59,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:59:59,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847945411] [2023-12-16 05:59:59,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:59:59,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:59:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:59:59,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:59:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:59:59,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 05:59:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:59:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 05:59:59,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:59:59,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847945411] [2023-12-16 05:59:59,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847945411] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 05:59:59,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946160113] [2023-12-16 05:59:59,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:59:59,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:59:59,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:59:59,411 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 05:59:59,413 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 05:59:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:59:59,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 05:59:59,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:59:59,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 05:59:59,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 05:59:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 05:59:59,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946160113] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 05:59:59,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 05:59:59,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-12-16 05:59:59,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918461262] [2023-12-16 05:59:59,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 05:59:59,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 05:59:59,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:59:59,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 05:59:59,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 05:59:59,584 INFO L87 Difference]: Start difference. First operand 191 states and 290 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 05:59:59,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:59:59,623 INFO L93 Difference]: Finished difference Result 431 states and 668 transitions. [2023-12-16 05:59:59,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 05:59:59,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2023-12-16 05:59:59,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:59:59,626 INFO L225 Difference]: With dead ends: 431 [2023-12-16 05:59:59,626 INFO L226 Difference]: Without dead ends: 250 [2023-12-16 05:59:59,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 05:59:59,627 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 73 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:59:59,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 780 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:59:59,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-12-16 05:59:59,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2023-12-16 05:59:59,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 193 states have (on average 1.4663212435233162) internal successors, (283), 196 states have internal predecessors, (283), 43 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 05:59:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 369 transitions. [2023-12-16 05:59:59,646 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 369 transitions. Word has length 34 [2023-12-16 05:59:59,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:59:59,647 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 369 transitions. [2023-12-16 05:59:59,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 05:59:59,647 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 369 transitions. [2023-12-16 05:59:59,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-16 05:59:59,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:59:59,653 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:59:59,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 05:59:59,858 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,SelfDestructingSolverStorable5 [2023-12-16 05:59:59,859 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:59:59,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:59:59,860 INFO L85 PathProgramCache]: Analyzing trace with hash 895414040, now seen corresponding path program 2 times [2023-12-16 05:59:59,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:59:59,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410341106] [2023-12-16 05:59:59,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:59:59,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:59:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:59:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:59:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:59:59,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 05:59:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:59:59,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:59:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:59:59,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 05:59:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:59:59,926 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-16 05:59:59,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:59:59,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410341106] [2023-12-16 05:59:59,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410341106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:59:59,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:59:59,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 05:59:59,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572193052] [2023-12-16 05:59:59,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:59:59,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 05:59:59,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:59:59,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 05:59:59,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 05:59:59,928 INFO L87 Difference]: Start difference. First operand 244 states and 369 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 05:59:59,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:00,000 INFO L93 Difference]: Finished difference Result 499 states and 765 transitions. [2023-12-16 06:00:00,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:00,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2023-12-16 06:00:00,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:00,003 INFO L225 Difference]: With dead ends: 499 [2023-12-16 06:00:00,003 INFO L226 Difference]: Without dead ends: 283 [2023-12-16 06:00:00,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:00,004 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 24 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:00,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 784 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:00,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-16 06:00:00,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 280. [2023-12-16 06:00:00,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 225 states have (on average 1.4222222222222223) internal successors, (320), 228 states have internal predecessors, (320), 46 states have call successors, (46), 8 states have call predecessors, (46), 8 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-16 06:00:00,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 412 transitions. [2023-12-16 06:00:00,019 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 412 transitions. Word has length 56 [2023-12-16 06:00:00,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:00,019 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 412 transitions. [2023-12-16 06:00:00,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 06:00:00,019 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 412 transitions. [2023-12-16 06:00:00,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-16 06:00:00,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:00,021 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:00,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 06:00:00,021 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:00,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:00,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1856324599, now seen corresponding path program 1 times [2023-12-16 06:00:00,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:00,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471168984] [2023-12-16 06:00:00,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:00,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,103 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-16 06:00:00,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:00,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471168984] [2023-12-16 06:00:00,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471168984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:00,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:00,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:00,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765101653] [2023-12-16 06:00:00,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:00,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:00,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:00,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:00,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:00,105 INFO L87 Difference]: Start difference. First operand 280 states and 412 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 06:00:00,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:00,153 INFO L93 Difference]: Finished difference Result 536 states and 812 transitions. [2023-12-16 06:00:00,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:00,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2023-12-16 06:00:00,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:00,156 INFO L225 Difference]: With dead ends: 536 [2023-12-16 06:00:00,156 INFO L226 Difference]: Without dead ends: 289 [2023-12-16 06:00:00,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:00,158 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 19 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:00,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 771 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:00,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-16 06:00:00,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2023-12-16 06:00:00,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 231 states have (on average 1.41991341991342) internal successors, (328), 234 states have internal predecessors, (328), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-16 06:00:00,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 420 transitions. [2023-12-16 06:00:00,175 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 420 transitions. Word has length 56 [2023-12-16 06:00:00,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:00,175 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 420 transitions. [2023-12-16 06:00:00,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 06:00:00,176 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 420 transitions. [2023-12-16 06:00:00,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 06:00:00,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:00,178 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:00,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 06:00:00,178 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:00,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:00,178 INFO L85 PathProgramCache]: Analyzing trace with hash 452708196, now seen corresponding path program 1 times [2023-12-16 06:00:00,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:00,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262914021] [2023-12-16 06:00:00,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:00,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-16 06:00:00,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:00,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262914021] [2023-12-16 06:00:00,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262914021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:00,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:00,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:00:00,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537800813] [2023-12-16 06:00:00,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:00,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:00:00,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:00,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:00:00,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:00,281 INFO L87 Difference]: Start difference. First operand 287 states and 420 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 06:00:00,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:00,305 INFO L93 Difference]: Finished difference Result 524 states and 780 transitions. [2023-12-16 06:00:00,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:00,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 74 [2023-12-16 06:00:00,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:00,308 INFO L225 Difference]: With dead ends: 524 [2023-12-16 06:00:00,308 INFO L226 Difference]: Without dead ends: 289 [2023-12-16 06:00:00,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:00,310 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 0 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:00,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1047 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:00,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-16 06:00:00,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2023-12-16 06:00:00,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 231 states have (on average 1.406926406926407) internal successors, (325), 234 states have internal predecessors, (325), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-16 06:00:00,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 417 transitions. [2023-12-16 06:00:00,323 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 417 transitions. Word has length 74 [2023-12-16 06:00:00,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:00,325 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 417 transitions. [2023-12-16 06:00:00,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 06:00:00,325 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 417 transitions. [2023-12-16 06:00:00,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-16 06:00:00,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:00,326 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:00,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 06:00:00,326 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:00,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:00,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1073627768, now seen corresponding path program 1 times [2023-12-16 06:00:00,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:00,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394956565] [2023-12-16 06:00:00,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:00,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,424 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-16 06:00:00,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:00,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394956565] [2023-12-16 06:00:00,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394956565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:00,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:00,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:00,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994887611] [2023-12-16 06:00:00,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:00,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:00,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:00,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:00,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:00,426 INFO L87 Difference]: Start difference. First operand 287 states and 417 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 06:00:00,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:00,476 INFO L93 Difference]: Finished difference Result 561 states and 836 transitions. [2023-12-16 06:00:00,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:00,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 103 [2023-12-16 06:00:00,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:00,480 INFO L225 Difference]: With dead ends: 561 [2023-12-16 06:00:00,480 INFO L226 Difference]: Without dead ends: 331 [2023-12-16 06:00:00,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:00,481 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 25 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:00,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 784 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:00,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-16 06:00:00,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 328. [2023-12-16 06:00:00,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 268 states have (on average 1.3694029850746268) internal successors, (367), 271 states have internal predecessors, (367), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-16 06:00:00,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 465 transitions. [2023-12-16 06:00:00,510 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 465 transitions. Word has length 103 [2023-12-16 06:00:00,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:00,510 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 465 transitions. [2023-12-16 06:00:00,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 06:00:00,511 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 465 transitions. [2023-12-16 06:00:00,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-16 06:00:00,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:00,512 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:00,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 06:00:00,512 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:00,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:00,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1618665253, now seen corresponding path program 1 times [2023-12-16 06:00:00,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:00,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676231749] [2023-12-16 06:00:00,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:00,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-12-16 06:00:00,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:00,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676231749] [2023-12-16 06:00:00,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676231749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:00,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:00,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:00,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914370482] [2023-12-16 06:00:00,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:00,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:00,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:00,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:00,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:00,643 INFO L87 Difference]: Start difference. First operand 328 states and 465 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 06:00:00,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:00,689 INFO L93 Difference]: Finished difference Result 587 states and 856 transitions. [2023-12-16 06:00:00,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:00:00,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 104 [2023-12-16 06:00:00,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:00,692 INFO L225 Difference]: With dead ends: 587 [2023-12-16 06:00:00,692 INFO L226 Difference]: Without dead ends: 322 [2023-12-16 06:00:00,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:00,693 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 15 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:00,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 744 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:00,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-12-16 06:00:00,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2023-12-16 06:00:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 263 states have (on average 1.349809885931559) internal successors, (355), 266 states have internal predecessors, (355), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-16 06:00:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 451 transitions. [2023-12-16 06:00:00,707 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 451 transitions. Word has length 104 [2023-12-16 06:00:00,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:00,708 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 451 transitions. [2023-12-16 06:00:00,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 06:00:00,708 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 451 transitions. [2023-12-16 06:00:00,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-16 06:00:00,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:00,709 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:00,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 06:00:00,710 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:00,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:00,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1079619414, now seen corresponding path program 1 times [2023-12-16 06:00:00,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:00,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130407935] [2023-12-16 06:00:00,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:00,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-16 06:00:00,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:00,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130407935] [2023-12-16 06:00:00,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130407935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:00,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:00,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:00:00,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653440859] [2023-12-16 06:00:00,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:00,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:00:00,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:00,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:00:00,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:00,817 INFO L87 Difference]: Start difference. First operand 322 states and 451 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 06:00:00,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:00,839 INFO L93 Difference]: Finished difference Result 562 states and 805 transitions. [2023-12-16 06:00:00,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:00,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 123 [2023-12-16 06:00:00,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:00,841 INFO L225 Difference]: With dead ends: 562 [2023-12-16 06:00:00,841 INFO L226 Difference]: Without dead ends: 324 [2023-12-16 06:00:00,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:00,842 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:00,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1031 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:00,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-12-16 06:00:00,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 322. [2023-12-16 06:00:00,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 263 states have (on average 1.338403041825095) internal successors, (352), 266 states have internal predecessors, (352), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-16 06:00:00,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 448 transitions. [2023-12-16 06:00:00,852 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 448 transitions. Word has length 123 [2023-12-16 06:00:00,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:00,852 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 448 transitions. [2023-12-16 06:00:00,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 06:00:00,852 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 448 transitions. [2023-12-16 06:00:00,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-16 06:00:00,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:00,853 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 06:00:00,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 06:00:00,854 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:00,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:00,854 INFO L85 PathProgramCache]: Analyzing trace with hash -955046142, now seen corresponding path program 1 times [2023-12-16 06:00:00,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:00,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113504615] [2023-12-16 06:00:00,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:00,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:00,941 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2023-12-16 06:00:00,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:00,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113504615] [2023-12-16 06:00:00,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113504615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:00,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:00,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:00,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527921827] [2023-12-16 06:00:00,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:00,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:00,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:00,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:00,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:00,943 INFO L87 Difference]: Start difference. First operand 322 states and 448 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 06:00:00,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:00,984 INFO L93 Difference]: Finished difference Result 525 states and 765 transitions. [2023-12-16 06:00:00,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:00:00,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 156 [2023-12-16 06:00:00,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:00,986 INFO L225 Difference]: With dead ends: 525 [2023-12-16 06:00:00,986 INFO L226 Difference]: Without dead ends: 320 [2023-12-16 06:00:00,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:00,988 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 13 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:00,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 712 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:00,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-12-16 06:00:00,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2023-12-16 06:00:00,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 262 states have (on average 1.3358778625954197) internal successors, (350), 265 states have internal predecessors, (350), 47 states have call successors, (47), 10 states have call predecessors, (47), 10 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-16 06:00:00,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 444 transitions. [2023-12-16 06:00:00,998 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 444 transitions. Word has length 156 [2023-12-16 06:00:00,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:00,998 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 444 transitions. [2023-12-16 06:00:00,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 06:00:00,998 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 444 transitions. [2023-12-16 06:00:01,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-16 06:00:01,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:01,000 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 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 06:00:01,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 06:00:01,001 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:01,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:01,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1482802370, now seen corresponding path program 1 times [2023-12-16 06:00:01,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:01,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589448675] [2023-12-16 06:00:01,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:01,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,117 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2023-12-16 06:00:01,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:01,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589448675] [2023-12-16 06:00:01,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589448675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:01,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:01,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:01,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704194211] [2023-12-16 06:00:01,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:01,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:01,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:01,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:01,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:01,119 INFO L87 Difference]: Start difference. First operand 320 states and 444 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 06:00:01,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:01,164 INFO L93 Difference]: Finished difference Result 465 states and 661 transitions. [2023-12-16 06:00:01,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:01,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 171 [2023-12-16 06:00:01,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:01,166 INFO L225 Difference]: With dead ends: 465 [2023-12-16 06:00:01,166 INFO L226 Difference]: Without dead ends: 303 [2023-12-16 06:00:01,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:01,168 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 35 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:01,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 693 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-12-16 06:00:01,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2023-12-16 06:00:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 248 states have (on average 1.3266129032258065) internal successors, (329), 251 states have internal predecessors, (329), 44 states have call successors, (44), 10 states have call predecessors, (44), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-16 06:00:01,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 417 transitions. [2023-12-16 06:00:01,179 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 417 transitions. Word has length 171 [2023-12-16 06:00:01,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:01,179 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 417 transitions. [2023-12-16 06:00:01,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 06:00:01,179 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 417 transitions. [2023-12-16 06:00:01,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-16 06:00:01,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:01,180 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 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 06:00:01,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 06:00:01,181 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:01,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:01,181 INFO L85 PathProgramCache]: Analyzing trace with hash 520522913, now seen corresponding path program 1 times [2023-12-16 06:00:01,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:01,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472614709] [2023-12-16 06:00:01,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:01,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2023-12-16 06:00:01,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:01,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472614709] [2023-12-16 06:00:01,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472614709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:01,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:01,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:01,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389059887] [2023-12-16 06:00:01,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:01,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:01,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:01,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:01,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:01,311 INFO L87 Difference]: Start difference. First operand 303 states and 417 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 06:00:01,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:01,365 INFO L93 Difference]: Finished difference Result 448 states and 634 transitions. [2023-12-16 06:00:01,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:01,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 173 [2023-12-16 06:00:01,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:01,367 INFO L225 Difference]: With dead ends: 448 [2023-12-16 06:00:01,367 INFO L226 Difference]: Without dead ends: 284 [2023-12-16 06:00:01,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:01,368 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 30 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:01,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 697 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:01,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-16 06:00:01,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2023-12-16 06:00:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 232 states have (on average 1.3189655172413792) internal successors, (306), 235 states have internal predecessors, (306), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-16 06:00:01,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 388 transitions. [2023-12-16 06:00:01,377 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 388 transitions. Word has length 173 [2023-12-16 06:00:01,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:01,377 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 388 transitions. [2023-12-16 06:00:01,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 06:00:01,377 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 388 transitions. [2023-12-16 06:00:01,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-16 06:00:01,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:01,379 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:01,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 06:00:01,379 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:01,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:01,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1655232664, now seen corresponding path program 1 times [2023-12-16 06:00:01,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:01,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674925937] [2023-12-16 06:00:01,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:01,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:01,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,640 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2023-12-16 06:00:01,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:01,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674925937] [2023-12-16 06:00:01,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674925937] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:01,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:01,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:00:01,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406456663] [2023-12-16 06:00:01,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:01,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:00:01,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:01,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:00:01,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:01,642 INFO L87 Difference]: Start difference. First operand 284 states and 388 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 06:00:01,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:01,679 INFO L93 Difference]: Finished difference Result 428 states and 604 transitions. [2023-12-16 06:00:01,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:01,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 174 [2023-12-16 06:00:01,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:01,681 INFO L225 Difference]: With dead ends: 428 [2023-12-16 06:00:01,681 INFO L226 Difference]: Without dead ends: 284 [2023-12-16 06:00:01,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:01,682 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 0 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:01,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1009 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:01,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-16 06:00:01,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2023-12-16 06:00:01,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 232 states have (on average 1.293103448275862) internal successors, (300), 235 states have internal predecessors, (300), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-16 06:00:01,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 382 transitions. [2023-12-16 06:00:01,706 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 382 transitions. Word has length 174 [2023-12-16 06:00:01,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:01,706 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 382 transitions. [2023-12-16 06:00:01,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 06:00:01,706 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 382 transitions. [2023-12-16 06:00:01,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-16 06:00:01,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:01,708 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 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 06:00:01,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 06:00:01,708 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:01,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:01,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1746472809, now seen corresponding path program 1 times [2023-12-16 06:00:01,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:01,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816303158] [2023-12-16 06:00:01,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:01,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:01,910 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-12-16 06:00:01,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:01,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816303158] [2023-12-16 06:00:01,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816303158] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:01,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261155211] [2023-12-16 06:00:01,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:01,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:01,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:01,913 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 06:00:01,968 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 06:00:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 06:00:02,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-12-16 06:00:02,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:00:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-12-16 06:00:02,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261155211] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:02,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:00:02,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2023-12-16 06:00:02,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674901951] [2023-12-16 06:00:02,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:02,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:02,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:02,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:02,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:02,228 INFO L87 Difference]: Start difference. First operand 284 states and 382 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 06:00:02,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:02,266 INFO L93 Difference]: Finished difference Result 449 states and 626 transitions. [2023-12-16 06:00:02,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:00:02,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 181 [2023-12-16 06:00:02,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:02,268 INFO L225 Difference]: With dead ends: 449 [2023-12-16 06:00:02,268 INFO L226 Difference]: Without dead ends: 263 [2023-12-16 06:00:02,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:02,269 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 30 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:02,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 477 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:02,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-12-16 06:00:02,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2023-12-16 06:00:02,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 214 states have (on average 1.2850467289719627) internal successors, (275), 217 states have internal predecessors, (275), 38 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-16 06:00:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 351 transitions. [2023-12-16 06:00:02,278 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 351 transitions. Word has length 181 [2023-12-16 06:00:02,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:02,278 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 351 transitions. [2023-12-16 06:00:02,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 06:00:02,278 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 351 transitions. [2023-12-16 06:00:02,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-16 06:00:02,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:02,279 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 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 06:00:02,288 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 06:00:02,485 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,SelfDestructingSolverStorable16 [2023-12-16 06:00:02,486 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:02,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:02,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1271681116, now seen corresponding path program 1 times [2023-12-16 06:00:02,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:02,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220190996] [2023-12-16 06:00:02,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:02,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-12-16 06:00:02,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:02,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220190996] [2023-12-16 06:00:02,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220190996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:02,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:02,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:02,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270557491] [2023-12-16 06:00:02,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:02,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:02,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:02,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:02,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:02,583 INFO L87 Difference]: Start difference. First operand 263 states and 351 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 06:00:02,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:02,608 INFO L93 Difference]: Finished difference Result 406 states and 568 transitions. [2023-12-16 06:00:02,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:02,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 205 [2023-12-16 06:00:02,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:02,610 INFO L225 Difference]: With dead ends: 406 [2023-12-16 06:00:02,610 INFO L226 Difference]: Without dead ends: 269 [2023-12-16 06:00:02,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:02,611 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 6 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:02,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 737 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:02,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-16 06:00:02,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 267. [2023-12-16 06:00:02,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 217 states have (on average 1.2811059907834101) internal successors, (278), 220 states have internal predecessors, (278), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-16 06:00:02,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 354 transitions. [2023-12-16 06:00:02,620 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 354 transitions. Word has length 205 [2023-12-16 06:00:02,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:02,620 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 354 transitions. [2023-12-16 06:00:02,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 06:00:02,620 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 354 transitions. [2023-12-16 06:00:02,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-16 06:00:02,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:02,622 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:02,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 06:00:02,622 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:02,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:02,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1233341410, now seen corresponding path program 1 times [2023-12-16 06:00:02,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:02,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547282127] [2023-12-16 06:00:02,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:02,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-12-16 06:00:02,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:02,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547282127] [2023-12-16 06:00:02,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547282127] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:02,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980611463] [2023-12-16 06:00:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:02,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:02,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:02,770 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:02,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 06:00:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:02,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 06:00:02,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-12-16 06:00:02,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:02,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980611463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:02,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:02,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-12-16 06:00:02,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028323644] [2023-12-16 06:00:02,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:02,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:02,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:02,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:02,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:02,917 INFO L87 Difference]: Start difference. First operand 267 states and 354 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 06:00:02,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:02,944 INFO L93 Difference]: Finished difference Result 415 states and 575 transitions. [2023-12-16 06:00:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:02,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 212 [2023-12-16 06:00:02,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:02,946 INFO L225 Difference]: With dead ends: 415 [2023-12-16 06:00:02,946 INFO L226 Difference]: Without dead ends: 274 [2023-12-16 06:00:02,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:00:02,947 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 7 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:02,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 742 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:02,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-12-16 06:00:02,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 272. [2023-12-16 06:00:02,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 221 states have (on average 1.2760180995475112) internal successors, (282), 224 states have internal predecessors, (282), 38 states have call successors, (38), 12 states have call predecessors, (38), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-16 06:00:02,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 358 transitions. [2023-12-16 06:00:02,955 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 358 transitions. Word has length 212 [2023-12-16 06:00:02,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:02,956 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 358 transitions. [2023-12-16 06:00:02,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 06:00:02,956 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 358 transitions. [2023-12-16 06:00:02,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-16 06:00:02,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:02,958 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:02,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:03,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:03,165 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:03,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:03,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1184005805, now seen corresponding path program 1 times [2023-12-16 06:00:03,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:03,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592548918] [2023-12-16 06:00:03,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:03,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-16 06:00:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,331 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2023-12-16 06:00:03,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:03,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592548918] [2023-12-16 06:00:03,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592548918] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:03,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786094238] [2023-12-16 06:00:03,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:03,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:03,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:03,334 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:03,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 06:00:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 06:00:03,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:03,519 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2023-12-16 06:00:03,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:03,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786094238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:03,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:03,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-12-16 06:00:03,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891582522] [2023-12-16 06:00:03,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:03,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:03,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:03,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:03,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:03,521 INFO L87 Difference]: Start difference. First operand 272 states and 358 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-16 06:00:03,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:03,555 INFO L93 Difference]: Finished difference Result 417 states and 573 transitions. [2023-12-16 06:00:03,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:00:03,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 220 [2023-12-16 06:00:03,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:03,558 INFO L225 Difference]: With dead ends: 417 [2023-12-16 06:00:03,558 INFO L226 Difference]: Without dead ends: 271 [2023-12-16 06:00:03,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:00:03,559 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 7 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:03,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 728 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:03,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-12-16 06:00:03,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2023-12-16 06:00:03,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 221 states have (on average 1.262443438914027) internal successors, (279), 223 states have internal predecessors, (279), 37 states have call successors, (37), 12 states have call predecessors, (37), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-16 06:00:03,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 353 transitions. [2023-12-16 06:00:03,572 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 353 transitions. Word has length 220 [2023-12-16 06:00:03,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:03,572 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 353 transitions. [2023-12-16 06:00:03,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-16 06:00:03,573 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 353 transitions. [2023-12-16 06:00:03,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-16 06:00:03,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:03,575 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:03,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:03,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:03,783 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:03,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:03,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1274064016, now seen corresponding path program 1 times [2023-12-16 06:00:03,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:03,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086060521] [2023-12-16 06:00:03,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:03,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-16 06:00:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-16 06:00:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2023-12-16 06:00:03,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:03,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086060521] [2023-12-16 06:00:03,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086060521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:03,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:03,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:03,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692595335] [2023-12-16 06:00:03,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:03,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:03,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:03,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:03,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:03,926 INFO L87 Difference]: Start difference. First operand 271 states and 353 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-16 06:00:04,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:04,120 INFO L93 Difference]: Finished difference Result 415 states and 562 transitions. [2023-12-16 06:00:04,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:00:04,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 228 [2023-12-16 06:00:04,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:04,122 INFO L225 Difference]: With dead ends: 415 [2023-12-16 06:00:04,122 INFO L226 Difference]: Without dead ends: 270 [2023-12-16 06:00:04,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:04,123 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 60 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:04,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 473 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:00:04,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-16 06:00:04,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2023-12-16 06:00:04,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 221 states have (on average 1.257918552036199) internal successors, (278), 222 states have internal predecessors, (278), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-16 06:00:04,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 350 transitions. [2023-12-16 06:00:04,142 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 350 transitions. Word has length 228 [2023-12-16 06:00:04,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:04,142 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 350 transitions. [2023-12-16 06:00:04,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-16 06:00:04,142 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 350 transitions. [2023-12-16 06:00:04,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-16 06:00:04,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:04,145 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:04,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 06:00:04,145 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:04,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:04,145 INFO L85 PathProgramCache]: Analyzing trace with hash -665571617, now seen corresponding path program 1 times [2023-12-16 06:00:04,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:04,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998822174] [2023-12-16 06:00:04,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:04,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-16 06:00:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-16 06:00:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2023-12-16 06:00:04,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:04,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998822174] [2023-12-16 06:00:04,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998822174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:04,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:04,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:00:04,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310670293] [2023-12-16 06:00:04,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:04,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:00:04,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:04,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:00:04,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:04,394 INFO L87 Difference]: Start difference. First operand 270 states and 350 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-16 06:00:04,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:04,772 INFO L93 Difference]: Finished difference Result 619 states and 830 transitions. [2023-12-16 06:00:04,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 06:00:04,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 230 [2023-12-16 06:00:04,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:04,776 INFO L225 Difference]: With dead ends: 619 [2023-12-16 06:00:04,776 INFO L226 Difference]: Without dead ends: 475 [2023-12-16 06:00:04,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:00:04,777 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 407 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:04,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 617 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 06:00:04,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-12-16 06:00:04,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 421. [2023-12-16 06:00:04,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 342 states have (on average 1.304093567251462) internal successors, (446), 344 states have internal predecessors, (446), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-16 06:00:04,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 554 transitions. [2023-12-16 06:00:04,799 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 554 transitions. Word has length 230 [2023-12-16 06:00:04,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:04,800 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 554 transitions. [2023-12-16 06:00:04,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-16 06:00:04,814 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 554 transitions. [2023-12-16 06:00:04,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-12-16 06:00:04,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:04,818 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:04,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 06:00:04,818 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:04,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:04,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2013258127, now seen corresponding path program 1 times [2023-12-16 06:00:04,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:04,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895731480] [2023-12-16 06:00:04,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:04,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-16 06:00:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-16 06:00:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-12-16 06:00:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-16 06:00:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-16 06:00:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-12-16 06:00:04,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:04,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895731480] [2023-12-16 06:00:04,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895731480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:04,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:04,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:04,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652707236] [2023-12-16 06:00:04,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:04,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:04,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:04,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:04,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:04,953 INFO L87 Difference]: Start difference. First operand 421 states and 554 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-16 06:00:05,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:05,316 INFO L93 Difference]: Finished difference Result 889 states and 1224 transitions. [2023-12-16 06:00:05,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:05,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 257 [2023-12-16 06:00:05,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:05,320 INFO L225 Difference]: With dead ends: 889 [2023-12-16 06:00:05,320 INFO L226 Difference]: Without dead ends: 662 [2023-12-16 06:00:05,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:05,322 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 220 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:05,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 470 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 06:00:05,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-12-16 06:00:05,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 500. [2023-12-16 06:00:05,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 411 states have (on average 1.316301703163017) internal successors, (541), 414 states have internal predecessors, (541), 59 states have call successors, (59), 29 states have call predecessors, (59), 29 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-16 06:00:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 659 transitions. [2023-12-16 06:00:05,357 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 659 transitions. Word has length 257 [2023-12-16 06:00:05,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:05,357 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 659 transitions. [2023-12-16 06:00:05,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-16 06:00:05,358 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 659 transitions. [2023-12-16 06:00:05,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-16 06:00:05,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:05,361 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:05,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-16 06:00:05,361 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:05,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:05,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1455159987, now seen corresponding path program 1 times [2023-12-16 06:00:05,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:05,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743508443] [2023-12-16 06:00:05,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:05,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-16 06:00:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-16 06:00:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-16 06:00:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-12-16 06:00:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-12-16 06:00:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-12-16 06:00:05,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:05,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743508443] [2023-12-16 06:00:05,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743508443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:05,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:05,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:05,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201826205] [2023-12-16 06:00:05,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:05,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:05,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:05,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:05,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:05,478 INFO L87 Difference]: Start difference. First operand 500 states and 659 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-16 06:00:05,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:05,756 INFO L93 Difference]: Finished difference Result 1060 states and 1455 transitions. [2023-12-16 06:00:05,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:05,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 258 [2023-12-16 06:00:05,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:05,759 INFO L225 Difference]: With dead ends: 1060 [2023-12-16 06:00:05,760 INFO L226 Difference]: Without dead ends: 783 [2023-12-16 06:00:05,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:05,761 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 221 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:05,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 498 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:00:05,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2023-12-16 06:00:05,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 608. [2023-12-16 06:00:05,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 507 states have (on average 1.331360946745562) internal successors, (675), 512 states have internal predecessors, (675), 65 states have call successors, (65), 35 states have call predecessors, (65), 35 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-16 06:00:05,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 805 transitions. [2023-12-16 06:00:05,807 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 805 transitions. Word has length 258 [2023-12-16 06:00:05,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:05,807 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 805 transitions. [2023-12-16 06:00:05,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-16 06:00:05,807 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 805 transitions. [2023-12-16 06:00:05,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-12-16 06:00:05,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:05,809 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:05,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-16 06:00:05,810 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:05,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:05,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1232443562, now seen corresponding path program 1 times [2023-12-16 06:00:05,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:05,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786917521] [2023-12-16 06:00:05,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:05,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-16 06:00:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-16 06:00:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-16 06:00:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 06:00:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-12-16 06:00:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,036 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-12-16 06:00:06,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:06,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786917521] [2023-12-16 06:00:06,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786917521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:06,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:06,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:06,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862871945] [2023-12-16 06:00:06,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:06,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:06,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:06,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:06,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:06,038 INFO L87 Difference]: Start difference. First operand 608 states and 805 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-16 06:00:06,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:06,359 INFO L93 Difference]: Finished difference Result 1270 states and 1749 transitions. [2023-12-16 06:00:06,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:06,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 259 [2023-12-16 06:00:06,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:06,362 INFO L225 Difference]: With dead ends: 1270 [2023-12-16 06:00:06,362 INFO L226 Difference]: Without dead ends: 917 [2023-12-16 06:00:06,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:06,364 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 221 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:06,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 525 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 06:00:06,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2023-12-16 06:00:06,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 714. [2023-12-16 06:00:06,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 605 states have (on average 1.3537190082644628) internal successors, (819), 614 states have internal predecessors, (819), 69 states have call successors, (69), 39 states have call predecessors, (69), 39 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-16 06:00:06,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 957 transitions. [2023-12-16 06:00:06,397 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 957 transitions. Word has length 259 [2023-12-16 06:00:06,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:06,397 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 957 transitions. [2023-12-16 06:00:06,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-16 06:00:06,398 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 957 transitions. [2023-12-16 06:00:06,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-12-16 06:00:06,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:06,399 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:06,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-16 06:00:06,400 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:06,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:06,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1507203176, now seen corresponding path program 1 times [2023-12-16 06:00:06,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:06,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344347765] [2023-12-16 06:00:06,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:06,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-16 06:00:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-16 06:00:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-16 06:00:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 06:00:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-12-16 06:00:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2023-12-16 06:00:06,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:06,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344347765] [2023-12-16 06:00:06,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344347765] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:06,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878768764] [2023-12-16 06:00:06,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:06,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:06,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:06,587 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:06,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 06:00:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:00:06,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2023-12-16 06:00:06,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:06,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878768764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:06,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:06,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-12-16 06:00:06,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093857515] [2023-12-16 06:00:06,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:06,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:06,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:06,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:06,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-16 06:00:06,768 INFO L87 Difference]: Start difference. First operand 714 states and 957 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-16 06:00:06,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:06,871 INFO L93 Difference]: Finished difference Result 1177 states and 1621 transitions. [2023-12-16 06:00:06,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:06,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 259 [2023-12-16 06:00:06,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:06,875 INFO L225 Difference]: With dead ends: 1177 [2023-12-16 06:00:06,875 INFO L226 Difference]: Without dead ends: 714 [2023-12-16 06:00:06,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-16 06:00:06,876 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 51 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:06,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 645 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:06,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2023-12-16 06:00:06,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 714. [2023-12-16 06:00:06,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 605 states have (on average 1.343801652892562) internal successors, (813), 614 states have internal predecessors, (813), 69 states have call successors, (69), 39 states have call predecessors, (69), 39 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-16 06:00:06,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 951 transitions. [2023-12-16 06:00:06,909 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 951 transitions. Word has length 259 [2023-12-16 06:00:06,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:06,909 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 951 transitions. [2023-12-16 06:00:06,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-16 06:00:06,909 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 951 transitions. [2023-12-16 06:00:06,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-16 06:00:06,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:06,911 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:06,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:07,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-16 06:00:07,118 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:07,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:07,118 INFO L85 PathProgramCache]: Analyzing trace with hash 632654985, now seen corresponding path program 1 times [2023-12-16 06:00:07,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:07,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919104843] [2023-12-16 06:00:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:07,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-16 06:00:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-16 06:00:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-16 06:00:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-16 06:00:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-16 06:00:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2023-12-16 06:00:07,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:07,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919104843] [2023-12-16 06:00:07,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919104843] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:07,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898889299] [2023-12-16 06:00:07,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:07,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:07,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:07,291 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:07,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 06:00:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:00:07,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:07,482 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2023-12-16 06:00:07,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:07,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898889299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:07,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:07,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-12-16 06:00:07,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832477936] [2023-12-16 06:00:07,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:07,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:07,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:07,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:07,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-16 06:00:07,484 INFO L87 Difference]: Start difference. First operand 714 states and 951 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-16 06:00:07,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:07,552 INFO L93 Difference]: Finished difference Result 1177 states and 1607 transitions. [2023-12-16 06:00:07,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:07,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 260 [2023-12-16 06:00:07,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:07,555 INFO L225 Difference]: With dead ends: 1177 [2023-12-16 06:00:07,555 INFO L226 Difference]: Without dead ends: 726 [2023-12-16 06:00:07,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-16 06:00:07,556 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 15 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:07,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 668 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:07,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2023-12-16 06:00:07,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 726. [2023-12-16 06:00:07,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 615 states have (on average 1.3447154471544716) internal successors, (827), 624 states have internal predecessors, (827), 69 states have call successors, (69), 41 states have call predecessors, (69), 41 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-16 06:00:07,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 965 transitions. [2023-12-16 06:00:07,622 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 965 transitions. Word has length 260 [2023-12-16 06:00:07,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:07,623 INFO L495 AbstractCegarLoop]: Abstraction has 726 states and 965 transitions. [2023-12-16 06:00:07,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-16 06:00:07,623 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 965 transitions. [2023-12-16 06:00:07,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-12-16 06:00:07,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:07,625 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:07,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:07,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-16 06:00:07,833 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:07,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:07,833 INFO L85 PathProgramCache]: Analyzing trace with hash 75189186, now seen corresponding path program 1 times [2023-12-16 06:00:07,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:07,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757295948] [2023-12-16 06:00:07,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:07,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-16 06:00:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-16 06:00:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-16 06:00:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-16 06:00:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-12-16 06:00:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,002 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-12-16 06:00:08,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:08,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757295948] [2023-12-16 06:00:08,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757295948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:08,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:08,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:08,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052732344] [2023-12-16 06:00:08,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:08,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:08,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:08,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:08,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:08,003 INFO L87 Difference]: Start difference. First operand 726 states and 965 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-16 06:00:08,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:08,178 INFO L93 Difference]: Finished difference Result 1191 states and 1621 transitions. [2023-12-16 06:00:08,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:00:08,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 261 [2023-12-16 06:00:08,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:08,180 INFO L225 Difference]: With dead ends: 1191 [2023-12-16 06:00:08,181 INFO L226 Difference]: Without dead ends: 707 [2023-12-16 06:00:08,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:08,182 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 59 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:08,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 471 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:00:08,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2023-12-16 06:00:08,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2023-12-16 06:00:08,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 597 states have (on average 1.3266331658291457) internal successors, (792), 605 states have internal predecessors, (792), 69 states have call successors, (69), 41 states have call predecessors, (69), 40 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-16 06:00:08,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 929 transitions. [2023-12-16 06:00:08,212 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 929 transitions. Word has length 261 [2023-12-16 06:00:08,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:08,212 INFO L495 AbstractCegarLoop]: Abstraction has 707 states and 929 transitions. [2023-12-16 06:00:08,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-16 06:00:08,212 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 929 transitions. [2023-12-16 06:00:08,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-12-16 06:00:08,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:08,214 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:08,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-16 06:00:08,215 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:08,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:08,215 INFO L85 PathProgramCache]: Analyzing trace with hash -189143771, now seen corresponding path program 1 times [2023-12-16 06:00:08,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:08,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272429166] [2023-12-16 06:00:08,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:08,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-16 06:00:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-16 06:00:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-16 06:00:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-16 06:00:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-16 06:00:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-12-16 06:00:08,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:08,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272429166] [2023-12-16 06:00:08,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272429166] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:08,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:08,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 06:00:08,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345999961] [2023-12-16 06:00:08,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:08,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 06:00:08,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:08,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 06:00:08,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:00:08,525 INFO L87 Difference]: Start difference. First operand 707 states and 929 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 06:00:09,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:09,054 INFO L93 Difference]: Finished difference Result 1021 states and 1421 transitions. [2023-12-16 06:00:09,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 06:00:09,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 262 [2023-12-16 06:00:09,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:09,058 INFO L225 Difference]: With dead ends: 1021 [2023-12-16 06:00:09,058 INFO L226 Difference]: Without dead ends: 1019 [2023-12-16 06:00:09,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-16 06:00:09,059 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 241 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:09,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 1480 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 06:00:09,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2023-12-16 06:00:09,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 713. [2023-12-16 06:00:09,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 601 states have (on average 1.324459234608985) internal successors, (796), 610 states have internal predecessors, (796), 70 states have call successors, (70), 42 states have call predecessors, (70), 41 states have return successors, (69), 67 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-16 06:00:09,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 935 transitions. [2023-12-16 06:00:09,098 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 935 transitions. Word has length 262 [2023-12-16 06:00:09,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:09,098 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 935 transitions. [2023-12-16 06:00:09,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 06:00:09,098 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 935 transitions. [2023-12-16 06:00:09,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-16 06:00:09,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:09,100 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:09,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-16 06:00:09,100 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:09,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:09,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1197847061, now seen corresponding path program 1 times [2023-12-16 06:00:09,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:09,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89386961] [2023-12-16 06:00:09,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:09,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-16 06:00:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-16 06:00:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-16 06:00:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-16 06:00:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-16 06:00:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-12-16 06:00:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2023-12-16 06:00:09,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:09,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89386961] [2023-12-16 06:00:09,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89386961] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:09,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416496446] [2023-12-16 06:00:09,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:09,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:09,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:09,408 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:09,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 06:00:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 06:00:09,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 251 proven. 33 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-12-16 06:00:09,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:00:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2023-12-16 06:00:10,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416496446] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:00:10,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:00:10,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2023-12-16 06:00:10,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872199911] [2023-12-16 06:00:10,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:00:10,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 06:00:10,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:10,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 06:00:10,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-16 06:00:10,022 INFO L87 Difference]: Start difference. First operand 713 states and 935 transitions. Second operand has 19 states, 19 states have (on average 7.578947368421052) internal successors, (144), 14 states have internal predecessors, (144), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2023-12-16 06:00:11,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:11,267 INFO L93 Difference]: Finished difference Result 1772 states and 2442 transitions. [2023-12-16 06:00:11,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 06:00:11,268 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.578947368421052) internal successors, (144), 14 states have internal predecessors, (144), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) Word has length 270 [2023-12-16 06:00:11,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:11,273 INFO L225 Difference]: With dead ends: 1772 [2023-12-16 06:00:11,274 INFO L226 Difference]: Without dead ends: 1320 [2023-12-16 06:00:11,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 582 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 06:00:11,276 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 357 mSDsluCounter, 2088 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:11,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 2314 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 06:00:11,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2023-12-16 06:00:11,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 981. [2023-12-16 06:00:11,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 829 states have (on average 1.3112183353437876) internal successors, (1087), 839 states have internal predecessors, (1087), 94 states have call successors, (94), 55 states have call predecessors, (94), 57 states have return successors, (98), 93 states have call predecessors, (98), 93 states have call successors, (98) [2023-12-16 06:00:11,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1279 transitions. [2023-12-16 06:00:11,364 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1279 transitions. Word has length 270 [2023-12-16 06:00:11,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:11,365 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1279 transitions. [2023-12-16 06:00:11,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.578947368421052) internal successors, (144), 14 states have internal predecessors, (144), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2023-12-16 06:00:11,365 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1279 transitions. [2023-12-16 06:00:11,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-16 06:00:11,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:11,367 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:11,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:11,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:11,573 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:11,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:11,574 INFO L85 PathProgramCache]: Analyzing trace with hash -236233044, now seen corresponding path program 1 times [2023-12-16 06:00:11,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:11,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865315190] [2023-12-16 06:00:11,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:11,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-16 06:00:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-16 06:00:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-16 06:00:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-16 06:00:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-16 06:00:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-12-16 06:00:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,693 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2023-12-16 06:00:11,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:11,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865315190] [2023-12-16 06:00:11,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865315190] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:11,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12182458] [2023-12-16 06:00:11,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:11,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:11,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:11,699 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:11,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 06:00:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 06:00:11,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:11,900 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2023-12-16 06:00:11,900 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:11,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12182458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:11,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:11,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-12-16 06:00:11,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860873997] [2023-12-16 06:00:11,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:11,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:11,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:11,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:11,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:11,903 INFO L87 Difference]: Start difference. First operand 981 states and 1279 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-16 06:00:11,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:11,982 INFO L93 Difference]: Finished difference Result 1826 states and 2423 transitions. [2023-12-16 06:00:11,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:11,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 270 [2023-12-16 06:00:11,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:11,986 INFO L225 Difference]: With dead ends: 1826 [2023-12-16 06:00:11,987 INFO L226 Difference]: Without dead ends: 965 [2023-12-16 06:00:11,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:00:11,989 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 11 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:11,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 665 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:11,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2023-12-16 06:00:12,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 965. [2023-12-16 06:00:12,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 818 states have (on average 1.2995110024449879) internal successors, (1063), 828 states have internal predecessors, (1063), 90 states have call successors, (90), 55 states have call predecessors, (90), 56 states have return successors, (93), 88 states have call predecessors, (93), 89 states have call successors, (93) [2023-12-16 06:00:12,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1246 transitions. [2023-12-16 06:00:12,034 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1246 transitions. Word has length 270 [2023-12-16 06:00:12,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:12,034 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1246 transitions. [2023-12-16 06:00:12,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-16 06:00:12,034 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1246 transitions. [2023-12-16 06:00:12,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-16 06:00:12,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:12,036 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:12,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:12,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-16 06:00:12,243 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:12,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:12,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1167214169, now seen corresponding path program 1 times [2023-12-16 06:00:12,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:12,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587096537] [2023-12-16 06:00:12,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:12,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 06:00:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 06:00:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-16 06:00:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-12-16 06:00:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-12-16 06:00:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-16 06:00:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-16 06:00:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-16 06:00:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-12-16 06:00:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2023-12-16 06:00:12,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:12,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587096537] [2023-12-16 06:00:12,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587096537] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:12,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186622721] [2023-12-16 06:00:12,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:12,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:12,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:12,376 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:12,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 06:00:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 06:00:12,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:12,612 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-12-16 06:00:12,613 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:12,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186622721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:12,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:12,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-12-16 06:00:12,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797000497] [2023-12-16 06:00:12,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:12,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:12,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:12,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:12,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:12,614 INFO L87 Difference]: Start difference. First operand 965 states and 1246 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 06:00:12,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:12,707 INFO L93 Difference]: Finished difference Result 1674 states and 2207 transitions. [2023-12-16 06:00:12,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:12,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 273 [2023-12-16 06:00:12,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:12,710 INFO L225 Difference]: With dead ends: 1674 [2023-12-16 06:00:12,710 INFO L226 Difference]: Without dead ends: 820 [2023-12-16 06:00:12,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:00:12,712 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 8 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:12,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 668 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:12,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2023-12-16 06:00:12,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2023-12-16 06:00:12,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 691 states have (on average 1.3024602026049203) internal successors, (900), 701 states have internal predecessors, (900), 81 states have call successors, (81), 48 states have call predecessors, (81), 47 states have return successors, (80), 77 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-16 06:00:12,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1061 transitions. [2023-12-16 06:00:12,761 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1061 transitions. Word has length 273 [2023-12-16 06:00:12,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:12,762 INFO L495 AbstractCegarLoop]: Abstraction has 820 states and 1061 transitions. [2023-12-16 06:00:12,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 06:00:12,762 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1061 transitions. [2023-12-16 06:00:12,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-12-16 06:00:12,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:12,764 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:12,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:12,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:12,970 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:12,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:12,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1310518252, now seen corresponding path program 1 times [2023-12-16 06:00:12,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:12,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280916470] [2023-12-16 06:00:12,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:12,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-16 06:00:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-16 06:00:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-16 06:00:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-16 06:00:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-16 06:00:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-12-16 06:00:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-12-16 06:00:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2023-12-16 06:00:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 16 proven. 146 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2023-12-16 06:00:13,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:13,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280916470] [2023-12-16 06:00:13,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280916470] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:13,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833019946] [2023-12-16 06:00:13,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:13,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:13,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:13,655 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:13,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 06:00:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-16 06:00:13,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:13,996 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2023-12-16 06:00:13,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:13,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833019946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:13,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:13,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 23 [2023-12-16 06:00:13,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826686846] [2023-12-16 06:00:13,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:13,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 06:00:13,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:13,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 06:00:13,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2023-12-16 06:00:13,999 INFO L87 Difference]: Start difference. First operand 820 states and 1061 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-16 06:00:14,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:14,533 INFO L93 Difference]: Finished difference Result 2186 states and 2833 transitions. [2023-12-16 06:00:14,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 06:00:14,534 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 285 [2023-12-16 06:00:14,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:14,539 INFO L225 Difference]: With dead ends: 2186 [2023-12-16 06:00:14,539 INFO L226 Difference]: Without dead ends: 1727 [2023-12-16 06:00:14,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 327 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=1196, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 06:00:14,541 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 626 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:14,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 2773 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 06:00:14,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2023-12-16 06:00:14,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1353. [2023-12-16 06:00:14,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 1126 states have (on average 1.2815275310834813) internal successors, (1443), 1141 states have internal predecessors, (1443), 149 states have call successors, (149), 78 states have call predecessors, (149), 77 states have return successors, (148), 140 states have call predecessors, (148), 148 states have call successors, (148) [2023-12-16 06:00:14,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 1740 transitions. [2023-12-16 06:00:14,605 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 1740 transitions. Word has length 285 [2023-12-16 06:00:14,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:14,605 INFO L495 AbstractCegarLoop]: Abstraction has 1353 states and 1740 transitions. [2023-12-16 06:00:14,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-16 06:00:14,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 1740 transitions. [2023-12-16 06:00:14,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-16 06:00:14,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:14,607 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:14,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-16 06:00:14,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-16 06:00:14,813 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:14,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:14,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1676240983, now seen corresponding path program 1 times [2023-12-16 06:00:14,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:14,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921377020] [2023-12-16 06:00:14,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:14,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-16 06:00:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-16 06:00:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-16 06:00:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-16 06:00:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-16 06:00:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-12-16 06:00:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-12-16 06:00:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-12-16 06:00:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:14,968 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-12-16 06:00:14,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:14,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921377020] [2023-12-16 06:00:14,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921377020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:14,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:14,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 06:00:14,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308097741] [2023-12-16 06:00:14,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:14,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 06:00:14,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:14,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 06:00:14,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:00:14,970 INFO L87 Difference]: Start difference. First operand 1353 states and 1740 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-16 06:00:15,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:15,352 INFO L93 Difference]: Finished difference Result 2883 states and 3939 transitions. [2023-12-16 06:00:15,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 06:00:15,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 291 [2023-12-16 06:00:15,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:15,358 INFO L225 Difference]: With dead ends: 2883 [2023-12-16 06:00:15,358 INFO L226 Difference]: Without dead ends: 1876 [2023-12-16 06:00:15,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:00:15,361 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 226 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:15,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 943 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 06:00:15,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2023-12-16 06:00:15,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1446. [2023-12-16 06:00:15,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1198 states have (on average 1.2921535893155258) internal successors, (1548), 1213 states have internal predecessors, (1548), 170 states have call successors, (170), 78 states have call predecessors, (170), 77 states have return successors, (169), 161 states have call predecessors, (169), 169 states have call successors, (169) [2023-12-16 06:00:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1887 transitions. [2023-12-16 06:00:15,472 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1887 transitions. Word has length 291 [2023-12-16 06:00:15,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:15,473 INFO L495 AbstractCegarLoop]: Abstraction has 1446 states and 1887 transitions. [2023-12-16 06:00:15,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-16 06:00:15,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1887 transitions. [2023-12-16 06:00:15,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-16 06:00:15,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:15,475 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:15,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-16 06:00:15,475 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:15,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:15,475 INFO L85 PathProgramCache]: Analyzing trace with hash 788311333, now seen corresponding path program 1 times [2023-12-16 06:00:15,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:15,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769971552] [2023-12-16 06:00:15,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:15,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-16 06:00:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-16 06:00:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-16 06:00:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-16 06:00:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-16 06:00:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-12-16 06:00:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-12-16 06:00:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-12-16 06:00:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2023-12-16 06:00:15,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:15,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769971552] [2023-12-16 06:00:15,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769971552] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:15,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842796127] [2023-12-16 06:00:15,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:15,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:15,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:15,761 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:15,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 06:00:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:15,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 06:00:15,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:16,048 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2023-12-16 06:00:16,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:16,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842796127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:16,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:16,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2023-12-16 06:00:16,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754215922] [2023-12-16 06:00:16,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:16,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:00:16,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:16,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:00:16,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2023-12-16 06:00:16,050 INFO L87 Difference]: Start difference. First operand 1446 states and 1887 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 06:00:16,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:16,432 INFO L93 Difference]: Finished difference Result 3308 states and 4439 transitions. [2023-12-16 06:00:16,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 06:00:16,432 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 291 [2023-12-16 06:00:16,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:16,440 INFO L225 Difference]: With dead ends: 3308 [2023-12-16 06:00:16,441 INFO L226 Difference]: Without dead ends: 2215 [2023-12-16 06:00:16,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-12-16 06:00:16,443 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 171 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:16,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 1948 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:00:16,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2023-12-16 06:00:16,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 1666. [2023-12-16 06:00:16,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1381 states have (on average 1.283128167994207) internal successors, (1772), 1398 states have internal predecessors, (1772), 197 states have call successors, (197), 88 states have call predecessors, (197), 87 states have return successors, (196), 186 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-16 06:00:16,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2165 transitions. [2023-12-16 06:00:16,551 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2165 transitions. Word has length 291 [2023-12-16 06:00:16,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:16,551 INFO L495 AbstractCegarLoop]: Abstraction has 1666 states and 2165 transitions. [2023-12-16 06:00:16,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 06:00:16,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2165 transitions. [2023-12-16 06:00:16,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-16 06:00:16,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:16,554 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:16,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:16,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-16 06:00:16,764 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:16,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:16,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1463644453, now seen corresponding path program 1 times [2023-12-16 06:00:16,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:16,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465704534] [2023-12-16 06:00:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:16,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-16 06:00:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-16 06:00:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-16 06:00:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-16 06:00:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-16 06:00:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-12-16 06:00:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-12-16 06:00:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-12-16 06:00:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 06:00:17,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:17,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465704534] [2023-12-16 06:00:17,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465704534] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:17,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251880114] [2023-12-16 06:00:17,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:17,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:17,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:17,057 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:17,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 06:00:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-16 06:00:17,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:17,360 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2023-12-16 06:00:17,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:17,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251880114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:17,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:17,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 17 [2023-12-16 06:00:17,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297377004] [2023-12-16 06:00:17,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:17,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 06:00:17,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:17,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 06:00:17,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-12-16 06:00:17,361 INFO L87 Difference]: Start difference. First operand 1666 states and 2165 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-16 06:00:18,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:18,102 INFO L93 Difference]: Finished difference Result 3586 states and 4756 transitions. [2023-12-16 06:00:18,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 06:00:18,103 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 291 [2023-12-16 06:00:18,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:18,111 INFO L225 Difference]: With dead ends: 3586 [2023-12-16 06:00:18,111 INFO L226 Difference]: Without dead ends: 2333 [2023-12-16 06:00:18,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2023-12-16 06:00:18,113 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 706 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:18,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 2890 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 06:00:18,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2023-12-16 06:00:18,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 1633. [2023-12-16 06:00:18,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1358 states have (on average 1.2768777614138438) internal successors, (1734), 1375 states have internal predecessors, (1734), 187 states have call successors, (187), 88 states have call predecessors, (187), 87 states have return successors, (186), 176 states have call predecessors, (186), 186 states have call successors, (186) [2023-12-16 06:00:18,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2107 transitions. [2023-12-16 06:00:18,217 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2107 transitions. Word has length 291 [2023-12-16 06:00:18,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:18,217 INFO L495 AbstractCegarLoop]: Abstraction has 1633 states and 2107 transitions. [2023-12-16 06:00:18,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-16 06:00:18,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2107 transitions. [2023-12-16 06:00:18,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-16 06:00:18,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:18,219 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:18,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-16 06:00:18,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-16 06:00:18,420 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:18,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:18,421 INFO L85 PathProgramCache]: Analyzing trace with hash -427842393, now seen corresponding path program 1 times [2023-12-16 06:00:18,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:18,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374678990] [2023-12-16 06:00:18,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:18,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-16 06:00:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-16 06:00:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-16 06:00:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-16 06:00:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-16 06:00:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-12-16 06:00:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-12-16 06:00:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-12-16 06:00:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,559 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-12-16 06:00:18,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:18,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374678990] [2023-12-16 06:00:18,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374678990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:18,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:18,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:00:18,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616937195] [2023-12-16 06:00:18,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:18,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:00:18,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:18,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:00:18,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:18,562 INFO L87 Difference]: Start difference. First operand 1633 states and 2107 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-16 06:00:19,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:19,089 INFO L93 Difference]: Finished difference Result 3178 states and 4147 transitions. [2023-12-16 06:00:19,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 06:00:19,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 291 [2023-12-16 06:00:19,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:19,097 INFO L225 Difference]: With dead ends: 3178 [2023-12-16 06:00:19,098 INFO L226 Difference]: Without dead ends: 1909 [2023-12-16 06:00:19,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:00:19,100 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 299 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:19,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 568 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 06:00:19,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2023-12-16 06:00:19,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1662. [2023-12-16 06:00:19,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1379 states have (on average 1.2799129804205946) internal successors, (1765), 1396 states have internal predecessors, (1765), 195 states have call successors, (195), 88 states have call predecessors, (195), 87 states have return successors, (194), 184 states have call predecessors, (194), 194 states have call successors, (194) [2023-12-16 06:00:19,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2154 transitions. [2023-12-16 06:00:19,261 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2154 transitions. Word has length 291 [2023-12-16 06:00:19,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:19,261 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2154 transitions. [2023-12-16 06:00:19,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-16 06:00:19,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2154 transitions. [2023-12-16 06:00:19,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2023-12-16 06:00:19,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:19,263 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:19,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-16 06:00:19,263 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:19,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:19,264 INFO L85 PathProgramCache]: Analyzing trace with hash 559736868, now seen corresponding path program 1 times [2023-12-16 06:00:19,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:19,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967519527] [2023-12-16 06:00:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:19,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-16 06:00:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-16 06:00:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-16 06:00:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-16 06:00:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-16 06:00:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-16 06:00:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 06:00:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2023-12-16 06:00:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-12-16 06:00:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked. [2023-12-16 06:00:19,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:19,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967519527] [2023-12-16 06:00:19,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967519527] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:19,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:19,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:00:19,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819589533] [2023-12-16 06:00:19,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:19,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:00:19,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:19,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:00:19,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:19,408 INFO L87 Difference]: Start difference. First operand 1662 states and 2154 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-16 06:00:19,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:19,966 INFO L93 Difference]: Finished difference Result 2979 states and 3893 transitions. [2023-12-16 06:00:19,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 06:00:19,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 299 [2023-12-16 06:00:19,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:19,972 INFO L225 Difference]: With dead ends: 2979 [2023-12-16 06:00:19,973 INFO L226 Difference]: Without dead ends: 1673 [2023-12-16 06:00:19,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:00:19,975 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 474 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:19,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 791 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 06:00:19,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2023-12-16 06:00:20,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1434. [2023-12-16 06:00:20,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1200 states have (on average 1.2608333333333333) internal successors, (1513), 1208 states have internal predecessors, (1513), 163 states have call successors, (163), 70 states have call predecessors, (163), 70 states have return successors, (163), 155 states have call predecessors, (163), 163 states have call successors, (163) [2023-12-16 06:00:20,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1839 transitions. [2023-12-16 06:00:20,074 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1839 transitions. Word has length 299 [2023-12-16 06:00:20,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:20,075 INFO L495 AbstractCegarLoop]: Abstraction has 1434 states and 1839 transitions. [2023-12-16 06:00:20,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-16 06:00:20,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1839 transitions. [2023-12-16 06:00:20,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-12-16 06:00:20,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:20,078 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:20,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-16 06:00:20,079 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:20,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:20,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1991120, now seen corresponding path program 1 times [2023-12-16 06:00:20,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:20,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719384355] [2023-12-16 06:00:20,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:20,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-16 06:00:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-16 06:00:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-16 06:00:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-16 06:00:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-16 06:00:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-16 06:00:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 06:00:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-16 06:00:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-12-16 06:00:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-12-16 06:00:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-12-16 06:00:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2023-12-16 06:00:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-12-16 06:00:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,586 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2023-12-16 06:00:20,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:20,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719384355] [2023-12-16 06:00:20,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719384355] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:20,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309180313] [2023-12-16 06:00:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:20,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:20,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:20,600 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:20,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 06:00:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:20,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-16 06:00:20,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 224 proven. 75 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2023-12-16 06:00:21,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:00:21,589 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 34 proven. 71 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-12-16 06:00:21,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309180313] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:00:21,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:00:21,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 28 [2023-12-16 06:00:21,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17334374] [2023-12-16 06:00:21,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:00:21,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-16 06:00:21,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:21,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-16 06:00:21,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2023-12-16 06:00:21,592 INFO L87 Difference]: Start difference. First operand 1434 states and 1839 transitions. Second operand has 28 states, 28 states have (on average 8.571428571428571) internal successors, (240), 24 states have internal predecessors, (240), 8 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 11 states have call predecessors, (51), 8 states have call successors, (51) [2023-12-16 06:00:33,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:33,034 INFO L93 Difference]: Finished difference Result 10629 states and 14471 transitions. [2023-12-16 06:00:33,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2023-12-16 06:00:33,035 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.571428571428571) internal successors, (240), 24 states have internal predecessors, (240), 8 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 11 states have call predecessors, (51), 8 states have call successors, (51) Word has length 339 [2023-12-16 06:00:33,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:33,063 INFO L225 Difference]: With dead ends: 10629 [2023-12-16 06:00:33,063 INFO L226 Difference]: Without dead ends: 9495 [2023-12-16 06:00:33,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 724 SyntacticMatches, 8 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16043 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=4891, Invalid=38999, Unknown=0, NotChecked=0, Total=43890 [2023-12-16 06:00:33,077 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 6666 mSDsluCounter, 6615 mSDsCounter, 0 mSdLazyCounter, 6208 mSolverCounterSat, 2089 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6666 SdHoareTripleChecker+Valid, 7156 SdHoareTripleChecker+Invalid, 8297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2089 IncrementalHoareTripleChecker+Valid, 6208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:33,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6666 Valid, 7156 Invalid, 8297 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2089 Valid, 6208 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-16 06:00:33,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9495 states. [2023-12-16 06:00:33,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9495 to 5945. [2023-12-16 06:00:33,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5945 states, 4697 states have (on average 1.2837981690440707) internal successors, (6030), 4751 states have internal predecessors, (6030), 891 states have call successors, (891), 332 states have call predecessors, (891), 356 states have return successors, (939), 861 states have call predecessors, (939), 891 states have call successors, (939) [2023-12-16 06:00:33,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5945 states to 5945 states and 7860 transitions. [2023-12-16 06:00:33,656 INFO L78 Accepts]: Start accepts. Automaton has 5945 states and 7860 transitions. Word has length 339 [2023-12-16 06:00:33,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:33,656 INFO L495 AbstractCegarLoop]: Abstraction has 5945 states and 7860 transitions. [2023-12-16 06:00:33,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.571428571428571) internal successors, (240), 24 states have internal predecessors, (240), 8 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 11 states have call predecessors, (51), 8 states have call successors, (51) [2023-12-16 06:00:33,657 INFO L276 IsEmpty]: Start isEmpty. Operand 5945 states and 7860 transitions. [2023-12-16 06:00:33,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-12-16 06:00:33,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:33,667 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:33,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:33,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-16 06:00:33,874 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:33,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:33,874 INFO L85 PathProgramCache]: Analyzing trace with hash -418385459, now seen corresponding path program 1 times [2023-12-16 06:00:33,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:33,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459399304] [2023-12-16 06:00:33,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:33,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:33,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:33,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:33,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:33,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:33,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:33,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:33,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:33,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:33,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-16 06:00:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-16 06:00:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-16 06:00:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-16 06:00:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-16 06:00:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-16 06:00:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 06:00:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-16 06:00:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-12-16 06:00:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-12-16 06:00:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-12-16 06:00:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2023-12-16 06:00:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-12-16 06:00:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2023-12-16 06:00:34,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:34,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459399304] [2023-12-16 06:00:34,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459399304] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:34,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940267437] [2023-12-16 06:00:34,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:34,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:34,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:34,066 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:34,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 06:00:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:34,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 06:00:34,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:34,399 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 711 trivial. 0 not checked. [2023-12-16 06:00:34,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:34,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940267437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:34,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:34,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2023-12-16 06:00:34,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349288505] [2023-12-16 06:00:34,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:34,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:00:34,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:34,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:00:34,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-16 06:00:34,401 INFO L87 Difference]: Start difference. First operand 5945 states and 7860 transitions. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-16 06:00:35,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:35,134 INFO L93 Difference]: Finished difference Result 12859 states and 17105 transitions. [2023-12-16 06:00:35,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 06:00:35,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 339 [2023-12-16 06:00:35,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:35,155 INFO L225 Difference]: With dead ends: 12859 [2023-12-16 06:00:35,155 INFO L226 Difference]: Without dead ends: 7399 [2023-12-16 06:00:35,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-12-16 06:00:35,165 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 164 mSDsluCounter, 1927 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:35,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2330 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:00:35,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2023-12-16 06:00:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 4218. [2023-12-16 06:00:35,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4218 states, 3381 states have (on average 1.259094942324756) internal successors, (4257), 3429 states have internal predecessors, (4257), 570 states have call successors, (570), 245 states have call predecessors, (570), 266 states have return successors, (600), 543 states have call predecessors, (600), 570 states have call successors, (600) [2023-12-16 06:00:35,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4218 states to 4218 states and 5427 transitions. [2023-12-16 06:00:35,505 INFO L78 Accepts]: Start accepts. Automaton has 4218 states and 5427 transitions. Word has length 339 [2023-12-16 06:00:35,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:35,506 INFO L495 AbstractCegarLoop]: Abstraction has 4218 states and 5427 transitions. [2023-12-16 06:00:35,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-16 06:00:35,506 INFO L276 IsEmpty]: Start isEmpty. Operand 4218 states and 5427 transitions. [2023-12-16 06:00:35,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-12-16 06:00:35,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:35,513 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:35,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:35,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:35,720 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:35,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:35,720 INFO L85 PathProgramCache]: Analyzing trace with hash 158160815, now seen corresponding path program 1 times [2023-12-16 06:00:35,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:35,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350419610] [2023-12-16 06:00:35,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:35,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-16 06:00:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-16 06:00:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 06:00:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-12-16 06:00:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-16 06:00:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-12-16 06:00:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-16 06:00:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-12-16 06:00:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2023-12-16 06:00:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2023-12-16 06:00:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-12-16 06:00:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2023-12-16 06:00:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-12-16 06:00:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2023-12-16 06:00:36,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:36,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350419610] [2023-12-16 06:00:36,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350419610] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:36,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237846509] [2023-12-16 06:00:36,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:36,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:36,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:36,533 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:36,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 06:00:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:36,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-16 06:00:36,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 190 proven. 102 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-12-16 06:00:37,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:00:37,499 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 33 proven. 69 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-12-16 06:00:37,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237846509] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:00:37,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:00:37,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 30 [2023-12-16 06:00:37,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432333766] [2023-12-16 06:00:37,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:00:37,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-16 06:00:37,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:37,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-16 06:00:37,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2023-12-16 06:00:37,501 INFO L87 Difference]: Start difference. First operand 4218 states and 5427 transitions. Second operand has 30 states, 30 states have (on average 8.166666666666666) internal successors, (245), 26 states have internal predecessors, (245), 9 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 12 states have call predecessors, (54), 9 states have call successors, (54) Received shutdown request... [2023-12-16 06:00:55,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 277 states. [2023-12-16 06:00:55,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1050 GetRequests, 745 SyntacticMatches, 1 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37723 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=8621, Invalid=84099, Unknown=0, NotChecked=0, Total=92720 [2023-12-16 06:00:55,410 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 3594 mSDsluCounter, 6694 mSDsCounter, 0 mSdLazyCounter, 8992 mSolverCounterSat, 971 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3594 SdHoareTripleChecker+Valid, 7204 SdHoareTripleChecker+Invalid, 9963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 971 IncrementalHoareTripleChecker+Valid, 8992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:55,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3594 Valid, 7204 Invalid, 9963 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [971 Valid, 8992 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-16 06:00:55,417 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:00:55,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-16 06:00:55,427 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:00:55,427 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:00:55,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:55,628 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (4218states) and FLOYD_HOARE automaton (currently 277 states, 30 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 305 known predicates. [2023-12-16 06:00:55,632 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:55,634 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:00:55,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:00:55 BoogieIcfgContainer [2023-12-16 06:00:55,640 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:00:55,641 INFO L158 Benchmark]: Toolchain (without parser) took 58390.46ms. Allocated memory was 261.1MB in the beginning and 1.1GB in the end (delta: 800.1MB). Free memory was 209.0MB in the beginning and 705.0MB in the end (delta: -496.0MB). Peak memory consumption was 304.3MB. Max. memory is 8.0GB. [2023-12-16 06:00:55,641 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 199.2MB. Free memory is still 150.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:00:55,643 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.12ms. Allocated memory is still 261.1MB. Free memory was 208.7MB in the beginning and 192.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-16 06:00:55,643 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.31ms. Allocated memory is still 261.1MB. Free memory was 192.0MB in the beginning and 189.1MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 06:00:55,643 INFO L158 Benchmark]: Boogie Preprocessor took 64.04ms. Allocated memory is still 261.1MB. Free memory was 189.1MB in the beginning and 185.4MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 06:00:55,643 INFO L158 Benchmark]: RCFGBuilder took 546.46ms. Allocated memory is still 261.1MB. Free memory was 185.1MB in the beginning and 203.3MB in the end (delta: -18.1MB). Peak memory consumption was 14.9MB. Max. memory is 8.0GB. [2023-12-16 06:00:55,643 INFO L158 Benchmark]: TraceAbstraction took 57429.38ms. Allocated memory was 261.1MB in the beginning and 1.1GB in the end (delta: 800.1MB). Free memory was 202.7MB in the beginning and 705.0MB in the end (delta: -502.2MB). Peak memory consumption was 297.8MB. Max. memory is 8.0GB. [2023-12-16 06:00:55,643 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 199.2MB. Free memory is still 150.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 280.12ms. Allocated memory is still 261.1MB. Free memory was 208.7MB in the beginning and 192.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 66.31ms. Allocated memory is still 261.1MB. Free memory was 192.0MB in the beginning and 189.1MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 64.04ms. Allocated memory is still 261.1MB. Free memory was 189.1MB in the beginning and 185.4MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 546.46ms. Allocated memory is still 261.1MB. Free memory was 185.1MB in the beginning and 203.3MB in the end (delta: -18.1MB). Peak memory consumption was 14.9MB. Max. memory is 8.0GB. * TraceAbstraction took 57429.38ms. Allocated memory was 261.1MB in the beginning and 1.1GB in the end (delta: 800.1MB). Free memory was 202.7MB in the beginning and 705.0MB in the end (delta: -502.2MB). Peak memory consumption was 297.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 539]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 539). Cancelled while NwaCegarLoop was constructing difference of abstraction (4218states) and FLOYD_HOARE automaton (currently 277 states, 30 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 305 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 172 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.4s, OverallIterations: 41, TraceHistogramMax: 12, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 38.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15589 SdHoareTripleChecker+Valid, 14.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15267 mSDsluCounter, 51768 SdHoareTripleChecker+Invalid, 11.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40626 mSDsCounter, 3878 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23232 IncrementalHoareTripleChecker+Invalid, 27110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3878 mSolverCounterUnsat, 11142 mSDtfsCounter, 23232 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7174 GetRequests, 6382 SyntacticMatches, 15 SemanticMatches, 776 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54301 ImplicationChecksByTransitivity, 20.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5945occurred in iteration=39, InterpolantAutomatonStates: 448, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 40 MinimizatonAttempts, 10662 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 11871 NumberOfCodeBlocks, 11871 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 12974 ConstructedInterpolants, 0 QuantifiedInterpolants, 21568 SizeOfPredicates, 40 NumberOfNonLiveVariables, 12884 ConjunctsInSsa, 194 ConjunctsInUnsatCore, 61 InterpolantComputations, 37 PerfectInterpolantSequences, 31638/32291 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown