/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 19:41:01,851 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 19:41:01,906 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 19:41:01,911 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 19:41:01,911 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 19:41:01,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 19:41:01,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 19:41:01,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 19:41:01,934 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 19:41:01,937 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 19:41:01,937 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 19:41:01,938 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 19:41:01,938 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 19:41:01,939 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 19:41:01,939 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 19:41:01,939 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 19:41:01,939 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 19:41:01,940 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 19:41:01,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 19:41:01,940 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 19:41:01,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 19:41:01,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 19:41:01,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 19:41:01,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 19:41:01,942 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 19:41:01,942 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 19:41:01,942 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 19:41:01,942 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 19:41:01,942 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 19:41:01,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 19:41:01,943 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 19:41:01,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 19:41:01,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 19:41:01,944 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 19:41:01,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 19:41:01,944 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 19:41:01,944 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 19:41:01,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 19:41:01,944 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 19:41:01,944 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 19:41:01,944 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 19:41:01,945 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 19:41:01,945 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 19:41:01,945 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 19:41:02,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 19:41:02,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 19:41:02,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 19:41:02,151 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 19:41:02,151 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 19:41:02,152 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m5.c [2023-12-18 19:41:03,127 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 19:41:03,261 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 19:41:03,263 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const_m5.c [2023-12-18 19:41:03,270 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c51026074/321450e928f646488606f6b54a6f9795/FLAGa775ef5a7 [2023-12-18 19:41:03,284 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c51026074/321450e928f646488606f6b54a6f9795 [2023-12-18 19:41:03,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 19:41:03,287 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 19:41:03,289 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 19:41:03,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 19:41:03,293 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 19:41:03,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:41:03" (1/1) ... [2023-12-18 19:41:03,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c6156c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:41:03, skipping insertion in model container [2023-12-18 19:41:03,294 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:41:03" (1/1) ... [2023-12-18 19:41:03,312 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 19:41:03,424 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const_m5.c[408,421] [2023-12-18 19:41:03,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 19:41:03,467 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 19:41:03,477 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const_m5.c[408,421] [2023-12-18 19:41:03,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 19:41:03,495 INFO L206 MainTranslator]: Completed translation [2023-12-18 19:41:03,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:41:03 WrapperNode [2023-12-18 19:41:03,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 19:41:03,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 19:41:03,497 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 19:41:03,497 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 19:41:03,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:41:03" (1/1) ... [2023-12-18 19:41:03,506 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:41:03" (1/1) ... [2023-12-18 19:41:03,519 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 149 [2023-12-18 19:41:03,519 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 19:41:03,520 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 19:41:03,520 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 19:41:03,520 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 19:41:03,533 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:41:03" (1/1) ... [2023-12-18 19:41:03,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:41:03" (1/1) ... [2023-12-18 19:41:03,535 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:41:03" (1/1) ... [2023-12-18 19:41:03,543 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-18 19:41:03,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:41:03" (1/1) ... [2023-12-18 19:41:03,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:41:03" (1/1) ... [2023-12-18 19:41:03,547 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:41:03" (1/1) ... [2023-12-18 19:41:03,551 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:41:03" (1/1) ... [2023-12-18 19:41:03,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:41:03" (1/1) ... [2023-12-18 19:41:03,552 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:41:03" (1/1) ... [2023-12-18 19:41:03,554 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 19:41:03,554 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 19:41:03,555 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 19:41:03,555 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 19:41:03,555 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:41:03" (1/1) ... [2023-12-18 19:41:03,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 19:41:03,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:03,583 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) [2023-12-18 19:41:03,590 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 [2023-12-18 19:41:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 19:41:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 19:41:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-18 19:41:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-18 19:41:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-18 19:41:03,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-18 19:41:03,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 19:41:03,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 19:41:03,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-18 19:41:03,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-18 19:41:03,654 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 19:41:03,656 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 19:41:03,793 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 19:41:03,844 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 19:41:03,845 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-12-18 19:41:03,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:41:03 BoogieIcfgContainer [2023-12-18 19:41:03,845 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 19:41:03,847 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 19:41:03,847 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 19:41:03,853 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 19:41:03,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 07:41:03" (1/3) ... [2023-12-18 19:41:03,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594bc839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:41:03, skipping insertion in model container [2023-12-18 19:41:03,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:41:03" (2/3) ... [2023-12-18 19:41:03,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594bc839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:41:03, skipping insertion in model container [2023-12-18 19:41:03,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:41:03" (3/3) ... [2023-12-18 19:41:03,855 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m5.c [2023-12-18 19:41:03,866 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 19:41:03,866 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-18 19:41:03,914 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 19:41:03,938 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;@251b00fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 19:41:03,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-18 19:41:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:03,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-18 19:41:03,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:03,946 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] [2023-12-18 19:41:03,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:03,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:03,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1439288402, now seen corresponding path program 1 times [2023-12-18 19:41:03,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:03,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593129317] [2023-12-18 19:41:03,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:03,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:41:04,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593129317] [2023-12-18 19:41:04,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593129317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 19:41:04,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 19:41:04,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 19:41:04,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095843849] [2023-12-18 19:41:04,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 19:41:04,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-18 19:41:04,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:04,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-18 19:41:04,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 19:41:04,152 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:04,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:04,209 INFO L93 Difference]: Finished difference Result 57 states and 100 transitions. [2023-12-18 19:41:04,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 19:41:04,211 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-18 19:41:04,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:04,216 INFO L225 Difference]: With dead ends: 57 [2023-12-18 19:41:04,216 INFO L226 Difference]: Without dead ends: 27 [2023-12-18 19:41:04,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 19:41:04,222 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:04,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 19:41:04,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-18 19:41:04,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-12-18 19:41:04,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:04,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2023-12-18 19:41:04,250 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 26 [2023-12-18 19:41:04,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:04,250 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2023-12-18 19:41:04,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:04,251 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2023-12-18 19:41:04,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-18 19:41:04,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:04,251 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] [2023-12-18 19:41:04,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 19:41:04,252 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:04,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:04,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1795376710, now seen corresponding path program 1 times [2023-12-18 19:41:04,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:04,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277919688] [2023-12-18 19:41:04,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:04,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:04,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:41:04,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:04,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277919688] [2023-12-18 19:41:04,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277919688] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 19:41:04,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 19:41:04,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 19:41:04,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191959545] [2023-12-18 19:41:04,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 19:41:04,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 19:41:04,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:04,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 19:41:04,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 19:41:04,385 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:04,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:04,448 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2023-12-18 19:41:04,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 19:41:04,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-18 19:41:04,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:04,450 INFO L225 Difference]: With dead ends: 52 [2023-12-18 19:41:04,450 INFO L226 Difference]: Without dead ends: 28 [2023-12-18 19:41:04,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 19:41:04,458 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:04,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 19:41:04,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-18 19:41:04,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-18 19:41:04,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2023-12-18 19:41:04,467 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 26 [2023-12-18 19:41:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:04,468 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2023-12-18 19:41:04,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2023-12-18 19:41:04,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-18 19:41:04,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:04,469 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] [2023-12-18 19:41:04,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 19:41:04,469 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:04,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:04,471 INFO L85 PathProgramCache]: Analyzing trace with hash -146231318, now seen corresponding path program 1 times [2023-12-18 19:41:04,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:04,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835603430] [2023-12-18 19:41:04,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:04,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:04,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-18 19:41:04,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:04,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835603430] [2023-12-18 19:41:04,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835603430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 19:41:04,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 19:41:04,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 19:41:04,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497813021] [2023-12-18 19:41:04,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 19:41:04,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 19:41:04,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:04,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 19:41:04,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 19:41:04,560 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:04,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:04,633 INFO L93 Difference]: Finished difference Result 60 states and 88 transitions. [2023-12-18 19:41:04,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 19:41:04,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-18 19:41:04,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:04,634 INFO L225 Difference]: With dead ends: 60 [2023-12-18 19:41:04,634 INFO L226 Difference]: Without dead ends: 38 [2023-12-18 19:41:04,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 19:41:04,635 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 33 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:04,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 17 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 19:41:04,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-18 19:41:04,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-12-18 19:41:04,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:04,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2023-12-18 19:41:04,640 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 27 [2023-12-18 19:41:04,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:04,640 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2023-12-18 19:41:04,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:04,640 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2023-12-18 19:41:04,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-18 19:41:04,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:04,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:41:04,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 19:41:04,641 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:04,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:04,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1466683388, now seen corresponding path program 1 times [2023-12-18 19:41:04,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:04,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805673458] [2023-12-18 19:41:04,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:04,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-18 19:41:04,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:04,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805673458] [2023-12-18 19:41:04,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805673458] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:41:04,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400471607] [2023-12-18 19:41:04,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:04,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:04,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:04,733 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) [2023-12-18 19:41:04,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 19:41:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:04,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-18 19:41:04,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:41:04,880 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-18 19:41:04,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:41:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-18 19:41:04,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400471607] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:41:04,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:41:04,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-12-18 19:41:04,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234588792] [2023-12-18 19:41:04,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:41:04,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 19:41:04,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:04,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 19:41:04,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-12-18 19:41:04,916 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:04,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:04,987 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2023-12-18 19:41:04,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 19:41:04,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-18 19:41:04,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:04,988 INFO L225 Difference]: With dead ends: 73 [2023-12-18 19:41:04,988 INFO L226 Difference]: Without dead ends: 39 [2023-12-18 19:41:04,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-12-18 19:41:04,995 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:04,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 19:41:04,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-18 19:41:05,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-18 19:41:05,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:05,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2023-12-18 19:41:05,007 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 37 [2023-12-18 19:41:05,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:05,007 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2023-12-18 19:41:05,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:05,007 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2023-12-18 19:41:05,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-18 19:41:05,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:05,010 INFO L195 NwaCegarLoop]: trace 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] [2023-12-18 19:41:05,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-18 19:41:05,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:05,214 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:05,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:05,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1465337896, now seen corresponding path program 2 times [2023-12-18 19:41:05,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:05,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267238135] [2023-12-18 19:41:05,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:05,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 19:41:05,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:05,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267238135] [2023-12-18 19:41:05,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267238135] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:41:05,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374484596] [2023-12-18 19:41:05,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 19:41:05,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:05,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:05,302 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) [2023-12-18 19:41:05,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 19:41:05,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 19:41:05,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:41:05,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-18 19:41:05,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:41:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 19:41:05,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:41:05,473 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 19:41:05,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374484596] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:41:05,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:41:05,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-12-18 19:41:05,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346056756] [2023-12-18 19:41:05,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:41:05,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-18 19:41:05,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:05,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-18 19:41:05,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-18 19:41:05,476 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:05,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:05,563 INFO L93 Difference]: Finished difference Result 80 states and 108 transitions. [2023-12-18 19:41:05,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 19:41:05,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-18 19:41:05,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:05,564 INFO L225 Difference]: With dead ends: 80 [2023-12-18 19:41:05,564 INFO L226 Difference]: Without dead ends: 49 [2023-12-18 19:41:05,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-18 19:41:05,565 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:05,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 19:41:05,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-18 19:41:05,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-18 19:41:05,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 48 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:05,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2023-12-18 19:41:05,574 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 38 [2023-12-18 19:41:05,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:05,575 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2023-12-18 19:41:05,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:05,575 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2023-12-18 19:41:05,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-18 19:41:05,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:05,577 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 19:41:05,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-18 19:41:05,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:05,785 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:05,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:05,785 INFO L85 PathProgramCache]: Analyzing trace with hash -937808826, now seen corresponding path program 3 times [2023-12-18 19:41:05,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:05,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153076603] [2023-12-18 19:41:05,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:05,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:08,665 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:41:08,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:08,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153076603] [2023-12-18 19:41:08,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153076603] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:41:08,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357980257] [2023-12-18 19:41:08,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 19:41:08,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:08,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:08,667 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) [2023-12-18 19:41:08,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 19:41:08,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-18 19:41:08,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:41:08,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-18 19:41:08,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:41:08,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-18 19:41:09,350 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:41:09,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:41:10,449 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-18 19:41:10,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357980257] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:41:10,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:41:10,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 29] total 64 [2023-12-18 19:41:10,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967002902] [2023-12-18 19:41:10,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:41:10,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-18 19:41:10,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:10,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-18 19:41:10,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3844, Unknown=0, NotChecked=0, Total=4032 [2023-12-18 19:41:10,453 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 64 states, 64 states have (on average 1.75) internal successors, (112), 64 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:11,371 INFO L93 Difference]: Finished difference Result 90 states and 109 transitions. [2023-12-18 19:41:11,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-18 19:41:11,372 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.75) internal successors, (112), 64 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-12-18 19:41:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:11,373 INFO L225 Difference]: With dead ends: 90 [2023-12-18 19:41:11,373 INFO L226 Difference]: Without dead ends: 86 [2023-12-18 19:41:11,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=194, Invalid=3966, Unknown=0, NotChecked=0, Total=4160 [2023-12-18 19:41:11,374 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 1997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:11,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 285 Invalid, 1997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 19:41:11,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-18 19:41:11,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2023-12-18 19:41:11,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 83 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:11,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 103 transitions. [2023-12-18 19:41:11,382 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 103 transitions. Word has length 48 [2023-12-18 19:41:11,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:11,382 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 103 transitions. [2023-12-18 19:41:11,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.75) internal successors, (112), 64 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:11,382 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 103 transitions. [2023-12-18 19:41:11,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-18 19:41:11,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:11,383 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-18 19:41:11,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 19:41:11,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:11,589 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:11,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:11,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1905736107, now seen corresponding path program 4 times [2023-12-18 19:41:11,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:11,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266005888] [2023-12-18 19:41:11,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:11,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-18 19:41:11,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:11,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266005888] [2023-12-18 19:41:11,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266005888] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:41:11,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564054106] [2023-12-18 19:41:11,666 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 19:41:11,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:11,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:11,667 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) [2023-12-18 19:41:11,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 19:41:11,717 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 19:41:11,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:41:11,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-18 19:41:11,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:41:11,777 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-18 19:41:11,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:41:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-18 19:41:11,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564054106] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:41:11,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:41:11,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-12-18 19:41:11,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254922782] [2023-12-18 19:41:11,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:41:11,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-18 19:41:11,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:11,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-18 19:41:11,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-12-18 19:41:11,840 INFO L87 Difference]: Start difference. First operand 84 states and 103 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:12,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:12,323 INFO L93 Difference]: Finished difference Result 175 states and 222 transitions. [2023-12-18 19:41:12,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-18 19:41:12,323 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-18 19:41:12,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:12,324 INFO L225 Difference]: With dead ends: 175 [2023-12-18 19:41:12,324 INFO L226 Difference]: Without dead ends: 60 [2023-12-18 19:41:12,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 87 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2023-12-18 19:41:12,325 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 164 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:12,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 65 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 19:41:12,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-18 19:41:12,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-12-18 19:41:12,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:12,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2023-12-18 19:41:12,330 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 49 [2023-12-18 19:41:12,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:12,330 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2023-12-18 19:41:12,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:12,330 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2023-12-18 19:41:12,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-18 19:41:12,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:12,331 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 19:41:12,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-18 19:41:12,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:12,531 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:12,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:12,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1240289028, now seen corresponding path program 5 times [2023-12-18 19:41:12,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:12,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873892026] [2023-12-18 19:41:12,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:12,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:17,495 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:41:17,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:17,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873892026] [2023-12-18 19:41:17,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873892026] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:41:17,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346069554] [2023-12-18 19:41:17,495 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 19:41:17,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:17,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:17,496 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) [2023-12-18 19:41:17,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 19:41:17,603 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-18 19:41:17,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:41:17,605 WARN L260 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 136 conjunts are in the unsatisfiable core [2023-12-18 19:41:17,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:41:19,600 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-18 19:41:19,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:41:22,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:41:22,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 52 treesize of output 89 [2023-12-18 19:41:22,769 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-18 19:41:22,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346069554] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:41:22,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:41:22,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 37, 39] total 117 [2023-12-18 19:41:22,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562679284] [2023-12-18 19:41:22,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:41:22,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2023-12-18 19:41:22,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:22,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2023-12-18 19:41:22,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=13185, Unknown=0, NotChecked=0, Total=13572 [2023-12-18 19:41:22,776 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 117 states, 117 states have (on average 1.4102564102564104) internal successors, (165), 117 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:35,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:35,128 INFO L93 Difference]: Finished difference Result 274 states and 328 transitions. [2023-12-18 19:41:35,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-18 19:41:35,129 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 1.4102564102564104) internal successors, (165), 117 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-18 19:41:35,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:35,131 INFO L225 Difference]: With dead ends: 274 [2023-12-18 19:41:35,131 INFO L226 Difference]: Without dead ends: 222 [2023-12-18 19:41:35,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8168 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=1808, Invalid=38392, Unknown=0, NotChecked=0, Total=40200 [2023-12-18 19:41:35,138 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 271 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 9915 mSolverCounterSat, 780 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 10695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 780 IncrementalHoareTripleChecker+Valid, 9915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:35,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 661 Invalid, 10695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [780 Valid, 9915 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-18 19:41:35,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-12-18 19:41:35,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 126. [2023-12-18 19:41:35,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.192) internal successors, (149), 125 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:35,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 149 transitions. [2023-12-18 19:41:35,156 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 149 transitions. Word has length 59 [2023-12-18 19:41:35,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:35,156 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 149 transitions. [2023-12-18 19:41:35,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 1.4102564102564104) internal successors, (165), 117 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:35,156 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 149 transitions. [2023-12-18 19:41:35,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-18 19:41:35,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:35,157 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-12-18 19:41:35,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-18 19:41:35,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:35,364 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:35,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:35,364 INFO L85 PathProgramCache]: Analyzing trace with hash -990766119, now seen corresponding path program 6 times [2023-12-18 19:41:35,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:35,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045124335] [2023-12-18 19:41:35,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:35,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:35,470 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-18 19:41:35,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:35,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045124335] [2023-12-18 19:41:35,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045124335] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:41:35,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801381042] [2023-12-18 19:41:35,471 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 19:41:35,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:35,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:35,476 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) [2023-12-18 19:41:35,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 19:41:35,563 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-18 19:41:35,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:41:35,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-18 19:41:35,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:41:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-18 19:41:35,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:41:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-18 19:41:35,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801381042] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:41:35,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:41:35,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2023-12-18 19:41:35,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776250282] [2023-12-18 19:41:35,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:41:35,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-18 19:41:35,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:35,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-18 19:41:35,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2023-12-18 19:41:35,814 INFO L87 Difference]: Start difference. First operand 126 states and 149 transitions. Second operand has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:36,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:36,280 INFO L93 Difference]: Finished difference Result 188 states and 229 transitions. [2023-12-18 19:41:36,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-18 19:41:36,281 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-18 19:41:36,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:36,282 INFO L225 Difference]: With dead ends: 188 [2023-12-18 19:41:36,282 INFO L226 Difference]: Without dead ends: 71 [2023-12-18 19:41:36,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 111 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=240, Invalid=1092, Unknown=0, NotChecked=0, Total=1332 [2023-12-18 19:41:36,283 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 140 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:36,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 59 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 19:41:36,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-18 19:41:36,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-12-18 19:41:36,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.1571428571428573) internal successors, (81), 70 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:36,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2023-12-18 19:41:36,296 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 60 [2023-12-18 19:41:36,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:36,296 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2023-12-18 19:41:36,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:36,297 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2023-12-18 19:41:36,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-18 19:41:36,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:36,297 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:41:36,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-18 19:41:36,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:36,505 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:36,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:36,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1063443898, now seen corresponding path program 7 times [2023-12-18 19:41:36,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:36,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968612615] [2023-12-18 19:41:36,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:36,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:42,277 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:41:42,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:42,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968612615] [2023-12-18 19:41:42,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968612615] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:41:42,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118654828] [2023-12-18 19:41:42,278 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 19:41:42,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:42,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:42,332 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) [2023-12-18 19:41:42,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 19:41:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:42,405 WARN L260 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 180 conjunts are in the unsatisfiable core [2023-12-18 19:41:42,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:41:42,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-18 19:41:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:41:46,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:41:51,846 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-18 19:41:51,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118654828] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:41:51,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:41:51,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 50, 49] total 151 [2023-12-18 19:41:51,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487084416] [2023-12-18 19:41:51,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:41:51,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2023-12-18 19:41:51,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:51,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2023-12-18 19:41:51,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=22183, Unknown=0, NotChecked=0, Total=22650 [2023-12-18 19:41:51,854 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 151 states, 151 states have (on average 1.304635761589404) internal successors, (197), 151 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:42:06,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:42:06,755 INFO L93 Difference]: Finished difference Result 248 states and 292 transitions. [2023-12-18 19:42:06,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-18 19:42:06,756 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 1.304635761589404) internal successors, (197), 151 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-18 19:42:06,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:42:06,757 INFO L225 Difference]: With dead ends: 248 [2023-12-18 19:42:06,757 INFO L226 Difference]: Without dead ends: 187 [2023-12-18 19:42:06,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8442 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=1526, Invalid=47536, Unknown=0, NotChecked=0, Total=49062 [2023-12-18 19:42:06,759 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 558 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 12968 mSolverCounterSat, 1159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 14127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1159 IncrementalHoareTripleChecker+Valid, 12968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-18 19:42:06,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 602 Invalid, 14127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1159 Valid, 12968 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-18 19:42:06,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-12-18 19:42:06,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 147. [2023-12-18 19:42:06,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.1575342465753424) internal successors, (169), 146 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:42:06,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 169 transitions. [2023-12-18 19:42:06,783 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 169 transitions. Word has length 70 [2023-12-18 19:42:06,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:42:06,783 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 169 transitions. [2023-12-18 19:42:06,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 151 states have (on average 1.304635761589404) internal successors, (197), 151 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:42:06,784 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 169 transitions. [2023-12-18 19:42:06,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-18 19:42:06,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:42:06,785 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:42:06,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-18 19:42:06,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:42:06,996 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:42:06,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:42:06,996 INFO L85 PathProgramCache]: Analyzing trace with hash -821465836, now seen corresponding path program 8 times [2023-12-18 19:42:06,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:42:06,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854139055] [2023-12-18 19:42:06,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:42:06,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:42:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:42:07,144 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-18 19:42:07,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:42:07,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854139055] [2023-12-18 19:42:07,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854139055] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:42:07,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711525131] [2023-12-18 19:42:07,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 19:42:07,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:42:07,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:42:07,145 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) [2023-12-18 19:42:07,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-18 19:42:07,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 19:42:07,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:42:07,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-18 19:42:07,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:42:07,333 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-18 19:42:07,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:42:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-18 19:42:07,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711525131] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:42:07,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:42:07,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2023-12-18 19:42:07,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618857163] [2023-12-18 19:42:07,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:42:07,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-18 19:42:07,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:42:07,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-18 19:42:07,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2023-12-18 19:42:07,418 INFO L87 Difference]: Start difference. First operand 147 states and 169 transitions. Second operand has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:42:07,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:42:07,755 INFO L93 Difference]: Finished difference Result 276 states and 319 transitions. [2023-12-18 19:42:07,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 19:42:07,756 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-18 19:42:07,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:42:07,756 INFO L225 Difference]: With dead ends: 276 [2023-12-18 19:42:07,756 INFO L226 Difference]: Without dead ends: 86 [2023-12-18 19:42:07,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 126 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2023-12-18 19:42:07,764 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 62 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 19:42:07,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 42 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 19:42:07,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-18 19:42:07,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 81. [2023-12-18 19:42:07,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.1375) internal successors, (91), 80 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:42:07,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2023-12-18 19:42:07,776 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 71 [2023-12-18 19:42:07,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:42:07,776 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2023-12-18 19:42:07,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:42:07,777 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2023-12-18 19:42:07,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-18 19:42:07,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:42:07,777 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:42:07,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-18 19:42:07,981 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,SelfDestructingSolverStorable10 [2023-12-18 19:42:07,981 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:42:07,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:42:07,982 INFO L85 PathProgramCache]: Analyzing trace with hash 198891414, now seen corresponding path program 9 times [2023-12-18 19:42:07,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:42:07,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910423403] [2023-12-18 19:42:07,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:42:07,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:42:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:42:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-12-18 19:42:08,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:42:08,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910423403] [2023-12-18 19:42:08,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910423403] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:42:08,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090081193] [2023-12-18 19:42:08,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 19:42:08,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:42:08,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:42:08,122 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) [2023-12-18 19:42:08,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-18 19:42:08,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-18 19:42:08,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:42:08,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-18 19:42:08,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:42:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-12-18 19:42:08,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:42:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-12-18 19:42:08,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090081193] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:42:08,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:42:08,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2023-12-18 19:42:08,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589958862] [2023-12-18 19:42:08,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:42:08,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-18 19:42:08,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:42:08,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-18 19:42:08,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2023-12-18 19:42:08,400 INFO L87 Difference]: Start difference. First operand 81 states and 91 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:42:08,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:42:08,626 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2023-12-18 19:42:08,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-18 19:42:08,626 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-18 19:42:08,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:42:08,627 INFO L225 Difference]: With dead ends: 86 [2023-12-18 19:42:08,627 INFO L226 Difference]: Without dead ends: 82 [2023-12-18 19:42:08,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 148 SyntacticMatches, 10 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2023-12-18 19:42:08,627 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 34 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 19:42:08,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 20 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 19:42:08,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-18 19:42:08,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-12-18 19:42:08,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 81 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:42:08,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2023-12-18 19:42:08,640 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 80 [2023-12-18 19:42:08,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:42:08,640 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2023-12-18 19:42:08,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:42:08,640 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2023-12-18 19:42:08,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-18 19:42:08,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:42:08,641 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:42:08,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-18 19:42:08,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:42:08,844 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:42:08,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:42:08,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1906442748, now seen corresponding path program 10 times [2023-12-18 19:42:08,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:42:08,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882848950] [2023-12-18 19:42:08,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:42:08,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:42:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:42:16,720 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 2 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:42:16,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:42:16,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882848950] [2023-12-18 19:42:16,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882848950] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:42:16,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777707786] [2023-12-18 19:42:16,721 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 19:42:16,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:42:16,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:42:16,722 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) [2023-12-18 19:42:16,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-18 19:42:16,810 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 19:42:16,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:42:16,814 WARN L260 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 222 conjunts are in the unsatisfiable core [2023-12-18 19:42:16,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:42:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 5 proven. 150 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-18 19:42:21,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:42:27,961 INFO L349 Elim1Store]: treesize reduction 60, result has 77.5 percent of original size [2023-12-18 19:42:27,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 86 treesize of output 221 [2023-12-18 19:42:29,684 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-18 19:42:29,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777707786] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:42:29,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:42:29,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 58, 65] total 187 [2023-12-18 19:42:29,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820177746] [2023-12-18 19:42:29,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:42:29,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 187 states [2023-12-18 19:42:29,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:42:29,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2023-12-18 19:42:29,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1110, Invalid=33672, Unknown=0, NotChecked=0, Total=34782 [2023-12-18 19:42:29,687 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand has 187 states, 187 states have (on average 1.2406417112299466) internal successors, (232), 187 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:42:58,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:42:58,951 INFO L93 Difference]: Finished difference Result 318 states and 365 transitions. [2023-12-18 19:42:58,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2023-12-18 19:42:58,951 INFO L78 Accepts]: Start accepts. Automaton has has 187 states, 187 states have (on average 1.2406417112299466) internal successors, (232), 187 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-12-18 19:42:58,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:42:58,952 INFO L225 Difference]: With dead ends: 318 [2023-12-18 19:42:58,952 INFO L226 Difference]: Without dead ends: 248 [2023-12-18 19:42:58,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31518 ImplicationChecksByTransitivity, 35.7s TimeCoverageRelationStatistics Valid=4691, Invalid=105865, Unknown=0, NotChecked=0, Total=110556 [2023-12-18 19:42:58,957 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 472 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 13229 mSolverCounterSat, 2004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 15233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2004 IncrementalHoareTripleChecker+Valid, 13229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-18 19:42:58,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 504 Invalid, 15233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2004 Valid, 13229 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-18 19:42:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-12-18 19:42:59,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 183. [2023-12-18 19:42:59,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.1373626373626373) internal successors, (207), 182 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:42:59,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 207 transitions. [2023-12-18 19:42:59,028 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 207 transitions. Word has length 81 [2023-12-18 19:42:59,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:42:59,028 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 207 transitions. [2023-12-18 19:42:59,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 187 states, 187 states have (on average 1.2406417112299466) internal successors, (232), 187 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:42:59,028 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 207 transitions. [2023-12-18 19:42:59,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-18 19:42:59,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:42:59,029 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:42:59,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-18 19:42:59,234 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,SelfDestructingSolverStorable12 [2023-12-18 19:42:59,234 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:42:59,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:42:59,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1894939822, now seen corresponding path program 11 times [2023-12-18 19:42:59,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:42:59,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515613367] [2023-12-18 19:42:59,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:42:59,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:42:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:42:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-12-18 19:42:59,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:42:59,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515613367] [2023-12-18 19:42:59,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515613367] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:42:59,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993687824] [2023-12-18 19:42:59,395 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 19:42:59,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:42:59,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:42:59,396 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) [2023-12-18 19:42:59,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-18 19:42:59,621 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-18 19:42:59,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:42:59,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-18 19:42:59,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:42:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-12-18 19:42:59,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:42:59,895 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-12-18 19:42:59,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993687824] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:42:59,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:42:59,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2023-12-18 19:42:59,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118026889] [2023-12-18 19:42:59,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:42:59,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-18 19:42:59,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:42:59,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-18 19:42:59,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2023-12-18 19:42:59,897 INFO L87 Difference]: Start difference. First operand 183 states and 207 transitions. Second operand has 34 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 34 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:43:00,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:43:00,606 INFO L93 Difference]: Finished difference Result 308 states and 355 transitions. [2023-12-18 19:43:00,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-18 19:43:00,607 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 34 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-12-18 19:43:00,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:43:00,607 INFO L225 Difference]: With dead ends: 308 [2023-12-18 19:43:00,607 INFO L226 Difference]: Without dead ends: 93 [2023-12-18 19:43:00,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 151 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=450, Invalid=2306, Unknown=0, NotChecked=0, Total=2756 [2023-12-18 19:43:00,610 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 216 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 19:43:00,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 53 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 19:43:00,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-18 19:43:00,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-12-18 19:43:00,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.1195652173913044) internal successors, (103), 92 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:43:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2023-12-18 19:43:00,628 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 82 [2023-12-18 19:43:00,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:43:00,628 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2023-12-18 19:43:00,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 34 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:43:00,629 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2023-12-18 19:43:00,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-18 19:43:00,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:43:00,629 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:43:00,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-18 19:43:00,844 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,SelfDestructingSolverStorable13 [2023-12-18 19:43:00,844 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:43:00,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:43:00,845 INFO L85 PathProgramCache]: Analyzing trace with hash 613689414, now seen corresponding path program 12 times [2023-12-18 19:43:00,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:43:00,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168872070] [2023-12-18 19:43:00,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:43:00,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:43:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:43:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 26 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:43:11,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:43:11,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168872070] [2023-12-18 19:43:11,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168872070] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:43:11,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331373501] [2023-12-18 19:43:11,499 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 19:43:11,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:43:11,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:43:11,500 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) [2023-12-18 19:43:11,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-18 19:43:11,613 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-18 19:43:11,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:43:11,617 WARN L260 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 273 conjunts are in the unsatisfiable core [2023-12-18 19:43:11,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:43:20,781 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:43:20,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2023-12-18 19:43:21,010 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 2 proven. 228 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-18 19:43:21,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:43:33,419 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:43:33,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 86 treesize of output 235 [2023-12-18 19:43:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-18 19:43:34,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331373501] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:43:34,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:43:34,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 80, 75] total 229 [2023-12-18 19:43:34,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4055145] [2023-12-18 19:43:34,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:43:34,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 229 states [2023-12-18 19:43:34,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:43:34,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 229 interpolants. [2023-12-18 19:43:34,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=925, Invalid=51286, Unknown=1, NotChecked=0, Total=52212 [2023-12-18 19:43:34,588 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand has 229 states, 229 states have (on average 1.1528384279475983) internal successors, (264), 229 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:43:51,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 19:44:28,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:44:28,144 INFO L93 Difference]: Finished difference Result 405 states and 463 transitions. [2023-12-18 19:44:28,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2023-12-18 19:44:28,144 INFO L78 Accepts]: Start accepts. Automaton has has 229 states, 229 states have (on average 1.1528384279475983) internal successors, (264), 229 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-18 19:44:28,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:44:28,145 INFO L225 Difference]: With dead ends: 405 [2023-12-18 19:44:28,146 INFO L226 Difference]: Without dead ends: 324 [2023-12-18 19:44:28,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 359 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35656 ImplicationChecksByTransitivity, 55.8s TimeCoverageRelationStatistics Valid=4045, Invalid=125914, Unknown=1, NotChecked=0, Total=129960 [2023-12-18 19:44:28,151 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 374 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 25221 mSolverCounterSat, 2481 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 27703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2481 IncrementalHoareTripleChecker+Valid, 25221 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.5s IncrementalHoareTripleChecker+Time [2023-12-18 19:44:28,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 1447 Invalid, 27703 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2481 Valid, 25221 Invalid, 1 Unknown, 0 Unchecked, 21.5s Time] [2023-12-18 19:44:28,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-12-18 19:44:28,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 231. [2023-12-18 19:44:28,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.117391304347826) internal successors, (257), 230 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:44:28,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 257 transitions. [2023-12-18 19:44:28,229 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 257 transitions. Word has length 92 [2023-12-18 19:44:28,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:44:28,230 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 257 transitions. [2023-12-18 19:44:28,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 229 states, 229 states have (on average 1.1528384279475983) internal successors, (264), 229 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:44:28,230 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 257 transitions. [2023-12-18 19:44:28,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-18 19:44:28,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:44:28,231 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:44:28,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-18 19:44:28,436 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,SelfDestructingSolverStorable14 [2023-12-18 19:44:28,436 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:44:28,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:44:28,437 INFO L85 PathProgramCache]: Analyzing trace with hash -448010426, now seen corresponding path program 13 times [2023-12-18 19:44:28,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:44:28,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105955243] [2023-12-18 19:44:28,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:44:28,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:44:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:44:28,625 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-12-18 19:44:28,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:44:28,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105955243] [2023-12-18 19:44:28,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105955243] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:44:28,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138007392] [2023-12-18 19:44:28,626 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 19:44:28,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:44:28,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:44:28,627 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) [2023-12-18 19:44:28,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-18 19:44:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:44:28,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-18 19:44:28,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:44:28,885 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-12-18 19:44:28,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:44:29,031 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-12-18 19:44:29,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138007392] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:44:29,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:44:29,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2023-12-18 19:44:29,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276366081] [2023-12-18 19:44:29,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:44:29,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-18 19:44:29,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:44:29,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-18 19:44:29,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2023-12-18 19:44:29,032 INFO L87 Difference]: Start difference. First operand 231 states and 257 transitions. Second operand has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:44:29,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:44:29,583 INFO L93 Difference]: Finished difference Result 395 states and 443 transitions. [2023-12-18 19:44:29,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-18 19:44:29,584 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-18 19:44:29,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:44:29,584 INFO L225 Difference]: With dead ends: 395 [2023-12-18 19:44:29,584 INFO L226 Difference]: Without dead ends: 104 [2023-12-18 19:44:29,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 164 SyntacticMatches, 13 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2023-12-18 19:44:29,585 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 127 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 19:44:29,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 37 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 19:44:29,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-18 19:44:29,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-12-18 19:44:29,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.1067961165048543) internal successors, (114), 103 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:44:29,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2023-12-18 19:44:29,626 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 93 [2023-12-18 19:44:29,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:44:29,626 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2023-12-18 19:44:29,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:44:29,626 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2023-12-18 19:44:29,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-18 19:44:29,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:44:29,626 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:44:29,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-18 19:44:29,827 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,SelfDestructingSolverStorable15 [2023-12-18 19:44:29,827 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:44:29,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:44:29,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1814969604, now seen corresponding path program 14 times [2023-12-18 19:44:29,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:44:29,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365147635] [2023-12-18 19:44:29,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:44:29,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:44:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:44:44,376 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 13 proven. 295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:44:44,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:44:44,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365147635] [2023-12-18 19:44:44,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365147635] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:44:44,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748230291] [2023-12-18 19:44:44,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 19:44:44,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:44:44,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:44:44,378 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) [2023-12-18 19:44:44,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-18 19:44:44,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 19:44:44,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:44:44,504 WARN L260 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 306 conjunts are in the unsatisfiable core [2023-12-18 19:44:44,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:44:44,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-18 19:44:55,512 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:44:55,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:45:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-18 19:45:20,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748230291] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:45:20,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:45:20,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 83, 79] total 247 [2023-12-18 19:45:20,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809986697] [2023-12-18 19:45:20,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:45:20,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 247 states [2023-12-18 19:45:20,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:45:20,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 247 interpolants. [2023-12-18 19:45:20,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=59857, Unknown=0, NotChecked=0, Total=60762 [2023-12-18 19:45:20,935 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand has 247 states, 247 states have (on average 1.1862348178137652) internal successors, (293), 247 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:46:07,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:46:07,532 INFO L93 Difference]: Finished difference Result 377 states and 421 transitions. [2023-12-18 19:46:07,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2023-12-18 19:46:07,532 INFO L78 Accepts]: Start accepts. Automaton has has 247 states, 247 states have (on average 1.1862348178137652) internal successors, (293), 247 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-18 19:46:07,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:46:07,533 INFO L225 Difference]: With dead ends: 377 [2023-12-18 19:46:07,533 INFO L226 Difference]: Without dead ends: 289 [2023-12-18 19:46:07,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28687 ImplicationChecksByTransitivity, 70.8s TimeCoverageRelationStatistics Valid=2823, Invalid=121433, Unknown=0, NotChecked=0, Total=124256 [2023-12-18 19:46:07,539 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 174 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 24927 mSolverCounterSat, 890 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 25817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 890 IncrementalHoareTripleChecker+Valid, 24927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2023-12-18 19:46:07,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 1021 Invalid, 25817 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [890 Valid, 24927 Invalid, 0 Unknown, 0 Unchecked, 15.8s Time] [2023-12-18 19:46:07,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-18 19:46:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 201. [2023-12-18 19:46:07,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.1) internal successors, (220), 200 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:46:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 220 transitions. [2023-12-18 19:46:07,633 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 220 transitions. Word has length 103 [2023-12-18 19:46:07,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:46:07,633 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 220 transitions. [2023-12-18 19:46:07,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 247 states, 247 states have (on average 1.1862348178137652) internal successors, (293), 247 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:46:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 220 transitions. [2023-12-18 19:46:07,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-18 19:46:07,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:46:07,634 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:46:07,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-18 19:46:07,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:46:07,835 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:46:07,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:46:07,835 INFO L85 PathProgramCache]: Analyzing trace with hash -907197166, now seen corresponding path program 15 times [2023-12-18 19:46:07,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:46:07,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290354729] [2023-12-18 19:46:07,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:46:07,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:46:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:46:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-12-18 19:46:08,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:46:08,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290354729] [2023-12-18 19:46:08,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290354729] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:46:08,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149597563] [2023-12-18 19:46:08,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 19:46:08,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:46:08,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:46:08,086 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) [2023-12-18 19:46:08,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-18 19:46:08,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-18 19:46:08,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:46:08,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-18 19:46:08,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:46:08,400 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-12-18 19:46:08,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:46:08,531 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-12-18 19:46:08,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149597563] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:46:08,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:46:08,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2023-12-18 19:46:08,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064405847] [2023-12-18 19:46:08,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:46:08,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-18 19:46:08,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:46:08,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-18 19:46:08,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2023-12-18 19:46:08,532 INFO L87 Difference]: Start difference. First operand 201 states and 220 transitions. Second operand has 29 states, 29 states have (on average 2.7241379310344827) internal successors, (79), 29 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:46:09,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:46:09,204 INFO L93 Difference]: Finished difference Result 371 states and 411 transitions. [2023-12-18 19:46:09,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-18 19:46:09,207 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.7241379310344827) internal successors, (79), 29 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-18 19:46:09,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:46:09,208 INFO L225 Difference]: With dead ends: 371 [2023-12-18 19:46:09,208 INFO L226 Difference]: Without dead ends: 162 [2023-12-18 19:46:09,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 191 SyntacticMatches, 15 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=335, Invalid=997, Unknown=0, NotChecked=0, Total=1332 [2023-12-18 19:46:09,209 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 98 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 19:46:09,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 54 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 19:46:09,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-18 19:46:09,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 150. [2023-12-18 19:46:09,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.1006711409395973) internal successors, (164), 149 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:46:09,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 164 transitions. [2023-12-18 19:46:09,279 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 164 transitions. Word has length 104 [2023-12-18 19:46:09,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:46:09,279 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 164 transitions. [2023-12-18 19:46:09,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.7241379310344827) internal successors, (79), 29 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:46:09,279 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 164 transitions. [2023-12-18 19:46:09,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-18 19:46:09,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:46:09,279 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:46:09,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-18 19:46:09,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-18 19:46:09,485 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:46:09,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:46:09,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1444350295, now seen corresponding path program 16 times [2023-12-18 19:46:09,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:46:09,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518755568] [2023-12-18 19:46:09,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:46:09,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:46:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:46:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-18 19:46:09,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:46:09,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518755568] [2023-12-18 19:46:09,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518755568] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:46:09,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395142696] [2023-12-18 19:46:09,730 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 19:46:09,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:46:09,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:46:09,732 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:46:09,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-18 19:46:09,831 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 19:46:09,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:46:09,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-18 19:46:09,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:46:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-18 19:46:09,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:46:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-18 19:46:10,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395142696] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:46:10,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:46:10,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2023-12-18 19:46:10,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572450351] [2023-12-18 19:46:10,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:46:10,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-18 19:46:10,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:46:10,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-18 19:46:10,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2023-12-18 19:46:10,157 INFO L87 Difference]: Start difference. First operand 150 states and 164 transitions. Second operand has 29 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:46:10,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:46:10,691 INFO L93 Difference]: Finished difference Result 155 states and 169 transitions. [2023-12-18 19:46:10,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-18 19:46:10,691 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-18 19:46:10,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:46:10,692 INFO L225 Difference]: With dead ends: 155 [2023-12-18 19:46:10,692 INFO L226 Difference]: Without dead ends: 115 [2023-12-18 19:46:10,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 193 SyntacticMatches, 16 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=346, Invalid=1136, Unknown=0, NotChecked=0, Total=1482 [2023-12-18 19:46:10,693 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 60 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 19:46:10,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 26 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 19:46:10,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-18 19:46:10,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-12-18 19:46:10,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0964912280701755) internal successors, (125), 114 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:46:10,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2023-12-18 19:46:10,762 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 109 [2023-12-18 19:46:10,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:46:10,763 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 125 transitions. [2023-12-18 19:46:10,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:46:10,763 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 125 transitions. [2023-12-18 19:46:10,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-18 19:46:10,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:46:10,763 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:46:10,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-18 19:46:10,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:46:10,969 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:46:10,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:46:10,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1762082374, now seen corresponding path program 17 times [2023-12-18 19:46:10,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:46:10,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302016270] [2023-12-18 19:46:10,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:46:10,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:46:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:46:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 45 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:46:31,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:46:31,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302016270] [2023-12-18 19:46:31,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302016270] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:46:31,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758895264] [2023-12-18 19:46:31,350 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 19:46:31,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:46:31,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:46:31,351 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:46:31,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-18 19:46:31,600 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-18 19:46:31,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:46:31,606 WARN L260 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 362 conjunts are in the unsatisfiable core [2023-12-18 19:46:31,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:46:31,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-18 19:46:31,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-12-18 19:46:31,831 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:46:31,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-12-18 19:46:31,950 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:46:31,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-12-18 19:46:32,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:46:32,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2023-12-18 19:46:32,225 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:46:32,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2023-12-18 19:46:32,380 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:46:32,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2023-12-18 19:46:32,525 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:46:32,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2023-12-18 19:46:46,287 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:46:46,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:47:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-18 19:47:17,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758895264] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:47:17,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:47:17,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 89, 89] total 275 [2023-12-18 19:47:17,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713967487] [2023-12-18 19:47:17,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:47:17,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 275 states [2023-12-18 19:47:17,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:47:17,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 275 interpolants. [2023-12-18 19:47:17,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1091, Invalid=74259, Unknown=0, NotChecked=0, Total=75350 [2023-12-18 19:47:17,658 INFO L87 Difference]: Start difference. First operand 115 states and 125 transitions. Second operand has 275 states, 275 states have (on average 1.1854545454545455) internal successors, (326), 275 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:48:24,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:48:24,543 INFO L93 Difference]: Finished difference Result 384 states and 432 transitions. [2023-12-18 19:48:24,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2023-12-18 19:48:24,543 INFO L78 Accepts]: Start accepts. Automaton has has 275 states, 275 states have (on average 1.1854545454545455) internal successors, (326), 275 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-18 19:48:24,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:48:24,544 INFO L225 Difference]: With dead ends: 384 [2023-12-18 19:48:24,544 INFO L226 Difference]: Without dead ends: 286 [2023-12-18 19:48:24,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47180 ImplicationChecksByTransitivity, 95.3s TimeCoverageRelationStatistics Valid=6222, Invalid=167250, Unknown=0, NotChecked=0, Total=173472 [2023-12-18 19:48:24,552 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 762 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 31318 mSolverCounterSat, 3323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 34641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3323 IncrementalHoareTripleChecker+Valid, 31318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2023-12-18 19:48:24,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 580 Invalid, 34641 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3323 Valid, 31318 Invalid, 0 Unknown, 0 Unchecked, 21.3s Time] [2023-12-18 19:48:24,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-12-18 19:48:24,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 161. [2023-12-18 19:48:24,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.10625) internal successors, (177), 160 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:48:24,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 177 transitions. [2023-12-18 19:48:24,636 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 177 transitions. Word has length 114 [2023-12-18 19:48:24,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:48:24,636 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 177 transitions. [2023-12-18 19:48:24,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 275 states, 275 states have (on average 1.1854545454545455) internal successors, (326), 275 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:48:24,636 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 177 transitions. [2023-12-18 19:48:24,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-18 19:48:24,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:48:24,637 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:48:24,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-18 19:48:24,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:48:24,838 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:48:24,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:48:24,838 INFO L85 PathProgramCache]: Analyzing trace with hash -729287290, now seen corresponding path program 18 times [2023-12-18 19:48:24,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:48:24,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329587910] [2023-12-18 19:48:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:48:24,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:48:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:48:25,131 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 37 proven. 44 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-18 19:48:25,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:48:25,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329587910] [2023-12-18 19:48:25,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329587910] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:48:25,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989699660] [2023-12-18 19:48:25,132 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 19:48:25,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:48:25,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:48:25,133 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:48:25,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-18 19:48:25,363 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-12-18 19:48:25,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:48:25,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-18 19:48:25,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:48:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-18 19:48:25,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:48:25,712 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-18 19:48:25,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989699660] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:48:25,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:48:25,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2023-12-18 19:48:25,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226079385] [2023-12-18 19:48:25,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:48:25,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-18 19:48:25,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:48:25,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-18 19:48:25,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2023-12-18 19:48:25,714 INFO L87 Difference]: Start difference. First operand 161 states and 177 transitions. Second operand has 32 states, 32 states have (on average 2.59375) internal successors, (83), 32 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:48:26,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:48:26,561 INFO L93 Difference]: Finished difference Result 419 states and 464 transitions. [2023-12-18 19:48:26,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-18 19:48:26,561 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.59375) internal successors, (83), 32 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-18 19:48:26,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:48:26,562 INFO L225 Difference]: With dead ends: 419 [2023-12-18 19:48:26,562 INFO L226 Difference]: Without dead ends: 177 [2023-12-18 19:48:26,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 211 SyntacticMatches, 17 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=407, Invalid=1233, Unknown=0, NotChecked=0, Total=1640 [2023-12-18 19:48:26,563 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 80 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 955 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 955 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 19:48:26,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 42 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [955 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 19:48:26,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-18 19:48:26,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 165. [2023-12-18 19:48:26,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.0914634146341464) internal successors, (179), 164 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:48:26,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 179 transitions. [2023-12-18 19:48:26,653 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 179 transitions. Word has length 115 [2023-12-18 19:48:26,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:48:26,653 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 179 transitions. [2023-12-18 19:48:26,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.59375) internal successors, (83), 32 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:48:26,653 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 179 transitions. [2023-12-18 19:48:26,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-18 19:48:26,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:48:26,654 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:48:26,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-18 19:48:26,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:48:26,854 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:48:26,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:48:26,855 INFO L85 PathProgramCache]: Analyzing trace with hash 329458657, now seen corresponding path program 19 times [2023-12-18 19:48:26,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:48:26,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332758146] [2023-12-18 19:48:26,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:48:26,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:48:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:48:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 28 proven. 53 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2023-12-18 19:48:27,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:48:27,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332758146] [2023-12-18 19:48:27,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332758146] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:48:27,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471020078] [2023-12-18 19:48:27,153 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 19:48:27,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:48:27,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:48:27,154 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:48:27,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-18 19:48:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:48:27,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-18 19:48:27,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:48:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 36 proven. 45 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2023-12-18 19:48:27,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:48:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 36 proven. 45 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2023-12-18 19:48:27,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471020078] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:48:27,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:48:27,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2023-12-18 19:48:27,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924774704] [2023-12-18 19:48:27,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:48:27,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-18 19:48:27,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:48:27,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-18 19:48:27,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2023-12-18 19:48:27,657 INFO L87 Difference]: Start difference. First operand 165 states and 179 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:48:28,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:48:28,219 INFO L93 Difference]: Finished difference Result 170 states and 184 transitions. [2023-12-18 19:48:28,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-18 19:48:28,219 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-12-18 19:48:28,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:48:28,220 INFO L225 Difference]: With dead ends: 170 [2023-12-18 19:48:28,220 INFO L226 Difference]: Without dead ends: 126 [2023-12-18 19:48:28,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 211 SyntacticMatches, 18 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=418, Invalid=1388, Unknown=0, NotChecked=0, Total=1806 [2023-12-18 19:48:28,221 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 60 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 19:48:28,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 26 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 19:48:28,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-18 19:48:28,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-12-18 19:48:28,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.088) internal successors, (136), 125 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:48:28,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 136 transitions. [2023-12-18 19:48:28,288 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 136 transitions. Word has length 120 [2023-12-18 19:48:28,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:48:28,288 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 136 transitions. [2023-12-18 19:48:28,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:48:28,289 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 136 transitions. [2023-12-18 19:48:28,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-18 19:48:28,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:48:28,289 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:48:28,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-18 19:48:28,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:48:28,490 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:48:28,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:48:28,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1633285116, now seen corresponding path program 20 times [2023-12-18 19:48:28,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:48:28,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232888505] [2023-12-18 19:48:28,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:48:28,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:48:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:48:55,643 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 44 proven. 451 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:48:55,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:48:55,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232888505] [2023-12-18 19:48:55,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232888505] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:48:55,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665698686] [2023-12-18 19:48:55,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 19:48:55,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:48:55,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:48:55,644 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:48:55,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-18 19:48:55,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 19:48:55,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:48:55,814 WARN L260 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 390 conjunts are in the unsatisfiable core [2023-12-18 19:48:55,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:48:56,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-18 19:49:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:49:15,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:50:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-18 19:50:04,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665698686] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:50:04,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:50:04,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 105, 99] total 311 [2023-12-18 19:50:04,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526927748] [2023-12-18 19:50:04,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:50:04,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 311 states [2023-12-18 19:50:04,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:50:04,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 311 interpolants. [2023-12-18 19:50:04,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1114, Invalid=95296, Unknown=0, NotChecked=0, Total=96410 [2023-12-18 19:50:04,012 INFO L87 Difference]: Start difference. First operand 126 states and 136 transitions. Second operand has 311 states, 311 states have (on average 1.1479099678456592) internal successors, (357), 311 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:52:07,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:52:07,153 INFO L93 Difference]: Finished difference Result 373 states and 417 transitions. [2023-12-18 19:52:07,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2023-12-18 19:52:07,154 INFO L78 Accepts]: Start accepts. Automaton has has 311 states, 311 states have (on average 1.1479099678456592) internal successors, (357), 311 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2023-12-18 19:52:07,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:52:07,155 INFO L225 Difference]: With dead ends: 373 [2023-12-18 19:52:07,155 INFO L226 Difference]: Without dead ends: 367 [2023-12-18 19:52:07,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 469 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48539 ImplicationChecksByTransitivity, 160.4s TimeCoverageRelationStatistics Valid=7229, Invalid=214141, Unknown=0, NotChecked=0, Total=221370 [2023-12-18 19:52:07,164 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 919 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 50949 mSolverCounterSat, 4713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 55662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4713 IncrementalHoareTripleChecker+Valid, 50949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.2s IncrementalHoareTripleChecker+Time [2023-12-18 19:52:07,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 667 Invalid, 55662 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4713 Valid, 50949 Invalid, 0 Unknown, 0 Unchecked, 37.2s Time] [2023-12-18 19:52:07,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-12-18 19:52:07,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 173. [2023-12-18 19:52:07,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.0930232558139534) internal successors, (188), 172 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:52:07,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 188 transitions. [2023-12-18 19:52:07,273 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 188 transitions. Word has length 125 [2023-12-18 19:52:07,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:52:07,273 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 188 transitions. [2023-12-18 19:52:07,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 311 states, 311 states have (on average 1.1479099678456592) internal successors, (357), 311 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:52:07,274 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 188 transitions. [2023-12-18 19:52:07,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-18 19:52:07,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:52:07,274 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:52:07,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-18 19:52:07,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-18 19:52:07,475 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:52:07,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:52:07,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1377920722, now seen corresponding path program 21 times [2023-12-18 19:52:07,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:52:07,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214695911] [2023-12-18 19:52:07,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:52:07,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:52:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:52:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 46 proven. 54 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2023-12-18 19:52:07,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:52:07,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214695911] [2023-12-18 19:52:07,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214695911] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:52:07,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752721353] [2023-12-18 19:52:07,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 19:52:07,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:52:07,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:52:07,848 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:52:07,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-18 19:52:08,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-18 19:52:08,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:52:08,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-18 19:52:08,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:52:08,327 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2023-12-18 19:52:08,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:52:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2023-12-18 19:52:08,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752721353] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:52:08,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:52:08,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2023-12-18 19:52:08,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913788363] [2023-12-18 19:52:08,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:52:08,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-18 19:52:08,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:52:08,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-18 19:52:08,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2023-12-18 19:52:08,530 INFO L87 Difference]: Start difference. First operand 173 states and 188 transitions. Second operand has 35 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 35 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:52:09,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:52:09,483 INFO L93 Difference]: Finished difference Result 458 states and 504 transitions. [2023-12-18 19:52:09,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-18 19:52:09,483 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 35 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-12-18 19:52:09,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:52:09,484 INFO L225 Difference]: With dead ends: 458 [2023-12-18 19:52:09,484 INFO L226 Difference]: Without dead ends: 192 [2023-12-18 19:52:09,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 222 SyntacticMatches, 19 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=486, Invalid=1494, Unknown=0, NotChecked=0, Total=1980 [2023-12-18 19:52:09,485 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 55 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 886 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 886 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 19:52:09,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 45 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [886 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 19:52:09,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-18 19:52:09,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 180. [2023-12-18 19:52:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.0837988826815643) internal successors, (194), 179 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:52:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 194 transitions. [2023-12-18 19:52:09,606 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 194 transitions. Word has length 126 [2023-12-18 19:52:09,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:52:09,607 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 194 transitions. [2023-12-18 19:52:09,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 35 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:52:09,607 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 194 transitions. [2023-12-18 19:52:09,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-18 19:52:09,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:52:09,608 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:52:09,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-18 19:52:09,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-18 19:52:09,815 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:52:09,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:52:09,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1932717353, now seen corresponding path program 22 times [2023-12-18 19:52:09,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:52:09,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158274256] [2023-12-18 19:52:09,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:52:09,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:52:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:52:10,169 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2023-12-18 19:52:10,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:52:10,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158274256] [2023-12-18 19:52:10,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158274256] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:52:10,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77338423] [2023-12-18 19:52:10,170 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 19:52:10,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:52:10,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:52:10,171 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:52:10,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-18 19:52:10,294 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 19:52:10,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:52:10,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-18 19:52:10,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:52:10,524 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2023-12-18 19:52:10,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:52:10,748 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2023-12-18 19:52:10,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77338423] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:52:10,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:52:10,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2023-12-18 19:52:10,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203528509] [2023-12-18 19:52:10,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:52:10,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-18 19:52:10,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:52:10,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-18 19:52:10,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2023-12-18 19:52:10,750 INFO L87 Difference]: Start difference. First operand 180 states and 194 transitions. Second operand has 35 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 35 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:52:11,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:52:11,398 INFO L93 Difference]: Finished difference Result 185 states and 199 transitions. [2023-12-18 19:52:11,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-18 19:52:11,398 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 35 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2023-12-18 19:52:11,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:52:11,398 INFO L225 Difference]: With dead ends: 185 [2023-12-18 19:52:11,399 INFO L226 Difference]: Without dead ends: 137 [2023-12-18 19:52:11,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 231 SyntacticMatches, 20 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=497, Invalid=1665, Unknown=0, NotChecked=0, Total=2162 [2023-12-18 19:52:11,399 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 114 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 19:52:11,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 29 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 19:52:11,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-18 19:52:11,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-12-18 19:52:11,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.0808823529411764) internal successors, (147), 136 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:52:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 147 transitions. [2023-12-18 19:52:11,490 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 147 transitions. Word has length 131 [2023-12-18 19:52:11,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:52:11,490 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 147 transitions. [2023-12-18 19:52:11,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 35 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:52:11,491 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 147 transitions. [2023-12-18 19:52:11,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-18 19:52:11,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:52:11,491 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:52:11,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-18 19:52:11,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:52:11,697 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:52:11,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:52:11,697 INFO L85 PathProgramCache]: Analyzing trace with hash 670983238, now seen corresponding path program 23 times [2023-12-18 19:52:11,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:52:11,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956239418] [2023-12-18 19:52:11,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:52:11,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:52:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:52:45,269 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 62 proven. 543 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:52:45,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:52:45,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956239418] [2023-12-18 19:52:45,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956239418] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:52:45,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433465896] [2023-12-18 19:52:45,269 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 19:52:45,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:52:45,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:52:45,270 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:52:45,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-18 19:52:45,967 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-18 19:52:45,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:52:45,977 WARN L260 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 442 conjunts are in the unsatisfiable core [2023-12-18 19:52:45,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:52:46,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-18 19:52:46,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-12-18 19:52:46,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:52:46,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-12-18 19:52:46,714 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:52:46,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-12-18 19:52:46,854 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:52:46,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2023-12-18 19:52:47,002 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:52:47,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2023-12-18 19:53:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 605 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:53:10,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:54:00,954 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-18 19:54:00,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433465896] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:54:00,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:54:00,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 116, 109] total 343 [2023-12-18 19:54:00,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076946787] [2023-12-18 19:54:00,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:54:00,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 343 states [2023-12-18 19:54:00,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:54:00,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 343 interpolants. [2023-12-18 19:54:00,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1929, Invalid=115377, Unknown=0, NotChecked=0, Total=117306 [2023-12-18 19:54:00,960 INFO L87 Difference]: Start difference. First operand 137 states and 147 transitions. Second operand has 343 states, 343 states have (on average 1.1341107871720117) internal successors, (389), 343 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-18 19:54:49,495 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 [2023-12-18 19:54:49,495 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 19:54:49,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-18 19:54:49,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 435 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59597 ImplicationChecksByTransitivity, 115.5s TimeCoverageRelationStatistics Valid=4322, Invalid=186210, Unknown=0, NotChecked=0, Total=190532 [2023-12-18 19:54:49,599 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 110 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 19767 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 20411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 19767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2023-12-18 19:54:49,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 219 Invalid, 20411 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [644 Valid, 19767 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2023-12-18 19:54:49,600 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-18 19:54:49,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-18 19:54:49,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:54:49,812 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (137states) and FLOYD_HOARE automaton (currently 98 states, 343 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 437 known predicates. [2023-12-18 19:54:49,816 INFO L445 BasicCegarLoop]: Path program histogram: [23, 1, 1, 1] [2023-12-18 19:54:49,818 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-18 19:54:49,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 07:54:49 BoogieIcfgContainer [2023-12-18 19:54:49,819 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-18 19:54:49,820 INFO L158 Benchmark]: Toolchain (without parser) took 826532.69ms. Allocated memory was 188.7MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 143.9MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 583.6MB. Max. memory is 8.0GB. [2023-12-18 19:54:49,820 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory was 146.7MB in the beginning and 146.6MB in the end (delta: 150.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 19:54:49,821 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.90ms. Allocated memory is still 188.7MB. Free memory was 143.6MB in the beginning and 131.9MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-18 19:54:49,821 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.98ms. Allocated memory is still 188.7MB. Free memory was 131.9MB in the beginning and 130.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 19:54:49,822 INFO L158 Benchmark]: Boogie Preprocessor took 33.89ms. Allocated memory is still 188.7MB. Free memory was 130.0MB in the beginning and 127.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 19:54:49,822 INFO L158 Benchmark]: RCFGBuilder took 290.66ms. Allocated memory is still 188.7MB. Free memory was 127.6MB in the beginning and 110.6MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-18 19:54:49,822 INFO L158 Benchmark]: TraceAbstraction took 825972.82ms. Allocated memory was 188.7MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 109.8MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 550.0MB. Max. memory is 8.0GB. [2023-12-18 19:54:49,828 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory was 146.7MB in the beginning and 146.6MB in the end (delta: 150.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 206.90ms. Allocated memory is still 188.7MB. Free memory was 143.6MB in the beginning and 131.9MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.98ms. Allocated memory is still 188.7MB. Free memory was 131.9MB in the beginning and 130.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.89ms. Allocated memory is still 188.7MB. Free memory was 130.0MB in the beginning and 127.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 290.66ms. Allocated memory is still 188.7MB. Free memory was 127.6MB in the beginning and 110.6MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 825972.82ms. Allocated memory was 188.7MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 109.8MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 550.0MB. 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: 8]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 8). Cancelled while NwaCegarLoop was constructing difference of abstraction (137states) and FLOYD_HOARE automaton (currently 98 states, 343 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 437 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 825.9s, OverallIterations: 26, TraceHistogramMax: 10, PathProgramHistogramMax: 23, EmptinessCheckTime: 0.0s, AutomataDifference: 403.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 4891 SdHoareTripleChecker+Valid, 134.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4891 mSDsluCounter, 6614 SdHoareTripleChecker+Invalid, 121.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6075 mSDsCounter, 22748 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 198990 IncrementalHoareTripleChecker+Invalid, 221739 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22748 mSolverCounterUnsat, 539 mSDtfsCounter, 198990 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6115 GetRequests, 2668 SyntacticMatches, 158 SemanticMatches, 3288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276122 ImplicationChecksByTransitivity, 572.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=231occurred in iteration=15, InterpolantAutomatonStates: 1195, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 25 MinimizatonAttempts, 744 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 410.6s InterpolantComputationTime, 4165 NumberOfCodeBlocks, 4159 NumberOfCodeBlocksAsserted, 91 NumberOfCheckSat, 6136 ConstructedInterpolants, 9 QuantifiedInterpolants, 153724 SizeOfPredicates, 113 NumberOfNonLiveVariables, 9231 ConjunctsInSsa, 2607 ConjunctsInUnsatCore, 72 InterpolantComputations, 3 PerfectInterpolantSequences, 9565/17431 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