/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/nla-digbench-scaling/egcd-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 22:14:58,117 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 22:14:58,187 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 22:14:58,192 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 22:14:58,193 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 22:14:58,226 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 22:14:58,227 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 22:14:58,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 22:14:58,228 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 22:14:58,231 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 22:14:58,232 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 22:14:58,232 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 22:14:58,232 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 22:14:58,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 22:14:58,234 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 22:14:58,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 22:14:58,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 22:14:58,235 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 22:14:58,235 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 22:14:58,235 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 22:14:58,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 22:14:58,236 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 22:14:58,236 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 22:14:58,236 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 22:14:58,236 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 22:14:58,237 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 22:14:58,237 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 22:14:58,237 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 22:14:58,237 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 22:14:58,238 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 22:14:58,238 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 22:14:58,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 22:14:58,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 22:14:58,238 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 22:14:58,238 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 22:14:58,239 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 22:14:58,239 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 22:14:58,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 22:14:58,239 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 22:14:58,239 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 22:14:58,239 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 22:14:58,240 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 22:14:58,240 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 22:14:58,240 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 22:14:58,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 22:14:58,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 22:14:58,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 22:14:58,446 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 22:14:58,446 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 22:14:58,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound5.c [2023-12-15 22:14:59,552 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 22:14:59,704 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 22:14:59,706 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound5.c [2023-12-15 22:14:59,711 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75238ccd8/c20b200cf82f4226817a08fa799ebce0/FLAGbef0fbb43 [2023-12-15 22:14:59,724 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75238ccd8/c20b200cf82f4226817a08fa799ebce0 [2023-12-15 22:14:59,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 22:14:59,727 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 22:14:59,728 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 22:14:59,728 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 22:14:59,733 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 22:14:59,734 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:14:59" (1/1) ... [2023-12-15 22:14:59,735 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a9a605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:14:59, skipping insertion in model container [2023-12-15 22:14:59,735 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:14:59" (1/1) ... [2023-12-15 22:14:59,753 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 22:14:59,908 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound5.c[489,502] [2023-12-15 22:14:59,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 22:14:59,950 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 22:14:59,959 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound5.c[489,502] [2023-12-15 22:14:59,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 22:14:59,977 INFO L206 MainTranslator]: Completed translation [2023-12-15 22:14:59,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:14:59 WrapperNode [2023-12-15 22:14:59,978 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 22:14:59,979 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 22:14:59,979 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 22:14:59,979 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 22:14:59,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:14:59" (1/1) ... [2023-12-15 22:14:59,991 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:14:59" (1/1) ... [2023-12-15 22:15:00,007 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2023-12-15 22:15:00,008 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 22:15:00,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 22:15:00,008 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 22:15:00,008 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 22:15:00,017 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:14:59" (1/1) ... [2023-12-15 22:15:00,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:14:59" (1/1) ... [2023-12-15 22:15:00,019 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:14:59" (1/1) ... [2023-12-15 22:15:00,027 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 22:15:00,027 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:14:59" (1/1) ... [2023-12-15 22:15:00,028 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:14:59" (1/1) ... [2023-12-15 22:15:00,030 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:14:59" (1/1) ... [2023-12-15 22:15:00,033 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:14:59" (1/1) ... [2023-12-15 22:15:00,034 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:14:59" (1/1) ... [2023-12-15 22:15:00,034 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:14:59" (1/1) ... [2023-12-15 22:15:00,041 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 22:15:00,042 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 22:15:00,042 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 22:15:00,042 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 22:15:00,043 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:14:59" (1/1) ... [2023-12-15 22:15:00,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 22:15:00,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:15:00,072 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) [2023-12-15 22:15:00,093 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 [2023-12-15 22:15:00,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 22:15:00,101 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 22:15:00,101 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 22:15:00,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 22:15:00,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 22:15:00,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 22:15:00,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-15 22:15:00,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-15 22:15:00,147 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 22:15:00,149 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 22:15:00,258 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 22:15:00,279 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 22:15:00,279 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 22:15:00,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:15:00 BoogieIcfgContainer [2023-12-15 22:15:00,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 22:15:00,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 22:15:00,282 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 22:15:00,285 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 22:15:00,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:14:59" (1/3) ... [2023-12-15 22:15:00,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a099cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:15:00, skipping insertion in model container [2023-12-15 22:15:00,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:14:59" (2/3) ... [2023-12-15 22:15:00,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a099cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:15:00, skipping insertion in model container [2023-12-15 22:15:00,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:15:00" (3/3) ... [2023-12-15 22:15:00,288 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound5.c [2023-12-15 22:15:00,304 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 22:15:00,305 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 22:15:00,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 22:15:00,353 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;@31ee39b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 22:15:00,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 22:15:00,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-15 22:15:00,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-15 22:15:00,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:15:00,361 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:15:00,362 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:15:00,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:15:00,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2138951705, now seen corresponding path program 1 times [2023-12-15 22:15:00,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:15:00,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309803787] [2023-12-15 22:15:00,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:00,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:15:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:15:00,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:15:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:15:00,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 22:15:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:15:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 22:15:00,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:15:00,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309803787] [2023-12-15 22:15:00,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309803787] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:15:00,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:15:00,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 22:15:00,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701419592] [2023-12-15 22:15:00,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:15:00,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 22:15:00,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:15:00,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 22:15:00,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 22:15:00,603 INFO L87 Difference]: Start difference. First operand has 27 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 22:15:00,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:15:00,635 INFO L93 Difference]: Finished difference Result 52 states and 84 transitions. [2023-12-15 22:15:00,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 22:15:00,637 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-12-15 22:15:00,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:15:00,649 INFO L225 Difference]: With dead ends: 52 [2023-12-15 22:15:00,649 INFO L226 Difference]: Without dead ends: 25 [2023-12-15 22:15:00,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 22:15:00,661 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:15:00,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:15:00,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-15 22:15:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-15 22:15:00,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-15 22:15:00,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2023-12-15 22:15:00,688 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 17 [2023-12-15 22:15:00,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:15:00,688 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2023-12-15 22:15:00,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 22:15:00,688 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2023-12-15 22:15:00,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-15 22:15:00,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:15:00,689 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:15:00,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 22:15:00,690 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:15:00,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:15:00,690 INFO L85 PathProgramCache]: Analyzing trace with hash -443127421, now seen corresponding path program 1 times [2023-12-15 22:15:00,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:15:00,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517509022] [2023-12-15 22:15:00,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:00,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:15:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:15:00,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:15:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:15:00,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 22:15:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:15:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 22:15:00,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:15:00,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517509022] [2023-12-15 22:15:00,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517509022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:15:00,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:15:00,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 22:15:00,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242308719] [2023-12-15 22:15:00,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:15:00,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 22:15:00,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:15:00,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 22:15:00,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 22:15:00,834 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 22:15:00,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:15:00,876 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2023-12-15 22:15:00,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 22:15:00,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-12-15 22:15:00,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:15:00,877 INFO L225 Difference]: With dead ends: 37 [2023-12-15 22:15:00,877 INFO L226 Difference]: Without dead ends: 27 [2023-12-15 22:15:00,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 22:15:00,879 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:15:00,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 84 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:15:00,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-15 22:15:00,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-12-15 22:15:00,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-15 22:15:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2023-12-15 22:15:00,887 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 18 [2023-12-15 22:15:00,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:15:00,888 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2023-12-15 22:15:00,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 22:15:00,888 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2023-12-15 22:15:00,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-15 22:15:00,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:15:00,889 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:15:00,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 22:15:00,889 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:15:00,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:15:00,890 INFO L85 PathProgramCache]: Analyzing trace with hash -441459125, now seen corresponding path program 1 times [2023-12-15 22:15:00,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:15:00,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389791833] [2023-12-15 22:15:00,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:00,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:15:00,903 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 22:15:00,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469742553] [2023-12-15 22:15:00,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:00,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:15:00,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:15:00,906 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) [2023-12-15 22:15:00,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 22:15:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:15:00,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 22:15:00,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:15:01,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 22:15:01,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:15:01,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:15:01,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389791833] [2023-12-15 22:15:01,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 22:15:01,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469742553] [2023-12-15 22:15:01,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469742553] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:15:01,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:15:01,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 22:15:01,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913783835] [2023-12-15 22:15:01,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:15:01,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:15:01,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:15:01,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:15:01,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 22:15:01,107 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 22:15:01,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:15:01,218 INFO L93 Difference]: Finished difference Result 44 states and 61 transitions. [2023-12-15 22:15:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 22:15:01,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-12-15 22:15:01,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:15:01,219 INFO L225 Difference]: With dead ends: 44 [2023-12-15 22:15:01,219 INFO L226 Difference]: Without dead ends: 42 [2023-12-15 22:15:01,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-15 22:15:01,221 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:15:01,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 165 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:15:01,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-15 22:15:01,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-12-15 22:15:01,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 24 states have internal predecessors, (29), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-15 22:15:01,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2023-12-15 22:15:01,233 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 18 [2023-12-15 22:15:01,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:15:01,233 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2023-12-15 22:15:01,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 22:15:01,233 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2023-12-15 22:15:01,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-15 22:15:01,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:15:01,234 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:15:01,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 22:15:01,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:15:01,440 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:15:01,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:15:01,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1203735897, now seen corresponding path program 1 times [2023-12-15 22:15:01,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:15:01,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728495102] [2023-12-15 22:15:01,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:01,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:15:01,462 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 22:15:01,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396482090] [2023-12-15 22:15:01,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:01,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:15:01,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:15:01,474 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) [2023-12-15 22:15:01,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 22:15:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:15:01,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-15 22:15:01,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:15:01,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 22:15:01,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 22:15:01,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:15:01,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728495102] [2023-12-15 22:15:01,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 22:15:01,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396482090] [2023-12-15 22:15:01,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396482090] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:15:01,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:15:01,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-12-15 22:15:01,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426232849] [2023-12-15 22:15:01,878 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 22:15:01,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 22:15:01,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:15:01,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 22:15:01,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-15 22:15:01,880 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 22:15:02,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:15:02,091 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2023-12-15 22:15:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 22:15:02,091 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2023-12-15 22:15:02,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:15:02,094 INFO L225 Difference]: With dead ends: 48 [2023-12-15 22:15:02,094 INFO L226 Difference]: Without dead ends: 46 [2023-12-15 22:15:02,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-15 22:15:02,099 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:15:02,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 132 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:15:02,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-15 22:15:02,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2023-12-15 22:15:02,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 25 states have (on average 1.28) internal successors, (32), 27 states have internal predecessors, (32), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-15 22:15:02,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2023-12-15 22:15:02,112 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 23 [2023-12-15 22:15:02,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:15:02,113 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2023-12-15 22:15:02,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 22:15:02,113 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2023-12-15 22:15:02,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-15 22:15:02,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:15:02,114 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:15:02,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 22:15:02,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-12-15 22:15:02,319 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:15:02,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:15:02,320 INFO L85 PathProgramCache]: Analyzing trace with hash 705122187, now seen corresponding path program 1 times [2023-12-15 22:15:02,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:15:02,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866645400] [2023-12-15 22:15:02,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:02,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:15:02,331 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 22:15:02,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174461525] [2023-12-15 22:15:02,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:02,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:15:02,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:15:02,337 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) [2023-12-15 22:15:02,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 22:15:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:15:02,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 22:15:02,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:15:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 22:15:02,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 22:15:02,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:15:02,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866645400] [2023-12-15 22:15:02,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 22:15:02,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174461525] [2023-12-15 22:15:02,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174461525] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:15:02,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:15:02,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-15 22:15:02,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686497028] [2023-12-15 22:15:02,505 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 22:15:02,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:15:02,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:15:02,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:15:02,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-15 22:15:02,506 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-15 22:15:02,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:15:02,602 INFO L93 Difference]: Finished difference Result 70 states and 102 transitions. [2023-12-15 22:15:02,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 22:15:02,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2023-12-15 22:15:02,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:15:02,608 INFO L225 Difference]: With dead ends: 70 [2023-12-15 22:15:02,608 INFO L226 Difference]: Without dead ends: 66 [2023-12-15 22:15:02,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-15 22:15:02,609 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:15:02,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 87 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:15:02,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-15 22:15:02,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-12-15 22:15:02,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 38 states have internal predecessors, (46), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-15 22:15:02,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 95 transitions. [2023-12-15 22:15:02,628 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 95 transitions. Word has length 28 [2023-12-15 22:15:02,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:15:02,628 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 95 transitions. [2023-12-15 22:15:02,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-15 22:15:02,628 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 95 transitions. [2023-12-15 22:15:02,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-15 22:15:02,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:15:02,629 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:15:02,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 22:15:02,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:15:02,830 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:15:02,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:15:02,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1795283768, now seen corresponding path program 1 times [2023-12-15 22:15:02,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:15:02,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240995139] [2023-12-15 22:15:02,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:02,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:15:02,845 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 22:15:02,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1846830758] [2023-12-15 22:15:02,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:02,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:15:02,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:15:02,852 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) [2023-12-15 22:15:02,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 22:15:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:15:02,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 22:15:02,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:15:02,918 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-15 22:15:02,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:15:02,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:15:02,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240995139] [2023-12-15 22:15:02,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 22:15:02,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846830758] [2023-12-15 22:15:02,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846830758] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:15:02,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:15:02,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 22:15:02,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122320031] [2023-12-15 22:15:02,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:15:02,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 22:15:02,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:15:02,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 22:15:02,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 22:15:02,921 INFO L87 Difference]: Start difference. First operand 66 states and 95 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 22:15:02,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:15:02,970 INFO L93 Difference]: Finished difference Result 82 states and 118 transitions. [2023-12-15 22:15:02,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 22:15:02,970 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2023-12-15 22:15:02,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:15:02,974 INFO L225 Difference]: With dead ends: 82 [2023-12-15 22:15:02,974 INFO L226 Difference]: Without dead ends: 80 [2023-12-15 22:15:02,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 22:15:02,977 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 5 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:15:02,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 127 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:15:02,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-15 22:15:02,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2023-12-15 22:15:02,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 44 states have internal predecessors, (49), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-15 22:15:02,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 104 transitions. [2023-12-15 22:15:03,000 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 104 transitions. Word has length 34 [2023-12-15 22:15:03,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:15:03,002 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 104 transitions. [2023-12-15 22:15:03,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 22:15:03,002 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 104 transitions. [2023-12-15 22:15:03,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-15 22:15:03,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:15:03,005 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:15:03,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 22:15:03,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:15:03,209 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:15:03,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:15:03,209 INFO L85 PathProgramCache]: Analyzing trace with hash -427827123, now seen corresponding path program 1 times [2023-12-15 22:15:03,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:15:03,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331595465] [2023-12-15 22:15:03,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:03,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:15:03,221 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 22:15:03,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1034778005] [2023-12-15 22:15:03,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:03,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:15:03,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:15:03,223 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) [2023-12-15 22:15:03,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 22:15:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:15:03,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 22:15:03,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:15:03,327 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-15 22:15:03,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 22:15:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-15 22:15:03,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:15:03,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331595465] [2023-12-15 22:15:03,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 22:15:03,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034778005] [2023-12-15 22:15:03,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034778005] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 22:15:03,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 22:15:03,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-12-15 22:15:03,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128080321] [2023-12-15 22:15:03,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 22:15:03,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 22:15:03,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:15:03,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 22:15:03,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-15 22:15:03,377 INFO L87 Difference]: Start difference. First operand 73 states and 104 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-15 22:15:03,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:15:03,493 INFO L93 Difference]: Finished difference Result 217 states and 285 transitions. [2023-12-15 22:15:03,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 22:15:03,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 37 [2023-12-15 22:15:03,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:15:03,497 INFO L225 Difference]: With dead ends: 217 [2023-12-15 22:15:03,497 INFO L226 Difference]: Without dead ends: 195 [2023-12-15 22:15:03,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 22:15:03,499 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 56 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:15:03,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 147 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:15:03,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-12-15 22:15:03,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 189. [2023-12-15 22:15:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 107 states have (on average 1.2242990654205608) internal successors, (131), 118 states have internal predecessors, (131), 61 states have call successors, (61), 21 states have call predecessors, (61), 20 states have return successors, (54), 49 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-15 22:15:03,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 246 transitions. [2023-12-15 22:15:03,549 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 246 transitions. Word has length 37 [2023-12-15 22:15:03,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:15:03,550 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 246 transitions. [2023-12-15 22:15:03,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-15 22:15:03,550 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 246 transitions. [2023-12-15 22:15:03,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-15 22:15:03,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:15:03,559 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:15:03,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 22:15:03,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:15:03,767 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:15:03,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:15:03,767 INFO L85 PathProgramCache]: Analyzing trace with hash -426158827, now seen corresponding path program 1 times [2023-12-15 22:15:03,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:15:03,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306599891] [2023-12-15 22:15:03,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:03,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:15:03,776 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 22:15:03,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401133243] [2023-12-15 22:15:03,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:03,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:15:03,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:15:03,778 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) [2023-12-15 22:15:03,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 22:15:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:15:03,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 22:15:03,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:15:03,932 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-15 22:15:03,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 22:15:04,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:15:04,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306599891] [2023-12-15 22:15:04,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 22:15:04,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401133243] [2023-12-15 22:15:04,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401133243] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:15:04,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:15:04,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-15 22:15:04,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304338681] [2023-12-15 22:15:04,038 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 22:15:04,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:15:04,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:15:04,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:15:04,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-15 22:15:04,039 INFO L87 Difference]: Start difference. First operand 189 states and 246 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 22:15:04,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:15:04,117 INFO L93 Difference]: Finished difference Result 203 states and 259 transitions. [2023-12-15 22:15:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 22:15:04,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2023-12-15 22:15:04,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:15:04,119 INFO L225 Difference]: With dead ends: 203 [2023-12-15 22:15:04,119 INFO L226 Difference]: Without dead ends: 198 [2023-12-15 22:15:04,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-15 22:15:04,120 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:15:04,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 93 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:15:04,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-12-15 22:15:04,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2023-12-15 22:15:04,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 116 states have (on average 1.206896551724138) internal successors, (140), 127 states have internal predecessors, (140), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (51), 46 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-15 22:15:04,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 249 transitions. [2023-12-15 22:15:04,141 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 249 transitions. Word has length 37 [2023-12-15 22:15:04,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:15:04,142 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 249 transitions. [2023-12-15 22:15:04,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 22:15:04,142 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 249 transitions. [2023-12-15 22:15:04,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-15 22:15:04,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:15:04,142 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:15:04,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 22:15:04,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:15:04,347 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:15:04,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:15:04,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1298990710, now seen corresponding path program 1 times [2023-12-15 22:15:04,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:15:04,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853198014] [2023-12-15 22:15:04,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:04,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:15:04,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 22:15:04,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028916214] [2023-12-15 22:15:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:04,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:15:04,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:15:04,361 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) [2023-12-15 22:15:04,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 22:15:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:15:04,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 22:15:04,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:15:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-15 22:15:04,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 22:15:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-15 22:15:04,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:15:04,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853198014] [2023-12-15 22:15:04,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 22:15:04,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028916214] [2023-12-15 22:15:04,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028916214] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 22:15:04,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 22:15:04,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-12-15 22:15:04,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864658172] [2023-12-15 22:15:04,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 22:15:04,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 22:15:04,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:15:04,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 22:15:04,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-15 22:15:04,584 INFO L87 Difference]: Start difference. First operand 198 states and 249 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 22:15:04,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:15:04,717 INFO L93 Difference]: Finished difference Result 227 states and 285 transitions. [2023-12-15 22:15:04,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 22:15:04,717 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 39 [2023-12-15 22:15:04,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:15:04,721 INFO L225 Difference]: With dead ends: 227 [2023-12-15 22:15:04,721 INFO L226 Difference]: Without dead ends: 211 [2023-12-15 22:15:04,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-15 22:15:04,723 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:15:04,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 126 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:15:04,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-12-15 22:15:04,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2023-12-15 22:15:04,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 126 states have (on average 1.1666666666666667) internal successors, (147), 137 states have internal predecessors, (147), 57 states have call successors, (57), 25 states have call predecessors, (57), 25 states have return successors, (53), 46 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-15 22:15:04,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 257 transitions. [2023-12-15 22:15:04,750 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 257 transitions. Word has length 39 [2023-12-15 22:15:04,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:15:04,752 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 257 transitions. [2023-12-15 22:15:04,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 22:15:04,752 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 257 transitions. [2023-12-15 22:15:04,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-15 22:15:04,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:15:04,753 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:15:04,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-15 22:15:04,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:15:04,959 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:15:04,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:15:04,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1786533347, now seen corresponding path program 2 times [2023-12-15 22:15:04,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:15:04,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007233127] [2023-12-15 22:15:04,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:04,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:15:04,967 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 22:15:04,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [786577974] [2023-12-15 22:15:04,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 22:15:04,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:15:04,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:15:04,970 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) [2023-12-15 22:15:04,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 22:15:05,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 22:15:05,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 22:15:05,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-15 22:15:05,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:15:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-15 22:15:05,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 22:15:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-15 22:15:05,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:15:05,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007233127] [2023-12-15 22:15:05,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 22:15:05,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786577974] [2023-12-15 22:15:05,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786577974] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 22:15:05,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 22:15:05,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-15 22:15:05,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977080006] [2023-12-15 22:15:05,322 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 22:15:05,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 22:15:05,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:15:05,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 22:15:05,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-12-15 22:15:05,323 INFO L87 Difference]: Start difference. First operand 209 states and 257 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-15 22:15:06,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:15:06,190 INFO L93 Difference]: Finished difference Result 248 states and 309 transitions. [2023-12-15 22:15:06,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 22:15:06,191 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 42 [2023-12-15 22:15:06,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:15:06,192 INFO L225 Difference]: With dead ends: 248 [2023-12-15 22:15:06,192 INFO L226 Difference]: Without dead ends: 224 [2023-12-15 22:15:06,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-12-15 22:15:06,193 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 27 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 22:15:06,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 218 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 22:15:06,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-15 22:15:06,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 205. [2023-12-15 22:15:06,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 132 states have (on average 1.128787878787879) internal successors, (149), 140 states have internal predecessors, (149), 45 states have call successors, (45), 27 states have call predecessors, (45), 27 states have return successors, (41), 37 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-15 22:15:06,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2023-12-15 22:15:06,232 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 42 [2023-12-15 22:15:06,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:15:06,233 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2023-12-15 22:15:06,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-15 22:15:06,233 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2023-12-15 22:15:06,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-15 22:15:06,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:15:06,234 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:15:06,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 22:15:06,439 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,SelfDestructingSolverStorable9 [2023-12-15 22:15:06,439 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:15:06,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:15:06,440 INFO L85 PathProgramCache]: Analyzing trace with hash -882918259, now seen corresponding path program 1 times [2023-12-15 22:15:06,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:15:06,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608354511] [2023-12-15 22:15:06,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:06,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:15:06,447 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 22:15:06,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900920194] [2023-12-15 22:15:06,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:06,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:15:06,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:15:06,449 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) [2023-12-15 22:15:06,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 22:15:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:15:06,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-15 22:15:06,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:15:06,711 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-15 22:15:06,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 22:15:06,927 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-15 22:15:06,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:15:06,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608354511] [2023-12-15 22:15:06,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 22:15:06,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900920194] [2023-12-15 22:15:06,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900920194] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 22:15:06,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 22:15:06,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2023-12-15 22:15:06,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659589686] [2023-12-15 22:15:06,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 22:15:06,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-15 22:15:06,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:15:06,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-15 22:15:06,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-12-15 22:15:06,930 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 14 states have internal predecessors, (37), 8 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-15 22:15:07,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:15:07,355 INFO L93 Difference]: Finished difference Result 217 states and 251 transitions. [2023-12-15 22:15:07,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 22:15:07,356 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 14 states have internal predecessors, (37), 8 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 56 [2023-12-15 22:15:07,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:15:07,358 INFO L225 Difference]: With dead ends: 217 [2023-12-15 22:15:07,358 INFO L226 Difference]: Without dead ends: 190 [2023-12-15 22:15:07,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2023-12-15 22:15:07,359 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 42 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 22:15:07,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 319 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 22:15:07,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-12-15 22:15:07,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 184. [2023-12-15 22:15:07,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 123 states have (on average 1.113821138211382) internal successors, (137), 127 states have internal predecessors, (137), 36 states have call successors, (36), 24 states have call predecessors, (36), 24 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-15 22:15:07,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 207 transitions. [2023-12-15 22:15:07,387 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 207 transitions. Word has length 56 [2023-12-15 22:15:07,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:15:07,387 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 207 transitions. [2023-12-15 22:15:07,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 14 states have internal predecessors, (37), 8 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-15 22:15:07,388 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 207 transitions. [2023-12-15 22:15:07,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-15 22:15:07,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:15:07,389 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:15:07,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 22:15:07,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:15:07,594 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:15:07,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:15:07,594 INFO L85 PathProgramCache]: Analyzing trace with hash -11441917, now seen corresponding path program 2 times [2023-12-15 22:15:07,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:15:07,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022284147] [2023-12-15 22:15:07,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:07,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:15:07,602 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 22:15:07,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127704368] [2023-12-15 22:15:07,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 22:15:07,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:15:07,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:15:07,604 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) [2023-12-15 22:15:07,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 22:15:07,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 22:15:07,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 22:15:07,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 22:15:07,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:15:07,812 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 24 proven. 266 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-15 22:15:07,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 22:15:07,896 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 24 proven. 50 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-12-15 22:15:07,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:15:07,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022284147] [2023-12-15 22:15:07,896 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 22:15:07,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127704368] [2023-12-15 22:15:07,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127704368] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 22:15:07,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 22:15:07,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 8 [2023-12-15 22:15:07,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435666230] [2023-12-15 22:15:07,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 22:15:07,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 22:15:07,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:15:07,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 22:15:07,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-12-15 22:15:07,898 INFO L87 Difference]: Start difference. First operand 184 states and 207 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2023-12-15 22:15:07,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:15:07,988 INFO L93 Difference]: Finished difference Result 246 states and 280 transitions. [2023-12-15 22:15:07,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 22:15:07,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 94 [2023-12-15 22:15:07,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:15:07,990 INFO L225 Difference]: With dead ends: 246 [2023-12-15 22:15:07,990 INFO L226 Difference]: Without dead ends: 237 [2023-12-15 22:15:07,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 174 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2023-12-15 22:15:07,991 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 5 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:15:07,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 105 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:15:07,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-15 22:15:08,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2023-12-15 22:15:08,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 158 states have (on average 1.1075949367088607) internal successors, (175), 163 states have internal predecessors, (175), 47 states have call successors, (47), 31 states have call predecessors, (47), 31 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-15 22:15:08,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 267 transitions. [2023-12-15 22:15:08,024 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 267 transitions. Word has length 94 [2023-12-15 22:15:08,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:15:08,024 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 267 transitions. [2023-12-15 22:15:08,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2023-12-15 22:15:08,024 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 267 transitions. [2023-12-15 22:15:08,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-15 22:15:08,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:15:08,025 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:15:08,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 22:15:08,230 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,SelfDestructingSolverStorable11 [2023-12-15 22:15:08,230 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:15:08,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:15:08,231 INFO L85 PathProgramCache]: Analyzing trace with hash -201740083, now seen corresponding path program 3 times [2023-12-15 22:15:08,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:15:08,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153312975] [2023-12-15 22:15:08,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:15:08,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:15:08,239 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 22:15:08,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [984766411] [2023-12-15 22:15:08,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-15 22:15:08,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:15:08,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:15:08,240 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) [2023-12-15 22:15:08,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 22:15:08,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-12-15 22:15:08,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-12-15 22:15:08,318 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-15 22:15:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-15 22:15:08,383 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-15 22:15:08,383 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-15 22:15:08,384 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 22:15:08,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-15 22:15:08,590 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,SelfDestructingSolverStorable12 [2023-12-15 22:15:08,593 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:15:08,596 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 22:15:08,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 10:15:08 BoogieIcfgContainer [2023-12-15 22:15:08,642 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 22:15:08,642 INFO L158 Benchmark]: Toolchain (without parser) took 8915.54ms. Allocated memory was 295.7MB in the beginning and 355.5MB in the end (delta: 59.8MB). Free memory was 245.1MB in the beginning and 230.5MB in the end (delta: 14.7MB). Peak memory consumption was 75.5MB. Max. memory is 8.0GB. [2023-12-15 22:15:08,642 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 217.1MB. Free memory was 166.4MB in the beginning and 166.3MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 22:15:08,643 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.39ms. Allocated memory is still 295.7MB. Free memory was 244.9MB in the beginning and 233.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-15 22:15:08,643 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.74ms. Allocated memory is still 295.7MB. Free memory was 233.6MB in the beginning and 232.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 22:15:08,643 INFO L158 Benchmark]: Boogie Preprocessor took 33.29ms. Allocated memory is still 295.7MB. Free memory was 232.0MB in the beginning and 230.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-15 22:15:08,643 INFO L158 Benchmark]: RCFGBuilder took 237.76ms. Allocated memory is still 295.7MB. Free memory was 230.5MB in the beginning and 218.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 22:15:08,644 INFO L158 Benchmark]: TraceAbstraction took 8359.77ms. Allocated memory was 295.7MB in the beginning and 355.5MB in the end (delta: 59.8MB). Free memory was 217.9MB in the beginning and 230.5MB in the end (delta: -12.6MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. [2023-12-15 22:15:08,645 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 217.1MB. Free memory was 166.4MB in the beginning and 166.3MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 250.39ms. Allocated memory is still 295.7MB. Free memory was 244.9MB in the beginning and 233.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.74ms. Allocated memory is still 295.7MB. Free memory was 233.6MB in the beginning and 232.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.29ms. Allocated memory is still 295.7MB. Free memory was 232.0MB in the beginning and 230.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 237.76ms. Allocated memory is still 295.7MB. Free memory was 230.5MB in the beginning and 218.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 8359.77ms. Allocated memory was 295.7MB in the beginning and 355.5MB in the end (delta: 59.8MB). Free memory was 217.9MB in the beginning and 230.5MB in the end (delta: -12.6MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [counter=0, x=13, y=2] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [counter=0, x=13, y=2] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [a=13, b=2, counter=0, p=1, q=0, r=0, s=1, x=13, y=2] [L34] EXPR counter++ VAL [a=13, b=2, counter=1, p=1, q=0, r=0, s=1, x=13, y=2] [L34] COND TRUE counter++<5 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=13, b=2, counter=1, p=1, q=0, r=0, s=1, x=13, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=13, b=2, counter=1, p=1, q=0, r=0, s=1, x=13, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=13, b=2, counter=1, p=1, q=0, r=0, s=1, x=13, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=13, b=2, counter=1, p=1, q=0, r=0, s=1, x=13, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=11, b=2, counter=1, p=1, q=0, r=-1, s=1, x=13, y=2] [L34] EXPR counter++ VAL [a=11, b=2, counter=2, p=1, q=0, r=-1, s=1, x=13, y=2] [L34] COND TRUE counter++<5 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=11, b=2, counter=2, p=1, q=0, r=-1, s=1, x=13, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=11, b=2, counter=2, p=1, q=0, r=-1, s=1, x=13, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=11, b=2, counter=2, p=1, q=0, r=-1, s=1, x=13, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=11, b=2, counter=2, p=1, q=0, r=-1, s=1, x=13, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=9, b=2, counter=2, p=1, q=0, r=-2, s=1, x=13, y=2] [L34] EXPR counter++ VAL [a=9, b=2, counter=3, p=1, q=0, r=-2, s=1, x=13, y=2] [L34] COND TRUE counter++<5 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=3] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=9, b=2, counter=3, p=1, q=0, r=-2, s=1, x=13, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=3] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=9, b=2, counter=3, p=1, q=0, r=-2, s=1, x=13, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=3] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=9, b=2, counter=3, p=1, q=0, r=-2, s=1, x=13, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=9, b=2, counter=3, p=1, q=0, r=-2, s=1, x=13, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=7, b=2, counter=3, p=1, q=0, r=-3, s=1, x=13, y=2] [L34] EXPR counter++ VAL [a=7, b=2, counter=4, p=1, q=0, r=-3, s=1, x=13, y=2] [L34] COND TRUE counter++<5 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=7, b=2, counter=4, p=1, q=0, r=-3, s=1, x=13, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=7, b=2, counter=4, p=1, q=0, r=-3, s=1, x=13, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=7, b=2, counter=4, p=1, q=0, r=-3, s=1, x=13, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=7, b=2, counter=4, p=1, q=0, r=-3, s=1, x=13, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=5, b=2, counter=4, p=1, q=0, r=-4, s=1, x=13, y=2] [L34] EXPR counter++ VAL [a=5, b=2, counter=5, p=1, q=0, r=-4, s=1, x=13, y=2] [L34] COND TRUE counter++<5 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=5, b=2, counter=5, p=1, q=0, r=-4, s=1, x=13, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=5, b=2, counter=5, p=1, q=0, r=-4, s=1, x=13, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=5, b=2, counter=5, p=1, q=0, r=-4, s=1, x=13, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=5, b=2, counter=5, p=1, q=0, r=-4, s=1, x=13, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=3, b=2, counter=5, p=1, q=0, r=-5, s=1, x=13, y=2] [L34] EXPR counter++ VAL [a=3, b=2, counter=6, p=1, q=0, r=-5, s=1, x=13, y=2] [L34] COND FALSE !(counter++<5) [L53] CALL __VERIFIER_assert(a - b == 0) VAL [\old(cond)=0, counter=6] [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=6] [L13] reach_error() VAL [\old(cond)=0, cond=0, counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.3s, OverallIterations: 13, TraceHistogramMax: 16, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 257 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 225 mSDsluCounter, 1637 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1287 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1087 IncrementalHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 350 mSDtfsCounter, 1087 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 725 GetRequests, 604 SyntacticMatches, 7 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=237occurred in iteration=12, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 42 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 556 NumberOfCodeBlocks, 556 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 694 ConstructedInterpolants, 0 QuantifiedInterpolants, 2350 SizeOfPredicates, 35 NumberOfNonLiveVariables, 1173 ConjunctsInSsa, 179 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 768/1139 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-12-15 22:15:08,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...