/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_m4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 19:40:57,105 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 19:40:57,168 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 19:40:57,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 19:40:57,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 19:40:57,199 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 19:40:57,200 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 19:40:57,200 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 19:40:57,201 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 19:40:57,205 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 19:40:57,205 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 19:40:57,205 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 19:40:57,205 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 19:40:57,206 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 19:40:57,207 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 19:40:57,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 19:40:57,207 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 19:40:57,207 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 19:40:57,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 19:40:57,209 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 19:40:57,209 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 19:40:57,209 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 19:40:57,209 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 19:40:57,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 19:40:57,209 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 19:40:57,210 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 19:40:57,210 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 19:40:57,210 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 19:40:57,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 19:40:57,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 19:40:57,211 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 19:40:57,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 19:40:57,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 19:40:57,212 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 19:40:57,212 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 19:40:57,212 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 19:40:57,212 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 19:40:57,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 19:40:57,212 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 19:40:57,212 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 19:40:57,212 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 19:40:57,213 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 19:40:57,213 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 19:40:57,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 19:40:57,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 19:40:57,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 19:40:57,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 19:40:57,418 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 19:40:57,418 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 19:40:57,419 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m4.c [2023-12-18 19:40:58,458 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 19:40:58,604 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 19:40:58,606 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const_m4.c [2023-12-18 19:40:58,611 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a54686382/60c430a652be41c9a092bfdeede2a43e/FLAG651985c85 [2023-12-18 19:40:58,623 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a54686382/60c430a652be41c9a092bfdeede2a43e [2023-12-18 19:40:58,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 19:40:58,626 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 19:40:58,627 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 19:40:58,627 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 19:40:58,630 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 19:40:58,631 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:40:58" (1/1) ... [2023-12-18 19:40:58,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b721b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:40:58, skipping insertion in model container [2023-12-18 19:40:58,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:40:58" (1/1) ... [2023-12-18 19:40:58,649 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 19:40:58,759 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_m4.c[408,421] [2023-12-18 19:40:58,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 19:40:58,780 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 19:40:58,789 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_m4.c[408,421] [2023-12-18 19:40:58,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 19:40:58,805 INFO L206 MainTranslator]: Completed translation [2023-12-18 19:40:58,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:40:58 WrapperNode [2023-12-18 19:40:58,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 19:40:58,806 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 19:40:58,806 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 19:40:58,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 19:40:58,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:40:58" (1/1) ... [2023-12-18 19:40:58,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:40:58" (1/1) ... [2023-12-18 19:40:58,841 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 127 [2023-12-18 19:40:58,841 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 19:40:58,842 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 19:40:58,842 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 19:40:58,842 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 19:40:58,851 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:40:58" (1/1) ... [2023-12-18 19:40:58,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:40:58" (1/1) ... [2023-12-18 19:40:58,853 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:40:58" (1/1) ... [2023-12-18 19:40:58,864 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 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 19:40:58,865 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:40:58" (1/1) ... [2023-12-18 19:40:58,865 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:40:58" (1/1) ... [2023-12-18 19:40:58,871 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:40:58" (1/1) ... [2023-12-18 19:40:58,874 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:40:58" (1/1) ... [2023-12-18 19:40:58,874 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:40:58" (1/1) ... [2023-12-18 19:40:58,875 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:40:58" (1/1) ... [2023-12-18 19:40:58,876 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 19:40:58,877 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 19:40:58,877 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 19:40:58,877 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 19:40:58,878 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:40:58" (1/1) ... [2023-12-18 19:40:58,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 19:40:58,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:40:58,904 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 19:40:58,907 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 19:40:58,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 19:40:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 19:40:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-18 19:40:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-18 19:40:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-18 19:40:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-18 19:40:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 19:40:58,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 19:40:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-18 19:40:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-18 19:40:58,986 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 19:40:58,987 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 19:40:59,110 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 19:40:59,144 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 19:40:59,144 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-12-18 19:40:59,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:40:59 BoogieIcfgContainer [2023-12-18 19:40:59,144 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 19:40:59,146 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 19:40:59,146 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 19:40:59,148 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 19:40:59,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 07:40:58" (1/3) ... [2023-12-18 19:40:59,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b8cc2fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:40:59, skipping insertion in model container [2023-12-18 19:40:59,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:40:58" (2/3) ... [2023-12-18 19:40:59,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b8cc2fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:40:59, skipping insertion in model container [2023-12-18 19:40:59,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:40:59" (3/3) ... [2023-12-18 19:40:59,150 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m4.c [2023-12-18 19:40:59,161 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 19:40:59,161 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-18 19:40:59,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 19:40:59,192 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;@239a1899, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 19:40:59,192 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-18 19:40:59,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.875) internal successors, (45), 25 states have internal predecessors, (45), 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 19:40:59,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-18 19:40:59,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:40:59,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:40:59,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:40:59,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:40:59,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1145627675, now seen corresponding path program 1 times [2023-12-18 19:40:59,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:40:59,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110610609] [2023-12-18 19:40:59,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:40:59,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:40:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:40:59,346 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 19:40:59,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:40:59,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110610609] [2023-12-18 19:40:59,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110610609] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 19:40:59,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 19:40:59,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 19:40:59,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398183611] [2023-12-18 19:40:59,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 19:40:59,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-18 19:40:59,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:40:59,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-18 19:40:59,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 19:40:59,378 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.875) internal successors, (45), 25 states have internal predecessors, (45), 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 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 19:40:59,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:40:59,403 INFO L93 Difference]: Finished difference Result 49 states and 84 transitions. [2023-12-18 19:40:59,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 19:40:59,405 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 22 [2023-12-18 19:40:59,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:40:59,410 INFO L225 Difference]: With dead ends: 49 [2023-12-18 19:40:59,410 INFO L226 Difference]: Without dead ends: 23 [2023-12-18 19:40:59,411 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 19:40:59,414 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 19:40:59,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 19:40:59,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-18 19:40:59,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-18 19:40:59,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 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 19:40:59,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2023-12-18 19:40:59,442 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 22 [2023-12-18 19:40:59,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:40:59,442 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2023-12-18 19:40:59,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 19:40:59,443 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2023-12-18 19:40:59,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-18 19:40:59,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:40:59,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:40:59,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 19:40:59,444 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:40:59,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:40:59,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1559691955, now seen corresponding path program 1 times [2023-12-18 19:40:59,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:40:59,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923043704] [2023-12-18 19:40:59,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:40:59,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:40:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:40:59,551 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 19:40:59,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:40:59,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923043704] [2023-12-18 19:40:59,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923043704] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 19:40:59,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 19:40:59,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 19:40:59,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618561216] [2023-12-18 19:40:59,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 19:40:59,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 19:40:59,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:40:59,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 19:40:59,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 19:40:59,554 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 19:40:59,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:40:59,590 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2023-12-18 19:40:59,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 19:40:59,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2023-12-18 19:40:59,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:40:59,591 INFO L225 Difference]: With dead ends: 44 [2023-12-18 19:40:59,591 INFO L226 Difference]: Without dead ends: 24 [2023-12-18 19:40:59,592 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 19:40:59,594 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 19:40:59,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 19:40:59,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-18 19:40:59,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-18 19:40:59,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 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 19:40:59,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2023-12-18 19:40:59,599 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 22 [2023-12-18 19:40:59,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:40:59,600 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2023-12-18 19:40:59,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 19:40:59,601 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2023-12-18 19:40:59,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-18 19:40:59,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:40:59,602 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] [2023-12-18 19:40:59,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 19:40:59,602 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:40:59,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:40:59,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1137628768, now seen corresponding path program 1 times [2023-12-18 19:40:59,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:40:59,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349590767] [2023-12-18 19:40:59,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:40:59,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:40:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:40:59,687 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 19:40:59,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:40:59,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349590767] [2023-12-18 19:40:59,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349590767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 19:40:59,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 19:40:59,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 19:40:59,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599120639] [2023-12-18 19:40:59,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 19:40:59,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 19:40:59,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:40:59,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 19:40:59,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 19:40:59,689 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 19:40:59,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:40:59,747 INFO L93 Difference]: Finished difference Result 50 states and 72 transitions. [2023-12-18 19:40:59,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 19:40:59,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 23 [2023-12-18 19:40:59,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:40:59,751 INFO L225 Difference]: With dead ends: 50 [2023-12-18 19:40:59,751 INFO L226 Difference]: Without dead ends: 32 [2023-12-18 19:40:59,751 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 19:40:59,755 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 27 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 19:40:59,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 15 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 19:40:59,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-18 19:40:59,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-18 19:40:59,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 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 19:40:59,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2023-12-18 19:40:59,764 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 23 [2023-12-18 19:40:59,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:40:59,764 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2023-12-18 19:40:59,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 19:40:59,764 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2023-12-18 19:40:59,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-18 19:40:59,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:40:59,765 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] [2023-12-18 19:40:59,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 19:40:59,765 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:40:59,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:40:59,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1009747867, now seen corresponding path program 1 times [2023-12-18 19:40:59,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:40:59,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739005420] [2023-12-18 19:40:59,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:40:59,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:40:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:40:59,859 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-18 19:40:59,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:40:59,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739005420] [2023-12-18 19:40:59,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739005420] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:40:59,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112067271] [2023-12-18 19:40:59,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:40:59,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:40:59,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:40:59,863 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 19:40:59,892 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 19:40:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:40:59,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-18 19:40:59,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:40:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-18 19:40:59,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:41:00,006 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-18 19:41:00,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112067271] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:41:00,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:41:00,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-12-18 19:41:00,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654114329] [2023-12-18 19:41:00,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:41:00,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 19:41:00,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:00,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 19:41:00,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-12-18 19:41:00,008 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 19:41:00,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:00,065 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2023-12-18 19:41:00,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 19:41:00,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 31 [2023-12-18 19:41:00,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:00,067 INFO L225 Difference]: With dead ends: 61 [2023-12-18 19:41:00,067 INFO L226 Difference]: Without dead ends: 33 [2023-12-18 19:41:00,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 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 19:41:00,072 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:00,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 19:41:00,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-18 19:41:00,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-12-18 19:41:00,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 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 19:41:00,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-12-18 19:41:00,076 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 31 [2023-12-18 19:41:00,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:00,076 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-12-18 19:41:00,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 19:41:00,076 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-12-18 19:41:00,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-18 19:41:00,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:00,077 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] [2023-12-18 19:41:00,086 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 19:41:00,283 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 19:41:00,284 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:00,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:00,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1256814962, now seen corresponding path program 2 times [2023-12-18 19:41:00,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:00,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927846856] [2023-12-18 19:41:00,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:00,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:00,401 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 19:41:00,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:00,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927846856] [2023-12-18 19:41:00,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927846856] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:41:00,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44531198] [2023-12-18 19:41:00,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 19:41:00,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:00,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:00,408 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 19:41:00,460 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 19:41:00,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 19:41:00,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:41:00,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-18 19:41:00,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:41:00,564 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 19:41:00,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:41:00,603 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 19:41:00,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44531198] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:41:00,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:41:00,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-12-18 19:41:00,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313867075] [2023-12-18 19:41:00,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:41:00,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-18 19:41:00,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:00,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-18 19:41:00,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-18 19:41:00,607 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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 19:41:00,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:00,673 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2023-12-18 19:41:00,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 19:41:00,674 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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) Word has length 32 [2023-12-18 19:41:00,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:00,674 INFO L225 Difference]: With dead ends: 66 [2023-12-18 19:41:00,674 INFO L226 Difference]: Without dead ends: 41 [2023-12-18 19:41:00,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 58 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 19:41:00,675 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:00,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 18 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 19:41:00,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-18 19:41:00,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-12-18 19:41:00,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 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 19:41:00,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2023-12-18 19:41:00,680 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 32 [2023-12-18 19:41:00,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:00,680 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2023-12-18 19:41:00,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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 19:41:00,681 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2023-12-18 19:41:00,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-18 19:41:00,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:00,681 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 19:41:00,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 19:41:00,886 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 19:41:00,889 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:00,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:00,889 INFO L85 PathProgramCache]: Analyzing trace with hash -211220301, now seen corresponding path program 3 times [2023-12-18 19:41:00,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:00,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634498910] [2023-12-18 19:41:00,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:00,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:41:02,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:02,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634498910] [2023-12-18 19:41:02,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634498910] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:41:02,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474087019] [2023-12-18 19:41:02,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 19:41:02,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:02,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:02,956 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 19:41:02,988 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 19:41:03,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-18 19:41:03,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:41:03,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 80 conjunts are in the unsatisfiable core [2023-12-18 19:41:03,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:41:03,065 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 19:41:03,518 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:41:03,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:41:04,275 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-18 19:41:04,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474087019] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:41:04,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:41:04,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 53 [2023-12-18 19:41:04,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213468016] [2023-12-18 19:41:04,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:41:04,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-18 19:41:04,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:04,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-18 19:41:04,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2601, Unknown=0, NotChecked=0, Total=2756 [2023-12-18 19:41:04,278 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 53 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 53 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 19:41:04,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:04,870 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2023-12-18 19:41:04,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-18 19:41:04,871 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 53 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) Word has length 40 [2023-12-18 19:41:04,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:04,872 INFO L225 Difference]: With dead ends: 74 [2023-12-18 19:41:04,872 INFO L226 Difference]: Without dead ends: 70 [2023-12-18 19:41:04,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=161, Invalid=2701, Unknown=0, NotChecked=0, Total=2862 [2023-12-18 19:41:04,873 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:04,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 214 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 19:41:04,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-18 19:41:04,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2023-12-18 19:41:04,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.2388059701492538) internal successors, (83), 67 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 19:41:04,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2023-12-18 19:41:04,881 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 83 transitions. Word has length 40 [2023-12-18 19:41:04,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:04,881 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 83 transitions. [2023-12-18 19:41:04,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 53 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 19:41:04,884 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 83 transitions. [2023-12-18 19:41:04,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-18 19:41:04,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:04,885 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-18 19:41:04,892 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 19:41:05,092 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 19:41:05,093 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:05,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1346517450, now seen corresponding path program 4 times [2023-12-18 19:41:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:05,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070646819] [2023-12-18 19:41:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:05,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:05,182 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-18 19:41:05,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:05,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070646819] [2023-12-18 19:41:05,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070646819] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:41:05,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106384490] [2023-12-18 19:41:05,183 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 19:41:05,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:05,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:05,184 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 19:41:05,217 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 19:41:05,271 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 19:41:05,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:41:05,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-18 19:41:05,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:41:05,310 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-18 19:41:05,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:41:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-18 19:41:05,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106384490] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:41:05,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:41:05,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-12-18 19:41:05,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108917044] [2023-12-18 19:41:05,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:41:05,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-18 19:41:05,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:05,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-18 19:41:05,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-12-18 19:41:05,345 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 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 19:41:05,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:05,523 INFO L93 Difference]: Finished difference Result 153 states and 188 transitions. [2023-12-18 19:41:05,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-18 19:41:05,524 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 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 41 [2023-12-18 19:41:05,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:05,526 INFO L225 Difference]: With dead ends: 153 [2023-12-18 19:41:05,526 INFO L226 Difference]: Without dead ends: 87 [2023-12-18 19:41:05,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-12-18 19:41:05,527 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 71 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:05,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 35 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 19:41:05,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-18 19:41:05,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 73. [2023-12-18 19:41:05,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 72 states have internal predecessors, (87), 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 19:41:05,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 87 transitions. [2023-12-18 19:41:05,544 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 87 transitions. Word has length 41 [2023-12-18 19:41:05,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:05,544 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 87 transitions. [2023-12-18 19:41:05,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 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 19:41:05,544 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions. [2023-12-18 19:41:05,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-18 19:41:05,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:05,545 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-18 19:41:05,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-18 19:41:05,751 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 19:41:05,752 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:05,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:05,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1370623618, now seen corresponding path program 5 times [2023-12-18 19:41:05,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:05,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940329400] [2023-12-18 19:41:05,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:05,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:05,823 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-18 19:41:05,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:05,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940329400] [2023-12-18 19:41:05,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940329400] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:41:05,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348650785] [2023-12-18 19:41:05,823 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 19:41:05,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:05,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:05,824 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 19:41:05,848 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 19:41:05,891 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-18 19:41:05,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:41:05,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-18 19:41:05,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:41:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-18 19:41:05,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:41:05,992 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-18 19:41:05,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348650785] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:41:05,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:41:05,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-12-18 19:41:05,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305333404] [2023-12-18 19:41:05,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:41:05,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-18 19:41:05,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:05,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-18 19:41:05,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-12-18 19:41:05,994 INFO L87 Difference]: Start difference. First operand 73 states and 87 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 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 19:41:06,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:06,135 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2023-12-18 19:41:06,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-18 19:41:06,135 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 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 42 [2023-12-18 19:41:06,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:06,136 INFO L225 Difference]: With dead ends: 78 [2023-12-18 19:41:06,136 INFO L226 Difference]: Without dead ends: 50 [2023-12-18 19:41:06,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2023-12-18 19:41:06,137 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 33 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:06,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 27 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 19:41:06,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-18 19:41:06,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-12-18 19:41:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.183673469387755) internal successors, (58), 49 states have internal predecessors, (58), 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 19:41:06,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2023-12-18 19:41:06,140 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 42 [2023-12-18 19:41:06,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:06,141 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2023-12-18 19:41:06,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 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 19:41:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2023-12-18 19:41:06,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-18 19:41:06,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:06,141 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 19:41:06,148 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 19:41:06,346 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 19:41:06,346 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:06,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:06,347 INFO L85 PathProgramCache]: Analyzing trace with hash 2027067035, now seen corresponding path program 6 times [2023-12-18 19:41:06,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:06,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172815443] [2023-12-18 19:41:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:06,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:41:09,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:09,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172815443] [2023-12-18 19:41:09,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172815443] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:41:09,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339885832] [2023-12-18 19:41:09,661 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 19:41:09,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:09,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:09,663 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 19:41:09,696 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 19:41:09,752 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-18 19:41:09,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:41:09,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 106 conjunts are in the unsatisfiable core [2023-12-18 19:41:09,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:41:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-18 19:41:11,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:41:13,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:41:13,158 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 19:41:13,364 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-18 19:41:13,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339885832] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:41:13,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:41:13,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 30, 32] total 96 [2023-12-18 19:41:13,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751623962] [2023-12-18 19:41:13,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:41:13,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-18 19:41:13,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:13,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-18 19:41:13,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=8817, Unknown=0, NotChecked=0, Total=9120 [2023-12-18 19:41:13,367 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 96 states, 96 states have (on average 1.40625) internal successors, (135), 96 states have internal predecessors, (135), 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 19:41:20,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:20,903 INFO L93 Difference]: Finished difference Result 152 states and 187 transitions. [2023-12-18 19:41:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-18 19:41:20,905 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.40625) internal successors, (135), 96 states have internal predecessors, (135), 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 19:41:20,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:20,906 INFO L225 Difference]: With dead ends: 152 [2023-12-18 19:41:20,906 INFO L226 Difference]: Without dead ends: 146 [2023-12-18 19:41:20,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4934 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1403, Invalid=23403, Unknown=0, NotChecked=0, Total=24806 [2023-12-18 19:41:20,911 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 416 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 6817 mSolverCounterSat, 944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 7761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 944 IncrementalHoareTripleChecker+Valid, 6817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:20,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 348 Invalid, 7761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [944 Valid, 6817 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-18 19:41:20,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-18 19:41:20,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 68. [2023-12-18 19:41:20,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 67 states have internal predecessors, (80), 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 19:41:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 80 transitions. [2023-12-18 19:41:20,933 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 80 transitions. Word has length 49 [2023-12-18 19:41:20,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:20,934 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 80 transitions. [2023-12-18 19:41:20,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.40625) internal successors, (135), 96 states have internal predecessors, (135), 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 19:41:20,934 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 80 transitions. [2023-12-18 19:41:20,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-18 19:41:20,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:20,939 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-12-18 19:41:20,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-18 19:41:21,143 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 19:41:21,144 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:21,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:21,144 INFO L85 PathProgramCache]: Analyzing trace with hash 342585743, now seen corresponding path program 7 times [2023-12-18 19:41:21,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:21,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516932665] [2023-12-18 19:41:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:21,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:21,227 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-18 19:41:21,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:21,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516932665] [2023-12-18 19:41:21,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516932665] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:41:21,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262579886] [2023-12-18 19:41:21,228 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 19:41:21,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:21,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:21,229 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 19:41:21,231 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 19:41:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:21,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-18 19:41:21,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:41:21,365 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-18 19:41:21,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:41:21,413 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-18 19:41:21,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262579886] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:41:21,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:41:21,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2023-12-18 19:41:21,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540456424] [2023-12-18 19:41:21,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:41:21,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-18 19:41:21,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:21,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-18 19:41:21,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-12-18 19:41:21,416 INFO L87 Difference]: Start difference. First operand 68 states and 80 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 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 19:41:21,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:21,645 INFO L93 Difference]: Finished difference Result 186 states and 222 transitions. [2023-12-18 19:41:21,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-18 19:41:21,645 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 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 50 [2023-12-18 19:41:21,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:21,645 INFO L225 Difference]: With dead ends: 186 [2023-12-18 19:41:21,646 INFO L226 Difference]: Without dead ends: 84 [2023-12-18 19:41:21,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 87 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2023-12-18 19:41:21,648 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 71 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:21,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 38 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 19:41:21,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-18 19:41:21,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2023-12-18 19:41:21,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 72 states have internal predecessors, (84), 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 19:41:21,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2023-12-18 19:41:21,660 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 50 [2023-12-18 19:41:21,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:21,660 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2023-12-18 19:41:21,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 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 19:41:21,661 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2023-12-18 19:41:21,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-18 19:41:21,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:21,661 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2023-12-18 19:41:21,666 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 19:41:21,866 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 19:41:21,866 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:21,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:21,867 INFO L85 PathProgramCache]: Analyzing trace with hash -259756042, now seen corresponding path program 8 times [2023-12-18 19:41:21,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:21,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991792922] [2023-12-18 19:41:21,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:21,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:21,967 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-18 19:41:21,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:21,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991792922] [2023-12-18 19:41:21,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991792922] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:41:21,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445162252] [2023-12-18 19:41:21,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 19:41:21,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:21,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:21,981 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 19:41:22,010 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 19:41:22,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 19:41:22,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:41:22,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-18 19:41:22,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:41:22,125 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-18 19:41:22,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:41:22,209 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-18 19:41:22,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445162252] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:41:22,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:41:22,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2023-12-18 19:41:22,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760515736] [2023-12-18 19:41:22,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:41:22,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-18 19:41:22,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:22,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-18 19:41:22,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-12-18 19:41:22,212 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 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 19:41:22,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:22,396 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2023-12-18 19:41:22,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-18 19:41:22,396 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 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 54 [2023-12-18 19:41:22,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:22,397 INFO L225 Difference]: With dead ends: 78 [2023-12-18 19:41:22,397 INFO L226 Difference]: Without dead ends: 59 [2023-12-18 19:41:22,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 94 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-12-18 19:41:22,398 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 51 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:22,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 18 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 19:41:22,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-18 19:41:22,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-12-18 19:41:22,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 58 states have internal predecessors, (67), 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 19:41:22,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2023-12-18 19:41:22,405 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 54 [2023-12-18 19:41:22,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:22,405 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2023-12-18 19:41:22,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 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 19:41:22,406 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2023-12-18 19:41:22,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-18 19:41:22,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:22,406 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 19:41:22,414 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 19:41:22,612 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 19:41:22,612 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:22,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:22,613 INFO L85 PathProgramCache]: Analyzing trace with hash 607227571, now seen corresponding path program 9 times [2023-12-18 19:41:22,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:22,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005422354] [2023-12-18 19:41:22,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:22,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:41:26,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:26,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005422354] [2023-12-18 19:41:26,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005422354] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:41:26,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325268396] [2023-12-18 19:41:26,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 19:41:26,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:26,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:26,573 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 19:41:26,575 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 19:41:26,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-18 19:41:26,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:41:26,641 WARN L260 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 149 conjunts are in the unsatisfiable core [2023-12-18 19:41:26,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:41:30,092 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:41:30,093 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 19:41:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 80 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-18 19:41:30,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:41:34,619 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:41:34,619 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 19:41:34,840 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-18 19:41:34,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325268396] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:41:34,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:41:34,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 47, 45] total 135 [2023-12-18 19:41:34,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819465040] [2023-12-18 19:41:34,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:41:34,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2023-12-18 19:41:34,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:34,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2023-12-18 19:41:34,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=17646, Unknown=0, NotChecked=0, Total=18090 [2023-12-18 19:41:34,844 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 135 states, 135 states have (on average 1.2148148148148148) internal successors, (164), 135 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 19:41:52,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:52,246 INFO L93 Difference]: Finished difference Result 251 states and 297 transitions. [2023-12-18 19:41:52,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-12-18 19:41:52,247 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 1.2148148148148148) internal successors, (164), 135 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) Word has length 58 [2023-12-18 19:41:52,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:52,249 INFO L225 Difference]: With dead ends: 251 [2023-12-18 19:41:52,249 INFO L226 Difference]: Without dead ends: 200 [2023-12-18 19:41:52,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8361 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=2522, Invalid=44784, Unknown=0, NotChecked=0, Total=47306 [2023-12-18 19:41:52,252 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 289 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 9514 mSolverCounterSat, 1443 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 10958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1443 IncrementalHoareTripleChecker+Valid, 9514 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:52,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 753 Invalid, 10958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1443 Valid, 9514 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2023-12-18 19:41:52,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-12-18 19:41:52,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 161. [2023-12-18 19:41:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.1625) internal successors, (186), 160 states have internal predecessors, (186), 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 19:41:52,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 186 transitions. [2023-12-18 19:41:52,287 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 186 transitions. Word has length 58 [2023-12-18 19:41:52,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:52,287 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 186 transitions. [2023-12-18 19:41:52,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 1.2148148148148148) internal successors, (164), 135 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 19:41:52,287 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 186 transitions. [2023-12-18 19:41:52,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-18 19:41:52,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:52,288 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2023-12-18 19:41:52,293 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 19:41:52,492 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 19:41:52,493 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:52,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:52,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1460477103, now seen corresponding path program 10 times [2023-12-18 19:41:52,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:52,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511814493] [2023-12-18 19:41:52,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:52,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:52,627 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-18 19:41:52,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:52,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511814493] [2023-12-18 19:41:52,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511814493] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:41:52,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266325695] [2023-12-18 19:41:52,628 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 19:41:52,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:52,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:52,629 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 19:41:52,631 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 19:41:52,721 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 19:41:52,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:41:52,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-18 19:41:52,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:41:52,816 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-18 19:41:52,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:41:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-18 19:41:52,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266325695] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:41:52,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:41:52,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2023-12-18 19:41:52,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645080055] [2023-12-18 19:41:52,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:41:52,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-18 19:41:52,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:52,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-18 19:41:52,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2023-12-18 19:41:52,905 INFO L87 Difference]: Start difference. First operand 161 states and 186 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 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 19:41:53,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:53,215 INFO L93 Difference]: Finished difference Result 239 states and 275 transitions. [2023-12-18 19:41:53,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 19:41:53,215 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 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 19:41:53,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:53,215 INFO L225 Difference]: With dead ends: 239 [2023-12-18 19:41:53,215 INFO L226 Difference]: Without dead ends: 68 [2023-12-18 19:41:53,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 103 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2023-12-18 19:41:53,216 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 34 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:53,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 36 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 19:41:53,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-18 19:41:53,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-12-18 19:41:53,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.1343283582089552) internal successors, (76), 67 states have internal predecessors, (76), 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 19:41:53,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2023-12-18 19:41:53,229 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 59 [2023-12-18 19:41:53,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:53,229 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2023-12-18 19:41:53,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 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 19:41:53,229 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2023-12-18 19:41:53,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-18 19:41:53,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:53,229 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 19:41:53,236 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 19:41:53,434 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 19:41:53,434 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:53,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:53,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1861114469, now seen corresponding path program 11 times [2023-12-18 19:41:53,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:53,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399027079] [2023-12-18 19:41:53,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:53,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 4 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:41:58,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:58,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399027079] [2023-12-18 19:41:58,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399027079] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:41:58,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165699564] [2023-12-18 19:41:58,666 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 19:41:58,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:58,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:58,667 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 19:41:58,669 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 19:41:58,813 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-18 19:41:58,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:41:58,816 WARN L260 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 182 conjunts are in the unsatisfiable core [2023-12-18 19:41:58,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:41:58,965 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 19:42:02,025 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:42:02,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:42:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-18 19:42:07,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165699564] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:42:07,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:42:07,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 51, 48] total 150 [2023-12-18 19:42:07,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891129223] [2023-12-18 19:42:07,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:42:07,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 150 states [2023-12-18 19:42:07,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:42:07,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2023-12-18 19:42:07,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=21816, Unknown=0, NotChecked=0, Total=22350 [2023-12-18 19:42:07,115 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 150 states, 150 states have (on average 1.2466666666666666) internal successors, (187), 150 states have internal predecessors, (187), 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 19:42:22,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:42:22,725 INFO L93 Difference]: Finished difference Result 251 states and 288 transitions. [2023-12-18 19:42:22,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-12-18 19:42:22,725 INFO L78 Accepts]: Start accepts. Automaton has has 150 states, 150 states have (on average 1.2466666666666666) internal successors, (187), 150 states have internal predecessors, (187), 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 67 [2023-12-18 19:42:22,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:42:22,726 INFO L225 Difference]: With dead ends: 251 [2023-12-18 19:42:22,726 INFO L226 Difference]: Without dead ends: 195 [2023-12-18 19:42:22,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13390 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=2144, Invalid=55216, Unknown=0, NotChecked=0, Total=57360 [2023-12-18 19:42:22,729 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 180 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 10092 mSolverCounterSat, 657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 10749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 657 IncrementalHoareTripleChecker+Valid, 10092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-18 19:42:22,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 595 Invalid, 10749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [657 Valid, 10092 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-18 19:42:22,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-12-18 19:42:22,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 131. [2023-12-18 19:42:22,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.1307692307692307) internal successors, (147), 130 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 19:42:22,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 147 transitions. [2023-12-18 19:42:22,761 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 147 transitions. Word has length 67 [2023-12-18 19:42:22,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:42:22,761 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 147 transitions. [2023-12-18 19:42:22,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 150 states, 150 states have (on average 1.2466666666666666) internal successors, (187), 150 states have internal predecessors, (187), 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 19:42:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 147 transitions. [2023-12-18 19:42:22,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-18 19:42:22,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:42:22,762 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2023-12-18 19:42:22,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-18 19:42:22,967 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 19:42:22,967 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:42:22,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:42:22,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1074864689, now seen corresponding path program 12 times [2023-12-18 19:42:22,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:42:22,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465543879] [2023-12-18 19:42:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:42:22,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:42:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:42:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-18 19:42:23,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:42:23,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465543879] [2023-12-18 19:42:23,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465543879] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:42:23,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158289277] [2023-12-18 19:42:23,095 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 19:42:23,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:42:23,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:42:23,096 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 19:42:23,098 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 19:42:23,193 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-18 19:42:23,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:42:23,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-18 19:42:23,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:42:23,275 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-18 19:42:23,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:42:23,354 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-18 19:42:23,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158289277] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:42:23,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:42:23,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2023-12-18 19:42:23,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012022182] [2023-12-18 19:42:23,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:42:23,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-18 19:42:23,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:42:23,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-18 19:42:23,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2023-12-18 19:42:23,355 INFO L87 Difference]: Start difference. First operand 131 states and 147 transitions. Second operand has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 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 19:42:23,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:42:23,666 INFO L93 Difference]: Finished difference Result 237 states and 268 transitions. [2023-12-18 19:42:23,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-18 19:42:23,666 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 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 68 [2023-12-18 19:42:23,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:42:23,667 INFO L225 Difference]: With dead ends: 237 [2023-12-18 19:42:23,667 INFO L226 Difference]: Without dead ends: 108 [2023-12-18 19:42:23,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 117 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2023-12-18 19:42:23,668 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 116 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 19:42:23,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 35 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 19:42:23,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-18 19:42:23,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 97. [2023-12-18 19:42:23,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.125) internal successors, (108), 96 states have internal predecessors, (108), 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 19:42:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2023-12-18 19:42:23,695 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 68 [2023-12-18 19:42:23,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:42:23,696 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2023-12-18 19:42:23,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 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 19:42:23,696 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2023-12-18 19:42:23,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-18 19:42:23,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:42:23,696 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2023-12-18 19:42:23,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-18 19:42:23,901 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 19:42:23,901 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:42:23,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:42:23,901 INFO L85 PathProgramCache]: Analyzing trace with hash 444902326, now seen corresponding path program 13 times [2023-12-18 19:42:23,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:42:23,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767441712] [2023-12-18 19:42:23,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:42:23,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:42:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:42:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-12-18 19:42:24,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:42:24,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767441712] [2023-12-18 19:42:24,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767441712] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:42:24,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029344300] [2023-12-18 19:42:24,096 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 19:42:24,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:42:24,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:42:24,097 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 19:42:24,116 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 19:42:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:42:24,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-18 19:42:24,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:42:24,270 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-12-18 19:42:24,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:42:24,386 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-12-18 19:42:24,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029344300] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:42:24,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:42:24,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2023-12-18 19:42:24,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750237752] [2023-12-18 19:42:24,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:42:24,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-18 19:42:24,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:42:24,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-18 19:42:24,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2023-12-18 19:42:24,388 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 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 19:42:24,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:42:24,628 INFO L93 Difference]: Finished difference Result 102 states and 113 transitions. [2023-12-18 19:42:24,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 19:42:24,629 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 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 72 [2023-12-18 19:42:24,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:42:24,629 INFO L225 Difference]: With dead ends: 102 [2023-12-18 19:42:24,629 INFO L226 Difference]: Without dead ends: 77 [2023-12-18 19:42:24,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 124 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2023-12-18 19:42:24,630 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 57 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 19:42:24,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 24 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 19:42:24,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-18 19:42:24,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-12-18 19:42:24,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.118421052631579) internal successors, (85), 76 states have internal predecessors, (85), 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 19:42:24,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2023-12-18 19:42:24,649 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 72 [2023-12-18 19:42:24,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:42:24,649 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2023-12-18 19:42:24,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 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 19:42:24,649 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2023-12-18 19:42:24,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-18 19:42:24,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:42:24,650 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 19:42:24,667 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 19:42:24,854 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 19:42:24,854 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:42:24,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:42:24,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1565037747, now seen corresponding path program 14 times [2023-12-18 19:42:24,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:42:24,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206663409] [2023-12-18 19:42:24,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:42:24,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:42:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:42:32,259 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 6 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:42:32,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:42:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206663409] [2023-12-18 19:42:32,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206663409] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:42:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899078786] [2023-12-18 19:42:32,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 19:42:32,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:42:32,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:42:32,260 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 19:42:32,262 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 19:42:32,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 19:42:32,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:42:32,363 WARN L260 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 216 conjunts are in the unsatisfiable core [2023-12-18 19:42:32,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:42:32,548 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 19:42:36,706 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:42:36,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:42:42,567 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-18 19:42:42,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899078786] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:42:42,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:42:42,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 60, 56] total 176 [2023-12-18 19:42:42,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652128131] [2023-12-18 19:42:42,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:42:42,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 176 states [2023-12-18 19:42:42,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:42:42,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2023-12-18 19:42:42,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=726, Invalid=30074, Unknown=0, NotChecked=0, Total=30800 [2023-12-18 19:42:42,571 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 176 states, 176 states have (on average 1.2102272727272727) internal successors, (213), 176 states have internal predecessors, (213), 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 19:43:00,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:43:00,021 INFO L93 Difference]: Finished difference Result 274 states and 311 transitions. [2023-12-18 19:43:00,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2023-12-18 19:43:00,022 INFO L78 Accepts]: Start accepts. Automaton has has 176 states, 176 states have (on average 1.2102272727272727) internal successors, (213), 176 states have internal predecessors, (213), 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 76 [2023-12-18 19:43:00,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:43:00,022 INFO L225 Difference]: With dead ends: 274 [2023-12-18 19:43:00,022 INFO L226 Difference]: Without dead ends: 211 [2023-12-18 19:43:00,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21555 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=2388, Invalid=71324, Unknown=0, NotChecked=0, Total=73712 [2023-12-18 19:43:00,025 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 156 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 11427 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 12087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 11427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-18 19:43:00,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 573 Invalid, 12087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 11427 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-18 19:43:00,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-12-18 19:43:00,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 148. [2023-12-18 19:43:00,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.1156462585034013) internal successors, (164), 147 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 19:43:00,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 164 transitions. [2023-12-18 19:43:00,087 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 164 transitions. Word has length 76 [2023-12-18 19:43:00,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:43:00,088 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 164 transitions. [2023-12-18 19:43:00,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 176 states, 176 states have (on average 1.2102272727272727) internal successors, (213), 176 states have internal predecessors, (213), 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 19:43:00,088 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 164 transitions. [2023-12-18 19:43:00,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-18 19:43:00,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:43:00,089 INFO L195 NwaCegarLoop]: trace histogram [7, 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] [2023-12-18 19:43:00,094 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 19:43:00,294 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 19:43:00,294 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:43:00,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:43:00,294 INFO L85 PathProgramCache]: Analyzing trace with hash -784489199, now seen corresponding path program 15 times [2023-12-18 19:43:00,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:43:00,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392039874] [2023-12-18 19:43:00,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:43:00,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:43:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:43:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-12-18 19:43:00,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:43:00,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392039874] [2023-12-18 19:43:00,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392039874] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:43:00,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916975972] [2023-12-18 19:43:00,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 19:43:00,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:43:00,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:43:00,538 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 19:43:00,584 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 19:43:00,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-18 19:43:00,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:43:00,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-18 19:43:00,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:43:00,797 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-12-18 19:43:00,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:43:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-12-18 19:43:00,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916975972] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:43:00,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:43:00,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2023-12-18 19:43:00,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542383518] [2023-12-18 19:43:00,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:43:00,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-18 19:43:00,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:43:00,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-18 19:43:00,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2023-12-18 19:43:00,912 INFO L87 Difference]: Start difference. First operand 148 states and 164 transitions. Second operand has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 26 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 19:43:01,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:43:01,245 INFO L93 Difference]: Finished difference Result 266 states and 297 transitions. [2023-12-18 19:43:01,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-18 19:43:01,245 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 26 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 77 [2023-12-18 19:43:01,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:43:01,246 INFO L225 Difference]: With dead ends: 266 [2023-12-18 19:43:01,246 INFO L226 Difference]: Without dead ends: 120 [2023-12-18 19:43:01,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 132 SyntacticMatches, 13 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2023-12-18 19:43:01,247 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 109 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 19:43:01,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 47 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 19:43:01,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-18 19:43:01,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 109. [2023-12-18 19:43:01,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.1111111111111112) internal successors, (120), 108 states have internal predecessors, (120), 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 19:43:01,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2023-12-18 19:43:01,307 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 77 [2023-12-18 19:43:01,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:43:01,307 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2023-12-18 19:43:01,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 26 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 19:43:01,307 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2023-12-18 19:43:01,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-18 19:43:01,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:43:01,308 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 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] [2023-12-18 19:43:01,315 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 19:43:01,513 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 19:43:01,514 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:43:01,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:43:01,514 INFO L85 PathProgramCache]: Analyzing trace with hash 192919928, now seen corresponding path program 16 times [2023-12-18 19:43:01,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:43:01,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441378258] [2023-12-18 19:43:01,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:43:01,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:43:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:43:01,692 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-12-18 19:43:01,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:43:01,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441378258] [2023-12-18 19:43:01,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441378258] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:43:01,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373613204] [2023-12-18 19:43:01,692 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 19:43:01,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:43:01,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:43:01,704 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 19:43:01,705 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 19:43:01,803 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 19:43:01,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:43:01,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-18 19:43:01,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:43:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-12-18 19:43:01,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:43:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-12-18 19:43:02,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373613204] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:43:02,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:43:02,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2023-12-18 19:43:02,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527827628] [2023-12-18 19:43:02,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:43:02,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-18 19:43:02,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:43:02,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-18 19:43:02,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2023-12-18 19:43:02,045 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 26 states have internal predecessors, (63), 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 19:43:02,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:43:02,370 INFO L93 Difference]: Finished difference Result 114 states and 125 transitions. [2023-12-18 19:43:02,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-18 19:43:02,370 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 26 states have internal predecessors, (63), 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 19:43:02,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:43:02,371 INFO L225 Difference]: With dead ends: 114 [2023-12-18 19:43:02,371 INFO L226 Difference]: Without dead ends: 86 [2023-12-18 19:43:02,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 140 SyntacticMatches, 14 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=909, Unknown=0, NotChecked=0, Total=1190 [2023-12-18 19:43:02,371 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 54 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 19:43:02,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 27 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 19:43:02,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-18 19:43:02,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-12-18 19:43:02,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1058823529411765) internal successors, (94), 85 states have internal predecessors, (94), 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 19:43:02,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2023-12-18 19:43:02,397 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 81 [2023-12-18 19:43:02,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:43:02,398 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2023-12-18 19:43:02,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 26 states have internal predecessors, (63), 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 19:43:02,398 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2023-12-18 19:43:02,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-18 19:43:02,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:43:02,398 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 19:43:02,405 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 19:43:02,603 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 19:43:02,604 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:43:02,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:43:02,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1056224411, now seen corresponding path program 17 times [2023-12-18 19:43:02,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:43:02,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125688951] [2023-12-18 19:43:02,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:43:02,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:43:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:43:11,522 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 16 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:43:11,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:43:11,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125688951] [2023-12-18 19:43:11,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125688951] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:43:11,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805287164] [2023-12-18 19:43:11,522 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 19:43:11,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:43:11,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:43:11,523 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 19:43:11,524 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 19:43:11,744 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-18 19:43:11,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:43:11,748 WARN L260 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 250 conjunts are in the unsatisfiable core [2023-12-18 19:43:11,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:43:12,098 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 19:43:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:43:17,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:43:28,369 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-18 19:43:28,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805287164] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:43:28,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:43:28,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 69, 64] total 202 [2023-12-18 19:43:28,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900691409] [2023-12-18 19:43:28,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:43:28,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 202 states [2023-12-18 19:43:28,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:43:28,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2023-12-18 19:43:28,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=757, Invalid=39845, Unknown=0, NotChecked=0, Total=40602 [2023-12-18 19:43:28,373 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand has 202 states, 202 states have (on average 1.183168316831683) internal successors, (239), 202 states have internal predecessors, (239), 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 19:43:50,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:43:50,974 INFO L93 Difference]: Finished difference Result 311 states and 347 transitions. [2023-12-18 19:43:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2023-12-18 19:43:50,975 INFO L78 Accepts]: Start accepts. Automaton has has 202 states, 202 states have (on average 1.183168316831683) internal successors, (239), 202 states have internal predecessors, (239), 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 85 [2023-12-18 19:43:50,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:43:50,975 INFO L225 Difference]: With dead ends: 311 [2023-12-18 19:43:50,975 INFO L226 Difference]: Without dead ends: 241 [2023-12-18 19:43:50,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20363 ImplicationChecksByTransitivity, 33.1s TimeCoverageRelationStatistics Valid=2394, Invalid=81416, Unknown=0, NotChecked=0, Total=83810 [2023-12-18 19:43:50,978 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 130 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 16069 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 16613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 16069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-18 19:43:50,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 727 Invalid, 16613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 16069 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-18 19:43:50,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-18 19:43:51,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 165. [2023-12-18 19:43:51,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.103658536585366) internal successors, (181), 164 states have internal predecessors, (181), 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 19:43:51,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 181 transitions. [2023-12-18 19:43:51,038 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 181 transitions. Word has length 85 [2023-12-18 19:43:51,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:43:51,038 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 181 transitions. [2023-12-18 19:43:51,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 202 states, 202 states have (on average 1.183168316831683) internal successors, (239), 202 states have internal predecessors, (239), 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 19:43:51,039 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 181 transitions. [2023-12-18 19:43:51,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-18 19:43:51,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:43:51,039 INFO L195 NwaCegarLoop]: trace histogram [8, 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] [2023-12-18 19:43:51,045 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 19:43:51,243 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 19:43:51,244 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:43:51,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:43:51,244 INFO L85 PathProgramCache]: Analyzing trace with hash 821770767, now seen corresponding path program 18 times [2023-12-18 19:43:51,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:43:51,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199278509] [2023-12-18 19:43:51,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:43:51,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:43:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:43:51,427 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-18 19:43:51,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:43:51,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199278509] [2023-12-18 19:43:51,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199278509] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:43:51,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013715187] [2023-12-18 19:43:51,428 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 19:43:51,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:43:51,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:43:51,429 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 19:43:51,431 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 19:43:51,566 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-18 19:43:51,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:43:51,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-18 19:43:51,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:43:51,733 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-18 19:43:51,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:43:51,889 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-18 19:43:51,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013715187] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:43:51,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:43:51,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2023-12-18 19:43:51,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644313932] [2023-12-18 19:43:51,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:43:51,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-18 19:43:51,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:43:51,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-18 19:43:51,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2023-12-18 19:43:51,891 INFO L87 Difference]: Start difference. First operand 165 states and 181 transitions. Second operand has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 29 states have internal predecessors, (57), 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 19:43:52,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:43:52,357 INFO L93 Difference]: Finished difference Result 295 states and 326 transitions. [2023-12-18 19:43:52,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-18 19:43:52,357 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 29 states have internal predecessors, (57), 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 86 [2023-12-18 19:43:52,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:43:52,358 INFO L225 Difference]: With dead ends: 295 [2023-12-18 19:43:52,358 INFO L226 Difference]: Without dead ends: 132 [2023-12-18 19:43:52,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 147 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 19:43:52,359 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 115 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 19:43:52,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 41 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 19:43:52,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-18 19:43:52,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 121. [2023-12-18 19:43:52,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.1) internal successors, (132), 120 states have internal predecessors, (132), 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 19:43:52,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2023-12-18 19:43:52,406 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 86 [2023-12-18 19:43:52,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:43:52,406 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2023-12-18 19:43:52,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 29 states have internal predecessors, (57), 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 19:43:52,406 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2023-12-18 19:43:52,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-18 19:43:52,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:43:52,406 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 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] [2023-12-18 19:43:52,414 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 19:43:52,614 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 19:43:52,614 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:43:52,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:43:52,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1053366134, now seen corresponding path program 19 times [2023-12-18 19:43:52,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:43:52,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246005803] [2023-12-18 19:43:52,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:43:52,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:43:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:43:52,808 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-12-18 19:43:52,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:43:52,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246005803] [2023-12-18 19:43:52,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246005803] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:43:52,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642411714] [2023-12-18 19:43:52,808 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 19:43:52,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:43:52,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:43:52,810 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 19:43:52,814 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 19:43:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:43:52,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-18 19:43:52,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:43:53,066 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-12-18 19:43:53,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:43:53,213 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-12-18 19:43:53,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642411714] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:43:53,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:43:53,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2023-12-18 19:43:53,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185175401] [2023-12-18 19:43:53,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:43:53,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-18 19:43:53,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:43:53,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-18 19:43:53,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2023-12-18 19:43:53,214 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 29 states have internal predecessors, (57), 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 19:43:53,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:43:53,628 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2023-12-18 19:43:53,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-18 19:43:53,629 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 29 states have internal predecessors, (57), 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 90 [2023-12-18 19:43:53,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:43:53,629 INFO L225 Difference]: With dead ends: 126 [2023-12-18 19:43:53,629 INFO L226 Difference]: Without dead ends: 95 [2023-12-18 19:43:53,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 154 SyntacticMatches, 16 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=346, Invalid=1136, Unknown=0, NotChecked=0, Total=1482 [2023-12-18 19:43:53,630 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 42 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 19:43:53,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 27 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 19:43:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-18 19:43:53,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-12-18 19:43:53,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.0957446808510638) internal successors, (103), 94 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 19:43:53,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2023-12-18 19:43:53,664 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 90 [2023-12-18 19:43:53,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:43:53,664 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2023-12-18 19:43:53,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 29 states have internal predecessors, (57), 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 19:43:53,664 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2023-12-18 19:43:53,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-18 19:43:53,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:43:53,665 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 19:43:53,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-18 19:43:53,869 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 19:43:53,870 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:43:53,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:43:53,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1733944653, now seen corresponding path program 20 times [2023-12-18 19:43:53,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:43:53,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510446038] [2023-12-18 19:43:53,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:43:53,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:43:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:44:05,863 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 32 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:44:05,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:44:05,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510446038] [2023-12-18 19:44:05,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510446038] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:44:05,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622115992] [2023-12-18 19:44:05,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 19:44:05,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:44:05,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:44:05,870 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 19:44:05,872 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 19:44:05,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 19:44:05,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:44:05,999 WARN L260 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 284 conjunts are in the unsatisfiable core [2023-12-18 19:44:06,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:44:06,422 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 19:44:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:44:13,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:44:26,716 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-18 19:44:26,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622115992] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:44:26,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:44:26,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 78, 72] total 228 [2023-12-18 19:44:26,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212391358] [2023-12-18 19:44:26,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:44:26,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 228 states [2023-12-18 19:44:26,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:44:26,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2023-12-18 19:44:26,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=887, Invalid=50869, Unknown=0, NotChecked=0, Total=51756 [2023-12-18 19:44:26,734 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand has 228 states, 228 states have (on average 1.162280701754386) internal successors, (265), 228 states have internal predecessors, (265), 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 19:45:08,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:45:08,551 INFO L93 Difference]: Finished difference Result 277 states and 312 transitions. [2023-12-18 19:45:08,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2023-12-18 19:45:08,560 INFO L78 Accepts]: Start accepts. Automaton has has 228 states, 228 states have (on average 1.162280701754386) internal successors, (265), 228 states have internal predecessors, (265), 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 94 [2023-12-18 19:45:08,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:45:08,561 INFO L225 Difference]: With dead ends: 277 [2023-12-18 19:45:08,561 INFO L226 Difference]: Without dead ends: 271 [2023-12-18 19:45:08,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 357 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34054 ImplicationChecksByTransitivity, 51.3s TimeCoverageRelationStatistics Valid=5094, Invalid=123428, Unknown=0, NotChecked=0, Total=128522 [2023-12-18 19:45:08,565 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 655 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 24953 mSolverCounterSat, 2810 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 27763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2810 IncrementalHoareTripleChecker+Valid, 24953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2023-12-18 19:45:08,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 440 Invalid, 27763 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2810 Valid, 24953 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2023-12-18 19:45:08,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-12-18 19:45:08,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 128. [2023-12-18 19:45:08,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.1023622047244095) internal successors, (140), 127 states have internal predecessors, (140), 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 19:45:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 140 transitions. [2023-12-18 19:45:08,629 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 140 transitions. Word has length 94 [2023-12-18 19:45:08,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:45:08,629 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 140 transitions. [2023-12-18 19:45:08,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 228 states, 228 states have (on average 1.162280701754386) internal successors, (265), 228 states have internal predecessors, (265), 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 19:45:08,629 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 140 transitions. [2023-12-18 19:45:08,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-18 19:45:08,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:45:08,630 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-12-18 19:45:08,635 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 19:45:08,832 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 19:45:08,832 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:45:08,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:45:08,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2125559505, now seen corresponding path program 21 times [2023-12-18 19:45:08,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:45:08,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605376569] [2023-12-18 19:45:08,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:45:08,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:45:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:45:09,124 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 37 proven. 44 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-12-18 19:45:09,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:45:09,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605376569] [2023-12-18 19:45:09,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605376569] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:45:09,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094455455] [2023-12-18 19:45:09,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 19:45:09,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:45:09,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:45:09,126 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 19:45:09,130 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 19:45:09,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-18 19:45:09,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:45:09,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-18 19:45:09,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:45:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 36 proven. 45 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-12-18 19:45:09,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:45:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 36 proven. 45 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-12-18 19:45:09,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094455455] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:45:09,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:45:09,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 49 [2023-12-18 19:45:09,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743498886] [2023-12-18 19:45:09,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:45:09,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-18 19:45:09,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:45:09,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-18 19:45:09,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=1975, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 19:45:09,732 INFO L87 Difference]: Start difference. First operand 128 states and 140 transitions. Second operand has 49 states, 49 states have (on average 1.8775510204081634) internal successors, (92), 49 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 19:45:10,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:45:10,888 INFO L93 Difference]: Finished difference Result 292 states and 327 transitions. [2023-12-18 19:45:10,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-18 19:45:10,892 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.8775510204081634) internal successors, (92), 49 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) Word has length 95 [2023-12-18 19:45:10,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:45:10,892 INFO L225 Difference]: With dead ends: 292 [2023-12-18 19:45:10,892 INFO L226 Difference]: Without dead ends: 104 [2023-12-18 19:45:10,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 171 SyntacticMatches, 10 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2252 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=885, Invalid=4967, Unknown=0, NotChecked=0, Total=5852 [2023-12-18 19:45:10,894 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 176 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 975 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 2960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 975 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 19:45:10,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 63 Invalid, 2960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [975 Valid, 1985 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 19:45:10,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-18 19:45:10,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-12-18 19:45:10,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.087378640776699) internal successors, (112), 103 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 19:45:10,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2023-12-18 19:45:10,944 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 95 [2023-12-18 19:45:10,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:45:10,944 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2023-12-18 19:45:10,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.8775510204081634) internal successors, (92), 49 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 19:45:10,945 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2023-12-18 19:45:10,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-18 19:45:10,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:45:10,945 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 19:45:10,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-18 19:45:11,151 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 19:45:11,152 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:45:11,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:45:11,152 INFO L85 PathProgramCache]: Analyzing trace with hash -796671077, now seen corresponding path program 22 times [2023-12-18 19:45:11,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:45:11,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603508324] [2023-12-18 19:45:11,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:45:11,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:45:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:45:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 57 proven. 348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:45:26,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:45:26,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603508324] [2023-12-18 19:45:26,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603508324] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:45:26,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550787325] [2023-12-18 19:45:26,598 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 19:45:26,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:45:26,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:45:26,599 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 19:45:26,601 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 19:45:26,776 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 19:45:26,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:45:26,781 WARN L260 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 298 conjunts are in the unsatisfiable core [2023-12-18 19:45:26,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:45:35,726 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-18 19:45:35,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:45:53,270 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:45:53,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 154 treesize of output 743 [2023-12-18 19:46:09,843 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-18 19:46:09,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550787325] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:46:09,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:46:09,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 78, 80] total 246 [2023-12-18 19:46:09,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144913076] [2023-12-18 19:46:09,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:46:09,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 246 states [2023-12-18 19:46:09,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:46:09,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 246 interpolants. [2023-12-18 19:46:09,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1012, Invalid=59258, Unknown=0, NotChecked=0, Total=60270 [2023-12-18 19:46:09,847 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand has 246 states, 246 states have (on average 1.1585365853658536) internal successors, (285), 246 states have internal predecessors, (285), 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 19:47:04,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:47:04,019 INFO L93 Difference]: Finished difference Result 302 states and 337 transitions. [2023-12-18 19:47:04,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2023-12-18 19:47:04,021 INFO L78 Accepts]: Start accepts. Automaton has has 246 states, 246 states have (on average 1.1585365853658536) internal successors, (285), 246 states have internal predecessors, (285), 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 19:47:04,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:47:04,023 INFO L225 Difference]: With dead ends: 302 [2023-12-18 19:47:04,023 INFO L226 Difference]: Without dead ends: 296 [2023-12-18 19:47:04,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40655 ImplicationChecksByTransitivity, 65.0s TimeCoverageRelationStatistics Valid=6001, Invalid=146489, Unknown=0, NotChecked=0, Total=152490 [2023-12-18 19:47:04,030 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 611 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 31989 mSolverCounterSat, 2857 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 34846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2857 IncrementalHoareTripleChecker+Valid, 31989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2023-12-18 19:47:04,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 484 Invalid, 34846 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2857 Valid, 31989 Invalid, 0 Unknown, 0 Unchecked, 18.3s Time] [2023-12-18 19:47:04,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-12-18 19:47:04,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 140. [2023-12-18 19:47:04,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.0935251798561152) internal successors, (152), 139 states have internal predecessors, (152), 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 19:47:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 152 transitions. [2023-12-18 19:47:04,112 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 152 transitions. Word has length 103 [2023-12-18 19:47:04,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:47:04,112 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 152 transitions. [2023-12-18 19:47:04,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 246 states, 246 states have (on average 1.1585365853658536) internal successors, (285), 246 states have internal predecessors, (285), 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 19:47:04,112 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 152 transitions. [2023-12-18 19:47:04,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-18 19:47:04,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:47:04,113 INFO L195 NwaCegarLoop]: trace histogram [10, 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] [2023-12-18 19:47:04,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-18 19:47:04,318 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 19:47:04,319 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:47:04,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:47:04,319 INFO L85 PathProgramCache]: Analyzing trace with hash -182155697, now seen corresponding path program 23 times [2023-12-18 19:47:04,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:47:04,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383515602] [2023-12-18 19:47:04,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:47:04,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:47:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:47:04,578 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 46 proven. 54 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-12-18 19:47:04,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:47:04,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383515602] [2023-12-18 19:47:04,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383515602] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:47:04,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940804830] [2023-12-18 19:47:04,579 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 19:47:04,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:47:04,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:47:04,580 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 19:47:04,581 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 19:47:04,941 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-18 19:47:04,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:47:04,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-18 19:47:04,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:47:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-12-18 19:47:05,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:47:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-12-18 19:47:05,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940804830] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:47:05,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:47:05,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2023-12-18 19:47:05,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826439113] [2023-12-18 19:47:05,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:47:05,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-18 19:47:05,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:47:05,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-18 19:47:05,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2023-12-18 19:47:05,325 INFO L87 Difference]: Start difference. First operand 140 states and 152 transitions. Second operand has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 states have internal predecessors, (78), 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 19:47:05,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:47:05,986 INFO L93 Difference]: Finished difference Result 366 states and 402 transitions. [2023-12-18 19:47:05,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-18 19:47:05,986 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 states have internal predecessors, (78), 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 19:47:05,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:47:05,987 INFO L225 Difference]: With dead ends: 366 [2023-12-18 19:47:05,987 INFO L226 Difference]: Without dead ends: 156 [2023-12-18 19:47:05,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 19 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=486, Invalid=1494, Unknown=0, NotChecked=0, Total=1980 [2023-12-18 19:47:05,988 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 107 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 19:47:05,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 44 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 19:47:05,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-12-18 19:47:06,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 145. [2023-12-18 19:47:06,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.0833333333333333) internal successors, (156), 144 states have internal predecessors, (156), 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 19:47:06,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 156 transitions. [2023-12-18 19:47:06,071 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 156 transitions. Word has length 104 [2023-12-18 19:47:06,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:47:06,071 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 156 transitions. [2023-12-18 19:47:06,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 states have internal predecessors, (78), 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 19:47:06,071 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 156 transitions. [2023-12-18 19:47:06,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-18 19:47:06,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:47:06,071 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 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] [2023-12-18 19:47:06,080 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 19:47:06,280 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 19:47:06,281 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:47:06,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:47:06,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1107669814, now seen corresponding path program 24 times [2023-12-18 19:47:06,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:47:06,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014688958] [2023-12-18 19:47:06,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:47:06,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:47:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:47:06,579 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2023-12-18 19:47:06,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:47:06,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014688958] [2023-12-18 19:47:06,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014688958] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:47:06,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063772904] [2023-12-18 19:47:06,580 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 19:47:06,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:47:06,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:47:06,581 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:47:06,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-18 19:47:06,780 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-12-18 19:47:06,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:47:06,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-18 19:47:06,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:47:06,953 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2023-12-18 19:47:06,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:47:07,128 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2023-12-18 19:47:07,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063772904] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:47:07,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:47:07,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2023-12-18 19:47:07,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397123281] [2023-12-18 19:47:07,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:47:07,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-18 19:47:07,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:47:07,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-18 19:47:07,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2023-12-18 19:47:07,130 INFO L87 Difference]: Start difference. First operand 145 states and 156 transitions. Second operand has 35 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 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 19:47:07,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:47:07,609 INFO L93 Difference]: Finished difference Result 150 states and 161 transitions. [2023-12-18 19:47:07,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-18 19:47:07,609 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 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 108 [2023-12-18 19:47:07,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:47:07,610 INFO L225 Difference]: With dead ends: 150 [2023-12-18 19:47:07,610 INFO L226 Difference]: Without dead ends: 113 [2023-12-18 19:47:07,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 184 SyntacticMatches, 20 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=497, Invalid=1665, Unknown=0, NotChecked=0, Total=2162 [2023-12-18 19:47:07,610 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 19:47:07,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 27 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 19:47:07,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-18 19:47:07,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-12-18 19:47:07,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0803571428571428) internal successors, (121), 112 states have internal predecessors, (121), 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 19:47:07,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2023-12-18 19:47:07,674 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 108 [2023-12-18 19:47:07,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:47:07,674 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 121 transitions. [2023-12-18 19:47:07,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 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 19:47:07,674 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 121 transitions. [2023-12-18 19:47:07,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-18 19:47:07,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:47:07,674 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 19:47:07,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-18 19:47:07,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-18 19:47:07,877 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:47:07,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:47:07,877 INFO L85 PathProgramCache]: Analyzing trace with hash -599646029, now seen corresponding path program 25 times [2023-12-18 19:47:07,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:47:07,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572615346] [2023-12-18 19:47:07,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:47:07,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:47:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:47:28,033 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 42 proven. 453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:47:28,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:47:28,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572615346] [2023-12-18 19:47:28,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572615346] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:47:28,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467454457] [2023-12-18 19:47:28,033 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 19:47:28,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:47:28,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:47:28,034 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:47:28,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-18 19:47:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:47:28,194 WARN L260 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 352 conjunts are in the unsatisfiable core [2023-12-18 19:47:28,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:47:28,878 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 19:47:41,186 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 19:47:41,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:48:06,255 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 440 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-18 19:48:06,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467454457] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:48:06,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:48:06,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 96, 88] total 280 [2023-12-18 19:48:06,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422521532] [2023-12-18 19:48:06,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:48:06,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 280 states [2023-12-18 19:48:06,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:48:06,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 280 interpolants. [2023-12-18 19:48:06,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1091, Invalid=77029, Unknown=0, NotChecked=0, Total=78120 [2023-12-18 19:48:06,268 INFO L87 Difference]: Start difference. First operand 113 states and 121 transitions. Second operand has 280 states, 280 states have (on average 1.1321428571428571) internal successors, (317), 280 states have internal predecessors, (317), 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 19:49:21,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:49:21,267 INFO L93 Difference]: Finished difference Result 327 states and 362 transitions. [2023-12-18 19:49:21,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2023-12-18 19:49:21,268 INFO L78 Accepts]: Start accepts. Automaton has has 280 states, 280 states have (on average 1.1321428571428571) internal successors, (317), 280 states have internal predecessors, (317), 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 112 [2023-12-18 19:49:21,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:49:21,269 INFO L225 Difference]: With dead ends: 327 [2023-12-18 19:49:21,269 INFO L226 Difference]: Without dead ends: 321 [2023-12-18 19:49:21,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 435 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47095 ImplicationChecksByTransitivity, 93.0s TimeCoverageRelationStatistics Valid=6749, Invalid=183783, Unknown=0, NotChecked=0, Total=190532 [2023-12-18 19:49:21,276 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 573 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 41058 mSolverCounterSat, 3170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 44228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3170 IncrementalHoareTripleChecker+Valid, 41058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2023-12-18 19:49:21,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 569 Invalid, 44228 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3170 Valid, 41058 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time] [2023-12-18 19:49:21,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-12-18 19:49:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 152. [2023-12-18 19:49:21,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.086092715231788) internal successors, (164), 151 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 19:49:21,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 164 transitions. [2023-12-18 19:49:21,376 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 164 transitions. Word has length 112 [2023-12-18 19:49:21,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:49:21,376 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 164 transitions. [2023-12-18 19:49:21,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 280 states, 280 states have (on average 1.1321428571428571) internal successors, (317), 280 states have internal predecessors, (317), 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 19:49:21,377 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 164 transitions. [2023-12-18 19:49:21,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-18 19:49:21,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:49:21,377 INFO L195 NwaCegarLoop]: trace histogram [11, 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] [2023-12-18 19:49:21,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-18 19:49:21,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-18 19:49:21,583 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:49:21,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:49:21,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1527097199, now seen corresponding path program 26 times [2023-12-18 19:49:21,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:49:21,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264104002] [2023-12-18 19:49:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:21,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:49:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:49:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 56 proven. 65 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-12-18 19:49:21,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:49:21,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264104002] [2023-12-18 19:49:21,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264104002] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:49:21,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635878880] [2023-12-18 19:49:21,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 19:49:21,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:49:21,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:49:21,933 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:49:21,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-18 19:49:22,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 19:49:22,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:49:22,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-18 19:49:22,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:49:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-12-18 19:49:22,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:49:22,483 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-12-18 19:49:22,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635878880] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:49:22,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:49:22,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2023-12-18 19:49:22,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027847741] [2023-12-18 19:49:22,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:49:22,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-18 19:49:22,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:49:22,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-18 19:49:22,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2023-12-18 19:49:22,485 INFO L87 Difference]: Start difference. First operand 152 states and 164 transitions. Second operand has 38 states, 38 states have (on average 1.736842105263158) internal successors, (66), 38 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 19:49:23,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:49:23,268 INFO L93 Difference]: Finished difference Result 396 states and 432 transitions. [2023-12-18 19:49:23,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-18 19:49:23,269 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.736842105263158) internal successors, (66), 38 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 113 [2023-12-18 19:49:23,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:49:23,269 INFO L225 Difference]: With dead ends: 396 [2023-12-18 19:49:23,269 INFO L226 Difference]: Without dead ends: 168 [2023-12-18 19:49:23,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 192 SyntacticMatches, 21 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=572, Invalid=1780, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 19:49:23,271 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 104 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 911 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 911 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 19:49:23,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 44 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [911 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 19:49:23,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-18 19:49:23,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 157. [2023-12-18 19:49:23,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.0769230769230769) internal successors, (168), 156 states have internal predecessors, (168), 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 19:49:23,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 168 transitions. [2023-12-18 19:49:23,374 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 168 transitions. Word has length 113 [2023-12-18 19:49:23,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:49:23,375 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 168 transitions. [2023-12-18 19:49:23,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.736842105263158) internal successors, (66), 38 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 19:49:23,375 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 168 transitions. [2023-12-18 19:49:23,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-18 19:49:23,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:49:23,375 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 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] [2023-12-18 19:49:23,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-18 19:49:23,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-18 19:49:23,597 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:49:23,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:49:23,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1535120392, now seen corresponding path program 27 times [2023-12-18 19:49:23,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:49:23,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837955291] [2023-12-18 19:49:23,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:23,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:49:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:49:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 45 proven. 76 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2023-12-18 19:49:24,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:49:24,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837955291] [2023-12-18 19:49:24,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837955291] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:49:24,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54263282] [2023-12-18 19:49:24,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 19:49:24,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:49:24,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:49:24,002 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:49:24,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-18 19:49:24,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-18 19:49:24,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:49:24,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-18 19:49:24,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:49:24,443 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 55 proven. 66 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2023-12-18 19:49:24,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:49:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 55 proven. 66 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2023-12-18 19:49:24,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54263282] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:49:24,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:49:24,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2023-12-18 19:49:24,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990759307] [2023-12-18 19:49:24,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:49:24,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-18 19:49:24,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:49:24,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-18 19:49:24,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2023-12-18 19:49:24,661 INFO L87 Difference]: Start difference. First operand 157 states and 168 transitions. Second operand has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 38 states have internal predecessors, (82), 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 19:49:25,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:49:25,279 INFO L93 Difference]: Finished difference Result 162 states and 173 transitions. [2023-12-18 19:49:25,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-18 19:49:25,279 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 38 states have internal predecessors, (82), 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 117 [2023-12-18 19:49:25,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:49:25,279 INFO L225 Difference]: With dead ends: 162 [2023-12-18 19:49:25,279 INFO L226 Difference]: Without dead ends: 122 [2023-12-18 19:49:25,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 210 SyntacticMatches, 22 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=583, Invalid=1967, Unknown=0, NotChecked=0, Total=2550 [2023-12-18 19:49:25,280 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 42 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 19:49:25,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 30 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 19:49:25,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-18 19:49:25,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2023-12-18 19:49:25,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.0743801652892562) internal successors, (130), 121 states have internal predecessors, (130), 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 19:49:25,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 130 transitions. [2023-12-18 19:49:25,385 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 130 transitions. Word has length 117 [2023-12-18 19:49:25,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:49:25,385 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 130 transitions. [2023-12-18 19:49:25,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 38 states have internal predecessors, (82), 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 19:49:25,385 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 130 transitions. [2023-12-18 19:49:25,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-18 19:49:25,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:49:25,385 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 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 19:49:25,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-18 19:49:25,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:49:25,592 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:49:25,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:49:25,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1480142181, now seen corresponding path program 28 times [2023-12-18 19:49:25,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:49:25,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125841474] [2023-12-18 19:49:25,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:25,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:49:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:49:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 64 proven. 530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:49:51,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:49:51,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125841474] [2023-12-18 19:49:51,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125841474] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:49:51,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481069141] [2023-12-18 19:49:51,180 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 19:49:51,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:49:51,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:49:51,181 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:49:51,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-18 19:49:51,393 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 19:49:51,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:49:51,399 WARN L260 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 364 conjunts are in the unsatisfiable core [2023-12-18 19:49:51,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:49:51,522 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 13 treesize of output 9 [2023-12-18 19:50:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 11 proven. 528 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-18 19:50:13,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:50:41,063 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-18 19:50:41,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481069141] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:50:41,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:50:41,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 95, 96] total 298 [2023-12-18 19:50:41,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887352373] [2023-12-18 19:50:41,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:50:41,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 298 states [2023-12-18 19:50:41,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:50:41,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 298 interpolants. [2023-12-18 19:50:41,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1648, Invalid=86857, Unknown=1, NotChecked=0, Total=88506 [2023-12-18 19:50:41,069 INFO L87 Difference]: Start difference. First operand 122 states and 130 transitions. Second operand has 298 states, 298 states have (on average 1.1275167785234899) internal successors, (336), 298 states have internal predecessors, (336), 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 19:51:41,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:51:41,724 INFO L93 Difference]: Finished difference Result 574 states and 622 transitions. [2023-12-18 19:51:41,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2023-12-18 19:51:41,724 INFO L78 Accepts]: Start accepts. Automaton has has 298 states, 298 states have (on average 1.1275167785234899) internal successors, (336), 298 states have internal predecessors, (336), 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 121 [2023-12-18 19:51:41,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:51:41,725 INFO L225 Difference]: With dead ends: 574 [2023-12-18 19:51:41,725 INFO L226 Difference]: Without dead ends: 476 [2023-12-18 19:51:41,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 452 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62541 ImplicationChecksByTransitivity, 95.8s TimeCoverageRelationStatistics Valid=5578, Invalid=200083, Unknown=1, NotChecked=0, Total=205662 [2023-12-18 19:51:41,747 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 185 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 29350 mSolverCounterSat, 1017 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 30367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1017 IncrementalHoareTripleChecker+Valid, 29350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2023-12-18 19:51:41,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 880 Invalid, 30367 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1017 Valid, 29350 Invalid, 0 Unknown, 0 Unchecked, 19.5s Time] [2023-12-18 19:51:41,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-12-18 19:51:41,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 273. [2023-12-18 19:51:41,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.0808823529411764) internal successors, (294), 272 states have internal predecessors, (294), 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 19:51:41,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 294 transitions. [2023-12-18 19:51:41,981 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 294 transitions. Word has length 121 [2023-12-18 19:51:41,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:51:41,981 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 294 transitions. [2023-12-18 19:51:41,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 298 states, 298 states have (on average 1.1275167785234899) internal successors, (336), 298 states have internal predecessors, (336), 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 19:51:41,981 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 294 transitions. [2023-12-18 19:51:41,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 19:51:41,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:51:41,982 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 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 19:51:41,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-18 19:51:42,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:51:42,188 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:51:42,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:51:42,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1996569969, now seen corresponding path program 29 times [2023-12-18 19:51:42,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:51:42,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279282205] [2023-12-18 19:51:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:51:42,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:51:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:51:42,582 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 67 proven. 77 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-12-18 19:51:42,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:51:42,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279282205] [2023-12-18 19:51:42,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279282205] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:51:42,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70876900] [2023-12-18 19:51:42,582 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 19:51:42,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:51:42,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:51:42,583 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:51:42,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-18 19:51:43,379 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-12-18 19:51:43,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:51:43,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-18 19:51:43,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:51:43,643 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-12-18 19:51:43,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:51:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-12-18 19:51:43,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70876900] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:51:43,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:51:43,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2023-12-18 19:51:43,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590371735] [2023-12-18 19:51:43,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:51:43,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-18 19:51:43,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:51:43,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-18 19:51:43,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1245, Unknown=0, NotChecked=0, Total=1640 [2023-12-18 19:51:43,849 INFO L87 Difference]: Start difference. First operand 273 states and 294 transitions. Second operand has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 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 19:51:44,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:51:44,805 INFO L93 Difference]: Finished difference Result 522 states and 566 transitions. [2023-12-18 19:51:44,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-18 19:51:44,806 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 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) Word has length 122 [2023-12-18 19:51:44,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:51:44,807 INFO L225 Difference]: With dead ends: 522 [2023-12-18 19:51:44,807 INFO L226 Difference]: Without dead ends: 264 [2023-12-18 19:51:44,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 219 SyntacticMatches, 23 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=665, Invalid=2091, Unknown=0, NotChecked=0, Total=2756 [2023-12-18 19:51:44,808 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 113 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 793 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 793 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 19:51:44,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 41 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [793 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 19:51:44,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-18 19:51:45,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 250. [2023-12-18 19:51:45,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.072289156626506) internal successors, (267), 249 states have internal predecessors, (267), 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 19:51:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 267 transitions. [2023-12-18 19:51:45,065 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 267 transitions. Word has length 122 [2023-12-18 19:51:45,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:51:45,065 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 267 transitions. [2023-12-18 19:51:45,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 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 19:51:45,066 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 267 transitions. [2023-12-18 19:51:45,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-18 19:51:45,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:51:45,066 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 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 19:51:45,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-18 19:51:45,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:51:45,275 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:51:45,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:51:45,275 INFO L85 PathProgramCache]: Analyzing trace with hash -74587866, now seen corresponding path program 30 times [2023-12-18 19:51:45,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:51:45,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288113834] [2023-12-18 19:51:45,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:51:45,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:51:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:51:45,690 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 55 proven. 89 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2023-12-18 19:51:45,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:51:45,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288113834] [2023-12-18 19:51:45,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288113834] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:51:45,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797113514] [2023-12-18 19:51:45,691 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 19:51:45,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:51:45,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:51:45,692 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:51:45,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-18 19:51:46,005 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-18 19:51:46,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:51:46,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-18 19:51:46,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:51:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 66 proven. 78 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2023-12-18 19:51:46,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:51:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 66 proven. 78 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2023-12-18 19:51:46,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797113514] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:51:46,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:51:46,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2023-12-18 19:51:46,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018305846] [2023-12-18 19:51:46,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:51:46,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-18 19:51:46,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:51:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-18 19:51:46,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1245, Unknown=0, NotChecked=0, Total=1640 [2023-12-18 19:51:46,433 INFO L87 Difference]: Start difference. First operand 250 states and 267 transitions. Second operand has 41 states, 41 states have (on average 1.6829268292682926) internal successors, (69), 41 states have internal predecessors, (69), 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 19:51:47,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:51:47,174 INFO L93 Difference]: Finished difference Result 255 states and 272 transitions. [2023-12-18 19:51:47,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-18 19:51:47,175 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.6829268292682926) internal successors, (69), 41 states have internal predecessors, (69), 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 123 [2023-12-18 19:51:47,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:51:47,175 INFO L225 Difference]: With dead ends: 255 [2023-12-18 19:51:47,175 INFO L226 Difference]: Without dead ends: 173 [2023-12-18 19:51:47,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 208 SyntacticMatches, 24 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1446 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=676, Invalid=2294, Unknown=0, NotChecked=0, Total=2970 [2023-12-18 19:51:47,176 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 19:51:47,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 30 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 19:51:47,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-18 19:51:47,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 131. [2023-12-18 19:51:47,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0692307692307692) internal successors, (139), 130 states have internal predecessors, (139), 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 19:51:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 139 transitions. [2023-12-18 19:51:47,318 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 139 transitions. Word has length 123 [2023-12-18 19:51:47,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:51:47,319 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 139 transitions. [2023-12-18 19:51:47,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.6829268292682926) internal successors, (69), 41 states have internal predecessors, (69), 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 19:51:47,319 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 139 transitions. [2023-12-18 19:51:47,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-18 19:51:47,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:51:47,319 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 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 19:51:47,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-18 19:51:47,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-18 19:51:47,525 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:51:47,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:51:47,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1173051725, now seen corresponding path program 31 times [2023-12-18 19:51:47,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:51:47,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793464742] [2023-12-18 19:51:47,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:51:47,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:51:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:52:19,368 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 61 proven. 641 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:52:19,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:52:19,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793464742] [2023-12-18 19:52:19,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793464742] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:52:19,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581033674] [2023-12-18 19:52:19,369 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 19:52:19,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:52:19,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:52:19,371 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:52:19,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-18 19:52:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:52:19,565 WARN L260 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 420 conjunts are in the unsatisfiable core [2023-12-18 19:52:19,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:52:20,614 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 19:52:39,034 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:52:39,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:53:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 624 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-18 19:53:20,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581033674] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:53:20,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:53:20,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 114, 104] total 332 [2023-12-18 19:53:20,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091680190] [2023-12-18 19:53:20,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:53:20,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 332 states [2023-12-18 19:53:20,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:53:20,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 332 interpolants. [2023-12-18 19:53:20,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1403, Invalid=108489, Unknown=0, NotChecked=0, Total=109892 [2023-12-18 19:53:20,594 INFO L87 Difference]: Start difference. First operand 131 states and 139 transitions. Second operand has 332 states, 332 states have (on average 1.1114457831325302) internal successors, (369), 332 states have internal predecessors, (369), 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 19:54:41,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:54:41,531 INFO L93 Difference]: Finished difference Result 459 states and 496 transitions. [2023-12-18 19:54:41,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2023-12-18 19:54:41,532 INFO L78 Accepts]: Start accepts. Automaton has has 332 states, 332 states have (on average 1.1114457831325302) internal successors, (369), 332 states have internal predecessors, (369), 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 130 [2023-12-18 19:54:41,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:54:41,533 INFO L225 Difference]: With dead ends: 459 [2023-12-18 19:54:41,533 INFO L226 Difference]: Without dead ends: 354 [2023-12-18 19:54:41,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 488 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58088 ImplicationChecksByTransitivity, 123.9s TimeCoverageRelationStatistics Valid=6617, Invalid=232993, Unknown=0, NotChecked=0, Total=239610 [2023-12-18 19:54:41,541 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 254 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 40621 mSolverCounterSat, 1293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 41914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1293 IncrementalHoareTripleChecker+Valid, 40621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2023-12-18 19:54:41,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1081 Invalid, 41914 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1293 Valid, 40621 Invalid, 0 Unknown, 0 Unchecked, 25.4s Time] [2023-12-18 19:54:41,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-12-18 19:54:41,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 250. [2023-12-18 19:54:41,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.0682730923694779) internal successors, (266), 249 states have internal predecessors, (266), 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 19:54:41,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 266 transitions. [2023-12-18 19:54:41,765 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 266 transitions. Word has length 130 [2023-12-18 19:54:41,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:54:41,765 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 266 transitions. [2023-12-18 19:54:41,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 332 states, 332 states have (on average 1.1114457831325302) internal successors, (369), 332 states have internal predecessors, (369), 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 19:54:41,766 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 266 transitions. [2023-12-18 19:54:41,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-18 19:54:41,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:54:41,766 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 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 19:54:41,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-18 19:54:41,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:54:41,972 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:54:41,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:54:41,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1757694545, now seen corresponding path program 32 times [2023-12-18 19:54:41,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:54:41,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345630236] [2023-12-18 19:54:41,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:54:41,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:54:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:54:42,432 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 79 proven. 90 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2023-12-18 19:54:42,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:54:42,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345630236] [2023-12-18 19:54:42,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345630236] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:54:42,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284706869] [2023-12-18 19:54:42,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 19:54:42,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:54:42,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:54:42,433 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:54:42,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-18 19:54:42,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 19:54:42,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:54:42,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-18 19:54:42,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:54:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 91 proven. 78 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2023-12-18 19:54:42,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:54:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 91 proven. 78 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2023-12-18 19:54:43,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284706869] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:54:43,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:54:43,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2023-12-18 19:54:43,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391653818] [2023-12-18 19:54:43,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:54:43,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-18 19:54:43,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:54:43,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-18 19:54:43,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2023-12-18 19:54:43,152 INFO L87 Difference]: Start difference. First operand 250 states and 266 transitions. Second operand has 44 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 44 states have internal predecessors, (72), 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 19:54:44,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:54:44,123 INFO L93 Difference]: Finished difference Result 440 states and 471 transitions. [2023-12-18 19:54:44,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-18 19:54:44,123 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 44 states have internal predecessors, (72), 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 19:54:44,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:54:44,124 INFO L225 Difference]: With dead ends: 440 [2023-12-18 19:54:44,124 INFO L226 Difference]: Without dead ends: 192 [2023-12-18 19:54:44,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 222 SyntacticMatches, 25 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1450 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=765, Invalid=2427, Unknown=0, NotChecked=0, Total=3192 [2023-12-18 19:54:44,125 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 163 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 1210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1210 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 19:54:44,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 41 Invalid, 1912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1210 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 19:54:44,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-18 19:54:44,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 181. [2023-12-18 19:54:44,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.0666666666666667) internal successors, (192), 180 states have internal predecessors, (192), 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 19:54:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2023-12-18 19:54:44,334 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 131 [2023-12-18 19:54:44,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:54:44,334 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2023-12-18 19:54:44,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 44 states have internal predecessors, (72), 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 19:54:44,335 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2023-12-18 19:54:44,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-18 19:54:44,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:54:44,335 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 12, 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 19:54:44,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-18 19:54:44,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:54:44,539 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:54:44,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:54:44,539 INFO L85 PathProgramCache]: Analyzing trace with hash 510557496, now seen corresponding path program 33 times [2023-12-18 19:54:44,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:54:44,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124122721] [2023-12-18 19:54:44,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:54:44,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:54:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:54:45,022 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 66 proven. 103 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2023-12-18 19:54:45,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:54:45,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124122721] [2023-12-18 19:54:45,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124122721] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:54:45,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752290149] [2023-12-18 19:54:45,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 19:54:45,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:54:45,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:54:45,024 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:54:45,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-18 19:54:45,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-12-18 19:54:45,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:54:45,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-18 19:54:45,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:54:45,595 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 78 proven. 91 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2023-12-18 19:54:45,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:54:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 78 proven. 91 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2023-12-18 19:54:45,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752290149] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:54:45,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:54:45,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2023-12-18 19:54:45,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068907640] [2023-12-18 19:54:45,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:54:45,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-18 19:54:45,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:54:45,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-18 19:54:45,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2023-12-18 19:54:45,859 INFO L87 Difference]: Start difference. First operand 181 states and 192 transitions. Second operand has 44 states, 44 states have (on average 2.522727272727273) internal successors, (111), 44 states have internal predecessors, (111), 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 19:54:46,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:54:46,620 INFO L93 Difference]: Finished difference Result 186 states and 197 transitions. [2023-12-18 19:54:46,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-18 19:54:46,621 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.522727272727273) internal successors, (111), 44 states have internal predecessors, (111), 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 135 [2023-12-18 19:54:46,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:54:46,621 INFO L225 Difference]: With dead ends: 186 [2023-12-18 19:54:46,621 INFO L226 Difference]: Without dead ends: 140 [2023-12-18 19:54:46,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 242 SyntacticMatches, 26 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1685 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=776, Invalid=2646, Unknown=0, NotChecked=0, Total=3422 [2023-12-18 19:54:46,622 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 86 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 575 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 19:54:46,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 33 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [575 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 19:54:46,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-18 19:54:46,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-12-18 19:54:46,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.064748201438849) internal successors, (148), 139 states have internal predecessors, (148), 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 19:54:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 148 transitions. [2023-12-18 19:54:46,744 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 148 transitions. Word has length 135 [2023-12-18 19:54:46,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:54:46,744 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 148 transitions. [2023-12-18 19:54:46,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.522727272727273) internal successors, (111), 44 states have internal predecessors, (111), 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 19:54:46,744 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 148 transitions. [2023-12-18 19:54:46,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-18 19:54:46,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:54:46,745 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 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 19:54:46,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-18 19:54:46,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-18 19:54:46,951 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:54:46,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:54:46,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1161436773, now seen corresponding path program 34 times [2023-12-18 19:54:46,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:54:46,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439638614] [2023-12-18 19:54:46,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:54:46,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:54:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-12-18 19:55:00,862 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 19:55:01,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-18 19:55:03,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-18 19:55:03,828 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Termination requested (timeout or resource limit) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:152) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:869) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:793) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-18 19:55:03,835 INFO L158 Benchmark]: Toolchain (without parser) took 845208.81ms. Allocated memory was 245.4MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 192.3MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-18 19:55:03,835 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 204.5MB. Free memory was 151.7MB in the beginning and 151.6MB in the end (delta: 76.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 19:55:03,835 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.98ms. Allocated memory is still 245.4MB. Free memory was 191.8MB in the beginning and 180.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-18 19:55:03,835 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.82ms. Allocated memory is still 245.4MB. Free memory was 180.3MB in the beginning and 178.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 19:55:03,835 INFO L158 Benchmark]: Boogie Preprocessor took 34.78ms. Allocated memory is still 245.4MB. Free memory was 178.7MB in the beginning and 176.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 19:55:03,835 INFO L158 Benchmark]: RCFGBuilder took 267.32ms. Allocated memory is still 245.4MB. Free memory was 176.6MB in the beginning and 160.3MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-18 19:55:03,835 INFO L158 Benchmark]: TraceAbstraction took 844688.21ms. Allocated memory was 245.4MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 159.3MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-18 19:55:03,836 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 204.5MB. Free memory was 151.7MB in the beginning and 151.6MB in the end (delta: 76.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 178.98ms. Allocated memory is still 245.4MB. Free memory was 191.8MB in the beginning and 180.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.82ms. Allocated memory is still 245.4MB. Free memory was 180.3MB in the beginning and 178.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.78ms. Allocated memory is still 245.4MB. Free memory was 178.7MB in the beginning and 176.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 267.32ms. Allocated memory is still 245.4MB. Free memory was 176.6MB in the beginning and 160.3MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 844688.21ms. Allocated memory was 245.4MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 159.3MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Termination requested (timeout or resource limit) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Termination requested (timeout or resource limit): de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown